10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2018

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                          to                          

Commission File Number 001-09463

RLI CORP.

(Exact name of registrant as specified in its charter)

Delaware	37-0889946
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
9025 North Lindbergh Drive, Peoria, Illinois	61615
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code (309) 692-1000

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Name of each exchange on which registered
Common Stock $0.01 par value	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: NONE

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☒ No ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes ☐ No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☒	Accelerated filer ☐	Non-accelerated filer ☐	Smaller reporting company ☐
			Emerging growth company ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒ 

The aggregate market value of the registrant’s common stock held by non-affiliates of the Registrant as of June 30, 2018, based upon the closing sale price of the Common Stock on June 30, 2018 as reported on the New York Stock Exchange, was $2,616,706,281. Shares of Common Stock held directly or indirectly by each reporting officer and director along with shares held by the Company ESOP have been excluded in that such persons may be deemed to be affiliates. This determination of affiliate status is not necessarily a conclusive determination for other purposes.

The number of shares outstanding of the Registrant’s Common Stock, $0.01 par value, on February 7, 2019 was 44,512,543.

DOCUMENTS INCORPORATED BY REFERENCE.

Portions of the Registrant’s definitive Proxy Statement for the 2019 annual meeting of shareholders to be held May 2, 2019, are incorporated herein by reference into Part III of this document, including: “Share Ownership of Certain Beneficial Owners,” “Board Meetings and Compensation,” “Compensation Discussion & Analysis,” “Executive Compensation,” “Equity Compensation Plan Information,” “Executive Management,” “Corporate Governance and Board Matters,” “Audit Committee Report” and “Proposal three: Ratification of Selection of Independent Registered Public Accounting Firm.”

Exhibit index is located on pages 121-122 of this document, which lists documents filed as exhibits or incorporated by reference herein.

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RLI Corp.

Index to Annual Report on Form 10-K

			Page
Part I
	Item 1.	Business	4
	Item 1A.	Risk Factors	23
	Item 1B.	Unresolved Staff Comments	30
	Item 2.	Properties	30
	Item 3.	Legal Proceedings	30
	Item 4.	Mine Safety Disclosures	30
Part II
	Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	31
	Item 6.	Selected Financial Data	33
	Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	34
	Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	60
	Item 8.	Financial Statements and Supplementary Data	63
	Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	110
	Item 9A.	Controls and Procedures	110
	Item 9B.	Other Information	110
Part III
	Items 10-14.		110
Part IV
	Item 15.	Exhibits and Financial Statement Schedules	110

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PART I

Item 1.Business

RLI Corp. (the “Company”) was founded in 1965. We underwrite select property and casualty insurance through major subsidiaries collectively known as RLI Insurance Group. We conduct operations principally through three insurance companies. RLI Insurance Company (RLI Ins.), a subsidiary of RLI Corp. and our principal insurance subsidiary, writes multiple lines of insurance on an admitted basis in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands and Guam. Mt. Hawley Insurance Company (Mt. Hawley), a subsidiary of RLI Ins., writes excess and surplus lines insurance on a non-admitted basis in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands and Guam. Contractors Bonding and Insurance Company (CBIC), a subsidiary of RLI Ins., writes multiple lines of insurance on an admitted basis in all 50 states and the District of Columbia. Each of our insurance companies is domiciled in Illinois. We have no material foreign operations.

As a specialty insurance company with a niche focus, we offer insurance coverages in the specialty admitted and excess and surplus markets. We distribute our property and casualty insurance through our branch offices that market to wholesale and retail producers. We offer limited coverages on a direct basis to select insureds, as well as various reinsurance coverages. In addition, from time to time, we produce a limited amount of business under agreements with managing general agents under the direction of our product vice presidents.

We make our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed with or furnished to the Securities and Exchange Commission (SEC) available free of charge on our website (rlicorp.com). Information contained on our website is not intended to be incorporated by reference in this annual report and you should not consider that information a part of this annual report. The SEC also maintains a website (http://www.sec.gov) that contains reports, proxy and information statements and other information regarding the Company.

For the year ended December 31, 2018, the following table provides the geographic distribution of our risks insured as represented by direct premiums earned for all coverages:

State	Direct Premiums Earned		Percent of Total
	(in thousands)
California	$	141,868	15.8	%
New York		126,672	14.1	%
Florida		88,992	9.9	%
Texas		79,766	8.9	%
Washington		32,374	3.6	%
New Jersey		27,754	3.1	%
Illinois		25,323	2.8	%
Arizona		24,475	2.7	%
Louisiana		24,136	2.7	%
Georgia		21,296	2.4	%
Pennsylvania		19,529	2.2	%
Ohio		19,165	2.2	%
Hawaii		18,575	2.1	%
All Other		246,309	27.5	%
Total direct premiums earned	$	896,234	100.0	%

In the ordinary course of business, we rely on other insurance companies to share risks through reinsurance. A large portion of the reinsurance is put into effect under contracts known as treaties and, in some instances, by negotiation on each individual risk (known as facultative reinsurance). We have quota share, excess of loss and catastrophe (CAT) reinsurance contracts that protect against losses over stipulated amounts arising from any one occurrence or event. These arrangements allow the Company to pursue greater diversification of business and serve to limit the maximum net loss on catastrophes and large risks. Reinsurance is subject to certain risks, specifically market risk, which affect the cost of and the ability to secure these contracts, and credit risk, which is the risk that our reinsurers may not pay on losses in a timely fashion or at all. The following table illustrates the degree to which we have utilized reinsurance during the past three years. For an expanded discussion of the impact of reinsurance on our operations, see note 5 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data.

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	Year Ended December 31,
(in thousands)	2018		2017		2016
PREMIUMS WRITTEN
Direct & Assumed	$	983,216	$	885,312	$	874,864
Reinsurance ceded		(160,041)		(135,458)		(133,912)
Net	$	823,175	$	749,854	$	740,952
PREMIUMS EARNED
Direct & Assumed	$	938,160	$	867,639	$	863,180
Reinsurance ceded		(146,794)		(129,702)		(134,572)
Net	$	791,366	$	737,937	$	728,608

SPECIALTY INSURANCE MARKET OVERVIEW

The specialty insurance market differs significantly from the standard market. In the standard market, products and coverage are largely uniform with relatively predictable exposures and companies tend to compete for customers on the basis of price. In contrast, the specialty market provides coverage for risks that do not fit the underwriting criteria of the standard carriers. Competition tends to focus less on price and more on availability, coverage, service and other value-based considerations. While specialty market exposures may have higher insurance risks than their standard admitted market counterparts, we manage these risks to achieve higher financial returns. To reach our financial and operational goals, we must have extensive knowledge of, and expertise in, our markets. Many of our risks are underwritten on an individual basis and tailored coverages are employed in order to respond to distinctive risk characteristics. We operate in the specialty admitted insurance market, the excess and surplus insurance market and the specialty reinsurance markets.

SPECIALTY ADMITTED INSURANCE MARKET

We write business in the specialty admitted market. Most of these risks are unique and hard to place in the standard admitted market, but for marketing and regulatory reasons, they must remain with an admitted insurance company. The specialty admitted market is subject to greater state regulation than the excess and surplus market, particularly with regard to rate and form filing requirements, restrictions on the ability to exit lines of business, premium tax payments and membership in various state associations, such as state guaranty funds and assigned risk plans. For 2018, our specialty admitted operations produced gross premiums written of $619.6 million, representing approximately 63 percent of our total gross premiums for the year.

EXCESS AND SURPLUS INSURANCE MARKET

The excess and surplus market focuses on hard-to-place risks. Participating in this market allows the Company to underwrite non-standard risks with more flexible policy forms and unregulated premium rates. This typically results in coverages that are more restrictive and more expensive than in the standard admitted market. The excess and surplus lines regulatory environment and production model also effectively filter submission flow and match market opportunities to our expertise and appetite. According to the 2018 edition of A.M. Best Aggregate & Averages – Property/Casualty, United States & Canada, the excess and surplus market represented approximately $23 billion, or 4 percent, of the entire $642 billion domestic property and casualty industry in 2017, as measured by direct premiums written. Our excess and surplus operations wrote gross premiums of $316.9 million, or 32 percent, of our total gross premiums written in 2018.

SPECIALTY REINSURANCE MARKETS

We write business in the specialty reinsurance markets. This business is generally written on a portfolio (treaty) basis. We write contracts on an excess of loss and a proportional basis. Contract provisions are written and agreed upon between the company and its reinsurance clients. The business is typically more volatile as a result of unique underlying exposures and excess and aggregate attachments. For 2018, our specialty reinsurance operations wrote gross premiums of $46.7 million, representing approximately 5 percent of our total gross premiums written for the year.

BUSINESS SEGMENT OVERVIEW

The segments of our insurance operations are casualty, property and surety. For additional information, see note 11 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data.

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CASUALTY SEGMENT

Commercial Excess and Personal Umbrella

Our commercial excess coverage is written in excess of primary liability insurance provided by other carriers and in excess of primary liability written by the Company. The personal umbrella coverage is written in excess of homeowners’ and automobile liability coverage provided by other carriers, except in Hawaii, where some underlying homeowners’ coverage is written by the Company. Net premiums earned from this business totaled $124.4 million, $115.5 million and $111.1 million, or 16 percent, 16 percent and 15 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

General Liability

Our general liability business consists primarily of coverage for third-party liability of commercial insureds including manufacturers, contractors, apartments and mercantile. We also offer coverages for security guards and in the specialized areas of onshore energy-related businesses and environmental liability for underground storage tanks, contractors and asbestos and environmental remediation specialists. Net premiums earned from our general liability business totaled $93.9 million, $90.3 million and $86.9 million, or 12 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

Commercial Transportation

Our transportation insurance provides commercial automobile liability and physical damage insurance to local, intermediate and long haul truckers, public transportation entities and equipment dealers, along with other types of specialty commercial automobile risks. We also offer incidental, related insurance coverages including general liability, excess liability and motor truck cargo. We produce business through independent agents and brokers nationwide. Net premiums earned from this business totaled $81.1 million, $78.1 million and $81.4 million, or 10 percent, 11 percent and 11 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

Professional Services

We offer professional liability coverages focused on providing errors and omission coverage to small to medium-sized design, technical, computer and miscellaneous professionals. Our product suite for these customers also includes a full array of multi-peril package products including general liability, property, automobile, excess liability and workers’ compensation coverages. This business primarily markets its products through specialty retail agents nationwide. Net premiums earned from the professional services group totaled $80.0 million, $78.5 million and $75.9 million, or 10 percent, 11 percent and 10 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

Small Commercial

Our small commercial business offers property and casualty insurance coverages to small contractors and other small to medium-sized retail businesses. The coverages included in these packages are predominantly general liability, but also have some inland marine coverages as well as commercial automobile, property and umbrella coverage. These products are primarily marketed through retail agents. Net premiums earned from the small commercial business totaled $51.5 million, $49.6 million and $45.7 million, or 6 percent, 7 percent and 6 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

Executive Products

We provide a suite of management liability coverages, such as directors and officers (D&O) liability insurance, fiduciary liability and fidelity coverages, for a variety of risk classes, including both public and private businesses. Our publicly traded D&O appetite generally focuses on offering excess “Side A” D&O coverage (where corporations cannot indemnify the individual directors and officers) as well as excess full coverage D&O. Additionally, we offer representations and warranties coverage for companies involved in mergers and acquisitions, tax liability representations and warranties coverage for companies claiming certain tax credits and excess cyber liability coverage to medium to large size public and private businesses. Net premiums earned from the executive products business totaled $21.3 million, $18.1 million and $18.8 million, or 3 percent, 2 percent and 3 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

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Medical Professional Liability

We provide healthcare liability coverage focused on long-term care. In early 2019, we exited the long-term care business on a runoff basis. We also offer medical professional liability insurance specializing in hard-to-place individuals and group physicians. This business is marketed through wholesale brokers and retail agents. Net premiums earned from the medical professional liability business totaled $16.0 million, $17.1 million and $17.4 million, or 2 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

Other Casualty

We offer a variety of other smaller products in our casualty segment, including home business insurance, which provides limited liability and property coverage, on and off-site, for a variety of small business owners who work from their own home. We have a quota share reinsurance agreement with Prime Insurance Company and Prime Property and Casualty Insurance Inc., the two insurance subsidiaries of Prime Holdings Insurance Services, Inc. (Prime). We assume general liability, excess, commercial auto, property and professional liability coverages on hard-to-place risks that are written in the excess and surplus and admitted insurance markets. Additionally, we write mortgage reinsurance, which provides credit risk transfer on pools of mortgages, and offer general liability coverage through a general binding authority (GBA) group. Net premiums earned from these lines totaled $55.3 million, $31.4 million and $17.8 million, or 7 percent, 4 percent and 2 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

PROPERTY SEGMENT

Commercial Property

Our commercial property coverage consists primarily of excess and surplus lines and specialty insurance such as fire, earthquake and difference in conditions (DIC), which can include earthquake, wind, flood and collapse coverages. We provide insurance for a wide range of commercial and industrial risks, such as office buildings, apartments, condominiums, builders’ risks and certain industrial and mercantile structures. Net premiums earned from the commercial property business totaled $71.5 million, $63.1 million and $68.2 million, or 9 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

Marine

Our marine coverages include cargo, hull, protection and indemnity (P&I), marine liability, as well as inland marine coverages including builders’ risks and contractors’ equipment. Although the predominant exposures are located within the United States, there is some incidental international exposure written within these coverages. Net premiums earned from the marine business totaled $59.8 million, $50.9 million and $48.3 million, or 8 percent, 7 percent and 7 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

Specialty Personal

We offer specialized homeowners’ insurance in select locations, including homeowners’ and dwelling fire insurance through retail agents in Hawaii and a limited amount of homeowners’ insurance in Massachusetts and North Carolina. We also offered recreational vehicle insurance, which we began phasing out towards the end of 2016. Net premiums earned from specialty personal coverages totaled $16.9 million, $20.8 million and $25.0 million, or 2 percent, 3 percent and 3 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

Other Property

Our other property coverages consist of newer product offerings, such as general binding authority, and lines which we have recently exited, including property reinsurance. Net premiums earned from these lines totaled $1.1 million, $3.5 million and $10.7 million, or 1 percent or less of total net premiums earned for 2018, 2017 and 2016, respectively.

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SURETY SEGMENT

Miscellaneous

Our miscellaneous surety coverage includes small bonds for businesses and individuals written through independent insurance agencies throughout the United States. Examples of these types of bonds are license and permit, notary and court bonds. These bonds are usually individually underwritten and utilize extensive automation tools for the underwriting and bond delivery to our agents and principals. Net premiums earned from miscellaneous surety coverages totaled $47.0 million, $47.2 million and $46.2 million, or 6 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

Contract

We offer bonds for small to medium-sized contractors throughout the United States, underwritten on an account basis. Typically, these are performance and payment bonds for individual construction contracts. These bonds are marketed through a select number of insurance agencies that have surety and construction expertise. We also offer bonds for small and emerging contractors that are reinsured through the Federal Small Business Administration. Net premiums earned from contract surety coverages totaled $28.2 million, $28.6 million and $28.2 million, or 4 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

Commercial

We offer a large variety of commercial surety bonds for medium to large-sized businesses across a broad spectrum of industries. These risks are underwritten on an account basis and coverage is marketed through a select number of regional and national brokers with surety expertise. Net premiums earned from commercial surety coverages totaled $26.8 million, $27.6 million and $29.1 million, or 3 percent, 4 percent and 4 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

Energy

Our energy surety coverages provide commercial surety bonds for the energy, petrochemical and refining industries both on and off shore. These risks are primarily underwritten on an account basis and are primarily marketed through insurance producers with expertise in these industries. Net premiums earned from energy coverages totaled $16.7 million, $17.6 million and $18.0 million, or 2 percent of total net premiums earned for 2018, 2017 and 2016, respectively.

MARKETING AND DISTRIBUTION

We distribute our coverages primarily through branch offices throughout the country that market to wholesale and retail brokers and through independent agents.

BROKERS

The largest volume of broker-generated premium is in our commercial property, general liability, commercial surety, commercial excess, commercial transportation and medical professional liability coverages. This business is produced through independent wholesale and retail brokers.

INDEPENDENT AGENTS

We target classes of insurance, such as homeowners’ and dwelling fire, home business, surety and personal umbrella, through independent agents. Several of these products involve detailed eligibility criteria, which are incorporated into strict underwriting guidelines and prequalification of each risk using a system accessible by the independent agent. The independent agent cannot bind the risk unless they receive approval from our underwriters or through our automated systems.

UNDERWRITING AGENTS

We contract with certain underwriting agencies, which have limited authority to bind or underwrite business on our behalf. The underwriting agreements involve strict underwriting guidelines and the agents are subject to audits upon request. These agencies may receive some compensation through contingent profit commission.

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DIGITAL AND DIRECT

We utilize digital efforts to produce and efficiently process and service business including home businesses, high performance drivers, small commercial and personal umbrella risks and surety bonding. On a direct basis, we also assume premium on various reinsurance treaties.

COMPETITION

Our specialty property and casualty insurance subsidiaries are part of a very competitive industry that is cyclical and historically characterized by periods of high premium rates and shortages of underwriting capacity followed by periods of severe competition and excess underwriting capacity. Within the United States alone, approximately 2,600 companies actively market property and casualty coverages. Our primary competitors in the casualty segment include Arch, Aspen, Chubb, CNA, Great American, Great West, Hartford, Lancer, Markel, Navigators, Protective, RSUI, Sompo, USLI, Travelers and Zurich. Primary competitors in the property segment include Arch, Aspen, Chubb, CNA, Crum & Forster, Great American, Lexington, Sompo and Travelers. Primary competitors in the surety segment are AIG, Arch, Chubb, CNA, Great American, HCC, Navigators, Sompo, Travelers and XL. The combination of coverages, service, pricing and other methods of competition vary from line to line. Our principal methods of meeting this competition are innovative coverages, marketing structure and quality service to the agents and policyholders at a fair price. We compete favorably, in part, because of our sound financial base and reputation, as well as our broad, geographic footprint in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands and Guam. In the casualty, property and surety areas, we have experienced underwriting specialists in our branch and home offices. We continue to maintain our underwriting and marketing standards by not seeking market share at the expense of earnings. We have a track record of withdrawing from markets when conditions become overly adverse, and offering new coverages and programs where the opportunity exists to provide needed insurance coverage with exceptional service on a profitable basis.

FINANCIAL STRENGTH RATINGS

A.M. Best financial strength ratings for the industry range from ‘‘A++’’ (Superior) to ‘‘F’’ (In liquidation) with some companies not being rated. Standard & Poor’s financial strength ratings for the industry range from ‘‘AAA’’ (Extremely strong) to ‘‘R’’ (Regulatory action). Moody’s financial strength ratings for the industry range from “Aaa” (Exceptional) to “C” (Lowest). The following table illustrates the range of ratings assigned by each of the three major rating companies that has issued a financial strength rating on our insurance companies:

A.M. Best		Standard & Poor’s		Moody’s
SECURE		SECURE		STRONG
A++, A+	Superior	AAA	Extremely strong	Aaa	Exceptional
A, A-	Excellent	AA	Very strong	Aa	Excellent
B++, B+	Very good	A	Strong	A	Good
		BBB	Good	Baa	Adequate

VULNERABLE		VULNERABLE		WEAK
B, B-	Fair	BB	Marginal	Ba	Questionable
C++, C+	Marginal	B	Weak	B	Poor
C, C-	Weak	CCC	Very weak	Caa	Very poor
D	Poor	CC	Extremely weak	Ca	Extremely poor
E	Under regulatory supervision	R	Regulatory action	C	Lowest
F	In liquidation
S	Rating suspended
Within-category modifiers		+,-		1,2,3 (1 high, 3 low)

Publications of A.M. Best, Standard & Poor’s and Moody’s indicate that ‘‘A’’ and ‘‘A+’’ ratings are assigned to those companies that, in their opinion, have achieved exceptional overall performance compared to the standards they have established and have a strong ability to meet their obligations to policyholders over a long period of time. In evaluating a company’s financial and operating performance, each of the firms review the company’s profitability, leverage and liquidity, as well as the company’s spread of risk, the quality and appropriateness of its reinsurance, the quality and diversification of its

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assets, the adequacy of its policy and loss reserves, the adequacy of its surplus, its capital structure, its risk management practices and the experience and objectives of its management. These ratings are based on factors relevant to policyholders, agents, insurance brokers and intermediaries and are not specifically related to securities issued by the company.

At December 31, 2018, the following ratings were assigned to our insurance companies:

A.M. Best
RLI Ins., Mt. Hawley and CBIC* (group-rated)	A+, Superior
Standard & Poor’s
RLI Ins. and Mt. Hawley	A+, Strong
Moody’s
RLI Ins. and Mt. Hawley	A2, Good

*CBIC is only rated by A.M. Best

For A.M. Best, Standard & Poor’s and Moody’s, the financial strength ratings represented above are affirmations of previously assigned ratings. A.M. Best, in addition to assigning a financial strength rating, also assigns financial size categories. In October 2018, RLI Ins., Mt. Hawley and CBIC, which are collectively rated as a group, were assigned a financial size category of “XI” (adjusted policyholders’ surplus of between $750 million and $1 billion). As of December 31, 2018, the policyholders’ statutory surplus of RLI Insurance Group totaled $829.8 million, which continues to result in A.M. Best’s financial size category “XI”.

REINSURANCE

We reinsure a portion of our insurance exposure, paying or ceding to the reinsurer a portion of the premiums received on such policies. Earned premiums ceded to non-affiliated reinsurers totaled $146.8 million, $129.7 million and $134.6 million in 2018, 2017 and 2016, respectively. Insurance is ceded principally to reduce net liability on individual risks and to protect against catastrophic losses. We use reinsurance as an alternative to using our own capital to take risks and reduce volatility. Retention levels are evaluated each year to maintain a balance between the growth in surplus and the cost of reinsurance. Although reinsurance does not legally discharge an insurer from its primary liability for the full amount of the policies, it does make the assuming reinsurer liable to the insurer to the extent of the insurance ceded.

Reinsurance is subject to certain risks, specifically market risk (which affects the cost and ability to secure reinsurance contracts) and credit risk (which relates to the ability to collect from the reinsurer on our claims). We purchase reinsurance from financially strong reinsurers. We evaluate reinsurers’ ability to pay based on their financial results, level of surplus, financial strength ratings and other risk characteristics. A reinsurance committee, comprised of senior management, reviews and approves our security guidelines and reinsurer usage. More than 93 percent of our reinsurance recoverables are due from companies with financial strength ratings of “A” or better by A.M. Best and Standard & Poor’s rating services. For more information regarding our largest reinsurers, see note 5 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data.

We utilize both treaty and facultative reinsurance coverage for our risks. Treaty coverage refers to a reinsurance contract under which the company agrees to cede all risks within a defined class of business to the reinsurer, who agrees to provide coverage on all risks ceded without individual underwriting. Facultative coverage is applied to individual risks at the company’s discretion and is subject to underwriting by the reinsurer. It is used for a variety of reasons, including supplementing the limits provided by the treaty coverage or covering risks or perils excluded from treaty reinsurance.

Much of our reinsurance is purchased on an excess of loss basis. Under an excess of loss arrangement, we retain losses on a risk up to a specified amount and the reinsurers assume any losses above that amount. We may choose to participate in the reinsurance layers purchased by retaining a percentage of the layer. It is common to find conditions in excess of loss covers such as occurrence limits, aggregate limits and reinstatement premium charges. Occurrence limits cap our recovery for multiple losses caused by the same event. Aggregate limits cap our recovery for all losses ceded during the contract term. We may be required to pay additional premium to reinstate or have access to use the reinsurance limits for potential future recoveries during the same contract year. Some property and surety treaties include reinstatement provisions which require the Company, in certain circumstances, to pay reinstatement premiums after a loss has occurred in order to preserve coverage.

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Excluding CAT reinsurance, the table below summarizes the reinsurance treaty coverage currently in effect. We may purchase facultative coverage in excess of the per risk limits shown.

	(in millions)
					Per Risk
		Renewal	Attachment		Limit		Maximum
Product Line(s) Covered	Contract Type	Date	Point		Purchased		Retention		*
General liability	Excess of Loss	1/1	$	1.0	$	9.0	$	1.9
Commercial excess	Excess of Loss	1/1		1.0		9.0		1.9
Personal umbrella and eXS	Excess of Loss	1/1		1.0		9.0		1.9
Commercial transportation	Excess of Loss	1/1		0.5		4.5		1.1
Package - liability and workers' comp	Excess of Loss	1/1		1.0		10.0		1.9
Workers' compensation catastrophe	Excess of Loss	1/1		11.0		14.0		—	**
Medical professional liability	Excess of Loss	1/1		1.0		9.0		1.9
Professional services - professional liability	Excess of Loss	4/1		1.0		9.0		3.3
Executive products	Quota Share	7/1		N/A		25.0		8.8
Property - risk cover	Excess of Loss	1/1		1.0		24.0		1.2
Marine	Excess of Loss	6/1		2.0		28.0		2.0
Surety	Excess of Loss	4/1		2.0		73.0		9.7	***

*Maximum retention includes first-dollar retention plus any co-participation we retain through the reinsurance tower.

**The workers’ compensation catastrophe treaty responds after our package liability and workers’ compensation excess of loss treaty with no additional retention.

***A limited number of commercial and energy surety accounts are permitted to exceed the $75.0 million limit. These accounts are subject to additional levels of review and are monitored on a monthly basis.

At each renewal, we consider any plans to change the underlying insurance coverage we offer, as well as updated loss activity, the level of RLI Insurance Group’s surplus, changes in our risk appetite and the cost and availability of reinsurance treaties. In the last renewal cycle, we maintained similar retentions on most lines of business.

PROPERTY REINSURANCE — CATASTROPHE COVERAGE

Our property CAT reinsurance reduces the financial impact of a CAT event involving multiple claims and policyholders. Reinsurance limits purchased fluctuate due to changes in the amount of exposure we insure, reinsurance costs, insurance company surplus levels and our risk appetite. In addition, we monitor the expected rate of return for each of our CAT lines of business. At high rates of return, we grow the book of business and may purchase additional reinsurance to increase our capacity. As the rate of return decreases, we shrink the book and may purchase less reinsurance as this capacity becomes unnecessary. Our reinsurance coverage for the last three years and for 2019 are shown in the following table:

Catastrophe Coverages

(in millions)

	2019			2018			2017			2016
	First- Dollar Retention		Limit	First- Dollar Retention		Limit	First- Dollar Retention		Limit	First- Dollar Retention		Limit
California Earthquake	$	25	400	$	25	300	$	25	300	$	25	300
Non-California Earthquake		25	425		25	325		25	325		25	325
Other Perils		25	275		25	225		25	225		25	225

These CAT limits are in addition to the per-occurrence coverage provided by facultative and other treaty coverages. We have participated in the CAT layers purchased by retaining a percentage of each layer throughout this period. Our participation has varied based on price and the amount of risk transferred by each layer. Since 2014, all layers of the treaty have included one prepaid reinstatement.

Our property CAT program continues to be applied on an excess of loss basis. It attaches after all other reinsurance has been considered. Although covered in one program, limits and attachment points differ for California earthquakes and all other

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perils. The following charts use information from our CAT modeling software to illustrate our pre-tax net retention resulting from particular events that would generate the gross losses.

Catastrophe - California Earthquake

(in millions)

		2019				2018				2017
Projected		Ceded		Net		Ceded		Net		Ceded		Net
Gross Loss		Losses		Losses		Losses		Losses		Losses		Losses
$	50	$	29	$	21	$	29	$	21	$	29	$	21
	100		73		27		72		28		73		27
	200		163		37		163		37		163		37
	300		257		43		256		44		256		44
	450		396		54		391		59		395		55

Catastrophe - Other (Earthquake outside of California, Wind, Other)

(in millions)

		2019				2018				2017
Projected		Ceded		Net		Ceded		Net		Ceded		Net
Gross Loss		Losses		Losses		Losses		Losses		Losses		Losses
$	25	$	7	$	18	$	6	$	19	$	5	$	20
	50		24		26		24		26		20		30
	100		63		37		64		36		59		41
	200		144		56		143		57		146		54
	300		226		74		224		76		231		69

In the above table, projected losses for 2019 were estimated based on our exposure as of December 31, 2018, utilizing the treaty structure in place as of January 1, 2019. All previous years were estimated similarly by utilizing the treaty structure in place at the start of the listed year and the exposure at the end of the previous year.

The previous tables were generated using theoretical probabilities of events occurring in areas where our portfolio of currently in-force policies could generate the level of loss illustrated. Actual results could vary significantly from these tables as the actual nature or severity of a particular event cannot be predicted with any reasonable degree of accuracy. Reinsurance limits are purchased based on the anticipated losses from large events. The largest losses shown above are possible, but have a low probability of actually occurring. However, there is a remote chance that a larger event could occur. If the actual event losses are larger than anticipated, we could retain additional losses above the limit of our CAT reinsurance.

We continuously monitor and quantify our exposure to catastrophes including earthquakes, hurricanes, floods, convective storms, terrorist acts and other aggregating events. In the normal course of business, we manage our concentrations of exposures to catastrophic events, primarily by limiting concentrations of locations insured to acceptable levels and by purchasing reinsurance. Exposure and coverage detail is recorded for each risk location. We quantify and monitor the total policy limit insured in each geographical region. In addition, we use third-party CAT exposure models and an internally developed analysis to assess each risk to ensure we include an appropriate charge for assumed CAT risks. CAT exposure modeling is inherently uncertain due to the model’s reliance on an infrequent observation of actual events and exposure data, increasing the importance of capturing accurate policy coverage data. The model results are used both in the underwriting analysis of individual risks and at a corporate level for the aggregate book of CAT-exposed business. From both perspectives, we consider the potential loss produced by individual events that represent moderate-to-high loss potential at varying probabilities and magnitudes. In calculating potential losses, we select appropriate assumptions including, but not limited to, loss amplification and loss adjustment expense. We establish risk tolerances at the portfolio level based on market conditions, the level of reinsurance available, changes to the assumptions in the CAT models, rating agency capital constraints, underwriting guidelines and coverages and internal preferences. Our risk tolerances for each type of CAT, and for all perils in aggregate, change over time as these internal and external conditions change. We are required to report to the rating agencies estimated loss to a single event that could include all potential earthquakes and hurricanes contemplated by the CAT modeling software. This reported loss includes the impact of insured losses based on the estimated frequency and severity of potential events, loss adjustment expense, reinstatements paid after the loss, reinsurance recoveries and taxes. Based on the CAT reinsurance treaty purchased on January 1, 2019, there is a 99.6 percent likelihood that the loss will be less than 16.2 percent of policyholders’ surplus as of December 31, 2018. The exposure levels are within our tolerances for this risk.

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LOSSES AND SETTLEMENT EXPENSES

OVERVIEW

Loss and loss adjustment expense (LAE) reserves represent our best estimate of ultimate payments for losses and related settlement expenses from claims that have been reported but not paid and losses that have been incurred but not yet reported to the Company (IBNR). Loss reserves do not represent an exact calculation of liability, but instead represent our estimates, generally utilizing individual claim estimates, actuarial expertise and estimation techniques at a given accounting date. The loss reserve estimates are expectations of what ultimate settlement and administration of claims will cost upon final resolution. These estimates are based on facts and circumstances then known to the Company, review of historical settlement patterns, estimates of trends in claims frequency and severity, projections of loss costs, expected interpretations of legal theories of liability and many other factors. In establishing reserves, we also take into account estimated recoveries from reinsurance, salvage and subrogation. The reserves are reviewed regularly by a team of actuaries we employ.

Net loss and loss adjustment reserves by product line at year-end 2018 and 2017 are illustrated in the following table. LAE is classified in the table as either allocated loss adjustment expense (ALAE) or unallocated loss adjustment expense (ULAE). ALAE refers to estimates of claim settlement expenses that can be identified with a specific claim or case, while ULAE cannot be identified with a specific claim. For a detailed discussion of loss reserves, refer to our critical accounting policy in Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations.

(as of December 31, in thousands)	2018						2017
Product Line	Case		IBNR		Total		Case		IBNR		Total
Casualty segment net loss and ALAE reserves
Commercial excess	$	8,172	$	122,690	$	130,862	$	9,724	$	99,745	$	109,469
Personal umbrella		21,208		42,203		63,411		21,452		39,395		60,847
General liability		68,295		171,640		239,935		78,360		149,102		227,462
Commercial transportation		87,544		46,015		133,559		81,543		38,161		119,704
Professional services		35,127		85,002		120,129		28,543		81,558		110,101
Small commercial		19,351		37,885		57,236		12,075		34,344		46,419
Executive products		21,617		47,581		69,198		11,327		44,484		55,811
Medical professional liability		19,087		21,058		40,145		16,621		10,526		27,147
Other casualty		10,763		49,208		59,971		6,595		31,302		37,897
Property segment net loss and ALAE reserves
Commercial property		26,012		13,021		39,033		21,375		10,615		31,990
Marine		11,426		20,189		31,615		11,512		18,095		29,607
Specialty personal		2,465		3,490		5,955		1,989		3,525		5,514
Other property		2,060		3,751		5,811		3,348		6,682		10,030
Surety segment net loss and ALAE reserves
Miscellaneous		2,932		3,769		6,701		2,550		5,035		7,585
Contract		4,311		7,639		11,950		(1,939)		7,638		5,699
Commercial		137		5,482		5,619		1,686		6,276		7,962
Energy		2,195		3,244		5,439		2,843		2,254		5,097
Latent liability net loss and ALAE reserves		5,061		13,828		18,889		6,532		15,795		22,327
Total net loss and ALAE reserves	$	347,763	$	697,695	$	1,045,458	$	316,136	$	604,532	$	920,668
ULAE reserves		—		50,891		50,891		—		48,844		48,844
Total net loss and LAE reserves	$	347,763	$	748,586	$	1,096,349	$	316,136	$	653,376	$	969,512

Following is a table of significant risk factors involved in estimating losses grouped by major product line. We distinguish between loss ratio risk and reserve estimation risk. Loss ratio risk refers to the possible dispersion of loss ratios from year to year due to inherent volatility in the business, such as high severity or aggregating exposures. Reserve estimation risk recognizes the difficulty in estimating a given year’s ultimate loss liability. As an example, our property CAT business (included below in “other property”) has significant variance in year over year results; however, its reserving estimation risk is relatively moderate.

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Significant Risk Factors

		Emergence		Expected loss	Reserve
	Length of	patterns relied		ratio	estimation
Product line	Reserve Tail	upon	Other risk factors	variability	variability
Commercial excess	Long	Internal	Low frequency	High	High
			High severity
			Loss trend volatility
			Exposure growth
			Unforeseen tort potential
			Exposure changes/mix
Personal umbrella	Medium	Internal	Low frequency	Medium	Medium
			High severity
			Loss trend volatility
			Exposure growth
			Unforeseen tort potential
General liability	Long	Internal	Exposure changes/mix	Medium	High
			Unforeseen tort potential
Commercial transportation	Medium	Internal	High severity	Medium	Medium
			Exposure growth/mix
			Loss trend volatility
			Unforeseen tort potential
Professional services	Medium	Internal & external	Highly varied exposures	Medium	Medium
			Loss trend volatility
			Unforeseen tort potential
Small commercial	Long	Internal	Exposure growth/mix	Medium	Medium
			Unforeseen tort potential
			Small volume
Executive products	Long	Internal & significant external	Low frequency	High	High
			High severity
			Loss trend volatility
			Economic volatility
			Unforeseen tort potential
			Exposure growth/mix
			Small volume
Medical professional liability	Long	External	High severity	High	High
			Exposure changes/mix
			Unforeseen tort potential
			Small volume
			Loss trend volatility
Other casualty	Medium	Internal & external	Small volume	Medium	Medium
Marine	Medium	Internal & external	Exposure growth/mix	High	High
Other property	Short	Internal	CAT aggregation exposure	High	Medium
			Low frequency
			High severity
Surety	Medium	Internal	Economic volatility	Medium	Medium
			Uniqueness of exposure
Runoff including asbestos &	Long	Internal & external	Loss trend volatility	High	High
environmental			Mass tort/latent exposure

On a quarterly basis, actuaries perform a ground-up reserve study of the expected value of the unpaid loss and LAE derived using multiple standard actuarial methodologies that are described below. In addition, an emergence analysis is completed quarterly to determine if further adjustments are necessary. The purpose of this analysis is to provide validation of our carried loss reserves. These estimates are then compared to the carried loss reserves to determine the appropriateness of the current reserve balance.

The methodologies we have chosen to incorporate are a function of data availability and are reflective of our own book of business. From time to time, we evaluate the need to add supplementary methodologies. New methods are incorporated if it is

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believed they improve the estimate of our ultimate loss and LAE liability. All of the actuarial methods eventually converge to the same estimate as an accident year matures. Our core methodologies are listed below with a short description and their relative strengths and weaknesses:

Paid Loss Development — Historical payment patterns for prior claims are used to estimate future payment patterns for current claims. These patterns are applied to current payments by accident year to yield an expected ultimate loss.

Strengths:  The method reflects only the claim dollars that have been paid and is not subject to case-basis reserve changes or changes in case reserve practices.

Weaknesses:  External claims environment changes can impact the rate at which claims are settled and losses paid (e.g. increase in attorney involvement or legal precedent). Adjustments to reflect changes in payment patterns on a prospective basis are difficult to quantify. For losses that have occurred recently, payments can be minimal and thus early estimates are subject to significant instability.

Incurred Loss Development — Historical case-incurred patterns (paid losses plus case reserves) for past claims are used to estimate future case-incurred amounts for current claims. These patterns are applied to current case-incurred losses by accident year to yield an expected ultimate loss.

Strengths:  Losses are reported more quickly than paid, therefore, the estimates stabilize sooner. The method reflects more information in the analysis than the paid loss development method.

Weaknesses:  Method involves additional estimation risk if significant changes to case reserving practices have occurred.

Case Reserve Development — Patterns of historical development in reported losses relative to historical case reserves are determined. These patterns are applied to current case reserves by accident year and the result is combined with paid losses to yield an expected ultimate loss.

Strengths:  Like the incurred development method, this method benefits from using the additional information available in case reserves that is not available from paid losses only. It also can provide a more reasonable estimate than other methods when the proportion of claims still open for an accident year is unusually high or low.

Weaknesses:  It is subject to the risk of changes in case reserving practices or philosophy. It may provide unstable estimates when an accident year is immature and more of the IBNR is expected to come from unreported claims rather than development on reported claims and when accident years are very mature with infrequent case reserves.

Expected Loss Ratio — Historical loss ratios, in combination with projections of frequency and severity trends, as well as estimates of price and exposure changes, are analyzed to produce an estimate of the expected loss ratio for each accident year. The expected loss ratio is then applied to the earned premium for each year to estimate the expected ultimate losses. The current accident year expected loss ratio is also the prospective loss and ALAE ratio used in our initial IBNR generation process.

Strengths:  Reflects an estimate independent of how losses are emerging on either a paid or a case reserve basis. This method is particularly useful in the absence of historical development patterns or where losses take a long time to emerge.

Weaknesses:  Ignores how losses are actually emerging and thus produces the same estimate of ultimate loss regardless of favorable/unfavorable emergence.

Paid and Incurred Bornhuetter/Ferguson (BF) — This approach blends the expected loss ratio method with either the paid or incurred loss development method. In effect, the BF methods produce weighted average indications for each accident year. As an example, if the current accident year for commercial automobile liability is estimated to be 20 percent paid, then the paid loss development method would receive a weight of 20 percent and the expected loss ratio method would receive an 80 percent weight. Over time, this method will converge with the ultimate estimated by the respective loss development method.

Strengths:  Reflects actual emergence that is favorable/unfavorable, but assumes remaining emergence will continue as previously expected. Does not overreact to the early emergence (or lack of emergence) where patterns are most unstable.

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Weaknesses:  Could potentially understate favorable or unfavorable development by putting weight on the expected loss ratio.

In most cases, multiple estimation methods will be valid for the particular facts and circumstances of the claim liabilities being evaluated. Each estimation method has its own set of assumption variables and its own advantages and disadvantages, with no single estimation method being better than the others in all situations, and no one set of assumption variables being meaningful for all product line components. The relative strengths and weaknesses of the particular estimation methods, when applied to a particular group of claims, can also change over time. Therefore, the weight given to each estimation method will likely change by accident year and with each evaluation.

The actuarial central estimates typically follow a progression that places significant weight on the BF methods when accident years are younger and claim emergence is immature. As accident years mature and claims emerge over time, increasing weight is placed on the incurred development method, the paid development method and the case reserve development method. For product lines with faster loss emergence, the progression to greater weight on the incurred and paid development methods occurs more quickly.

For our long and medium-tail products, the BF methods are typically given the most weight for the first 36 months of evaluation. These methods are also predominant for the first 12 months of evaluation for short-tail lines. Beyond these time periods, our actuaries apply their professional judgment when weighting the estimates from the various methods deployed but place significant reliance on the expected stage of development in normal circumstances.

Judgment can supersede this natural progression if risk factors and assumptions change, or if a situation occurs that amplifies a particular strength or weakness of a methodology. Extreme projections are critically analyzed and may be adjusted, given less credence or discarded altogether. Internal documentation is maintained that records any substantial changes in methods or assumptions from one loss reserve study to another.

RESERVE SENSITIVITIES

There are three major parameters that have significant influence on our actuarial estimates of ultimate liabilities by product. They are the actual losses that are reported, the expected loss emergence pattern and the expected loss ratios used in the analyses. If the actual losses reported do not emerge as expected, it may cause the Company to challenge all or some of its previous assumptions. We may change expected loss emergence patterns, the expected loss ratios used in our analysis and/or the weights we place on a given actuarial method. The impact will be much greater and more leveraged for products with longer emergence patterns. Our general liability product is an example of a product with a relatively long emergence pattern. We have constructed a chart that illustrates the sensitivity of our general liability reserve estimates to these key parameters. We believe the scenarios to be reasonable as similar favorable variations have occurred in recent years. For example, while our general liability emergence has ranged from 8 percent to 18 percent favorable over the last three years, our emergence for all products combined, excluding general liability, has ranged from 5 percent to 18 percent favorable. The numbers below are the changes in estimated ultimate loss and ALAE in millions of dollars as of December 31, 2018, resulting from the change in the parameters shown. These parameters were applied to a general liability net loss and LAE reserve balance of $239.9 million,  in addition to associated ULAE and latent liability reserves, at December 31, 2018.

	Result from favorable		Result from unfavorable
(in millions)	change in parameter		change in parameter
+/-5 point change in expected loss ratio for all accident years	$	(9.0)	$	9.0
+/-10% change in expected emergence patterns	$	(6.5)	$	6.2
+/-30% change in actual loss emergence over a calendar year	$	(13.3)	$	13.3
Simultaneous change in expected loss ratio (5pts), expected emergence patterns (10%), and actual loss emergence (30%).	$	(28.1)	$	29.1

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There are often significant inter-relationships between our reserving assumptions that have offsetting or compounding effects on the reserve estimate. Thus, in almost all cases, it is impossible to discretely measure the effect of a single assumption or construct a meaningful sensitivity expectation that holds true in all cases. The scenario above is representative of general liability, one of our largest and longest-tailed products. It is unlikely that all of our products would have variations as wide as illustrated in the example. It is also unlikely that all of our products would simultaneously experience favorable or unfavorable loss development in the same direction or at their extremes during a calendar year. Because our portfolio is made up of a diversified mix of products, there would ordinarily be some offsetting favorable and unfavorable emergence by product as actual losses start to emerge and our loss estimates become more reliable.

OPERATING RATIOS

PREMIUMS TO SURPLUS RATIO

The following table shows, for the periods indicated, our insurance subsidiaries’ statutory ratios of net premiums written to policyholders’ surplus. While there is no statutory requirement applicable to the Company that establishes a permissible net premiums written to surplus ratio, guidelines established by the National Association of Insurance Commissioners (NAIC) provide that this ratio should generally be no greater than 3 to 1. While the NAIC provides this general guideline, rating agencies often require a more conservative ratio to maintain strong or superior ratings.

	Year Ended December 31,
(dollars in thousands)	2018		2017		2016		2015		2014
Statutory net premiums written	$	823,175	$	749,854	$	740,952	$	722,189	$	703,152
Policyholders’ surplus		829,775		864,554		859,976		865,268		849,297
Ratio		1.0 to 1		0.9 to 1		0.9 to 1		0.8 to 1		0.8 to 1

GAAP AND STATUTORY COMBINED RATIOS

Our underwriting experience is best indicated by our GAAP combined ratio, which is the sum of (a) the ratio of incurred losses and settlement expenses to net premiums earned (loss ratio) and (b) the ratio of policy acquisition costs and other operating expenses to net premiums earned (expense ratio). The difference between the combined ratio and 100 reflects the per-dollar rate of underwriting income or loss, with ratios below 100 indicating underwriting profit and ratios above 100 indicating underwriting loss.

	Year Ended December 31,
GAAP	2018	2017	2016	2015	2014
Loss ratio	54.1	54.4	48.0	42.7	43.2
Expense ratio	40.6	42.0	41.5	41.8	41.3
Combined ratio	94.7	96.4	89.5	84.5	84.5

We also calculate the statutory combined ratio, which is not indicative of GAAP underwriting income due to accounting for policy acquisition costs differently for statutory accounting purposes compared to GAAP. The statutory combined ratio is the sum of (a) the ratio of statutory loss and settlement expenses incurred to statutory net premiums earned (loss ratio) and (b) the ratio of statutory policy acquisition costs and other underwriting expenses to statutory net premiums written (expense ratio). The difference between the combined ratio and 100 reflects the per-dollar rate of underwriting income or loss.

	Year Ended December 31,
Statutory	2018		2017		2016		2015		2014
Loss ratio	54.1		54.4		48.0		42.7		43.2
Expense ratio	39.9		41.8		41.0		41.2		40.9
Combined ratio	94.0		96.2		89.0		83.9		84.1
P&C industry combined ratio	99.4	*	103.9	**	100.7	**	97.9	**	97.2	**

*Source:  Conning (2018). Property-Casualty Forecast & Analysis: By Line of Insurance, Fourth Quarter 2018. Estimated for the year ended December 31, 2018.

**Source:  A.M. Best (2018). Aggregate & Averages – Property/Casualty, United States & Canada. 2014 – 2017.

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INVESTMENTS

Our investment portfolio serves as the primary resource for loss payments and secondly as a source of income to support operations. Our investment strategy is based on preservation of capital as the first priority, with a secondary focus on growing book value through total return. Investments of the highest quality and marketability are critical for preserving our claims-paying ability. Our portfolio contains no derivatives or off-balance sheet structured investments. In addition, we have a diversified investment portfolio that distributes credit risk across many issuers and a policy that limits aggregate credit exposure. Despite periodic fluctuations in market value, our equity portfolio is part of a long-term asset allocation strategy and has contributed significantly to our growth in book value.

Investment portfolios are managed both internally and externally by experienced portfolio managers. We follow an investment policy that is reviewed quarterly and revised periodically, with oversight conducted by our senior officers and board of directors.

Our investments include fixed income debt securities, common stock equity securities, exchange traded funds (ETFs) and a small number of limited partnership interests. The fixed income portfolio increased to 80 percent of the total portfolio, while the equity allocation declined to 16 percent of the overall portfolio. Other invested assets represented 2 percent of the total portfolio and include investments in low income housing tax credit partnerships, membership stock in the Federal Home Loan Bank of Chicago and investments in private funds. The remaining 2 percent was made up of cash and cash equivalents. As of December 31, 2018, 84 percent of the fixed income portfolio was rated A or better and 64 percent was rated AA or better.

We classify all of the securities in our fixed income portfolio as available-for-sale, which are carried at fair value. Beyond available operating cash flow, the portfolio provides an additional source of liquidity and can be used to address potential future changes in our asset/liability structure.

Aggregate maturities for the fixed-income portfolio as of December 31, 2018, are as follows:

	Par		Amortized		Fair		Carrying
(in thousands)	Value		Cost		Value		Value
2019	$	41,303	$	41,319	$	41,333	$	41,333
2020		62,908		62,723		62,382		62,382
2021		133,843		134,661		134,556		134,556
2022		92,805		93,779		93,421		93,421
2023		119,041		119,991		120,321		120,321
2024		101,398		103,602		102,314		102,314
2025		188,572		190,550		189,259		189,259
2026		127,478		126,953		125,060		125,060
2027		120,870		121,652		119,678		119,678
2028		69,847		72,303		71,804		71,804
2029		41,445		45,912		47,244		47,244
2030		36,264		40,214		40,595		40,595
2031		14,510		16,148		16,299		16,299
2032		5,520		6,405		6,496		6,496
2033		5,266		6,349		6,314		6,314
2034 and later		51,490		53,688		51,464		51,464
Total excluding
Mtge/ABS/CMBS*	$	1,212,560	$	1,236,249	$	1,228,540	$	1,228,540
Mtge/ABS/CMBS*	$	533,232	$	540,216	$	531,975	$	531,975
Grand Total	$	1,745,792	$	1,776,465	$	1,760,515	$	1,760,515

*Mortgage-backed, asset-backed & commercial mortgage-backed

We had cash, short-term investments and fixed income securities maturing within one year of $83.0 million at year-end 2018. This total represented 4 percent of cash and investments, compared to 2 percent at year-end 2017. Our short-term investments consist of investments with original maturities of 90 days or less, primarily AAA-rated prime and government money market funds.

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REGULATION

STATE REGULATION

As an insurance holding company, we, as well as our insurance company subsidiaries, are subject to regulation by the states and territories in which the insurance subsidiaries are domiciled or transact business. Registration in each insurer’s state of domicile requires periodic reporting to such state’s insurance regulatory authority of the financial, operational and management information regarding the insurers within the holding company system. All transactions within a holding company system affecting insurers must have fair and reasonable terms, and the insurers’ policyholders’ surplus following any transaction must be both reasonable in relation to its outstanding liabilities and adequate for its needs. Notice to and, in some cases, consent from regulators is required prior to the consummation of certain transactions affecting insurance company subsidiaries of the holding company system. Each state and territory individually regulates the insurance operations of both insurance companies and insurance agents/brokers. Most insurance regulations are designed to protect the interests of policyholders rather than shareholders and other investors.

Two primary focuses of state regulation of insurance companies are financial solvency and market conduct practices. Regulations designed to ensure financial solvency of insurers are enforced by various filing, reporting and examination requirements. Marketplace oversight is conducted by monitoring and periodically examining trade practices, approving policy forms, licensing of agents and brokers and requiring the filing and, in some cases, approval of premiums and commission rates to ensure they are fair and adequate.

Because our insurance company subsidiaries operate in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands and Guam, we must comply with the individual insurance laws, regulations, rules and case law of each state and territory, including those regulating the filing of insurance rates and forms. Each of our three insurance company subsidiaries is domiciled in Illinois, with the Illinois Department of Insurance (IDOI) as its principal insurance regulator.

As a holding company, the amount of dividends we are able to pay depends upon the funds available for distribution, including dividends or distributions from our subsidiaries. The insurance laws applicable to our insurance company subsidiaries impose certain restrictions on their ability to pay dividends. The insurance holding company laws require that ordinary dividends paid by an insurance company be reported to the insurer’s domiciliary regulator prior to payment of the dividend and that extraordinary dividends may not be paid without such regulator’s prior approval (or non-disapproval). An extraordinary dividend is generally defined under Illinois law as a dividend that, together with all other dividends made within the past 12 months, exceeds the greater of 100 percent of the insurer’s statutory net income for the 12-month period ending as of December 31 of the preceding year or 10 percent of the insurer’s statutory policyholders’ surplus as of the preceding year-end. Insurance regulators have broad powers to prevent the reduction of statutory surplus to inadequate levels, and there is no assurance that extraordinary dividend payments would be permitted.

In addition, changes to the state insurance regulatory requirements are frequent, including changes caused by state legislation, regulations by the state insurance departments and court rulings. State insurance regulators are members of the NAIC. The NAIC is a non-governmental regulatory support organization that seeks to promote uniformity and to enhance state regulation of insurance through various activities, initiatives and programs. Among other regulatory and insurance company support activities, the NAIC maintains a state insurance department accreditation program and proposes model laws, regulations and guidelines for approval by state legislatures and insurance regulators. Such proposed laws and regulations cover areas including risk assessments, corporate governance and financial and accounting rules. To the extent such proposed model laws and regulations are adopted by states, they will apply to insurance carriers.

In December 2010, the NAIC adopted amendments to the Insurance Holding Company System Regulatory Act and Model Regulation (Amended Holding Company Model Act). The Amended Holding Company Model Act introduces the concept of “enterprise risk” within an insurance holding company system and imposes more extensive informational requirements on parents and other affiliates of licensed insurers or reinsurers, with the purpose of protecting the licensed companies from enterprise risk, including requiring an annual enterprise risk report by the ultimate controlling person identifying the material risks within the insurance holding company system that could pose enterprise risk to the licensed companies. An enterprise risk is generally defined as an activity or event involving affiliates of an insurer that could have a material adverse effect on the insurer or the insurer’s holding company system. Illinois has adopted a version of the Amended Holding Company Model Act. We are in compliance with the enterprise risk reporting requirements as adopted by Illinois.

The Own Risk and Solvency Assessment (ORSA) model act was developed by the NAIC and proposed for adoption by each state insurance regulatory department. Illinois has adopted the Risk Management and ORSA Law, applicable to Illinois-

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domiciled insurance companies meeting certain size requirements, including ours. The ORSA program is a key component of an insurance company’s overall enterprise risk management (ERM) framework, which is the process by which organizations identify, measure, monitor and manage key risks affecting the entire enterprise. An ORSA summary report, filed by the Company with the IDOI each year, is an internal identification, description and assessment of the risks associated with our business plan, and the sufficiency of capital resources to support those risks.

The NAIC uses a risk-based capital (RBC) model to monitor and regulate the solvency of licensed property and casualty insurance companies. Illinois has adopted a version of the NAIC’s model law. The RBC calculation is used to measure an insurer’s capital adequacy with respect to: the risk characteristics of the insurer’s premiums written and unpaid losses and loss adjustment expenses, rate of growth and quality of assets, among other measures. Depending on the results of the RBC calculation, insurers may be subject to varying degrees of regulatory action. RBC is calculated annually by insurers, as of December 31 of each year. As of December 31, 2018, each of our insurance company subsidiaries had RBC levels significantly in excess of the company action level RBC, defined as being 200 percent of the authorized control level RBC, which would prompt corrective action under Illinois law.  RLI Ins., our principal insurance company subsidiary, had an authorized control level RBC of $170.9 million compared to actual statutory capital and surplus of $829.8 million as of December 31, 2018, resulting in a statutory capital to authorized control level RBC ratio of 489 percent. The calculation of RBC requires certain judgments to be made, and, accordingly, each of our insurance company subsidiaries’ current RBC may be greater or less than the RBC calculated as of any date of determination.

Each of our insurance company subsidiaries is required to file detailed annual reports, including financial statements, in accordance with prescribed statutory accounting rules, with regulatory officials in the jurisdictions in which they conduct business. The quarterly and annual financial reports filed with the states utilize statutory accounting principles (SAP) that are different from U.S. GAAP. As a basis of accounting, SAP was developed to monitor and regulate the solvency of insurance companies. In developing SAP, insurance regulators were primarily concerned with assuring an insurer’s ability to pay all its current and future obligations to policyholders. As a result, statutory accounting focuses on conservatively valuing the assets and liabilities of insurers, generally in accordance with standards specified by the insurer’s domiciliary state. The values for assets, liabilities and equity reflected in financial statements prepared in accordance with U.S. GAAP are usually different from those reflected in financial statements prepared under SAP.

As part of their routine regulatory oversight process, state insurance departments conduct periodic detailed examinations, generally once every three to five years, of the books, records, accounts and operations of insurance companies that are domiciled in their states. Examinations are generally carried out in cooperation with the insurance departments of other, non-domiciliary states under guidelines promulgated by the NAIC. The most recent examination report of our insurance company subsidiaries completed by the IDOI was issued on November 27, 2018 for the five-year period ending December 31, 2017. The examination report is available to the public.

Each of our insurance company subsidiaries is subject to Illinois laws and regulations that impose restrictions on the amount and type of investments our insurance company subsidiaries may have. Such laws and regulations generally require diversification of the insurer’s investment portfolio and limit the amounts of investments in certain asset categories, such as below investment grade fixed income securities, real estate-related equity, other equity investments and derivatives. Failure to comply with these laws and regulations would generally cause investments that exceed regulatory limitations to be treated as non-admitted assets for measuring statutory surplus and, in some instances, could require the divestiture of such non-qualifying investments.

Many jurisdictions have laws and regulations that limit an insurer’s ability to withdraw from a particular market. For example, states may limit an insurer’s ability to cancel or non-renew policies. Furthermore, certain states prohibit an insurer from withdrawing one or more lines of business from the state, except pursuant to a plan that is approved by the state insurance department. The state insurance department may disapprove a withdrawal plan that may lead to marketplace disruption. Laws and regulations that limit cancellation and non-renewal, and that subject program withdrawals to prior approval requirements, may restrict our ability to exit unprofitable marketplaces in a timely manner.

Virtually all states require licensed insurers to participate in various forms of guaranty associations in order to bear a portion of the loss suffered by qualified policyholders of insurance companies that become insolvent. Depending upon state law, licensed insurers can be assessed a small percentage of the annual premiums written for the relevant lines of insurance in that state to contribute to paying the claims of insolvent insurers. These assessments may increase or decrease in the future, depending upon the rate of insurance company insolvencies. In some states, these assessments may be wholly or partially recovered through policy fees paid by insureds. We cannot predict the amount and timing of future assessments. Therefore, the

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liabilities we have currently established for these potential assessments may not be adequate and an assessment may materially impact our financial condition.

In addition, the insurance holding company laws require advance approval by state insurance commissioners of any change in control of an insurance company that is domiciled, or in some cases, having such substantial business that it is deemed to be commercially domiciled in that state. “Control” is generally presumed to exist through the ownership of 10 percent or more of the voting securities of a domestic insurance company or of any company that controls a domestic insurance company. In addition, insurance laws in many states contain provisions that require pre-notification to the insurance commissioners of a change in control of a non-domestic insurance company licensed in those states. Any future transactions that would constitute a change in control of our insurance company subsidiaries, including a change of control of RLI, would generally require the party acquiring control to obtain the prior approval by the insurance departments of the insurance company subsidiaries’ state of domicile (Illinois) or commercial domicile, if applicable. It may also require pre-acquisition notification in applicable states that have adopted pre-acquisition notification provisions. Obtaining these approvals could result in a material delay of, or deter, any such transaction.

In light of the number and severity of recent U.S. company data breaches, some states have recently enacted new insurance laws that require certain regulated entities to implement and maintain comprehensive information security programs to safeguard the personal information of insureds. In 2017, the New York State Department of Financial Services (NYDFS) enacted a cybersecurity regulation. This regulation requires banks, insurance companies and other financial services institutions regulated by the NYDFS to establish and maintain a cybersecurity program “designed to protect consumers and ensure the safety and soundness of New York State’s financial services industry.” We are implementing the requirements of the regulation and are in compliance with those phases already enacted. We anticipate that the NYDFS will examine the cybersecurity programs of financial institutions in the future and that may result in additional regulatory scrutiny, expenditure of resources and possible regulatory actions and reputational harm.

In October 2017, the NAIC adopted a new Insurance Data Security Model Law. The law is intended to establish the standards for data security and standards for the investigation and notification of data breaches applicable to insurance licensees in states adopting such law, with provisions that are generally consistent with the NYDFS cybersecurity regulation discussed above. As with all NAIC model laws, this model law must be adopted by a state before becoming law in the state. Currently, only South Carolina and Ohio have adopted this model law in some form. Illinois has not adopted a version of the Insurance Data Security Model Law. The NAIC has also adopted a guidance document that sets forth 12 principles for effective insurance regulation of cybersecurity risks. The document is based on similar regulatory guidance adopted by the Securities Industry and Financial Markets Association and the “Roadmap for Cybersecurity Consumer Protections,” which describes the protections to which the NAIC believes consumers should be entitled from their insurance companies, agents and other businesses concerning the collection and maintenance of consumers’ personal information, as well as what consumers should expect when such information has been involved in a data breach. We expect cybersecurity risk management, prioritization and reporting to continue to be an area of significant regulatory focus by such regulatory bodies and self-regulatory organizations.

The rates, policy terms and conditions of reinsurance agreements generally are not subject to regulation by any regulatory authority. However, the ability of a ceding insurer to take credit for the reinsurance purchased from reinsurance companies is a significant component of reinsurance regulation. Typically, a ceding insurer will only enter into a reinsurance agreement if it can obtain credit against its reserves on its statutory basis financial statements for the reinsurance ceded to the reinsurer. With respect to U.S.-domiciled ceding companies, credit is usually granted when the reinsurer is licensed or accredited in the state where the ceding company is domiciled. States also generally permit ceding insurers to take credit for reinsurance if the reinsurer is: (i) domiciled in a state with a credit for reinsurance law that is substantially similar to the credit for reinsurance law in the primary insurer’s state of domicile, and (ii) meets certain financial requirements. Credit for reinsurance purchased from a reinsurer that does not meet the foregoing conditions is generally allowed to the extent that such reinsurer secures its obligations with qualified collateral.

FEDERAL LEGISLATION AND REGULATION

The U.S. insurance industry is not currently subject to any significant federal regulation and instead is regulated principally at the state level. However, the federal Sarbanes-Oxley Act of 2002 (Sarbanes-Oxley Act), the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (Dodd-Frank Act) and creation of the Federal Insurance Office (summarized below) include elements that affect the insurance industry, insurance companies and public companies such as ours.

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The Sarbanes-Oxley Act established several significant corporate governance-related laws and SEC regulations applicable to public companies. The Dodd-Frank Act created significant changes in regulatory structures of banking and other financial institutions, created new governmental agencies (while merging and removing others), increased oversight of financial institutions and enhanced regulation of capital markets. The legislation also mandates new rules affecting executive compensation and corporate governance for public companies such as ours. Federal agencies have been given significant discretion in drafting the rules and regulations that will implement the Dodd-Frank Act. We will continue to monitor, implement and comply with all Dodd-Frank Act-related changes to our regulatory environment. Changes in general political, economic or market conditions, including the latest U.S. presidential and congressional elections, could affect the scope, timing and final implementation of the Dodd-Frank Act. We cannot predict if or when future legislation or administrative guidance will be enacted or issued or what impact any changing regulation may have on our operations.

In addition, the Dodd-Frank Act contains insurance industry-specific provisions, including establishment of the Federal Insurance Office (FIO) and streamlining the regulation and taxation of surplus lines insurance and reinsurance among the states. The FIO, part of the U.S. Department of the Treasury, has limited authority and no direct regulatory authority over the business of insurance. The FIO’s principal mandates include monitoring the insurance industry, collecting insurance industry information and data and representing the U.S. with international insurance regulators. Although the FIO does not provide substantive regulation of the insurance industry at this time, we will monitor its activities carefully for any regulatory impact on our company.

Furthermore, the Dodd-Frank Act authorized the U.S. Treasury Secretary and the Office of the U.S. Trade Representative to negotiate covered agreements. A covered agreement is an agreement between the U.S. and one or more foreign governments, authorities or regulatory entities, regarding prudential measures with respect to insurance or reinsurance. Pursuant to this authority, in September 2017, the U.S. and the European Union (EU) signed a covered agreement to address, among other things, reinsurance collateral requirements (Covered Agreement). The Covered Agreement became provisionally effective on November 7, 2017, following completion of the EU’s procedural requirements, but must be approved by the European Parliament before treated as “fully” effective. We cannot predict with any certainty whether the Covered Agreement will be implemented or what the impact of such implementation will be on our business.

As part of the passage of the Terrorism Risk Insurance Program Reauthorization Act (TRIPRA) in January 2015, the National Association of Registered Agents and Brokers (NARAB) was established by federal law, which is expected to streamline insurance agent/broker licensing. There has been little progress in implementing the provisions of NARAB to date.

Other federal laws and regulations apply to many aspects of our company and its business operations. This federal regulation includes, without limitation, laws affecting privacy and data security and credit reporting — examples of which include the Gramm-Leach-Bliley Act, Fair Credit Reporting Act and Fair and Accurate Credit Transactions Act. It also includes international economic and trade sanctions — examples of which include the Office of Foreign Asset Control (OFAC), Foreign Account Tax Compliance Act and the Iran Threat Reduction and Syrian Human Rights Act (ITR/SHR). ITR/SHR generally prohibits U.S. companies from engaging in certain transactions with the government of Iran or certain Iranian businesses, including the provision of insurance or reinsurance. Under ITR/SHR, we must disclose whether RLI Corp. or any of its affiliates knowingly engaged in certain specified activities identified in that law. For the year 2018, neither RLI Corp. nor its affiliates have knowingly engaged in any transaction or dealing reportable under Section 13(r) of the Exchange Act, as required by the ITR/SHR.

LICENSES AND TRADEMARKS

We hold a U.S. federal service mark registration of our corporate logo “RLI” and several other company service marks and trademarks with the U.S. Patent and Trademark Office. Such registrations protect our intellectual property nationwide from deceptively similar use. The duration of these registrations is 10 years, unless renewed. We monitor our trademarks and service marks and protect them from unauthorized use as necessary.

EMPLOYEES

As of December 31, 2018, we employed a total of 912 associates. Of the 912 total associates, 25 were part-time and 887 were full-time.

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FORWARD LOOKING STATEMENTS

Forward looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 appear throughout this report. These statements relate to our current expectations, beliefs, intentions, goals or strategies regarding the future and are based on certain underlying assumptions by the Company. These forward looking statements generally include words such as “expect,” “predict,” “estimate,” “will,” “should,” “anticipate,” “believe” and similar expressions. Such assumptions are, in turn, based on information available and internal estimates and analyses of general economic conditions, competitive factors, conditions specific to the property and casualty insurance and reinsurance industries, claims development and the impact thereof on our loss reserves, the adequacy and financial security of our reinsurance programs, developments in the securities market and the impact on our investment portfolio, regulatory changes and conditions and other factors and are subject to various risks, uncertainties and other factors, including, without limitation those set forth below in “Item 1A Risk Factors.” Actual results could differ materially from those expressed in, or implied by, these forward looking statements. We assume no obligation to update any such statements. You should review the various risks, uncertainties and other factors listed from time to time in our Securities and Exchange Commission filings.

Item 1A.  Risk Factors

Our results of operations and revenues may fluctuate as a result of many factors, including cyclical changes in the insurance industry, which may cause the price of our securities to be volatile.

The results of operations of companies in the property and casualty insurance industry historically have been subject to significant fluctuations and uncertainties. Our profitability can be affected significantly by:

· Competitive pressures impacting our ability to write new business or retain existing business at an adequate rate,

· Rising levels of loss costs that we cannot anticipate at the time we price our coverages,

· Volatile and unpredictable developments, including man-made, weather-related and other natural CATs, terrorist attacks or significant price changes of the commodities we insure,

· Changes in the level of reinsurance capacity,

· Changes in the amount of losses resulting from new types of claims and new or changing judicial interpretations relating to the scope of insurers’ liabilities and

· The ability of our underwriters to accurately select and price risk and our claim personnel to appropriately deliver fair outcomes.

In addition, the demand for property and casualty insurance, both admitted and excess and surplus lines, can vary significantly, rising as the overall level of economic activity increases and falling as that activity decreases, causing our revenues to fluctuate. These fluctuations in results of operations and revenues may not reflect long-term results and may cause the price of our securities to be volatile.

Adverse changes in the economy could lower the demand for our insurance products and could have an adverse effect on the revenue and profitability of our operations.

Factors such as business revenue, construction spending, government spending, the volatility and strength of the capital markets and inflation can all affect the business and economic environment. These same factors affect our ability to generate revenue and profits. Insurance premiums in our markets are heavily dependent on our customer revenues, values transported, miles traveled and number of new projects initiated. In an economic downturn characterized by higher unemployment, declines in construction spending and reduced corporate revenues, the demand for insurance products is adversely affected. Adverse changes in the economy may lead our customers to have less need for insurance coverage, to cancel existing insurance policies, to modify coverage or to not renew with the Company, all of which affect our ability to generate revenue.

Catastrophic losses, including those caused by natural disasters, such as earthquakes and hurricanes, or man-made events such as terrorist attacks, are inherently unpredictable and could cause the Company to suffer material financial losses.

We face the risk of property damage resulting from catastrophic events, particularly earthquakes on the West Coast and hurricanes and tropical storms affecting the continental U.S. or Hawaii. We also face risk from lava flows in Hawaii impacting

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our homeowners business and from wildfires, particularly on the West Coast. Since the Northridge, California earthquake in 1994, most of our catastrophe-related claims have resulted from hurricanes and other seasonal storms such as tornadoes and hail storms.

The incidence and severity of CATs are inherently unpredictable. The extent of losses from a CAT is a function of both the total amount of insured values in the area affected by the event and the severity of the event. Most CATs are restricted to fairly specific geographic areas. However, hurricanes and earthquakes may produce significant damage in large, heavily populated areas. In addition to hurricanes and earthquakes, CAT losses can be due to windstorms, severe winter weather and fires and may include terrorist events. In addition, climate change could have an impact on longer-term natural CAT trends. Extreme weather events that are linked to rising temperatures, changing global weather patterns, sea, land and air temperatures, as well as sea levels, rain and snow could result in increased occurrence and severity of CATs. CATs can cause losses in a variety of our property and casualty segments, and it is possible that a catastrophic event or multiple catastrophic events could cause the Company to suffer material financial losses. In addition, CAT claim costs may be higher than we originally estimate and could cause substantial volatility in our financial results for any fiscal quarter or year. Our ability to write new business could also be affected. We believe that increases in the value and geographic concentration of insured property, the effects of inflation and the growth of our workers’ compensation business could also increase the severity of claims from CAT events in the future.

For information on our approaches to catastrophe risk mitigation, including reinsurance and catastrophe modeling, see the Property Reinsurance – Catastrophe Coverage section within “Item 1. Business” and Note 1.S to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data. However, since our CAT models cannot contemplate all possible CAT scenarios and includes underlying assumptions based on a limited set of actual events, the losses we might incur from an actual catastrophe could be higher than our expectation of losses generated from modeled catastrophe scenarios and our results of operations and financial condition could be materially and adversely affected.

Our loss reserves are based on estimates and may be inadequate to cover our actual insured losses, which would negatively impact our profitability.

Significant periods of time often elapse between the occurrence of an insured loss, the reporting of the loss to the Company and the payment of that loss. To recognize liabilities for unpaid losses, we establish reserves as balance sheet liabilities representing estimates of amounts needed to pay reported and unreported losses and the related loss adjustment expenses. Loss reserves are estimates of the ultimate cost of claims and do not represent an exact calculation of liability. These estimates are based on historical information and on estimates of future trends that may affect the frequency and severity of claims that may be reported in the future. Estimating loss reserves is a difficult, complex and inherently uncertain process involving many variables and subjective judgments. As part of the reserving process, we review historical data and consider the impact of various factors such as:

· Loss emergence and cedant reporting patterns,

· Underlying policy terms and conditions,

· Business and exposure mix,

· Trends in claim frequency and severity,

· Changes in operations,

· Emerging economic and social trends,

· Inflation and

· Changes in the regulatory and litigation environments.

This process assumes that past experience, adjusted for the effects of current developments and anticipated trends, is an appropriate basis for predicting future events. It also assumes adequate historical or other data exists upon which to make these judgments. For more information on the estimates used in the establishment of loss reserves, see the loss and settlement expenses section of our critical accounting policies contained within Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations. However, there is no precise method for evaluating the impact of any specific factor on the adequacy of reserves and actual results are likely to differ from original estimates. If the actual amount of insured losses is greater than the amount we have reserved for these losses, our profitability could suffer.

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We may suffer losses from litigation, which could materially and adversely affect our financial condition and business operations.

As is typical in our industry, we continually face risks associated with litigation of various types, including general commercial and corporate litigation, and disputes relating to bad faith allegations that could result in the Company incurring losses in excess of policy limits. We are party to a variety of litigation matters throughout the year. Litigation is subject to inherent uncertainties, and if there were an outcome unfavorable to the Company, there exists the possibility of a material adverse impact on our results of operations and financial position in the period in which the outcome occurs. Even if an unfavorable outcome does not materialize, we still may face substantial expense and disruption associated with the litigation.

Our reinsurers may not pay on losses in a timely fashion, or at all, which may increase our costs.

We purchase reinsurance to transfer part of the risk we have assumed (known as ceding) to a reinsurance company in exchange for part of the premium we receive in connection with the risk. Although reinsurance makes the reinsurer liable to the Company to the extent the risk is transferred or ceded to the reinsurer, it does not relieve the Company (the reinsured) of its liability to its policyholders. Accordingly, we bear credit risk with respect to our reinsurers. That is, our reinsurers may not pay claims made by the Company on a timely basis, or they may not pay some or all of these claims for a variety of reasons. Either of these events would increase our costs and could have a materially adverse effect on our business.

If we cannot obtain adequate reinsurance protection for the risks we have underwritten, we may be exposed to greater losses from these risks or we may reduce the amount of business we underwrite, which will reduce our revenues.

Market conditions beyond our control determine the availability and cost of the reinsurance protection that we purchase. In addition, the historical results of reinsurance programs and the availability of capital also affect the availability of reinsurance. Our reinsurance agreements are generally subject to annual renewal. We cannot be sure that we can maintain our current reinsurance protection, obtain other reinsurance facilities in adequate amounts and at favorable rates or diversify our exposure among an adequate number of high quality reinsurance partners. If we are unable to renew our expiring facilities or to obtain new reinsurance facilities on terms we deem acceptable, either our net exposures would increase—which could increase the volatility of our results—or, if we were unwilling to bear an increase in net exposures, we would have to reduce the level of our underwriting commitments, which would reduce our revenues.

Our investment results and, therefore, our financial condition may be impacted by changes in the business, financial condition or operating results of the entities in which we invest, as well as changes in interest rates, government monetary policies, general economic conditions, liquidity and overall market conditions.

We invest the premiums we receive from customers until they are needed to pay expenses or policyholder claims. Funds remaining after paying expenses and claims remain invested and are included in retained earnings. The value of our investment portfolio can fluctuate as a result of changes in the business, financial condition or operating results of the entities in which we invest. In addition, fluctuations can result from changes in interest rates, credit risk, government monetary policies, liquidity of holdings and general economic conditions. The equity portfolio will fluctuate with movements in the overall stock market. While the equity portfolio has been constructed to have lower downside risk than the market, the portfolio is positively correlated with movements in domestic stocks. The bond portfolio is affected by interest rate changes and movement in credit spreads. We attempt to mitigate our interest rate and credit risks by constructing a well-diversified portfolio of high-quality securities with varied maturities. These fluctuations may negatively impact our financial condition. However, we attempt to manage this risk through asset allocation, duration and security selection.

We compete with a large number of companies in the insurance industry for underwriting revenues.

We compete with a large number of other companies in our selected lines of business. During periods of intense competition for premium (soft markets), we are vulnerable to the actions of other companies who may seek to write business without the appropriate regard for risk and profitability. During these times, it is very difficult to grow or maintain premium volume without sacrificing underwriting discipline and income.

We face competition from specialty insurance companies, underwriting agencies and intermediaries, as well as diversified financial services companies that are significantly larger than we are and that have significantly greater financial, marketing, management and other resources. We may also face competition from new sources of capital such as institutional investors seeking access to the insurance market, sometimes referred to as alternative capital, which may depress pricing or limit our opportunities to write business. Some of these competitors also have greater experience and market recognition than

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we do. We may incur increased costs in competing for underwriting revenues. If we are unable to compete effectively in the markets in which we operate or expand our operations into new markets, our underwriting revenues may decline, as well as overall business results.

A number of new, proposed or potential legislative or industry developments could further increase competition in our industry. These developments include:

· An increase in capital-raising by companies in our lines of business, which could result in new entrants to our markets and an excess of capital in the industry,

· The deregulation of commercial insurance lines in certain states and the possibility of federal regulatory reform of the insurance industry, which could increase competition from standard carriers for our excess and surplus lines of insurance business,

· Programs in which state-sponsored entities provide property insurance in CAT-prone areas or other “alternative markets” types of coverage,

· Changing practices, which may lead to greater competition in the insurance business and

· The emergence of insurtech companies and the development of new technologies, which may lead to disruption of current business models and the insurance value chain.

New competition from these developments could cause the supply and/or demand for insurance or reinsurance to change, which could affect our ability to price our coverages at attractive rates and thereby adversely affect our underwriting results.

A downgrade in our ratings from A.M. Best, Standard & Poor’s or Moody’s could negatively affect our business.

Financial strength ratings are a critical factor in establishing the competitive position of insurance companies. Our insurance companies are rated for overall financial strength by A.M. Best, Standard & Poor’s and Moody’s. A.M. Best, Standard & Poor’s and Moody’s ratings reflect their opinions of our financial strength, operating performance, strategic position and ability to meet our obligations to policyholders, and are not evaluations directed to investors. Our ratings are subject to periodic review by such firms, and the criteria used in the rating methodologies is subject to change; as such, we cannot assure the continued maintenance of our current ratings. All of our ratings were reviewed during 2018. A.M. Best reaffirmed its “A+, Superior” rating for the combined entity of RLI Ins., Mt. Hawley and CBIC (group-rated). Standard & Poor’s reaffirmed our “A+, Strong” rating for the group of RLI Ins. and Mt. Hawley. Moody’s reaffirmed our group rating of “A2, Good” for RLI Ins. and Mt. Hawley. Because these ratings have become an increasingly important factor in establishing the competitive position of insurance companies, if our ratings are reduced from their current levels by A.M. Best, Standard & Poor’s or Moody’s, our competitive position in the industry, and therefore our business, could be adversely affected. A significant downgrade could result in a substantial loss of business, as policyholders might move to other companies with higher claims-paying and financial strength ratings.

We are subject to extensive governmental regulation, which may adversely affect our ability to achieve our business objectives. Moreover, if we fail to comply with these regulations, we may be subject to penalties, including fines and suspensions, which may adversely affect our financial condition, results of operations and reputation.

Most insurance regulations are designed to protect the interests of policyholders rather than shareholders and other investors. These regulations, generally administered by a department of insurance in each state and territory in which we do business, relate to, among other things:

· Approval of policy forms and premium rates,

· Standards of solvency, including risk-based capital measurements,

· Licensing of insurers and their producers,

· Restrictions on agreements with our large revenue-producing agents,

· Cancellation and non-renewal of policies,

· Restrictions on the nature, quality and concentration of investments,

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· Restrictions on the ability of our insurance company subsidiaries to pay dividends to the Company,

· Restrictions on transactions between insurance company subsidiaries and their affiliates,

· Restrictions on the size of risks insurable under a single policy,

· Requiring deposits for the benefit of policyholders,

· Requiring certain methods of accounting,

· Periodic examinations of our operations and finances,

· Prescribing the form and content of records of financial condition required to be filed and

· Requiring reserves for unearned premium, losses and other purposes.

State insurance departments also conduct periodic examinations of the conduct and affairs of insurance companies and require the filing of annual, quarterly and other reports relating to financial condition, holding company issues and other matters. These regulatory requirements may adversely affect or inhibit our ability to achieve some or all of our business objectives.

In addition, regulatory authorities have relatively broad discretion to deny or revoke licenses for various reasons, including the violation of regulations. In some instances, we follow practices based on our interpretations of regulations or practices that we believe may be generally followed by the industry. These practices may turn out to be different from the interpretations of regulatory authorities. If we do not have the requisite licenses and approvals or do not comply with applicable regulatory requirements, insurance regulatory authorities could fine the Company, preclude or temporarily suspend the Company from carrying on some or all of its activities or otherwise penalize the Company. This could adversely affect our ability to operate our business. Further, changes in the level of regulation of the insurance industry or changes in laws or regulations themselves or interpretations by regulatory authorities could adversely affect our ability to operate our business as currently conducted.

In addition to regulations specific to the insurance industry, including the insurance laws of our principal state regulator (Illinois), as a public company we are also subject to the rules and regulations of the U.S. Securities and Exchange Commission and the New York Stock Exchange (NYSE), each of which regulate many areas such as financial and business disclosures, corporate governance and shareholder matters. We are also subject to the corporation laws of Delaware, where we are incorporated. At the federal level, among other laws, we are subject to the Sarbanes-Oxley Act and the Dodd-Frank Act, each of which regulate corporate governance, executive compensation and other areas, as well as laws relating to federal trade restrictions, privacy/data security and terrorism risk insurance laws. We monitor these laws, regulations and rules on an ongoing basis to ensure compliance and make appropriate changes as necessary. Implementing such changes may require adjustments to our business methods, increases to our costs and other changes that could cause the Company to be less competitive in the industry.

We may be unable to attract and retain qualified key employees.

We depend on our ability to attract and retain qualified executive officers, experienced underwriting talent and other skilled employees who are knowledgeable about our business. Providing suitable succession planning for such positions is also important. If we cannot attract or retain top-performing executive officers, underwriters and other employees, if the quality of their performance decreases or if we fail to implement succession plans for our key staff, we may be unable to maintain our current competitive position in the markets in which we operate or expand our operations into new markets.

We are an insurance holding company and therefore may not be able to receive adequate or timely dividends from our insurance subsidiaries.

RLI Corp. is the holding company for our three insurance operating companies. At the holding company level, our principal assets are the shares of capital stock of our insurance company subsidiaries. We rely largely on dividends from our insurance company subsidiaries to meet our obligations for paying principal and interest on outstanding debt, corporate expenses and dividends to RLI Corp. shareholders. Dividend payments to RLI Corp. from our principal insurance subsidiary are restricted by state insurance laws as to the amount that may be paid without prior approval of the insurance regulatory authorities of Illinois. As a result, we may not be able to receive dividends from such subsidiary at times and in amounts necessary to pay RLI Corp. obligations and desired dividends to shareholders. Ordinary dividends, which may be paid by our principal insurance subsidiary without prior regulatory approval, are subject to certain limitations based upon income, surplus

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and earned surplus. The maximum ordinary dividend distribution from our principal insurance subsidiary in a rolling 12-month period is limited by Illinois law to the greater of 10 percent of RLI Ins. policyholder surplus as of December 31 of the preceding year, or the net income of RLI Ins. for the 12-month period ending December 31 of the preceding year. Ordinary dividends are further restricted by the requirement that they be paid from earned surplus. Any dividend distribution in excess of the ordinary dividend limits is deemed extraordinary and requires prior approval (or non-disapproval) from the IDOI. Because the limitations are based upon a rolling 12-month period, the presence, amount and impact of these restrictions vary over time.

Anti-takeover provisions affecting the Company could prevent or delay a change of control that is beneficial to you.

Provisions of our certificate of incorporation and by-laws, as well as applicable Delaware law, federal and state regulations and insurance company regulations may discourage, delay or prevent a merger, tender offer or other change of control that holders of our securities may consider favorable. Some of these provisions impose various procedural and other requirements that could make it more difficult for shareholders to effect certain corporate actions. These provisions could:

· Have the effect of delaying, deferring or preventing a change in control of the Company,

· Discourage bids for our securities at a premium over the market price,

· Adversely affect the market price, the voting and other rights of the holders of our securities or

· Impede the ability of the holders of our securities to change our management.

In particular, we are subject to Section 203 of the Delaware General Corporation Law which, under certain circumstances, restricts our ability to engage in a business combination, such as a merger or sale of assets, with any stockholder that, together with affiliates, owns 15 percent or more of our common stock, which similarly could prohibit or delay the accomplishment of a change of control transaction.

Any significant interruption in the operation of our facilities, systems and business functions could adversely affect our financial condition and results of operations.

We rely on multiple computer systems to interact with producers and customers, issue policies, pay claims, run modeling functions, assess insurance risks and complete various important internal processes including accounting and bookkeeping. Our business is highly dependent on our ability to access these systems to perform necessary business functions. Additionally, some of these systems may include or rely upon third-party systems not located on our premises. Any of these systems may be exposed to unplanned interruption, unreliability or intrusion from a variety of causes, including among others, storms and other natural disasters, terrorist attacks, utility outages or complications encountered as existing systems are replaced or upgraded.

Any such issues could materially impact our company including the impairment of information availability, compromise of system integrity/accuracy, misappropriation of confidential information, reduction of our volume of transactions and interruption of our general business. Although we believe our computer systems are securely protected and continue to take steps to ensure they are protected against such risks, we cannot guarantee such problems will not occur. If they do, interruption to our business and damage to our reputation, and related costs, could be significant, which could impair our profitability.

Technology breaches or failures, including but not limited to cyber security incidents, could disrupt our operations and result in the loss of critical and confidential information, which could adversely impact our reputation and results of operations.

Global cyber security threats can range from uncoordinated individual attempts to gain unauthorized access to our information technology systems and those of our business partners or service providers to sophisticated and targeted measures known as advanced persistent threats. While we, our business partners and service providers employ measures to prevent, detect, address and mitigate these threats (including access controls, data encryption, vulnerability assessments, continuous monitoring of information technology networks and systems and maintenance of backup and protective systems), cyber security incidents, depending on their nature and scope, could potentially result in the misappropriation, destruction, corruption or unavailability of critical data and confidential or proprietary information (our own or that of third parties) and the disruption of business operations. Security breaches could expose the Company to a risk of loss or misuse of our or our customers’ information, litigation and potential liability. In addition, cyber incidents that impact the availability, reliability, speed, accuracy or other proper functioning of our technology systems could impact our operations. We may not have the resources or technical sophistication to anticipate or prevent every type of cyber attack. A significant cyber incident, including system failure, security breach, disruption by malware or other damage could interrupt or delay our operations, result in a violation of

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applicable privacy and other laws, damage our reputation, cause a loss of customers or give rise to remediation costs, monetary fines and other penalties, which could be significant. It is possible that insurance coverage we have in place would not entirely protect the Company in the event that we experienced a cyber security incident, interruption or widespread failure of our information technology systems.

We rely on third party vendors for a number of key components of our business.

We contract with a number of third party vendors to support our business. For example, we have license agreements for services that include natural catastrophe modeling, policy management, claims processing, producer management and accounting and financial management. The vendors range from large national companies, who are dominant in their area of expertise and would be difficult to quickly replace, to smaller or start-up vendors with leading technology, but with shorter operating histories and fewer financial resources. Failures of certain vendors to provide services could adversely affect our ability to deliver products and services to our customers, disrupting our business and causing the Company to incur significant expense. If one or more of our vendors fail to protect personal information of our customers, claimants or employees, we may incur operational impairments, or could be exposed to litigation, compliance costs or reputation damage. We maintain a vendor management program to establish procurement policies and to monitor vendor risk, including the financial stability of our critical vendors.

If we are unable to keep pace with the technological advancements in the insurance industry, our ability to compete effectively could be impaired.

Our operations rely upon complex and expensive information technology systems for interacting with policyholders, brokers and other business partners. The pace at which information systems must be upgraded is continually increasing, requiring an ongoing commitment of significant resources to maintain or upgrade to current standards. We are committed to developing and maintaining information technology systems that will allow our insurance subsidiaries to compete effectively. There can be no assurance that the development of current technology will not result in our being competitively disadvantaged, especially with those companies that have greater resources. If we are unable to keep pace with the advancements being made in technology, our ability to compete with other insurance companies who have advanced technological capabilities will be negatively affected. Further, if we are unable to effectively update or replace our key legacy technology systems as they become obsolete or as emerging technology renders them competitively inefficient, our competitive position and our cost structure could be adversely affected.

We may not be able to effectively start up or integrate new product opportunities.

Our ability to grow our business depends, in part, on our creation, implementation or acquisition of new insurance products that are profitable and fit within our business model. Our ability to grow profitably requires that we identify market opportunities, which may include acquisitions, and that we attract and retain underwriting and claims expertise to support that growth. New product launches as well as resources to integrate business acquisitions are subject to many obstacles, including ensuring we have sufficient business and systems processes, determining appropriate pricing, obtaining reinsurance, assessing opportunity costs and regulatory burdens and planning for internal infrastructure needs. If we cannot effectively or accurately assess and overcome these obstacles or we improperly implement new insurance products, our ability to grow profitably could be impaired.

Access to capital and market liquidity may adversely affect our ability to take advantage of business opportunities as they arise.

Our ability to grow our business depends in part on our ability to access capital when needed. We cannot predict capital market liquidity or the availability of capital. We also cannot predict the extent and duration of future economic and market disruptions, the impact of government interventions into the market to address these disruptions and their combined impact on our industry, business and investment portfolios. If our company needs capital but cannot raise it, our business and future growth could be adversely affected.

Our success will depend on our ability to maintain and enhance effective operating procedures and manage risks on an enterprise wide basis.

Operational risk and losses can result from, among other things, fraud, errors, failure to document transactions properly, failure to obtain proper internal authorization, failure to comply with regulatory requirements, information technology failures or external events. We continue to enhance our operating procedures and internal controls to effectively support our business

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and our regulatory and reporting requirements. The NAIC and state legislatures have increased their focus on risks within an insurer’s holding company system that may pose enterprise risk to insurers. The Illinois legislature has adopted the Risk Management and ORSA Law, which requires domestic insurers to maintain a risk management framework and establishes a legal requirement for domestic insurers to conduct an ORSA in accordance with the NAIC’s ORSA Guidance Manual. The ORSA Law also provides that, no less than annually, an insurer must submit an ORSA summary report. Under the Illinois insurance holding company laws, on an annual basis, we are also required to file with the IDOI an enterprise risk report, which is intended to identify the material risks within our insurance holding company system that could pose enterprise risk to our insurance company subsidiaries. We operate within an ERM framework designed to assess and monitor our risks. However, assurance that we can effectively review and monitor all risks or that all of our employees will operate within the ERM framework cannot be guaranteed. Assurances that our ERM framework will result in the Company accurately identifying all risks and accurately limiting our exposures based on our assessments also cannot be guaranteed.

We may not be able to, or might not choose to, continue paying dividends on our common stock.

We have a history of paying regular, quarterly dividends and in recent years have paid special dividends. Any determination to pay either type of dividend to our stockholders in the future will be at the discretion of our board of directors and will depend on our results of operations, financial condition and other factors deemed relevant by our board of directors. Our ability to pay dividends depends largely on our subsidiaries’ earnings and operating capital requirements and is subject to the regulatory, contractual and other constraints of our subsidiaries, including the effect of any such dividends or distributions on the A.M. Best rating or other ratings of our insurance subsidiaries. In addition, we may choose to retain capital to support growth or further mitigate risk, as opposed to returning excess capital to our shareholders.

Item 1B.Unresolved Staff Comments

None.

Item 2.Properties

We own five commercial buildings totaling 173,000 square feet on our 23-acre campus that serves as our corporate headquarters in Peoria, Illinois. All of our branch offices and other company operations lease office space throughout the country. Management considers our office facilities suitable and adequate for our current levels of operations.

Item 3.  Legal Proceedings

We are party to numerous claims, losses and litigation matters that arise in the normal course of our business. Many of such claims, losses or litigation matters involve claims under policies that we underwrite as an insurer. We believe that the resolution of these claims, losses and litigation matters will not have a material adverse effect on our financial condition, results of operations or cash flows.

We are also involved in various other legal proceedings and litigation unrelated to our insurance business from time to time that arise in the ordinary course of business operations. Management believes that any liabilities that may arise as a result of these legal matters will not have a material adverse effect on our financial condition, results of operations or cash flows.

Item 4.Mine Safety Disclosures

Not applicable.

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PART II

Item 5.Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Market Information; Holders; Dividends

	Closing Stock Price						Dividends
2018	High		Low		Ending		Declared
1st Quarter	$	64.47	$	58.71	$	63.39	$	0.21
2nd Quarter		69.71		61.74		66.19		0.22
3rd Quarter		79.86		66.53		78.58		0.22
4th Quarter		76.82		64.57		68.99		1.22

	Closing Stock Price						Dividends
2017	High		Low		Ending		Declared
1st Quarter	$	61.61	$	57.15	$	60.02	$	0.20
2nd Quarter		58.67		53.01		54.62		0.21
3rd Quarter		58.68		51.02		57.36		0.21
4th Quarter		60.93		56.99		60.66		1.96

RLI Corp. common stock trades on the New York Stock Exchange under the symbol RLI. RLI Corp. has paid dividends for 170 consecutive quarters and increased quarterly dividends in each of the last 43 years. In December 2018 and 2017, RLI Corp. paid special cash dividends of $1.00 and $1.75 per share, respectively, to shareholders. As of February 7, 2019, there were 765 registered holders of the Company’s common stock.

Performance

The following graph provides a five-year comparison of RLI’s total return to shareholders compared to that of the S&P 500 and S&P 500 P&C Index:

		2013		2014	2015	2016	2017	2018
RLI	--------------	$	100	110	144	154	154	180
S&P 500	••••••••••••••••	$	100	114	115	129	157	150
S&P 500 P&C Index	—  —  —	$	100	116	127	147	180	171

Assumes $100 invested on December 31, 2013, in RLI, S&P 500 and S&P 500 P&C Index, with reinvestment of dividends. Comparison of five-year annualized total return — RLI: 12.4%, S&P 500: 8.5%, and S&P 500 P&C Index: 11.3%.

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Securities Authorized for Issuance under Equity Compensation Plans

Refer to Part III, Item 12, “Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters,” of this document for information on securities authorized for issuance under our equity compensation plan.

Recent Sales of Unregistered Securities; Uses of Proceeds from Registered Securities

Not applicable.

Equity Repurchases

In 2010, our Board of Directors implemented a $100 million share repurchase program. We last repurchased shares in 2011. We have $87.5 million of remaining capacity from the repurchase program. The repurchase program may be suspended or discontinued at any time without prior notice.

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Item 6.Selected Financial Data

The following is selected financial data of RLI Corp. and Subsidiaries for the five years ended December 31, 2018:

(amounts in thousands, except per share data and ratios)	2018			2017		2016		2015		2014
OPERATING RESULTS
Gross premiums written	$	983,216		885,312		874,864		853,586		863,848
Consolidated revenue (1)	$	818,123		797,224		816,328		794,634		775,165
Net earnings (1)	$	64,179		105,028		114,920		137,544		135,445
Comprehensive earnings	$	30,182		140,337		113,756		89,935		170,801
Net cash provided from operating activities	$	217,102		197,525		174,463		152,586		123,085
FINANCIAL CONDITION
Total investments and cash	$	2,194,230		2,140,790		2,021,827		1,951,543		1,964,285
Total assets	$	3,105,065		2,947,244		2,777,633		2,735,465		2,774,284
Unpaid losses and settlement expenses	$	1,461,348		1,271,503		1,139,337		1,103,785		1,121,040
Total debt	$	149,115		148,928		148,741		148,554		148,367
Total shareholders’ equity	$	806,842		853,598		823,572		823,469		845,062
Statutory surplus (2)	$	829,775		864,554		859,976		865,268		849,297
SHARE INFORMATION
Net earnings per share (1):
Basic	$	1.45		2.39		2.63		3.18		3.15
Diluted	$	1.43		2.36		2.59		3.12		3.09
Comprehensive earnings per share:
Basic	$	0.68		3.19		2.60		2.08		3.97
Diluted	$	0.67		3.15		2.56		2.04		3.90
Cash dividends declared per share:
Regular	$	0.87		0.83		0.79		0.75		0.71
Special	$	1.00		1.75		2.00		2.00		3.00
Book value per share	$	18.13		19.33		18.74		18.91		19.61
Closing stock price	$	68.99		60.66		63.13		61.75		49.40
Weighted average shares outstanding:
Basic		44,358		44,033		43,772		43,299		43,020
Diluted		44,835		44,500		44,432		44,131		43,819
Common shares outstanding		44,504		44,148		43,945		43,544		43,103
OTHER NON-GAAP FINANCIAL INFORMATION
Net premiums written to statutory surplus (2)		99	%	87	%	86	%	83	%	83	%
GAAP combined ratio (3)		94.7		96.4		89.5		84.5		84.5
Statutory combined ratio (2)(3)		94.0		96.2		89.0		83.9		84.1

(1) Unrealized gains and losses on equity securities were included in consolidated revenue and net earnings in 2018 and flowed through comprehensive earnings in prior years.

(2) Ratios and surplus information are presented on a statutory basis. As discussed in Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations, statutory accounting principles differ from GAAP and are generally based on a solvency concept. Further discussion is included in note 9 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data. Reporting of statutory surplus is a required disclosure under GAAP.

(3) See page 35 for information regarding non-GAAP financial measures.

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Item 7.Management’s Discussion and Analysis of Financial Condition and Results of Operations

OVERVIEW

RLI Corp. is a U.S.-based, specialty insurance company that underwrites select property and casualty insurance through major subsidiaries collectively known as RLI Insurance Group. As a specialty insurance company with a niche focus, we offer insurance coverages in the specialty admitted and excess and surplus markets. Coverages in the specialty admitted market, such as our energy surety bonds, are for risks that are unique or hard-to-place in the standard market, but must remain with an admitted insurance company for regulatory or marketing reasons. In addition, our coverages in the specialty admitted market may be designed to meet specific insurance needs of targeted insured groups, such as our professional liability and package coverages for design professionals and our stand-alone personal umbrella policy. The specialty admitted market is subject to more state regulation than the excess and surplus market, particularly with regard to rate and form filing requirements, restrictions on the ability to exit lines of business, premium tax payments and membership in various state associations, such as state guaranty funds and assigned risk plans. We also underwrite coverages in the excess and surplus market. The excess and surplus market, unlike the admitted market, is less regulated and more flexible in terms of policy forms and premium rates. This market provides an alternative for customers with risks or loss exposures that generally cannot be written in the standard market. This typically results in coverages that are more restrictive and more expensive than coverages in the admitted market. When we underwrite within the excess and surplus market, we are selective in the lines of business and type of risks we choose to write. Using our non-admitted status in this market allows the Company to tailor terms and conditions to manage these exposures effectively. Often, the development of these coverages is generated through proposals brought to the Company by an agent or broker seeking coverage for a specific group of clients or loss exposures. Once a proposal is submitted, our underwriters determine whether it would be a viable product based on our business objectives.

We focus on niche markets and developing unique products that are tailored to customers’ needs. We hire underwriters with deep expertise and provide exceptional customer service and support. We maintain a highly diverse product portfolio and underwrite for profit in all market conditions. In 2018, we achieved our 23rd consecutive year of profitability, averaging an 88.1 combined ratio over that period. This drives our ability to provide shareholder returns in three different ways: the underwriting income itself, net investment income from our investment portfolio and long-term appreciation in our equity portfolio. Our investment strategy is based on preservation of capital as the first priority, with a secondary focus on generating total return. The fixed income portfolio consists primarily of highly-rated, diversified, liquid, investment-grade securities. Consistent underwriting income allows a portion of our investment portfolio to be invested in equity securities and other risk asset classes. Our equity portfolio consists of a core stock portfolio weighted toward dividend-paying stocks, as well as exchange traded funds (ETFs). Our minority equity ownership interests in Maui Jim, Inc. (Maui Jim), a manufacturer of high-quality sunglasses, and Prime Holdings Insurance Services, Inc. (Prime), a specialty insurance company, have also enhanced financial results. We have a diversified investment portfolio and closely monitor our investment risks. Despite periodic fluctuations in market value, our equity portfolio is part of a long-term asset allocation strategy and has contributed significantly to our historic growth in book value.

We measure the results of our insurance operations by monitoring growth and profitability across three distinct business segments: casualty, property and surety. Growth is measured in terms of gross premiums written, and profitability is analyzed through combined ratios, which are further subdivided into their respective loss and expense components.

The casualty portion of our business consists largely of commercial excess, personal umbrella, general liability, transportation and executive products coverages, as well as package business and other specialty coverages, such as professional liability and workers’ compensation for office-based professionals. We also offer fidelity and crime coverage for commercial insureds and select financial institutions and medical and healthcare professional liability coverage. The casualty business is subject to the risk of estimating losses and related loss reserves because the ultimate settlement of a casualty claim may take several years to fully develop. The casualty segment is also subject to inflation risk and may be affected by evolving legislation and court decisions that define the extent of coverage and the amount of compensation due for injuries or losses.

Our property segment is comprised primarily of commercial fire, earthquake, difference in conditions and marine coverages. We also offer select personal lines policies, including homeowners’ coverages. Our property reinsurance and recreational vehicle (RV) products are in runoff after we began curtailing offerings at the end of 2015 and 2016, respectively. Property insurance results are subject to the variability introduced by perils such as earthquakes, fires and hurricanes. Our major catastrophe exposure is to losses caused by earthquakes, primarily on the West Coast. Our second largest catastrophe exposure is to losses caused by wind storms to commercial properties throughout the Gulf and East Coast, as well as to homes we insure in Hawaii. We limit our net aggregate exposure to a catastrophic event by minimizing the total policy limits written in a particular region, purchasing reinsurance and maintaining policy terms and conditions throughout market cycles. We also

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use computer-assisted modeling techniques to provide estimates that help the Company carefully manage the concentration of risks exposed to catastrophic events.

The surety segment specializes in writing small to large-sized commercial and contract surety coverages, as well as those for the energy, petrochemical and refining industries. We also offer miscellaneous bonds including license and permit, notary and court bonds. Often, our surety coverages involve a statutory requirement for bonds. While these bonds typically maintain a relatively low loss ratio, losses may fluctuate due to adverse economic conditions affecting the financial viability of our principals. The contract surety product guarantees the construction work of a commercial contractor for a specific project. Generally, losses occur due to the deterioration of a contractor’s financial condition. This line has historically produced marginally higher loss ratios than other surety lines during economic downturns.

GAAP, NON-GAAP AND PERFORMANCE MEASURES

Throughout this annual report, we include certain non-generally accepted accounting principles (“non-GAAP”) financial measures. Management believes that these non-GAAP measures better explain the Company’s results of operations and allow for a more complete understanding of the underlying trends in the Company’s business. These measures should not be viewed as a substitute for those determined in accordance with generally accepted accounting principles in the United States of America (GAAP). In addition, our definitions of these items may not be comparable to the definitions used by other companies.

Following is a list of non-GAAP measures found throughout this report with their definitions, relationships to GAAP measures and explanations of their importance to our operations.

Underwriting Income

Underwriting income or profit represents one measure of the pretax profitability of our insurance operations and is derived by subtracting losses and settlement expenses, policy acquisition costs and insurance operating expenses from net premiums earned, which are all GAAP financial measures. Each of these captions is presented in the statements of earnings but is not subtotaled. However, this information is available in total and by segment in note 11 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data. The nearest comparable GAAP measure is earnings before income taxes which, in addition to underwriting income, includes net investment income, net realized gains or losses, net unrealized gains or losses on equity securities in 2018, general corporate expenses, debt costs and our portion of earnings from unconsolidated investees.

Combined Ratio

The combined ratio, which is derived from components of underwriting income, is a common industry performance measure of profitability for underwriting operations and is calculated in two components. First, the loss ratio is losses and settlement expenses divided by net premiums earned. The second component, the expense ratio, reflects the sum of policy acquisition costs and insurance operating expenses divided by net premiums earned. All items included in these components of the combined ratio are presented in our GAAP consolidated financial statements. The sum of the loss and expense ratios is the combined ratio. The difference between the combined ratio and 100 reflects the per-dollar rate of underwriting income or loss. For example, a combined ratio of 90 implies that for every $100 of premium we earn, we record $10 of underwriting income.

Net Unpaid Loss and Settlement Expenses

Unpaid losses and settlement expenses, as shown in the liabilities section of our balance sheets, represents the total obligations to claimants for both estimates of known claims and estimates for incurred but not reported (IBNR) claims. The related asset item, reinsurance balances recoverable on unpaid losses and settlement expense, is the estimate of known claims and estimates of IBNR that we expect to recover from reinsurers. The net of these two items is generally referred to as net unpaid loss and settlement expenses and is commonly used in our disclosures regarding the process of establishing these various estimated amounts.

CRITICAL ACCOUNTING POLICIES

In preparing the consolidated financial statements, we are required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosures of contingent assets and liabilities as of the date of the

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consolidated financial statements and the reported amounts of revenues and expenses for the reporting period. Actual results could differ significantly from those estimates.

The most critical accounting policies involve significant estimates and include those used in determining the liability for unpaid losses and settlement expenses, investment valuation and other-than-temporary impairment (OTTI), recoverability of reinsurance balances, deferred policy acquisition costs and deferred taxes.

LOSSES AND SETTLEMENT EXPENSES

Overview

Loss and loss adjustment expense (LAE) reserves represent our best estimate of ultimate payments for losses and related settlement expenses from claims that have been reported but not paid and those losses that have occurred but have not yet been reported to the Company. Loss reserves do not represent an exact calculation of liability, but instead represent our estimates, generally utilizing individual claim estimates, actuarial expertise and estimation techniques at a given accounting date. The loss reserve estimates are expectations of what ultimate settlement and administration of claims will cost upon final resolution. These estimates are based on facts and circumstances then known to the Company, review of historical settlement patterns, estimates of trends in claims frequency and severity, projections of loss costs, expected interpretations of legal theories of liability and many other factors. In establishing reserves, we also take into account estimated recoveries from reinsurance, salvage and subrogation. The reserves are reviewed regularly by a team of actuaries we employ.

The process of estimating loss reserves involves a high degree of judgment and is subject to a number of variables. These variables can be affected by both internal and external events, such as changes in claims handling procedures, claim personnel, economic inflation, legal trends and legislative changes, among others. The impact of many of these items on ultimate costs for loss and LAE is difficult to estimate. Loss reserve estimations also differ significantly by coverage due to differences in claim complexity, the volume of claims, the policy limits written, the terms and conditions of the underlying policies, the potential severity of individual claims, the determination of occurrence date for a claim and reporting lags (the time between the occurrence of the policyholder event and when it is actually reported to the insurer). Informed judgment is applied throughout the process. We continually refine our loss reserve estimates as historical loss experience develops and additional claims are reported and settled. We rigorously attempt to consider all significant facts and circumstances known at the time loss reserves are established.

Due to inherent uncertainty underlying loss reserve estimates, including, but not limited to, the future settlement environment, final resolution of the estimated liability may be different from that anticipated at the reporting date. Therefore, actual paid losses in the future may yield a significantly different amount than currently reserved — favorable or unfavorable.

The amount by which estimated losses differ from those originally reported for a period is known as “development.” Development is unfavorable when the losses ultimately settle for more than the levels at which they were reserved or subsequent estimates indicate a basis for reserve increases on unresolved claims. Development is favorable when losses ultimately settle for less than the amount reserved or subsequent estimates indicate a basis for reducing loss reserves on unresolved claims. We reflect favorable or unfavorable developments of loss reserves in the results of operations in the period the estimates are changed.

We record two categories of loss and LAE reserves: case-specific reserves and IBNR reserves.

Within a reasonable period of time after a claim is reported, our claim department completes an initial investigation and establishes a case reserve. This case-specific reserve is an estimate of the ultimate amount we will have to pay for the claim, including related legal expenses and other costs associated with resolving and settling it. The estimate reflects all of the current information available regarding the claim, the informed judgment of our professional claim personnel regarding the nature and value of the specific type of claim and our reserving practices. During the life cycle of a particular claim, as more information becomes available, we may revise the estimate of the ultimate value of the claim either upward or downward. We may determine that it is appropriate to pay portions of the reserve to the claimant or related settlement expenses before final resolution of the claim. The amount of the individual claim reserve will be adjusted accordingly and is based on the most recent information available.

We establish IBNR reserves to estimate the amount we will have to pay for claims that have occurred, but have not yet been reported to the Company, claims that have been reported to the Company that may ultimately be paid out differently than reflected in our case-specific reserves and claims that have been closed but may reopen and require future payment.

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Our IBNR reserving process involves three steps: (1) an initial IBNR generation process that is prospective in nature,  (2) a loss and LAE reserve estimation process that occurs retrospectively and (3) a subsequent discussion and reconciliation between our prospective and retrospective IBNR estimates, which includes changes in our provisions for IBNR where deemed appropriate. These three processes are discussed in more detail in the following sections.

LAE represents the cost involved in adjusting and administering losses from policies we issued. The LAE reserves are frequently separated into two components: allocated and unallocated. Allocated loss adjustment expense (ALAE) reserves represent an estimate of claims settlement expenses that can be identified with a specific claim or case. Examples of ALAE would be the hiring of an outside adjuster to investigate a claim or an outside attorney to defend our insured. The claim adjuster typically estimates this cost separately from the loss component in the case reserve. Unallocated loss adjustment expense (ULAE) reserves represent an estimate of claims settlement expenses that cannot be identified with a specific claim. An example of ULAE would be the cost of an internal claim examiner to manage or investigate claims.

Our best estimate of ultimate loss and LAE reserves are proposed by our lead reserving actuary and approved by our Loss Reserve Committee (LRC). The LRC is made up of various members of the management team including the lead reserving actuary, chief executive officer, chief operating officer, chief financial officer, general counsel and other selected executives. We do not use discounting (recognition of the time value of money) in reporting our estimated reserves for losses and settlement expenses. Based on current assumptions used in calculating reserves, we believe that our reserve levels at December 31, 2018, make a reasonable provision to meet our future obligations.

Initial IBNR Generation Process

Initial carried IBNR reserves are determined through a reserve generation process. The intent of this process is to establish an initial total reserve that will provide a reasonable provision for the ultimate value of all unpaid loss and ALAE liabilities. For most casualty and surety products, this process involves the use of an initial loss and ALAE ratio that is applied to the earned premium for a given period. The result is our best initial estimate of the expected amount of ultimate loss and ALAE for the period by product. Payments and case reserves are subtracted from this initial estimate of ultimate loss and ALAE to determine a carried IBNR reserve.

For most property products, we use an alternative method of determining an appropriate provision for initial IBNR. Since this segment is characterized by a shorter period of time between claim occurrence and claim settlement, the IBNR reserves are determined by IBNR percentages applied to premium earned. The percentages are determined based on expected loss ratios and loss development assumptions. The loss development assumptions are typically based on historical reporting patterns but could consider alternative sources of information. The IBNR percentages are reviewed and updated periodically. No deductions for paid or case reserves are made. This alternative method of determining initial IBNR allows incurred losses and ALAE to react more rapidly to the actual emergence and is more appropriate for our property products where final claim resolution occurs over a shorter period of time.

We do not reserve for natural or man-made catastrophes until an event has occurred. Shortly after such occurrence, we review insured locations exposed to the event and industry loss estimates of the event. We also consider our knowledge of frequency and severity from early claim reports to determine an appropriate reserve for the catastrophe. These reserves are reviewed frequently to consider actual losses reported and appropriate changes to our estimates are made to reflect the new information.

The initial loss and ALAE ratios that are applied to earned premium are reviewed at least semi-annually. Prospective estimates are made based on historical loss experience adjusted for exposure mix, price change and loss cost trends. The initial loss and ALAE ratios also reflect our judgment as to estimation risk. We consider estimation risk by product and coverage within product, if applicable. A product with greater volatility and uncertainty has greater estimation risk. Products or coverages with higher estimation risk include, but are not limited to, the following characteristics:

· Significant changes in underlying policy terms and conditions,

· A new business or one experiencing significant growth and/or high turnover,

· Small volume or lacking internal data requiring significant utilization of external data,

· Unique reinsurance features including those with aggregate stop-loss, reinstatement clauses, commutation provisions or clash protection,

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· Longer emergence patterns with exposures to latent unforeseen mass tort,

· Assumed reinsurance businesses where there is an extended reporting lag and/or a heavier utilization of ceding company data and claims and product expertise,

· High severity and/or low frequency,

· Operational processes undergoing significant change and/or

· High sensitivity to significant swings in loss trends, economic change or judicial change.

The historical and prospective loss and ALAE estimates, along with the risks listed, are the basis for determining our initial and subsequent carried reserves. Adjustments in the initial loss ratio by product and segment are made where necessary and reflect updated assumptions regarding loss experience, loss trends, price changes and prevailing risk factors. The LRC approves all final decisions regarding changes in the initial loss and ALAE ratios.

Loss and LAE Reserve Estimation Process

Estimates of the expected value of the unpaid loss and LAE are derived using standard actuarial methodologies on a quarterly basis. In addition, an emergence analysis is completed quarterly to determine if further adjustments are necessary. These estimates are then compared to the carried loss reserves to determine the appropriateness of the current reserve balance.

The process of estimating ultimate payment for claims and claim expenses begins with the collection and analysis of current and historical claim data. Data on individual reported claims, including paid amounts and individual claim adjuster estimates, are grouped by common characteristics. There is judgment involved in this grouping. Considerations when grouping data include the volume of the data available, the credibility of the data available, the homogeneity of the risks in each cohort and both settlement and payment pattern consistency. We use this data to determine historical claim reporting and payment patterns, which are used in the analysis of ultimate claim liabilities. In some analyses, including business without sufficiently large numbers of policies or that have not accumulated sufficient historical statistics, our own data is supplemented with external or industry average data as available and when appropriate. For our newer products such as medical professional liability and workers’ compensation, as well as for executive products, we utilize external data extensively.

In addition to the review of historical claim reporting and payment patterns, we also incorporate estimated losses relative to premium (loss ratios) by year into the analysis. The expected loss ratios are based on a review of historical loss performance, trends in frequency and severity and price level changes. The estimates are subject to judgment including consideration given to available internal and industry data, growth and policy turnover, changes in policy limits, changes in underlying policy provisions, changes in legal and regulatory interpretations of policy provisions and changes in reinsurance structure. For the most current year, these are equivalent with the ratios used in the initial IBNR generation process. Increased recognition is given to actual emergence as the years age.

We use historical development patterns, expected loss ratios and standard actuarial methods to derive an estimate of the ultimate level of loss and LAE payments necessary to settle all the claims occurring as of the end of the evaluation period.

Our reserve processes include multiple standard actuarial methods for determining estimates of IBNR reserves. Other supplementary methodologies are incorporated as necessary. Mass tort and latent liabilities are examples of exposures for which supplementary methodologies are used. Each method produces an estimate of ultimate loss by accident year. We review all of these various estimates and assign weights to each based on the characteristics of the product being reviewed.

Our estimates of ultimate loss and LAE reserves are subject to change as additional data emerges. This could occur as a result of change in loss development patterns, a revision in expected loss ratios, the emergence of exceptional loss activity, a change in weightings between actuarial methods, the addition of new actuarial methodologies, new information that merits inclusion or the emergence of internal variables or external factors that would alter our view.

There is uncertainty in the estimates of ultimate losses. Significant risk factors to the reserve estimate include, but are not limited to, unforeseen or unquantifiable changes in:

· Loss payment patterns,

· Loss reporting patterns,

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· Frequency and severity trends,

· Underlying policy terms and conditions,

· Business or exposure mix,

· Operational or internal processes affecting the timing of loss and LAE transactions,

· Regulatory and legal environment and/or

· Economic environment.

Our actuaries engage in discussions with senior management, underwriting and the claim department on a regular basis to ascertain any substantial changes in operations or other assumptions that are necessary to consider in the reserving analysis.

A considerable degree of judgment in the evaluation of all these factors is involved in the analysis of reserves. The human element in the application of judgment is unavoidable when faced with uncertainty. Different experts will choose different assumptions based on their individual backgrounds, professional experiences and areas of focus. Hence, the estimates selected by various qualified experts may differ significantly from each other. We consider this uncertainty by examining our historic reserve accuracy and through an internal peer review process.

Given the substantial impact of the reserve estimates on our financial statements, we subject the reserving process to significant diagnostic testing and reasonability checks. In addition, there are data validity checks and balances in our front-end processes. Data anomalies are researched and explained to reach a comfort level with the data and results. Leading indicators such as actual versus expected emergence and other diagnostics are also incorporated into the reserving processes.

Determination of Our Best Estimate

Upon completion of our loss and LAE estimation analysis, the results are discussed with the LRC. As part of this discussion, the analysis supporting the actuarial central estimate of the IBNR reserve by product is reviewed. The actuaries also present explanations supporting any changes to the underlying assumptions used to calculate the indicated central estimate. A review of the resulting variance between the indicated reserves and the carried reserves takes place. Our actuaries make a recommendation to management in regards to booked reserves that reflect their analytical assessment and view of estimation risk. After discussion of these analyses and all relevant risk factors, the LRC determines whether the reserve balances require adjustment. Resulting reserve balances have always fallen within our actuaries’ reasonable range of estimates.

As a predominantly excess and surplus lines and specialty admitted insurer serving niche markets, we believe there are several reasons to carry, on an overall basis, reserves above the actuarial central estimate. We believe we are subject to above-average variation in estimates and that this variation is not symmetrical around the actuarial central estimate.

One reason for the variation is the above-average policyholder turnover and changes in the underlying mix of exposures typical of an excess and surplus lines business. This constant change can cause estimates based on prior experience to be less reliable than estimates for more stable, admitted books of business. Also, as a niche market insurer, there is little industry-level information for direct comparisons of current and prior experience and other reserving parameters. These unknowns create greater-than-average variation in the actuarial central estimates.

Actuarial methods attempt to quantify future outcomes. However, insurance companies are subject to unique exposures that are difficult to foresee at the point coverage is initiated and, often, many years subsequent. Judicial and regulatory bodies involved in interpretation of insurance contracts have increasingly found opportunities to expand coverage beyond that which was intended or contemplated at the time the policy was issued. Many of these policies are issued on an “all risk” and occurrence basis. Aggressive plaintiff attorneys have often sought coverage beyond the insurer’s original intent including court interpretations of exclusionary language.

We believe that because of the inherent variation and the likelihood that there are unforeseen and under-quantified liabilities absent from the actuarial estimate, it is prudent to carry loss reserves above the actuarial central estimate. Most of our variance between the carried reserve and the actuarial central estimate is in the most recent accident years for our casualty segment, where the most significant estimation risks reside. These estimation risks are considered when setting the initial loss ratios. In the cases where these risks fail to materialize, favorable loss development will likely occur over subsequent accounting periods. It is also possible that the risks materialize above the amount we considered when booking our initial loss reserves. In this case, unfavorable loss development is likely to occur over subsequent accounting periods.

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Our best estimate of loss and LAE reserves may change as a result of a revision in the actuarial central estimate, the actuary’s certainty in the estimates and processes and our overall view of the underlying risks. From time to time, we benchmark our reserving policies and procedures and refine them by adopting industry best practices where appropriate. A detailed, ground-up analysis of the actuarial estimation risks associated with each of our products and segments, including an assessment of industry information, is performed annually. This information is used when determining management’s best estimate of booked reserves.

Loss reserve estimates are subject to a high degree of variability due to the inherent uncertainty of ultimate settlement values. Periodic adjustments to these estimates will likely occur as the actual loss emergence reveals itself over time. Our loss reserving processes reflect accepted actuarial practices and our methodologies result in a reasonable provision for reserves as of December 31, 2018.

INVESTMENT VALUATION AND OTTI

Throughout each year, we and our investment managers buy and sell securities to achieve investment objectives in accordance with investment policies established and monitored by our board of directors and executive officers.

Equity securities are carried at fair value with unrealized gains and losses recorded within net earnings in 2018. Prior to 2018, unrealized gains and losses on equity securities were recognized through other comprehensive earnings. We classify our investments in fixed income securities into one of three categories: trading, held-to-maturity or available-for-sale. We do not hold any securities classified as trading or held-to-maturity. Available-for-sale securities are carried at fair value with unrealized gains and losses recorded as a component of comprehensive earnings and shareholders’ equity, net of deferred income taxes.

Fair value is defined as the price in the principal market that would be received for an asset to facilitate an orderly transaction between market participants on the measurement date.

We determined the fair value of certain financial instruments based on their underlying characteristics and relevant transactions in the marketplace. We maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

We regularly evaluate our fixed income securities using both quantitative and qualitative criteria to determine impairment losses for other-than-temporary declines in the fair value of the investments. The following are some of the key factors we consider for determining if a security is other-than-temporarily impaired:

· The length of time and the extent to which the fair value has been less than amortized cost,

· The probability of significant adverse changes to the cash flows,

· The occurrence of a discrete credit event resulting in the issuer defaulting on a material obligation, the issuer seeking protection from creditors under the bankruptcy laws, or the issuer proposing a voluntary reorganization under which creditors are asked to exchange their claims for cash or securities having a fair value substantially lower than par value of their claims or

· The probability that we will recover the entire amortized cost basis of our fixed income securities prior to maturity.

Quantitative criteria considered during this process include, but are not limited to: the degree and duration of current fair value as compared to the amortized cost of the security, degree and duration of the security’s fair value being below cost and whether the issuer is in compliance with the terms and covenants of the security. Qualitative criteria include the credit quality, current economic conditions, the anticipated speed of cost recovery, the financial health of and specific prospects for the issuer, as well as the absence of intent to sell or requirement to sell securities prior to recovery. In addition, we consider price declines in our OTTI analysis when they provide evidence of declining credit quality, and we distinguish between price changes caused by credit deterioration as opposed to rising interest rates.

Key factors that we consider in the evaluation of credit quality include:

· Changes in technology that may impair the earnings potential of the investment,

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· The discontinuance of a segment of business that may affect future earnings potential,

· Reduction or elimination of dividends,

· Specific concerns related to the issuer’s industry or geographic area of operation,

· Significant or recurring operating losses, poor cash flows and/or deteriorating liquidity ratios and

· A downgrade in credit quality by a major rating agency.

For mortgage-backed securities and asset-backed securities that have significant unrealized loss positions and major rating agency downgrades, credit impairment is assessed using a cash flow model that estimates likely payments using security-specific collateral and transaction structure. All of our mortgage-backed and asset-backed securities remain AAA-rated by one of the major rating agencies and the fair value is not significantly less than amortized cost.

Under current accounting standards, an OTTI write-down of debt securities, where fair value is below amortized cost, is triggered by circumstances where (1) an entity has the intent to sell a security, (2) it is more likely than not that the entity will be required to sell the security before recovery of its amortized cost basis or (3) the entity does not expect to recover the entire amortized cost basis of the security. If an entity intends to sell a security or if it is more likely than not the entity will be required to sell the security before recovery, an OTTI write-down is recognized in earnings equal to the difference between the security’s amortized cost and its fair value. If an entity does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the OTTI write-down is separated into an amount representing the credit loss, which is recognized in earnings, and the amount related to all other factors, which is recognized in other comprehensive income.

Part of our evaluation of whether particular securities are other-than-temporarily impaired involves assessing whether we have both the intent and ability to continue to hold equity securities in an unrealized loss position. For fixed income securities, we consider our intent to sell a security (which is determined on a security-by-security basis) and whether it is more likely than not we will be required to sell the security before the recovery of our amortized cost basis. Significant changes in these factors could result in a charge to net earnings for impairment losses. Impairment losses result in a reduction of the underlying investment’s cost basis.

RECOVERABILITY OF REINSURANCE BALANCES

Ceded unearned premiums and reinsurance balances recoverable on paid and unpaid losses and settlement expenses are reported separately as assets, rather than being netted with the related liabilities, since reinsurance does not relieve the Company of its liability to policyholders. Such balances are subject to the credit risk associated with the individual reinsurer. Additionally, the same uncertainties associated with estimating unpaid losses and settlement expenses impact the estimates for the ceded portion of such liabilities. We continually monitor the financial condition of our reinsurers. As part of our monitoring efforts, we review their annual financial statements, Securities and Exchange Commission (SEC) filings for reinsurers that are publicly traded, A.M. Best and S&P rating developments and insurance industry developments that may impact the financial condition of our reinsurers. In addition, we subject our reinsurance recoverables to detailed recoverability tests, including one based on average default by S&P rating. Based upon our review and testing, our policy is to charge to earnings, in the form of an allowance, an estimate of unrecoverable amounts from reinsurers. This allowance is reviewed on an ongoing basis to ensure that the amount makes a reasonable provision for reinsurance balances that we may be unable to recover.

DEFERRED POLICY ACQUISITION COSTS

We defer incremental direct costs that relate to the successful acquisition of new or renewal insurance contracts, including commissions and premium taxes. Acquisition-related costs may be deemed ineligible for deferral when they are based on contingent or performance criteria beyond the basic acquisition of the insurance contract, or when efforts to obtain or renew the insurance contract are unsuccessful. All eligible costs are capitalized and charged to expense in proportion to premium revenue recognized. The method followed in computing deferred policy acquisition costs limits the amount of such deferred costs to their estimated realizable value. This would also give effect to the premiums to be earned and anticipated losses and settlement expenses, as well as certain other costs expected to be incurred as the premiums are earned. Judgments as to the ultimate recoverability of such deferred costs are reviewed on a segment basis and are highly dependent upon estimated future loss costs associated with the premiums written. This deferral methodology applies to both gross and ceded premiums and acquisition costs.

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DEFERRED TAXES

We record deferred tax assets and liabilities to the extent that temporary differences between the tax basis and GAAP basis of an asset or liability result in future taxable or deductible amounts. Our deferred tax assets relate to expected future tax deductions arising from claim reserves and future taxable income related to changes in our unearned premium. We also have a significant amount of deferred tax liabilities from unrealized gains on the investment portfolio and deferred acquisition costs.

Periodically, management reviews our deferred tax positions to determine if it is more likely than not that the assets will be realized. These reviews include, among other things, the nature and amount of the taxable income and expense items, the expected timing of when assets will be used or liabilities will be required to be reported, as well as the reliability of historical profitability of businesses expected to provide future earnings. Furthermore, management considers tax-planning strategies it can use to increase the likelihood that the tax assets will be realized. After conducting the periodic review, if management determines that the realization of the tax asset does not meet the more likely than not criteria, an offsetting valuation allowance is recorded, thereby reducing net earnings and the deferred tax asset in that period. In addition, management must make estimates of the tax rates expected to apply in the periods in which future taxable items are realized. Such estimates include determinations and judgments as to the expected manner in which certain temporary differences, including deferred amounts related to our equity method investment, will be recovered. These estimates enter into the determination of the applicable tax rates and are subject to change based on the circumstances.

We consider uncertainties in income taxes and recognize those in our financial statements as required. As it relates to uncertainties in income taxes, our unrecognized tax benefits, including interest and penalty accruals, are not considered material to the consolidated financial statements. Also, no tax uncertainties are expected to result in significant increases or decreases to unrecognized tax benefits within the next 12-month period. Penalties and interest related to income tax uncertainties, should they occur, would be included in income tax expense in the period in which they are incurred.

Additional discussion of other significant accounting policies may be found in note 1 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data.

RESULTS OF OPERATIONS

Consolidated revenue, as displayed in the table that follows, totaled $818.1 million in 2018, compared to $797.2 million in 2017 and $816.3 million in 2016.

CONSOLIDATED REVENUE	Year ended December 31,
(in thousands)	2018		2017		2016
Net premiums earned	$	791,366	$	737,937	$	728,608
Net investment income		62,085		54,876		53,075
Net realized gains		63,407		4,411		34,645
Net unrealized losses on equity securities		(98,735)		—		—
Total consolidated revenue	$	818,123	$	797,224	$	816,328

Increased levels of earned premium, investment income and realized gains all led to increased consolidated revenue in 2018. Net premiums earned were up 7 percent, driven by growth from our casualty and property segments. Premium production was impacted by exits from our recreational vehicle and treaty reinsurance lines in 2017 and 2016, but net premiums earned still increased on an overall basis in each of those periods, with growth of 1 percent and 4 percent, respectively. Investment income increased by 13 percent in 2018, compared to a 3 percent increase during the prior year. The increase was primarily due to a larger asset base as well as higher average interest rates throughout the year. We recorded net realized gains on our investment portfolio in each of the past three years. The majority of gains realized over this period related to sales activities versus calls or maturities. Sales activity was largely due to normal portfolio rebalancing, as well as raising cash to support special dividends paid. Net realized gains for each of the past three years included $4.4 million, $3.4 million and $7.2 million, respectively, of non-cash realized losses on goodwill and definite-lived intangible asset impairments. In 2018, we recorded $98.7 million of net unrealized losses on equity securities. Upon adoption of ASU 2016-01, these losses were recognized in consolidated revenue. Prior to 2018, unrealized gains and losses on equity securities were recognized through other comprehensive earnings.

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NET EARNINGS	Year ended December 31,
(in thousands)	2018		2017		2016
Underwriting income	$	41,632	$	26,844	$	76,125
Net investment income		62,085		54,876		53,075
Net realized gains		63,407		4,411		34,645
Net unrealized losses on equity securities		(98,735)		—		—
Interest expense on debt		(7,437)		(7,426)		(7,426)
General corporate expenses		(9,427)		(11,340)		(10,170)
Equity in earnings of unconsolidated investees		16,056		17,224		10,833
Earnings before income taxes	$	67,581	$	84,589	$	157,082
Income tax benefit (expense)		(3,402)		20,439		(42,162)
Net earnings	$	64,179	$	105,028	$	114,920

Net earnings for 2018 totaled $64.2 million, down from $105.0 million in the prior year. The components of net earnings differed significantly from prior years for two reasons. First, the inclusion of unrealized losses from equity securities in net earnings in 2018 significantly reduced pretax earnings and lowered income tax expense. Second, our effective tax rate and income tax expense were impacted by the application of a 21 percent federal corporate tax rate in 2018, compared to the historical 35 percent rate applied in prior years, as a result of tax reform legislation enacted in 2017. While current tax expense benefited from this reduction in 2018, earnings were lower because our deferred tax items were revalued to reflect the lower enacted rate in 2017. The revaluation reduced our net deferred tax liability and income tax expense by $32.8 million in 2017, which increased earnings, and decreased the effective tax rate by 38.8 percent. Additional information on income tax expense and the impact of tax reform can be found in note 7 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data.

Underwriting Results

Gross premiums written increased by 11 percent in 2018 to record levels despite intense competition across all of our segments, which was unfavorably influenced by excess levels of capital that remain in the industry. New product initiatives within our casualty segment, underlying economic growth and increased marketing efforts in our more established products all contributed to growth during the year. While rates were up modestly for most products, they were up more meaningfully for wind-exposed catastrophe and auto-related coverages.

The 2018 fiscal year was the second consecutive year of active catastrophes for our Company and the industry as a whole. While these types of losses are not unexpected, Hurricane Michael resulted in the largest hurricane loss in our history and was the first time we ceded loss to the first layer of our catastrophe reinsurance treaty since 2005. Catastrophe losses totaled $40.5 million in 2018, adding 5.1 points to the combined ratio, with Hurricane Michael responsible for $23.0 million, Hurricane Florence responsible for $7.5 million and other storms and volcanic activity in Hawaii composing the balance. In 2017, catastrophe losses totaled $39.8 million, adding 5.4 points to the combined ratio, with Hurricanes Harvey, Irma and Maria responsible for $36.0 million of the total. Catastrophe losses in 2016 were $16.3 million, split evenly between amounts related to spring storms and Hurricane Matthew. Apart from the impact of catastrophes, results for each of these years reflected a combination of positive underwriting results for the current accident year and favorable loss reserve development on prior accident years. Favorable development in prior accident years’ reserves was higher than the past two years, with results for 2018 including $50.0 million in favorable development, compared to $38.9 million in 2017 and $42.0 million in 2016. Further discussion of reserve development can be found in note 6 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data.

Incentive and profit-sharing amounts earned by executives, managers and associates are predominately influenced by corporate performance including net earnings excluding after-tax net realized and unrealized gains or losses, combined ratio and return on capital. Return on capital measures components of comprehensive earnings against a minimum required return on capital. Return on capital is the primary measure of executive bonus achievement and a significant component of manager and associate incentive targets. Incentive and profit sharing-related expenses attributable to the favorable reserve developments totaled $7.8 million, $5.9 million and $6.6 million for 2018, 2017 and 2016, respectively. An additional $7.7 million in incentive and profit-sharing-related expenses was recorded in 2017 in connection with the tax reform benefits recognized during the year, $7.0 million of which was recorded in underwriting expenses. These performance-related expenses impact policy acquisition, insurance operating and general corporate expenses line items in the financial statements. Partially offsetting the 2018, 2017 and 2016 increases were $6.1 million, $4.9 million and $2.6 million, respectively, in reductions to incentive and profit-sharing amounts earned due to losses associated with natural catastrophe activity.

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In total, underwriting income was $41.6 million on a 94.7 combined ratio in 2018, compared to $26.8 million on a 96.4 combined ratio in 2017 and $76.1 million on an 89.5 combined ratio in 2016. We achieved our 23rd consecutive year of underwriting profit in 2018, with all three segments contributing to the positive performance. Our ability to continue to produce underwriting income, and to do so at margins which have consistently outperformed the broader industry, is a testament to our underwriters’ discipline throughout the insurance cycle and our continued commitment to underwriting for a profit. We believe our underwriting discipline can differentiate the Company from the broader insurance market by ensuring sound risk selection and appropriate pricing, which helps slow the pace of deterioration in our underwriting results.

The following tables and narrative provide a more detailed look at individual segment performance over the last three years.

GROSS PREMIUMS WRITTEN AND NET PREMIUMS EARNED
	Gross Premiums Written										Net Premiums Earned
(in thousands)	2018		% Change		2017		% Change		2016		2018		2017		2016
CASUALTY
Commercial excess and personal umbrella	$	153,540	12	%	$	137,265	2	%	$	134,000	$	124,350	$	115,543	$	111,079
General liability		100,997	6	%		95,217	4	%		91,557		93,928		90,283		86,853
Commercial transportation		101,267	10	%		92,449	(13)	%		105,697		81,053		78,061		81,402
Professional services		87,243	4	%		84,019	0	%		83,672		79,951		78,508		75,872
Small commercial		53,432	0	%		53,302	4	%		51,391		51,519		49,601		45,660
Executive products		68,501	23	%		55,598	8	%		51,291		21,326		18,086		18,755
Medical professional liability		17,426	(20)	%		21,847	4	%		21,060		16,042		17,072		17,449
Other casualty		71,788	57	%		45,752	111	%		21,680		55,303		31,449		17,773
Total	$	654,194	12	%	$	585,449	4	%	$	560,348	$	523,472	$	478,603	$	454,843
PROPERTY
Commercial property	$	110,974	15	%	$	96,770	0	%	$	96,701	$	71,501	$	63,117	$	68,165
Marine		71,784	20	%		59,663	13	%		52,638		59,795		50,931		48,301
Specialty personal		18,789	6	%		17,804	(31)	%		25,867		16,901		20,793		24,981
Other property		1,370	5	%		1,301	(88)	%		10,931		1,064		3,505		10,720
Total	$	202,917	16	%	$	175,538	(6)	%	$	186,137	$	149,261	$	138,346	$	152,167
SURETY
Miscellaneous	$	47,461	2	%	$	46,461	(4)	%	$	48,184	$	46,968	$	47,237	$	46,235
Contract		30,139	2	%		29,441	(4)	%		30,540		28,196		28,573		28,240
Commercial		29,857	(0)	%		29,954	(0)	%		30,098		26,751		27,625		29,105
Energy		18,648	1	%		18,469	(6)	%		19,557		16,718		17,553		18,018
Total	$	126,105	1	%	$	124,325	(3)	%	$	128,379	$	118,633	$	120,988	$	121,598
Grand total	$	983,216	11	%	$	885,312	1	%	$	874,864	$	791,366	$	737,937	$	728,608

Casualty

Gross premiums written from the casualty segment totaled $654.2 million, up 12 percent in 2018, following increases of 4 percent in 2017 and 8 percent in 2016. Almost all products within the segment posted top line growth. Within other casualty, premiums assumed from Prime increased by 39 percent after more than doubling in 2017, while general binding authority (GBA) more than doubled in 2018, to $12.8 million, after launching in 2017. Diversification and exposure growth led to a 23 percent increase in gross premiums written within our executive products group, as newer coverages, such as cyber liability, supplemented growth from mature product lines. Small price increases for executive product offerings broke the trend of low single digit rate declines that were experienced in recent years. Commercial excess and personal umbrella also grew 12 percent in 2018. Increased marketing efforts, modest rate increases and investments in technology and customer experience initiatives yielded this improved level of production. Continued expansion into the energy casualty space, which we entered in 2016, also benefited the top line for commercial excess.

Premium written by commercial transportation increased by 10 percent. The increase was rate driven, as 2018 marked the second consecutive year of low double digit increases. This follows a 13 percent decline in 2017, which occurred as a result of

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re-underwriting actions taken in response to higher commercial auto loss trends. This business posted growth of 16 percent in 2016.

General liability growth was 6 percent, 4 percent and 5 percent in 2018, 2017 and 2016, respectively. Rates for general liability were relatively flat. Growth was achieved from mature coverages as well as the recently-entered energy casualty line. Production from small commercial was relatively flat in 2018 as a result of level pricing and the exit from select underperforming lines. Small commercial posted premium growth of 4 percent in 2017 and 7 percent in 2016. Premiums were up 4 percent for our professional services group during 2018 despite rates being relatively flat. The 20 percent decrease in medical professional liability premiums is the result of rate decreases, market competition and changes in our underwriting approach.

Property

Gross premiums written in the property segment increased 16 percent in 2018, after decreasing 6 percent in 2017 and 11 percent in 2016. The declines for 2017 and 2016 reflect exits from our RV, treaty reinsurance and facultative reinsurance lines. These products were discontinued due to factors such as poor underwriting performance, lack of scale or unfavorable market conditions. Production for 2016 was also impacted by our exit from crop reinsurance, which occurred due to the acquisition of the cedant company.

Our commercial property business grew 15 percent in 2018, due to a combination of exposure growth and rate increases on wind-prone business. Rates on other catastrophe coverages, such as earthquake, continued to decline, albeit at lower levels than in recent years. Our commercial property business was relatively flat in 2017, as modest exposure growth served to offset rate declines from the catastrophe exposed coverages, and followed a decline of 9 percent in 2016. Premiums from marine increased by 20 percent in 2018, as we secured new business, improved retentions and increased rates on our inland marine coverages. Marine was up 13 percent in 2017, due to a combination of exposure growth and modestly higher prices for inland marine, after declining 2 percent in 2016.

Specialty personal lines is primarily composed of homeowners’ insurance in select locations, including Hawaii, Massachusetts and North Carolina. Premiums from our Hawaii homeowners business increased 10 percent in 2018, after posting a 7 percent increase during 2017 and 8 percent in 2016. Rates have been flat for this coverage, but increased marketing efforts and recognition of our exceptional claim service following the Hawaii volcano losses have helped bring in new business. Specialty personal offerings also included our RV product, which we exited at the end of 2016 due to poor underwriting performance. RV wrote $10.4 million of specialty personal premium in 2016, but decreased to less than $1.0 million in 2017 and had almost no premium in 2018.

Other property increased in 2018 as a result of property exposed GBA business. Other property also includes reinsurance premiums, which declined after we exited our treaty reinsurance business in 2016 and discontinued our facultative reinsurance line in 2015.

Surety

Gross premiums written from our surety segment increased 1 percent in 2018, following a 3 percent decline in 2017 and 2 percent growth in 2016. Miscellaneous surety was up 2 percent in 2018, as a realignment of our sales team allowed the Company to grow in a very competitive market. This product experienced a 4 percent decline in 2017, largely due to targeted reductions to select programs. Contract surety was also up 2 percent in 2018. Despite competition putting pressure on rates and terms, expansion of the commercial construction market and initiatives aimed at improving the customer experience provided an opportunity for growth with conditions and prices that met our high underwriting standards. Contract surety was down 4 percent in 2017, as certain accounts which no longer met our underwriting appetite were non-renewed, and was up 5 percent in 2016 when growth was experienced from bonds targeted to smaller contractors. Commercial surety was down slightly in 2018 and 2017, as market conditions made it difficult to compete on new account submissions. Efforts to selectively trim the portfolio in favor of retaining higher quality, lower risk accounts led to a decline in commercial surety premium in 2016. Energy surety was up 1 percent in 2018 and is combating the lower energy prices and soft market conditions that resulted in the 6 percent decline in 2017. Gross premiums written from energy surety for 2016 were up slightly. 

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UNDERWRITING INCOME (LOSS)
(in thousands)	2018		2017		2016
Casualty	$	11,140	$	3,904	$	36,329
Property		884		(11,859)		12,832
Surety		29,608		34,799		26,964
Total	$	41,632	$	26,844	$	76,125

COMBINED RATIO	2018	2017	2016
Casualty	97.9	99.2	92.0
Property	99.4	108.6	91.6
Surety	75.0	71.2	77.8
Total	94.7	96.4	89.5

Casualty

Underwriting income for the casualty segment was $11.1 million on a 97.9 combined ratio in 2018. The current accident year combined ratio in 2018 was higher than prior years due to a shift in mix of business and new products on which we take a cautious approach to loss ratio selection. The current year loss ratio for 2018 and 2017 was also impacted by higher loss ratio selections on transportation and other auto-related exposures and higher catastrophe losses, as hurricane losses were sustained on certain casualty-oriented products that include ancillary property exposures.

Favorable development on prior accident years’ loss reserves benefited underwriting earnings in each of the past three years. The total benefit from favorable development on prior years’ reserves was $33.3 million for 2018, with the largest amounts of the development coming from accident years 2015 through 2017. Products which generated the majority of the favorable development include commercial excess, personal umbrella, professional services, general liability and small commercial. Increased favorable development on commercial excess, personal umbrella, general liability and professional services was responsible for a significant amount of the difference between the release in 2018 and 2017. Additionally, our transportation business experienced $0.5 million of favorable development in 2018 compared to $7.4 million of adverse development in 2017 and $15.4 million of adverse development in 2016. In response to adverse commercial auto loss trends, we began re-underwriting our transportation book in the fourth quarter 2016, with a focus on obtaining appropriate rate increases and improving risk selection. Our transportation re-underwriting efforts were completed during the second half of 2017 and have helped stabilize the business. Partially offsetting these favorable impacts was an increased level of adverse development on medical professional liability and adverse development on executive products.

Comparatively, overall results for the casualty segment in 2017 included favorable development of $17.5 million, with the bulk of the development attributable to commercial excess, personal umbrella, general liability, executive products, small commercial and professional services across accident years 2014 through 2016. For 2016, results included favorable development of $32.4 million, with the bulk of the development attributable to general liability, executive products, small commercial and commercial excess across accident years 2009 through 2015.

The segment’s loss ratio was 63.0 in 2018, compared to 63.9 in 2017 and 57.1 in 2016. The lower loss ratio in 2018 was due to the higher amounts of favorable development on prior years’ reserves, partially offset by an increased current accident year loss ratio. The expense ratio for the casualty segment was 34.9 in 2018, compared to 35.3 in 2017 and 34.9 in 2016. The decrease in expense ratio in 2018 was a result of lower incentive and profit-sharing expenses. An additional $3.9 million of incentive and profit-sharing expenses was recognized in connection with tax reform benefits during 2017, accounting for nearly 1 point of the expense ratio. Adjusting for this one-time impact, an increase in the expense ratio would have been observed in 2018, as investments were made in technology and our mix had a modest shift towards products with higher acquisition rates.

Property

Underwriting income from the property segment was $0.9 million on a 99.4 combined ratio in 2018. Despite the largest hurricane loss in our history, the segment was still able to achieve profitability for the year. Catastrophe losses for the property segment totaled $38.3 million in 2018 and included $28.9 million from Hurricanes Michael and Florence and $6.1 million from volcanic activity in Hawaii. In comparison, 2017 experienced an underwriting loss that was driven by $38.4 million in catastrophe losses during the year, $34.9 million of which related to Hurricanes Harvey, Irma and Maria. Underwriting profitability was also attained in 2016 and was impacted by $15.8 million of catastrophe loss related to Hurricane Matthew and seasonal wind storms.

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Partially offsetting the catastrophe losses described above, favorable development in prior years’ reserves benefited underwriting results in each of the past three years. Results for 2018 included $10.8 million of favorable development on prior years’ reserves, primarily from accident years 2017 and 2015. Our marine product was the predominant driver of the favorable development, but our commercial property and assumed reinsurance products also contributed. Results for 2017 included $12.1 million of favorable development in prior years’ reserves, largely from marine and commercial property. Releases from marine and other property reinsurance offset adverse development from RV in 2016, resulting in $4.8 million of total favorable development.

The segment’s loss ratio was 56.2 in 2018 compared to 61.5 in 2017 and 46.9 in 2016. Catastrophe losses added nearly 26 points to the loss ratio, compared to 28 points and 10 points of impact from catastrophe losses in 2017 and 2016, respectively. Higher current accident year losses from our fire business also contributed to the higher loss ratio in 2017. These items were partially offset by approximately 5 points of favorable development on prior years’ reserves in 2018, compared to 6 points and 1 point of benefit in the two previous years. The expense ratio for the property segment was 43.2 in 2018 compared to 47.1 in 2017 and 44.7 in 2016. Lower incentive and profit-sharing expenses and a higher premium base led to the lower expense ratio in 2018. The 2017 expense ratio was affected by $1.8 million of incentive and profit-sharing expenses that was recognized in connection with tax reform benefits, which added approximately 1 point to the expense ratio.

Surety

Underwriting income for the surety segment totaled $29.6 million on a 75.0 combined ratio in 2018. Underwriting performance for each of the past three years reflects a combination of positive current accident year results and favorable development in prior accident years’ loss reserves. The current accident year combined ratio in each of the past three years has been in the low 80s, with each product line contributing underwriting profit. Results for 2018 included $5.9 million of favorable development in prior years’ reserves, compared to $9.3 million and $4.8 million in 2017 and 2016, respectively.

The segment’s loss ratio was 12.3 in 2018, compared to 9.0 in 2017 and 15.2 in 2016. A combination of increased current accident year claim activity and lower amounts of favorable development on prior years’ reserves resulted in a higher loss ratio in 2018 when compared to 2017. Increased losses on energy and contract surety in 2016 also contributed to the higher loss ratio in that period. The expense ratio for the surety segment was 62.7 in 2018, compared to 62.2 in 2017 and 62.6 in 2016. The increase in 2018 was due to a modest decline in earned premium, increased investments in technology and a modest shift in mix towards miscellaneous surety, which has  a higher commission structure. The 2017 expense ratio included $1.4 million of incentive and profit-sharing expenses that were recognized in connection with tax reform benefits, which added approximately 1 point to the expense ratio.

NET INVESTMENT INCOME AND REALIZED INVESTMENT GAINS

During 2018, net investment income increased by 13 percent. The increase was primarily due to a larger asset base as well as higher average interest rates throughout the year. The average annual yields on our investments were as follows for 2018, 2017 and 2016:

	2018		2017		2016
PRETAX YIELD
Taxable (on book value)	3.31	%	3.20	%	3.20	%
Tax-exempt (on book value)	2.71	%	2.57	%	2.64	%
Equities (on fair value)	2.54	%	2.71	%	2.85	%
AFTER-TAX YIELD
Taxable (on book value)	2.61	%	2.08	%	2.08	%
Tax-exempt (on book value)	2.57	%	2.44	%	2.50	%
Equities (on fair value)	2.21	%	2.31	%	2.43	%

The after-tax yield reflects the different tax rates applicable to each category of investment. In 2018, our taxable fixed income securities were subject to a corporate tax rate of 21.0 percent, our tax-exempt municipal securities were subject to a tax rate of 5.3 percent and our dividend income was generally subject to a tax rate of 13.1 percent. In 2017 and 2016, our taxable fixed income securities were subject to a corporate tax rate of 35.0 percent, our tax-exempt municipal securities were subject to a tax rate of 5.3 percent and our dividend income was generally subject to a tax rate of 14.2 percent. During 2018, the average after-tax yield on the taxable fixed income portfolio was 2.6 percent, an increase from 2.1 percent in the prior year due to the

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Tax Cuts and Jobs Act of 2017, which lowered the federal corporate tax rate from 35 percent to 21 percent. The average after-tax yield on the tax-exempt portfolio increased to 2.6 percent.

The fixed income portfolio increased by $88.3 million during the year as the majority of operating cash flows were used for fixed income purchases. The tax-adjusted total return on a mark-to-market basis was 0.7 percent. Our equity portfolio decreased by $60.0 million to $340.5 million in 2018 as a result of the decline in equity markets in the fourth quarter, rebalancing to other asset classes and outright sales to support our special dividend. The total return for the year on the equity portfolio was -5.7 percent.

Our investment results for the last five years are shown in the following table:

											Tax
									Pre-tax		Equivalent
									Annualized		Annualized
							Change in		Return on		Return on
	Average		Net		Net Realized		Unrealized		Avg.		Avg.
	Invested		Investment		Gains		Appreciation		Invested		Invested
(in thousands)	Assets (1)		Income (2)(3)		(Losses) (3)		(3)(4)		Assets		Assets
2014		1,943,172		55,608		32,182		55,180	7.4	%	7.7	%
2015		1,957,914		54,644		39,829		(71,049)	1.2	%	1.5	%
2016		1,986,685		53,075		34,645		(2,313)	4.3	%	4.6	%
2017		2,081,309		54,876		4,411		53,719	5.4	%	5.8	%
2018		2,167,510		62,085		63,407		(140,513)	(0.7)	%	(0.6)	%
5-yr Avg.	$	2,027,318	$	56,058	$	34,895	$	(20,995)	3.5	%	3.8	%

(1) Average amounts at beginning and end of year (inclusive of cash and short-term investments).

(2) Investment income, net of investment expenses.

(3) Before income taxes.

(4) Relates to available-for-sale fixed income and equity securities.

We realized a total of $63.4 million in net gains in 2018. Included in this number is $69.9 million in net realized gains in the equity portfolio, $2.2 million in net realized losses in the fixed income portfolio and $4.2 million in other net realized losses, $4.4 million of which related to a non-cash impairment charge on goodwill and definite-lived intangibles. In 2017, we realized $4.4 million in net gains. Included in this number is $10.3 million in net realized gains in the equity portfolio, $1.7 million in net realized losses in the fixed income portfolio and $4.2 million in other net realized losses, $3.4 million of which related to a non-cash impairment charge on goodwill and definite-lived intangibles. In 2016, we realized $34.6 million in net gains. Included in this number is $38.7 million in net realized gains in the equity portfolio, $4.2 million in net realized gains in the fixed income portfolio and $8.3 million in other net realized losses, $7.2 million of which related to a non-cash impairment charge on goodwill.

We regularly evaluate the quality of our investment portfolio. When we determine that a fixed income security has suffered an other-than-temporary decline in value, the investment’s value is adjusted by reclassifying the decline from unrealized to realized losses. This has no impact on shareholders’ equity. We recognized $0.2 million, $2.6 million and $0.1 million in impairment losses in 2018, 2017 and 2016, respectively. All losses were taken on fixed income securities we no longer had the intent to hold until recovery.

The fixed income portfolio contained 777 positions at an unrealized loss as of December 31, 2018. Of these 777 securities, 302have been in an unrealized loss position for 12 consecutive months or longer and represent $19.7 million in unrealized losses. All fixed income securities in the investment portfolio continue to pay the expected coupon payments under the contractual terms of the securities. Based on our analysis, our fixed income portfolio is of a high credit quality and we believe we will recover the amortized cost basis.

Key components to our OTTI procedures are discussed in our critical accounting policy on investment valuation and OTTI and in note 2 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data. Based on our analysis, we have concluded that the securities in an unrealized loss position were not other-than-temporarily impaired at December 31, 2018.

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INVESTMENTS

We maintain a diversified investment portfolio with a prudent mix of fixed income and risk assets. We continually monitor economic conditions, our capital position and the insurance market to determine our tactical allocation. As of December 31, 2018, the portfolio had a fair value of $2.2 billion, an increase of $53.4 million from the end of 2017.

We determined the fair value of certain financial instruments based on their underlying characteristics and relevant transactions in the marketplace. We maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. For additional information, see notes 1 and 2 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data.

As of December 31, 2018, our investment portfolio had the following asset allocation breakdown:

PORTFOLIO ALLOCATION
(in thousands)
	Cost or
	Amortized				Unrealized		% of Total
Asset Class	Cost		Fair Value		Gain/(Loss)		Fair Value		Quality*
U. S. government	$	199,982	$	200,229	$	247	9.1	%	AAA
U.S. agency		31,716		31,904		188	1.5	%	AAA
Non-U.S. govt & agency		8,170		7,639		(531)	0.3	%	BBB+
Agency MBS		402,992		395,253		(7,739)	18.0	%	AAA
ABS/CMBS**		137,224		136,723		(501)	6.2	%	AAA
Corporate		681,909		668,679		(13,230)	30.5	%	A-
Municipal		314,472		320,088		5,616	14.6	%	AA
Total fixed income	$	1,776,465	$	1,760,515	$	(15,950)	80.2	%	AA-
Equities	$	220,373	$	340,483	$	120,110	15.5	%
Short-term investments	$	11,550	$	11,550	$	—	0.5	%
Other invested assets		51,760		51,542		(218)	2.4	%
Cash		30,140		30,140		—	1.4	%
Total portfolio	$	2,090,288	$	2,194,230	$	103,942	100.0	%

*Quality ratings provided by Moody’s, S&P and Fitch

**Non-agency asset-backed and commercial mortgage-backed

Quality in the previous table and in all subsequent tables is an average of each bond’s credit rating, adjusted for its relative weighting in the portfolio.

Fixed income represented 80 percent of our total 2018 portfolio, up 2 percent from 2017. As of December 31, 2018, the fair value of our fixed income portfolio consisted of 48 percent AAA-rated securities, 16 percent AA-rated securities, 20 percent A-rated securities, 10 percent BBB-rated securities and 6 percent non-investment grade or non-rated securities. This compares to 38 percent AAA-rated securities, 28 percent AA-rated securities, 17 percent A-rated securities, 11 percent BBB-rated securities and 6 percent non-investment grade or non-rated securities in 2017.

In selecting the maturity of securities in which we invest, we consider the relationship between the duration of our fixed income investments and the duration of our liabilities, including the expected ultimate payout patterns of our reserves. We believe that both liquidity and interest rate risk can be minimized by such asset/liability management. As of December 31, 2018, our fixed income portfolio’s duration was 4.5 years.

Our equity portfolio had a fair value of $340.5 million at December 31, 2018. Equities comprised 16 percent of our total 2018 portfolio, down 3 percent over 2017. Securities within the equity portfolio are well diversified and are primarily invested in large-cap issues with a preference for dividend income. Our strategy has a value tilt and security selection takes precedence over market timing. Likewise, low turnover throughout our long investment horizon minimizes transaction costs and taxes. 

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FIXED INCOME PORTFOLIO

As of December 31, 2018, our fixed income portfolio had the following rating distributions:

FAIR VALUE									Below
									Investment
(in thousands)	AAA		AA		A		BBB		Grade		No Rating		Fair Value
Bonds:
U.S. government & agency (GSE)	$	222,277	$	9,856	$	—	$	—	$	—	$	—	$	232,133
Non-U.S. government & agency		—		—		690		6,949		—		—		7,639
Corporate - financial		—		30,025		132,639		42,705		3,114		—		208,483
All other corporate		15,553		26,018		119,609		100,351		21,475		—		283,006
Corporate financial - private placements		2,972		13,550		18,440		4,558		5,759		—		45,279
All other corporate - private placements		—		4,801		38,851		22,101		66,158		—		131,911
Municipal		72,826		197,593		46,461		—		—		3,208		320,088
Structured:
GSE - RMBS	$	291,278	$	—	$	—	$	—	$	—	$	—	$	291,278
ABS - utility		15,508		—		—		—		—		—		15,508
ABS - credit cards		31,100		—		—		—		—		—		31,100
ABS - auto loans		49,990		—		—		—		—		—		49,990
All other ABS		14,077		—		—		—		—		—		14,077
GSE - CMBS		103,975		—		—		—		—		—		103,975
CMBS		26,048		—		—		—		—		—		26,048
Total	$	845,604	$	281,843	$	356,690	$	176,664	$	96,506	$	3,208	$	1,760,515

Mortgage-Backed, Commercial Mortgage-Backed and Asset-Backed Securities

The following table summarizes the distribution of our mortgage-backed securities (MBS) portfolio by investment type, as of the dates indicated:

AGENCY MBS
	Amortized
(in thousands)	Cost		Fair Value		% of Total
2018
Pass-throughs	$	262,752	$	259,728	65.7	%
Sequential		107,951		103,975	26.3	%
Planned amortization class		32,289		31,550	8.0	%
Total	$	402,992	$	395,253	100.0	%
2017
Pass-throughs	$	210,492	$	211,706	64.4	%
Sequential		82,766		81,355	24.8	%
Planned amortization class		35,871		35,410	10.8	%
Total	$	329,129	$	328,471	100.0	%

Our allocation to agency mortgage-backed securities totaled $395.3 million as of December 31, 2018. MBS represented 22 percent of the fixed income portfolio compared to $328.5 million or 20 percent of that portfolio as of December 31, 2017.

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We believe MBS investments add diversification, liquidity, credit quality and additional yield to our portfolio. Our objective for the MBS portfolio is to provide reasonable cash flow stability where we are compensated for the call risk associated with residential refinancing. The MBS portfolio includes mortgage-backed pass-through securities and collateralized mortgage obligations (CMO) which include planned amortization classes (PACs) and sequential pay structures. Our MBS portfolio does not include interest-only securities or principal-only securities. As of December 31, 2018, all of the securities in our MBS portfolio were rated AAA and issued by Government Sponsored Enterprises (GSEs) such as the Governmental National Mortgage Association (GNMA), Federal National Mortgage Association (FNMA) or the Federal Home Loan Mortgage Corporation (FHLMC).

Variability in the average life of principal repayment is an inherent risk of owning mortgage-related securities. However, we reduce our portfolio’s exposure to prepayment risk by seeking characteristics that tighten the probable scenarios for expected cash flows. As of December 31, 2018, the MBS portfolio contained 66 percent of pure pass-throughs compared to 64 percent as of December 31, 2017. An additional 26 percent of the MBS portfolio was invested in sequential payer, up from 25 percent in 2017. 

The following table summarizes the distribution of our asset-backed and commercial mortgage-backed securities portfolio as of the dates indicated:

ABS/CMBS
	Amortized
(in thousands)	Cost		Fair Value		% of Total
2018
Auto	$	50,062	$	49,990	36.6	%
Credit card		31,058		31,100	22.7	%
CMBS		26,490		26,048	19.1	%
CLO		15,582		15,508	11.3	%
Equipment		5,870		5,878	4.3	%
Student		4,594		4,616	3.4	%
Other		3,568		3,583	2.6	%
Total	$	137,224	$	136,723	100.0	%
2017
Auto	$	28,664	$	28,503	40.4	%
Credit card		5,187		5,207	7.4	%
CMBS		29,807		30,102	42.7	%
CLO		—		—	—	%
Equipment		3,866		3,860	5.5	%
Student		—		—	—	%
Other		2,881		2,854	4.0	%
Total	$	70,405	$	70,526	100.0	%

An asset-backed security (ABS) or commercial mortgage-backed security (CMBS) is a securitization collateralized by the cash flows from a specific pool of underlying assets. These asset pools can include items such as credit card payments, auto loans, structured bank loans in the form of collateralized loan obligations (CLOs) and residential or commercial mortgages. As of December 31, 2018, ABS/CMBS investments were $136.7 million (8 percent) of the fixed income portfolio, compared to $70.5 million (4 percent) as of December 31, 2017. All of the securities in the ABS/CMBS portfolio were rated AAA as of December 31, 2018. We believe that ABS/CMBS investments add diversification and additional yield to the portfolio while often adding superior cash flow stability over mortgage pass-throughs or CMOs.

When making investments in MBS/ABS/CMBS, we evaluate the quality of the underlying collateral, the structure of the transaction (which dictates how any losses in the underlying collateral will be distributed) and prepayment risks. All of our collateralized securities carry the highest credit rating by one or more major rating agencies and continue to pay according to contractual terms. We had $10.3 million in unrealized losses in these asset classes as of December 31, 2018.

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Municipal Fixed Income Securities

As of December 31, 2018, municipal bonds totaled $320.1 million (18 percent) of our fixed income portfolio, compared to $636.2 million (38 percent) as of December 31, 2017. We reduced our allocation to municipal bonds during 2018 as the lower corporate tax rate from the TCJA diminished the asset class’ relative value when compared to other sectors. Despite the change, we still believe municipal fixed income securities can provide diversification and additional tax-advantaged yield to our portfolio. Our objective for the municipal fixed income portfolio is to provide reasonable cash flow stability and increased after-tax yield.

Our municipal fixed income portfolio is comprised of general obligation (GO) and revenue securities. The revenue sources include sectors such as sewer and water, public improvement, school, transportation and colleges and universities.

As of December 31, 2018, approximately 42 percent of the municipal fixed income securities in the investment portfolio were GO and the remaining 58 percent were revenue based. Eighty-fivepercent of our municipal fixed income securities were rated AA or better, while 99 percent were rated A or better.

Corporate Debt Securities

As of December 31, 2018, our corporate debt portfolio totaled $668.7 million (38 percent) of the fixed income portfolio compared to $519.0 million (31 percent) as of December 31, 2017. The corporate allocation includes floating rate bank loans and bonds that are below investment grade in credit quality and offer incremental yield over our core fixed income portfolio. Non-investment grade bonds totaled $96.5 million at the end of 2018. The corporate debt portfolio has an overall quality rating of A- diversified among 628 issues.

The following table illustrates our corporate debt exposure to the financial and non-financial sectors as of December 31, 2018, including fair value, cost basis and unrealized gains and losses:

CORPORATES
					Gross		Gross
	Amortized				Unrealized		unrealized
(in thousands)	Cost		Fair Value		Gains		losses
Bonds:
Corporate - financial	$	211,023	$	208,483	$	1,112	$	(3,652)
All other corporate		288,737		283,006		1,292		(7,023)
Financials - private placements		45,661		45,279		304		(686)
All other corporate - private placements		136,488		131,911		186		(4,763)
Total	$	681,909	$	668,679	$	2,894	$	(16,124)

We believe corporate debt investments add diversification and additional yield to our portfolio. Because corporates make up a large portion of the fixed income opportunity set, the corporate debt investments will continue to be a significant part of our investment program.

The amortized cost and fair value of fixed income securities at December 31, 2018, by contractual maturity, are shown as follows:

TOTAL FIXED INCOME
(in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	41,319	$	41,333
Due after one year through five years		411,154		410,680
Due after five years through 10 years		615,060		608,115
Due after 10 years		168,716		168,412
Mtge/ABS/CMBS*		540,216		531,975
Total fixed income	$	1,776,465	$	1,760,515

*Mortgage-backed, asset backed and commercial mortgage-backed

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EQUITY SECURITIES

As of December 31, 2018, our equity portfolio totaled $340.5 million (16 percent) of the investment portfolio, compared to $400.5 million (19 percent) as of December 31, 2017. The securities within the equity portfolio remain primarily invested in large-cap issues with a focus on dividend income. In addition, we have investments in three broadly diversified, exchange traded funds (ETFs) that represent market indexes similar to the Russell 1000 Index, Russell 2000 Index and the S&P 500 Index. The ETF portfolio is congruent with the actively managed equity portfolios and solves for exposures that line up with our overall benchmark index, the Russell 3000.

INTEREST AND CORPORATE EXPENSE

We incurred $7.4 million of interest expense on outstanding debt during 2018, 2017 and 2016. At December 31, 2018, 2017 and 2016, our long-term debt consisted of $150.0 million in senior notes maturing September 15, 2023, and paying interest semi-annually at the rate of 4.875 percent.

As discussed previously, general corporate expenses tend to fluctuate relative to our incentive compensation plans. Our compensation model measures components of comprehensive earnings against a minimum required return on our capital. Bonuses are earned as we generate earnings in excess of this required return. In 2018, 2017 and 2016, we exceeded the required return, resulting in the accrual of executive bonuses. Decreased levels of comprehensive earnings in 2018 resulted in lower variable compensation earned than in 2017 and 2016.

INVESTEE EARNINGS

We maintain a 40 percent equity interest in Maui Jim, a manufacturer of high-quality sunglasses. Maui Jim’s chief executive officer owns a controlling majority of the outstanding shares of Maui Jim. Maui Jim is a private company and, as such, the market for its stock is limited. Our investment in Maui Jim is carried at the holding company, RLI Corp., level as it is not core to our insurance operations. As a minority shareholder, we are subject to the decisions of the controlling shareholder, which may impact the value of our investment. In 2018, we recorded $12.5 million in earnings from this investment compared to $14.4 million in 2017 and $9.7 million in 2016. Sunglass sales were up 1 percent in 2018, after increasing 9 percent in 2017 and 2 percent in 2016. The decrease in Maui Jim’s earnings in 2018 was related to increased advertising expense and foreign exchange losses in 2018, compared to foreign exchange gains in 2017, and benefits recognized in 2017 associated with tax reform.

In 2018 and 2016, we received a dividend from Maui Jim. Dividends from Maui Jim have been irregular in nature and while they provide added liquidity when received, we do not rely on those dividends to meet our liquidity needs. While these dividends do not flow through the investee earnings line, they do result in the recognition of a tax benefit, which is discussed in the income tax section that follows.

As of December 31, 2018, we had a 23 percent interest in the equity and earnings of Prime Holdings Insurance Services, Inc. (Prime). Prime writes business through two Illinois domiciled insurance carriers, Prime Insurance Company, an excess and surplus lines company, and Prime Property and Casualty Insurance Inc., an admitted insurance company. As a minority shareholder, we are subject to the decisions of the controlling shareholder, which may impact the value of our investment. In 2018, we recorded $3.6 million in investee earnings for Prime, compared to $2.8 million in 2017 and $1.1 million in 2016. Additionally, we maintained a 25 percent quota share reinsurance treaty with Prime, which contributed $41.1 million of gross premiums written and $34.2 million of net premiums earned during 2018, compared to $29.6 million of gross premiums written and $21.0 million of net premiums earned during 2017 and $13.4 million of gross premiums written and $11.4 million of net premiums earned during 2016.  Our participation on the quota share reinsurance treaty will be reduced to 6 percent in 2019 as discussed in the Outlook for 2019 section below.

INCOME TAXES

Our effective tax rates were 5.0 percent, -24.2 percent and 26.8 percent for 2018, 2017 and 2016, respectively. Effective rates are dependent upon components of pretax earnings and the related tax effects. While the effective rate was low in 2018, it was significantly lower in 2017 as a result of the impact of tax reform. Major factors contributing to the low rate in 2018 are the inclusion of unrealized losses from equity securities in pretax earnings in 2018, a reduced federal tax rate and adjustments to provisional deferred tax amounts recorded in 2017.

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Among other provisions, the Tax Cuts and Jobs Act of 2017 (TCJA) lowered the federal corporate tax rate from 35 percent to 21 percent effective January 1, 2018. Our deferred tax items were revalued as of year-end 2017 to reflect the lower rate, which reduced our net deferred tax liability and income tax expense by $32.8 million and decreased the effective tax rate by 38.8 percent.

Except for two aspects, the accounting for the tax effects of the enactment of the TCJA were completed as of December 31, 2017. The first provisional item recorded in 2017 was related to an expected disallowance of deductions for certain performance based compensation, including bonuses and stock options. At the time of enactment, there was a lack of clarity on whether some amounts could be grandfathered in as deductible. The Internal Revenue Service (IRS) and Treasury Department provided additional guidance and we were able to finalize the accounting in 2018 by recording a $2.3 million deferred tax benefit to restore the deferred tax assets related to those performance based compensation amounts. The second provisional item related to discount factors on loss reserves that the IRS had not yet published. The IRS published the factors in the fourth quarter of 2018 and we were able to complete the accounting for the effects of the enactment of the TCJA. While there was no net impact to the deferred tax amount that was recorded at December 31, 2017, we implemented the new discounting methodology and will recognize the adjustment ratably over the allowed eight-year period beginning in 2018.

New accounting guidance required the excess tax benefit on share-based compensation to flow through income tax expense beginning in 2017. Prior to the adoption, excess tax benefits on share-based compensation were recorded directly to shareholders’ equity and had no impact on the effective tax rate. Due to the new accounting method, we recognized a $4.5 million and $5.8 million tax benefit in 2018 and 2017, respectively, which decreased the effective tax rate by 6.7 percent and 6.9 percent, respectively.

Our net earnings include equity in earnings of unconsolidated investees, Maui Jim and Prime. The investees do not have a policy or pattern of paying dividends. As a result, we record a deferred tax liability on the earnings at the recently revised corporate capital gains rate of 21 percent in anticipation of recovering our investments through means other than through the receipt of dividends, such as a sale. In the fourth quarter of 2017, Maui Jim gave notification that a $9.9 million dividend would be paid in January 2018. Even though no dividend was received in 2017, we were aware that the lower tax rate applicable to affiliated dividends (7.4 percent in 2018) would be applied when the dividend was paid in 2018 and we therefore recorded a $1.4 million tax benefit in 2017. We received a $9.9 million dividend from Maui Jim in the fourth quarter of 2016 and recognized a $2.8 million tax benefit from applying the lower tax rate applicable to affiliated dividends (7.0 percent in 2016), as compared to the corporate capital gains rate on which the deferred tax liabilities were based. Standing alone, the dividends resulted in a 1.6 percent and 1.8 percent reduction to the 2017 and 2016 effective tax rates, respectively. As no additional dividends were declared from unconsolidated investees in 2018, there was no impact to the 2018 effective tax rate.

Dividends paid to our Employee Stock Ownership Plan (ESOP) also result in a tax deduction. Dividends paid to the ESOP in 2018, 2017 and 2016 resulted in tax benefits of $1.2 million $2.9 million and $3.3 million, respectively. These tax benefits reduced the effective tax rate for 2018, 2017 and 2016 by 1.8 percent, 3.4 percent and 2.1 percent, respectively.

In addition, our pretax earnings in 2018 included $21.1 million of investment income that is partially exempt from federal income tax, compared to $25.4 million and $24.9 million in 2017 and 2016, respectively.

NET UNPAID LOSSES AND SETTLEMENT EXPENSES

The primary liability on our balance sheet relates to unpaid losses and settlement expenses, which represents our estimated liability for losses and related settlement expenses before considering offsetting reinsurance balances recoverable. The largest asset on our balance sheet, outside of investments, is the reinsurance balances recoverable on unpaid losses and settlement expenses, which serves to offset this liability.

The liability can be split into two parts: (1) case reserves representing estimates of losses and settlement expenses on known claims and (2) IBNR reserves representing estimates of losses and settlement expenses on claims that have occurred but have not yet been reported to the Company. Our gross liability for both case and IBNR reserves is reduced by reinsurance balances recoverable on unpaid losses and settlement expenses to calculate our net reserve balance. This net reserve balance increased to $1,096.3 million at December 31, 2018, from $969.5 million as of December 31, 2017. This reflects incurred losses of $428.2 million in 2018 offset by paid losses of $301.4 million compared to incurred losses of $401.6 million offset by $283.2 million paid in 2017. For more information on the changes in loss and LAE reserves by segment, see note 6 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data.

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Gross reserves (liability) and the reinsurance balances recoverable (asset) are generally subject to the same influences that affect net reserves, though changes to our reinsurance agreements can cause reinsurance balances recoverable to behave differently. Total gross loss and LAE reserves increased to $1.5 billion at December 31, 2018 from $1.3 billion at December 31, 2017 while ceded loss and LAE reserves increased to $365.0 million from $302.0 million over the same period.

LIQUIDITY AND CAPITAL RESOURCES

OVERVIEW

We have three primary types of cash flows: (1) operating cash flows, which consist mainly of cash generated by our underwriting operations and income earned on our investment portfolio, (2) investing cash flows related to the purchase, sale and maturity of investments and (3) financing cash flows that impact our capital structure, such as changes in debt and shares outstanding. The following table summarizes these three cash flows over the last three years:

(in thousands)	2018		2017		2016
Operating cash flows	$	217,102	$	197,525	$	174,463
Investing cash flows (uses)		(134,209)		(81,212)		(53,622)
Financing cash flows (uses)		(77,024)		(110,311)		(113,653)

We have posted positive operating cash flow in each of the last three years. Variations in operating cash flow between periods are largely driven by the volume and timing of premium receipt, claim payments, reinsurance and taxes. In addition, fluctuations in insurance operating expenses impact operating cash flow. During 2018, the majority of cash flow uses were related to financing and investing activities, and associated with the payments of dividends and net purchases of investments, respectively.

We have entered into certain contractual obligations that require the Company to make recurring payments. The following table summarizes our contractual obligations as of December 31, 2018:

CONTRACTUAL OBLIGATIONS
	Payments due by period
	Less than 1						More than
(in thousands)	yr.		1-3 yrs.		3-5 yrs.		5 yrs.		Total
Loss and settlement expense reserves	$	405,882	$	545,320	$	271,154	$	238,992	$	1,461,348
Long-term debt		—		—		150,000		—		150,000
Operating leases		5,911		11,943		10,343		3,968		32,165
Other invested assets		14,905		10,482		587		264		26,238
Total	$	426,698	$	567,745	$	432,084	$	243,224	$	1,669,751

Loss and settlement expense reserves represent our best estimate of the ultimate cost of settling reported and unreported claims and related expenses. As discussed previously, the estimation of loss and loss expense reserves is based on various complex and subjective judgments. Actual losses and settlement expenses paid may deviate, perhaps substantially, from the reserve estimates reflected in our financial statements. Similarly, the timing for payment of our estimated losses is not fixed and is not determinable on an individual or aggregate basis. The assumptions used in estimating the payments due by periods are based on our historical claims payment experience. Due to the uncertainty inherent in the process of estimating the timing of such payments, there is a risk that the amounts paid in any period can be significantly different than the amounts disclosed above. Amounts disclosed above are gross of anticipated amounts recoverable from reinsurers. Reinsurance balances recoverable on unpaid loss and settlement reserves are reported separately as assets, instead of being netted with the related liabilities, since reinsurance does not discharge the Company of our liability to policyholders. Reinsurance balances recoverable on unpaid loss and settlement reserves totaled $365.0 million at December 31, 2018, compared to $302.0 million in 2017.

The next largest contractual obligation relates to long-term debt outstanding. On October 2, 2013, we completed a public debt offering of $150.0 million in senior notes maturing September 15, 2023, (a 10-year maturity) and paying interest semi-annually at the rate of 4.875 percent. The notes were issued at a discount resulting in proceeds, net of discount and commission, of $148.6 million. We are not party to any off-balance sheet arrangements. See note 4 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data for more information on our long-term debt. Additionally, see note 2 to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data for information on our obligations for other invested assets.

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Our primary objective in managing our capital is to preserve and grow shareholders’ equity and statutory surplus to improve our competitive position and allow for expansion of our insurance operations. Our insurance subsidiaries must maintain certain minimum capital levels in order to meet the requirements of the states in which we are regulated. Our insurance companies are also evaluated by rating agencies that assign financial strength ratings that measure our ability to meet our obligations to policyholders over an extended period of time.

We have historically grown our shareholders’ equity and/or policyholders’ surplus as a result of three sources of funds: (1) earnings on underwriting and investing activities, (2) appreciation in the value of our investments and (3) the issuance of common stock and debt.

At December 31, 2018, we had cash, short-term investments and other investments maturing within one year of approximately $83.0 million and an additional $410.7 million of investments maturing between 1 to 5 years. We maintain a revolving line of credit with JP Morgan Chase Bank N.A., which permits the Company to borrow up to an aggregate principal amount of $50.0 million. This facility was entered into during the second quarter of 2018 and replaced the previous $40.0 million facility which expired on May 28, 2018. Under certain conditions, the line may be increased up to an aggregate principal amount of $75.0 million. The facility has a two-year term that expires on May 24, 2020. As of and during the year ended December 31, 2018, no amounts were outstanding on this facility.

Additionally, two of our insurance companies, RLI Ins. and Mt. Hawley, are members of the Federal Home Loan Bank of Chicago (FHLBC). Membership in the Federal Home Loan Bank system provides both companies access to an additional source of liquidity via a secured lending facility. Based on qualifying assets at year-end, aggregate borrowing capacity is approximately $20 million. However, under certain circumstances, that capacity may be increased based on additional FHLBC stock purchased and available collateral. Our membership allows each insurance subsidiary to determine tenor and structure at the time of borrowing. As of and during the year ended December 31, 2018, there were no outstanding borrowings with the FHLBC.

We believe that cash generated by operations, cash generated by investments and cash available from financing activities will provide sufficient sources of liquidity to meet our anticipated needs over the next 12 to 24 months. We have consistently generated positive operating cash flow. The primary factor in our ability to generate positive operating cash flow is underwriting profitability, which we have achieved for 23 consecutive years.

OPERATING ACTIVITIES

The following list highlights some of the major sources and uses of cash flow from operating activities:

Sources	Uses
Premiums received	Claims
Loss payments from reinsurers	Ceded premium to reinsurers
Investment income (interest & dividends)	Commissions paid
Unconsolidated investee dividends from affiliates	Operating expenses
Funds held	Interest expense
	Income taxes
	Funds held

Our largest source of cash is from premiums received from our customers, which we receive at the beginning of the coverage period for most policies. Our largest cash outflow is for claims that arise when a policyholder incurs an insured loss. Because the payment of claims occurs after the receipt of the premium, often years later, we invest the cash in various investment securities that earn interest and dividends. We use cash to pay commissions to brokers and agents, as well as to pay for ongoing operating expenses such as salaries, rent, taxes and interest expense. We also utilize reinsurance to manage the risk that we take on our policies. We cede, or pay out, part of the premiums we receive to our reinsurers and collect cash back when losses subject to our reinsurance coverage are paid.

The timing of our cash flows from operating activities can vary among periods due to the timing by which payments are made or received. Some of our payments and receipts, including loss settlements and subsequent reinsurance receipts, can be significant, so their timing can influence cash flows from operating activities in any given period. We are subject to the risk of incurring significant losses on catastrophes, both natural (such as earthquakes and hurricanes) and man-made (such as

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terrorism). If we were to incur such losses, we would have to make significant claims payments in a relatively concentrated period of time.

INVESTING ACTIVITIES

The following list highlights some of the major sources and uses of cash flow from investing activities:

Sources	Uses
Proceeds from sale, call or maturity of bonds	Purchase of bonds
Proceeds from sale of stocks	Purchase of stocks
Proceeds from sale of other invested assets	Purchase of other invested assets
	Acquisitions
	Purchase of property & equipment

We maintain a diversified investment portfolio representing policyholder funds that have not yet been paid out as claims, as well as the capital we hold for our shareholders. As of December 31, 2018, our portfolio had a carrying value of $2.2 billion. Portfolio assets at December 31, 2018, increased by $53.4 million, or 2 percent, from December 31, 2017.

Our overall investment philosophy is designed to first protect policyholders by maintaining sufficient funds to meet corporate and policyholder obligations and then generate long-term growth in shareholders’ equity. Because our existing and projected liabilities are sufficiently funded by the fixed income portfolio, we can improve returns by investing a portion of the surplus (within limits) in a risk assets portfolio largely made up of equities. As of December 31, 2018, 42 percent of our shareholders’ equity was invested in equities, compared to 47 percent at December 31, 2017 and 45 percent at December 31, 2016.

The fixed income portfolio is structured to meet policyholder obligations and optimize the generation of after-tax investment income and total return.

FINANCING ACTIVITIES

In addition to the previously discussed operating and investing activities, we also engage in financing activities to manage our capital structure. The following list highlights some of the major sources and uses of cash flow from financing activities:

Sources	Uses
Proceeds from stock offerings	Shareholder dividends
Proceeds from debt offerings	Debt repayment
Short-term borrowing	Share buy-backs
Shares issued under stock option plans

Our capital structure is comprised of equity and debt obligations. As of December 31, 2018, our capital structure consisted of $149.1 million in 10-year maturity senior notes (long-term debt) and $806.8 million of shareholders’ equity. Debt outstanding comprised 16 percent of total capital as of December 31, 2018.

At the holding company (RLI Corp.) level, we rely largely on dividends from our insurance company subsidiaries to meet our obligations for paying principal and interest on outstanding debt, corporate expenses and dividends to RLI Corp. shareholders. As discussed further below, dividend payments to RLI Corp. from our principal insurance subsidiary are restricted by state insurance laws as to the amount that may be paid without prior approval of the insurance regulatory authorities of Illinois. As a result, we may not be able to receive dividends from such subsidiary at times and in amounts necessary to pay desired dividends to RLI Corp. shareholders. On a GAAP basis, as of December 31, 2018, our holding company had $806.8 million in equity. This includes amounts related to the equity of our insurance subsidiaries, which is subject to regulatory restrictions under state insurance laws. The unrestricted portion of holding company net assets is comprised primarily of investments and cash, including $63.1 million in liquid investment assets, which more than covers our annual holding company expenditures. Unrestricted funds at the holding company are available to fund debt interest, general corporate obligations and regular dividend payments to our shareholders. If necessary, the holding company also has other potential sources of liquidity that could provide for additional funding to meet corporate obligations or pay shareholder dividends, which include a revolving line of credit, as well as access to the capital markets.

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Ordinary dividends, which may be paid by our principal insurance subsidiary without prior regulatory approval, are subject to certain limitations based upon statutory income, surplus and earned surplus. The maximum ordinary dividend distribution from our principal insurance subsidiary in a rolling 12-month period is limited by Illinois law to the greater of 10 percent of RLI Ins. policyholder surplus, as of December 31 of the preceding year, or the net income of RLI Ins. for the 12-month period ending December 31 of the preceding year. Ordinary dividends are further restricted by the requirement that they be paid from earned surplus. In 2018, 2017 and 2016, our principal insurance subsidiary paid ordinary dividends totaling $13.0 million, $107.0 million and $123.6 million, respectively, to RLI Corp. Any dividend distribution in excess of the ordinary dividend limits is deemed extraordinary and requires prior approval from the IDOI. In 2018, our principal insurance subsidiary sought and received regulatory approval prior to the payment of extraordinary dividends totaling $110.0 million. No extraordinary dividends were paid in 2017 or 2016. Given the amount of dividends paid during the prior rolling 12-month period, the net assets of our principal insurance subsidiary are restricted until the fourth quarter of 2019 and cannot be distributed to RLI Corp. without prior approval of the IDOI. In addition to restrictions from our principal subsidiary’s insurance regulator, we also consider internal models and how capital adequacy is defined by our rating agencies in determining amounts available for distribution. However, as discussed above, RLI Corp. had the necessary amount of unrestricted liquid net assets on hand at December 31, 2018 to cover normal annual holding company expenditures as they are incurred and become payable in 2019.

Our 171st consecutive dividend payment was declared in February 2019 and will be paid on March 20, 2019, in the amount of $0.22 per share. Since the inception of cash dividends in 1976, we have increased our annual dividend every year.

OUTLOOK FOR 2019

In 2018, the insurance industry experienced its second consecutive year of poor underwriting results due to severe catastrophe activity. Our combined ratio was impacted by catastrophe losses and rose to 94.7 and 96.4 in 2018 and 2017, respectively. Despite this elevated level of catastrophe losses, we produced an underwriting profit, exhibiting once again the benefits of our underwriting discipline and diverse product portfolio. The result for 2018 represented our 23rd consecutive year of producing an underwriting profit. We expect to produce a 24th year of underwriting profit in 2019.

The insurance industry’s return on equity has been generally poor, averaging 6.9 percent over the past five years. The industry has had a difficult time maintaining pricing discipline and significant competition continues in most of our lines of business. Broadened coverage and aggressive plaintiffs’ attorneys have also impacted loss severity trends. While we have been impacted by broader industry events, we remain a disciplined underwriting company. We outperformed the industry on both a combined ratio and return on equity basis and expect that to continue in 2019. While we have added new products in recent years that are gaining momentum, we have increased our focus on modernizing and investing in our proven, mature, profitable offerings. This focus helped produce solid premium growth in 2018, and investments made and a continued focus in these areas should provide further growth opportunities in ongoing products in 2019. We have also taken underwriting actions, including exiting certain unprofitable products, as discussed in the casualty section that follows. We believe these decisions will improve the health of our product portfolio but will challenge our ability to grow premiums on an overall basis. Our willingness to sacrifice top-line premium growth to improve profitability is a hallmark of our culture.

Within our investment portfolio, we expect investment income to grow modestly, as interest rates continue to rise and our invested asset base grows. As a result of these factors, we have a positive outlook for 2019, as we continue to execute on our specialty business model and focus on underwriting excellence. Some additional detail by segment follows.

CASUALTY

We expect the pricing environment in casualty to be relatively stable to modestly positive for most products. Persistent industry adverse development in commercial auto coverages has led to significant rate increases for several years, which we anticipate will continue. While trends impacting commercial auto have not spread more broadly, several insurers have noted worsening loss trends in general and professional liability lines, which could lead to improved broader industry pricing discipline. Our executive products group may face a volatile loss environment and reactionary industry pricing as products such as directors and officers insurance have experienced elevated securities class action activity and cyber liability continues to evolve in terms of coverage and loss expectations.

To foster growth, we expect to continue to make investments in marketing and technology in our personal lines, transportation and professional services. Achieving growth in our small commercial package business will be difficult due to competitive pressures, particularly with regard to workers’ compensation coverage where rate decreases are likely to continue.

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Several of our newer products experienced significant growth in 2018. We expect this growth to continue, although at a slower pace, in products such as energy casualty, general binding authority and cyber liability. Because we lack robust historical loss information on these newer products, our reserving practices have tended to increase our loss ratio as the weighting of these products has increased. Our recent re-underwriting in our transportation business has also resulted in our overall loss ratio increasing. It is difficult to estimate the timing, magnitude or direction of future adjustment to reserves for these products as actual loss activity matures.

From a premium perspective, casualty will be under pressure in 2019, due to a decision at the end of 2018 to curtail or exit certain lines of business. We reduced our participation in our assumed reinsurance treaty with Prime from 25 percent to 6 percent. Our 23 percent minority interest remains unchanged. While Prime results have been positive, we are one step removed from both underwriting and claims handling. Given their significant premium growth and the increasing portion of our total premium they were becoming, we believed this action was necessary to reduce concentration risk. We also exited our healthcare liability business, which included primary and excess liability coverage for long-term care facilities, and our Real Estate Investment Trust business, which included liability coverage for large real estate portfolios. These actions were taken as losses had exceeded our expectations and our assessment of the competitive environment did not support a conclusion that an underwriting profit could be achieved in the near term. In combination, these decisions will reduce gross written premium by approximately $50 million, although they should result in improved underwriting results.

PROPERTY

We expect growth in the property segment in 2019, but at a slower pace than in 2018. Industry catastrophe activity was elevated for the second consecutive year. Industry pricing has not increased materially, but this remains a distinct possibility as such losses have historically served as a potential catalyst for improved pricing discipline. We believe such discipline, as well as tighter terms and conditions, are warranted. Our catastrophe book is diverse, which aided in our ability to produce an underwriting profit in 2018, despite significant catastrophe losses incurred.

Marine has been growing and achieving rate increases for six consecutive years. Given market turmoil driven by Lloyds re-underwriting efforts and industry losses, we expect more submissions and the ability to increase rates to continue. Our focus on marketing and investment in technology to improve our producers’ operating efficiency in Hawaii should continue growth for that product as well. We received positive feedback on claim handling for the catastrophe events of 2018. That is the touchpoint that matters most to our customers and will support growth in this segment. Further expense ratio improvement is planned given continued growth in this segment and the loss ratio should return to more historical levels absent above average catastrophe losses in 2019.

SURETY

Our surety segment has experienced one of the most competitive environments among our product portfolio. A key driver of this competition has been continued strong profitability, although there have been several noticeable losses in this market recently. Our growth in surety has been curtailed by our underwriters’ reluctance to chase premium dollars and loosen terms and conditions, which are trends we have seen among our competitors. In addition to the competitive environment, surety’s forecast for 2019 will depend on economic activity and levels of public construction, particularly within our contract surety products. After a lengthy period of economic expansion, we are wary of the financial health of contractors and will therefore exercise caution when considering new business opportunities.

Our commercial and energy surety account-driven business will also be difficult to grow, given the competitive environment. We do expect growth in the miscellaneous surety product. In the last few years, we have re-evaluated and simplified our underwriting approach, upgraded technology and focused on ease of doing business with producers. We expect growth trends for miscellaneous surety to continue, but the overall top line for surety to remain flat given the pressure on larger accounts that make up the majority of this segment. The surety segment’s loss ratio may be under pressure, but we expect the segment to produce underwriting profit in 2019.

INVESTMENTS

A confluence of headline events and a shift in market sentiment in the early fall led to a rise in market volatility in late 2018. Although the year began with significant optimism about a new tax regime and higher levels of sustained growth, it ended with tighter financial conditions, uncertainty surrounding trade policy and risk assets in decline. Unfortunately, the downdraft was enough to keep our portfolio’s total return results below zero for the year (-0.2 percent) for the first time since the financial crisis. Nevertheless, we did experience an uplift in investment income, over 13 percent for the year. While we

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cannot predict the exact path of interest rates in the new year, we would expect a larger invested asset base and wider credit spreads to be supportive of tempered increases in investment income.

The Federal Reserve and corresponding monetary policy continues to weigh heavily on markets as higher rates are now having an impact on housing and other rate sensitive parts of the economy. Participants’ concern centers on the regularity of five consecutive quarterly Fed Funds increases through December 2018, and whether the new chairman is on a linear forward path. Additionally, in the years following the financial crisis the Fed’s balance sheet was used to purchase securities as part of a quantitative easing program. That blunt procedure is now in reverse and the economic impact of quantitative tightening is not exceedingly clear. While monetary policy should react to the 2019 macroeconomic data, the mixed signals that accompany the later stages of the economic cycle make the Fed’s objective all the more challenging.

We would expect a modest uplift in treasury yields over a portion of the new year, albeit capped by a more shallow growth trajectory, nascent inflation expectations and a demographically-driven demand for interest rate sensitive sectors. Should wage pressure accelerate, we may experience pass through pricing pressure and / or corporate margin compression, both of which would be a headwind. The differential in long-term versus short-term yields will likely remain very narrow over the course of 2019, which will allow an opportunity to adjust yield curve exposure without a degradation of potential income.

As asset prices and credit spreads were under pressure in the later stages of 2018, the starting point for the new year contains some cushion in both lower valuations and higher risk premia. While this raises the probability of positive total return results for 2019, we shall remain vigilant to our long-standing risk management practices focused on diversification and regular rebalancing. Our invested asset base has been a consistent support to RLI’s insurance operations through investment income and remains an important component of our long-term growth in book value.

PROSPECTIVE ACCOUNTING STANDARDS

Prospective accounting standards are those which we have not implemented because the implementation date has not yet occurred. For a discussion of relevant prospective accounting standards, see note 1.D. to the consolidated financial statements within Item 8, Financial Statements and Supplementary Data.

Item 7A.Quantitative and Qualitative Disclosures About Market Risk

MARKET RISK DISCLOSURE

Market risk is a general term describing the potential economic loss associated with adverse changes in the fair value of financial instruments. Management of market risk is a critical component of our investment decisions and objectives. We manage our exposure to market risk by using the following tools:

· Monitoring the fair value of all financial assets on a constant basis,

· Changing the character of future investment purchases as needed and

· Maintaining a balance between existing asset and liability portfolios.

FIXED INCOME AND INTEREST RATE RISK

The most significant short-term influence on our fixed income portfolio is a change in interest rates. Because there is intrinsic difficulty predicting the direction and magnitude of interest rate moves, we attempt to minimize the impact of interest rate risk on the balance sheet by matching the duration of assets to that of our liabilities. Furthermore, the diversification of sectors and given issuers is core to our risk management process, increasing the granularity of individual credit risk. Liquidity and call risk are elements of fixed income that we regularly evaluate to ensure we are receiving adequate compensation. Our fixed income portfolio has a meaningful impact on financial results and is a key component in our enterprise risk simulations.

Interest rate risk can also affect our income statement due to its impact on interest expense. As of December 31, 2018 and 2017, we had no short-term debt obligations. We maintain a debt obligation that is long-term in nature and carries a fixed interest rate. As such, our interest expense on this obligation is not subject to changes in interest rates. As this debt is not due until 2023, we will not assume additional interest rate risk in our ability to refinance this debt for more than four years.

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EQUITY PRICE RISK

Equity price risk is the potential that we will incur economic loss due to the decline of common stock prices. Beta analysis is used to measure the sensitivity of our equity portfolio to changes in the value of the S&P 500 Index (an index representative of the broad equity market). Our current equity portfolio has a beta of 0.9in comparison to the S&P 500 with a beta of 1.0. This lower beta statistic reflects our long-term emphasis on maintaining a value-oriented, dividend-driven investment philosophy for our equity portfolio.

SENSITIVITY ANALYSIS

The tables that follow detail information on the market risk exposure for our financial investments as of December 31, 2018. Listed on each table is the December 31, 2018 fair value for our assets and the expected pretax reduction in fair value given the stated hypothetical events. This sensitivity analysis assumes the composition of our assets remains constant over the period being measured and also assumes interest rate changes are reflected uniformly across the yield curve. For example, our ability to hold non-trading securities to maturity mitigates price fluctuation risks. For purposes of this disclosure, market-risk-sensitive instruments are all classified as held for non-trading purposes, as we do not hold any trading securities. The examples given are not predictions of future market events, but rather illustrations of the effect such events may have on the fair value of our investment portfolio.

As of December 31, 2018, our fixed income portfolio had a fair value of $1.8 billion. The sensitivity analysis uses scenarios of interest rates increasing 100 and 200 basis points from their December 31, 2018, levels with all other variables held constant. Such scenarios would result in modeled decreases in the fair value of the fixed income portfolio of $63.2 million and $118.6 million, respectively.

As of December 31, 2018, our equity portfolio had a fair value of $340.5 million. The base sensitivity analysis uses market scenarios of the S&P 500 Index declining both 10 percent and 20 percent. These scenarios would result in approximate decreases in the equity fair value of $29.3 million and $58.5 million, respectively.

While the declines in market value outlined below are modeled as instantaneous changes, we would expect movements in capital markets to occur over time, with investment income offering an offset to any decrease in prices.

Under the assumptions of rising interest rates and a decreasing S&P 500 Index, the fair value of our assets will decrease from their present levels by the indicated amounts.

Effect of a 100-basis-point increase in interest rates and a 10 percent decline in the S&P 500:

	12/31/18 Fair		Interest		Equity
(in thousands)	Value		Rate Risk		Risk
Held for non-trading purposes:
Fixed income securities	$	1,760,515	$	(63,168)	$	—
Equity securities		340,483		—		(29,259)
Total non-trading	$	2,100,998	$	(63,168)	$	(29,259)

Effect of a 200-basis-point increase in interest rates and a 20 percent decline in the S&P 500:

	12/31/18 Fair		Interest		Equity
(in thousands)	Value		Rate Risk		Risk
Held for non-trading purposes:
Fixed income securities	$	1,760,515	$	(118,622)	$	—
Equity securities		340,483		—		(58,519)
Total non-trading	$	2,100,998	$	(118,622)	$	(58,519)

Comparatively, under the assumptions of falling interest rates and an increasing S&P 500 Index, the fair value of our assets will increase from their present levels by the indicated amounts.

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Effect of a 100-basis-point decrease in interest rates and a 10 percent increase in the S&P 500:

	12/31/18 Fair		Interest		Equity
(in thousands)	Value		Rate Risk		Risk
Held for non-trading purposes:
Fixed income securities	$	1,760,515	$	65,232	$	—
Equity securities		340,483		—		29,259
Total non-trading	$	2,100,998	$	65,232	$	29,259

Effect of a 200-basis-point decrease in interest rates and 20 percent increase in the S&P 500:

	12/31/18 Fair		Interest		Equity
(in thousands)	Value		Rate Risk		Risk
Held for non-trading purposes:
Fixed income securities	$	1,760,515	$	135,752	$	—
Equity securities		340,483		—		58,519
Total non-trading	$	2,100,998	$	135,752	$	58,519

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Item 8.Financial Statements and Supplementary Data

Index to Financial Statements	Page
Consolidated Balance Sheets	64
Consolidated Statements of Earnings and Comprehensive Earnings	65
Consolidated Statements of Shareholders’ Equity	66
Consolidated Statements of Cash Flows	67
Notes to Consolidated Financial Statements	68-107
Report of Independent Registered Public Accounting Firm	108

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Consolidated Balance Sheets

	December 31,
(in thousands, except per share data)	2018		2017
Assets
Investments and Cash:
Fixed income:
Available-for-sale, at fair value (amortized cost - $1,776,465 in 2018 and $1,646,411 in 2017)	$	1,760,515	$	1,672,239
Equity securities, at fair value (cost - $220,373 in 2018 and $182,002 in 2017)		340,483		400,492
Short-term investments, at cost which approximates fair value		11,550		9,980
Other invested assets		51,542		33,808
Cash		30,140		24,271
Total investments and cash	$	2,194,230	$	2,140,790
Accrued investment income	$	14,033	$	15,166
Premiums and reinsurance balances receivable, net of allowances for uncollectible amounts of $16,967 in 2018 and $16,935 in 2017		152,576		134,351
Ceded unearned premiums		71,174		57,928
Reinsurance balances recoverable on unpaid losses and settlement expenses, net of allowances for uncollectible amounts of $9,793 in 2018 and $10,014 in 2017		364,999		301,991
Deferred policy acquisition costs, net		84,934		77,716
Property and equipment, at cost, net of accumulated depreciation of $54,275 in 2018 and $47,676 in 2017		54,692		55,849
Investment in unconsolidated investees		94,967		90,067
Goodwill and intangibles		54,534		59,302
Other assets		18,926		14,084
Total assets	$	3,105,065	$	2,947,244
Liabilities and Shareholders’ Equity
Liabilities:
Unpaid losses and settlement expenses	$	1,461,348	$	1,271,503
Unearned premiums		496,505		451,449
Reinsurance balances payable		22,591		21,624
Funds held		72,309		74,560
Income taxes - deferred		24,238		53,768
Bonds payable, long-term debt		149,115		148,928
Accrued expenses		45,124		52,848
Other liabilities		26,993		18,966
Total liabilities	$	2,298,223	$	2,093,646
Shareholders’ equity:
Common stock ($0.01 par value in 2018 and $1.00 par value in 2017)
(100,000,000 share authorized, 67,434,257 shares issued and 44,504,043 shares outstanding in 2018)
(100,000,000 share authorized, 67,078,569 shares issued and 44,148,355 shares outstanding in 2017)	$	674	$	67,079
Paid-in capital		305,660		233,077
Accumulated other comprehensive earnings, net of tax		(14,572)		157,919
Retained earnings		908,079		788,522
Deferred compensation		8,354		8,640
Treasury stock, at cost (22,930,214 shares in 2018 and 2017)		(401,353)		(401,639)
Total shareholders’ equity	$	806,842	$	853,598
Total liabilities and shareholders’ equity	$	3,105,065	$	2,947,244

See accompanying notes to consolidated financial statements.

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Consolidated Statements of Earnings and Comprehensive Earnings

	Years ended December 31,
(in thousands, except per share data)	2018		2017		2016
Net premiums earned	$	791,366	$	737,937	$	728,608
Net investment income		62,085		54,876		53,075
Net realized gains		63,624		6,970		34,740
Other-than-temporary-impairment losses on investments		(217)		(2,559)		(95)
Net unrealized losses on equity securities		(98,735)		—		—
Consolidated revenue	$	818,123	$	797,224	$	816,328
Losses and settlement expenses	$	428,193	$	401,584	$	349,778
Policy acquisition costs		267,738		252,515		249,612
Insurance operating expenses		53,803		56,994		53,093
Interest expense on debt		7,437		7,426		7,426
General corporate expenses		9,427		11,340		10,170
Total expenses	$	766,598	$	729,859	$	670,079
Equity in earnings of unconsolidated investees		16,056		17,224		10,833
Earnings before income taxes	$	67,581	$	84,589	$	157,082
Income tax expense (benefit):
Current	$	23,917	$	9,302	$	41,034
Deferred		(20,515)		(29,741)		1,128
Income tax expense (benefit):	$	3,402	$	(20,439)	$	42,162
Net earnings	$	64,179	$	105,028	$	114,920
Other comprehensive earnings (loss), net of tax		(33,997)		35,309		(1,164)
Comprehensive earnings	$	30,182	$	140,337	$	113,756
Basic:
Net earnings per share	$	1.45	$	2.39	$	2.63
Comprehensive earnings per share	$	0.68	$	3.19	$	2.60
Diluted:
Net earnings per share	$	1.43	$	2.36	$	2.59
Comprehensive earnings per share	$	0.67	$	3.15	$	2.56
Weighted average number of common shares outstanding
Basic		44,358		44,033		43,772
Diluted		44,835		44,500		44,432

See accompanying notes to consolidated financial statements.

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Consolidated Statements of Shareholders’ Equity

								Accumulated
		Total						Other
	Common	Shareholders’		Common		Paid-in		Comprehensive		Retained		Deferred		Treasury Stock
(in thousands, except per share data)	Shares	Equity		Stock		Capital		Earnings (Loss)		Earnings		Compensation		at Cost
Balance, January 1, 2016	43,544,128	$	823,469	$	66,474	$	221,345	$	123,774	$	804,875	$	10,647	$	(403,646)
Net earnings	—	$	114,920	$	—	$	—	$	—	$	114,920	$	—	$	—
Other comprehensive earnings (loss), net of tax	—		(1,164)		—		—		(1,164)		—		—		—
Deferred compensation under Rabbi trust plans	—		—		—		—		—		—		849		(849)
Stock option excess tax benefit	—		9,576		—		9,576		—		—		—		—
Share-based compensation	400,569		(741)		401		(1,142)		—		—		—		—
Dividends and dividend equivalents ($2.79 per share)	—		(122,488)		—		—		—		(122,488)		—		—
Balance, December 31, 2016	43,944,697	$	823,572	$	66,875	$	229,779	$	122,610	$	797,307	$	11,496	$	(404,495)
Net earnings	—	$	105,028	$	—	$	—	$	—	$	105,028	$	—	$	—
Other comprehensive earnings (loss), net of tax	—		35,309		—		—		35,309		—		—		—
Deferred compensation under Rabbi trust plans	—		—		—		—		—		—		(2,856)		2,856
Stock option excess tax benefit	—		—		—		—		—		—		—		—
Share-based compensation	203,658		3,502		204		3,298		—		—		—		—
Dividends and dividend equivalents ($2.58 per share)	—		(113,813)		—		—		—		(113,813)		—		—
Balance, December 31, 2017	44,148,355	$	853,598	$	67,079	$	233,077	$	157,919	$	788,522	$	8,640	$	(401,639)
Cumulative-effect adjustment from ASU 2016-01 and 2018-02	—	$	86	$	—	$	—	$	(138,494)	$	138,580	$	—	$	—
Par value conversion from $1.00 per share to $0.01 per share	—		—		(66,409)		66,409		—		—		—		—
Net earnings	—		64,179		—		—		—		64,179		—		—
Other comprehensive earnings (loss), net of tax	—		(33,997)		—		—		(33,997)		—		—		—
Deferred compensation under Rabbi trust plans	—		—		—		—		—		—		(286)		286
Stock option excess tax benefit	—		—		—		—		—		—		—		—
Share-based compensation	355,688		6,178		4		6,174		—		—		—		—
Dividends and dividend equivalents ($1.87 per share)	—		(83,202)		—		—		—		(83,202)		—		—
Balance, December 31, 2018	44,504,043	$	806,842	$	674	$	305,660	$	(14,572)	$	908,079	$	8,354	$	(401,353)

See accompanying notes to consolidated financial statements.

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Consolidated Statements of Cash Flows

(in thousands)	2018		2017		2016
Cash flows from operating activities:
Net earnings	$	64,179	$	105,028	$	114,920
Adjustments to reconcile net earnings to net cash provided by operating activities:
Net realized gains		(63,407)		(4,411)		(34,645)
Net unrealized losses on equity securities		98,735		—		—
Depreciation		7,042		6,944		6,430
Other items, net		6,171		16,368		17,699
Change in:
Accrued investment income		1,132		(573)		285
Premiums and reinsurance balances receivable (net of direct write-offs and commutations)		(18,225)		(7,964)		17,275
Reinsurance balances payable		967		3,696		(19,628)
Funds held		(2,251)		1,818		18,488
Ceded unearned premium		(13,246)		(5,755)		660
Reinsurance balances recoverable on unpaid losses		(63,008)		(13,767)		9,620
Deferred policy acquisition costs		(7,218)		(4,569)		(3,318)
Accrued expenses		(7,724)		856		(3,750)
Unpaid losses and settlement expenses		189,845		132,166		35,552
Unearned premiums		45,056		17,672		11,683
Income taxes:
Current		5,725		(3,019)		12,573
Deferred		(20,515)		(29,741)		1,128
Stock option excess tax benefit		—		—		(9,576)
Changes in investment in unconsolidated investees:
Undistributed earnings		(16,056)		(17,224)		(10,833)
Dividends received		9,900		—		9,900
Net cash provided by operating activities	$	217,102	$	197,525	$	174,463
Cash flows from investing activities:
Purchase of:
Fixed income, available-for-sale	$	(725,675)	$	(430,727)	$	(557,067)
Equity securities		(115,921)		(20,719)		(36,335)
Short-term investments, net		(1,570)		(4,965)		—
Property and equipment		(6,087)		(9,238)		(16,155)
Acquisition of agency		—		—		(850)
Other		(18,754)		(19,112)		(7,722)
Proceeds from sale of:
Fixed income, available-for-sale		395,019		168,760		329,091
Equity securities		147,838		36,573		89,909
Short-term investments, net		—		—		2,564
Property and equipment		167		128		1,688
Subsidiary or agency		—		408		—
Other		3,394		2,063		—
Proceeds from call or maturity of:
Fixed income, available-for-sale		187,380		195,617		141,255
Net cash used in investing activities	$	(134,209)	$	(81,212)	$	(53,622)
Cash flows from financing activities:
Stock option excess tax benefit	$	—	$	—	$	9,576
Proceeds from stock option exercises		6,076		3,502		(741)
Cash dividends paid		(83,100)		(113,813)		(122,488)
Net cash used in financing activities	$	(77,024)	$	(110,311)	$	(113,653)
Net increase in cash	$	5,869	$	6,002	$	7,188
Cash at beginning of year	$	24,271	$	18,269	$	11,081
Cash at end of year	$	30,140	$	24,271	$	18,269

See accompanying notes to consolidated financial statements.

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Notes to Consolidated Financial Statements

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

A.DESCRIPTION OF BUSINESS

RLI Corp. (the “Company”) is an insurance holding company that was founded in 1965. On May 4, 2018, RLI Corp. changed its state of incorporation from the State of Illinois to the State of Delaware (the “Reincorporation”). The Reincorporation was effected by merging RLI Corp., an Illinois corporation (“RLI Illinois”) into RLI Corp., a Delaware corporation (“RLI Delaware”). The separate corporate existence of RLI Illinois ceased and RLI Delaware continues in existence as the surviving corporation and possesses all rights, privileges, powers and franchises of RLI Illinois. The Reincorporation did not result in any change in the name, business, management, fiscal year, location of the principal executive offices, assets or liabilities of the Company. Each outstanding share of RLI Illinois common stock, which had a par value of $1.00 per share, was automatically converted into one outstanding share of RLI Delaware common stock, with a par value of $0.01 per share. In order to reflect the new par value of common stock on the balance sheet, a $66.4 million reclassification from common stock to paid-in-capital was made. For more information on the Reincorporation, see RLI Corp.’s Form 8-K filed on May 7, 2018.

We underwrite select property and casualty insurance coverages through major subsidiaries collectively known as RLI Insurance Group. We conduct operations principally through three insurance companies. RLI Insurance Company (RLI Ins.), a subsidiary of RLI Corp. and our principal insurance subsidiary, writes multiple lines of insurance on an admitted basis in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands and Guam. Mt. Hawley Insurance Company (Mt. Hawley), a subsidiary of RLI Ins., writes surplus lines insurance on a non-admitted basis in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands and Guam. Contractors Bonding and Insurance Company (CBIC), a subsidiary of RLI Ins., writes multiple lines of insurance on an admitted basis in all 50 states and the District of Columbia.

B.PRINCIPLES OF CONSOLIDATION AND BASIS OF PRESENTATION

The accompanying consolidated financial statements were prepared in conformity with generally accepted accounting principles in the United States of America (GAAP), which differ in some respects from those followed in reports to insurance regulatory authorities. The consolidated financial statements include the accounts of our holding company and our subsidiaries. All significant intercompany balances and transactions have been eliminated. Certain reclassifications were made to 2017 and 2016 to conform to the classifications used in the current year. The Company has evaluated subsequent events through the date these consolidated financial statements were issued. There were no subsequent events requiring adjustment to the financial statements or disclosure.

C.ADOPTED ACCOUNTING STANDARDS

ASU 2014-09, Revenue from Contracts with Customers (Topic 606)

ASU 2014-09 was issued to clarify and remove inconsistencies within revenue recognition requirements. The core principle of the update is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, the transaction price for a contract is allocated among separately identifiable performance obligations and a portion of the transaction price is recognized as revenue when the associated performance obligation has been completed or transferred to the customer. All contracts and fulfillment activities within the scope of Topic 944, Financial Services – Insurance, investment income, investment-related gains and losses and equity in earnings of unconsolidated investees are outside the scope of this ASU.

We adopted ASU 2014-09 on January 1, 2018. However, nearly all (over 99 percent) of our consolidated revenue is scoped out and therefore exempt from the guidance contained within this ASU. For the remaining portion, the revenue recognition policy we utilize aligns with the new guidance and there were no changes to the way we recognize revenue. Although the recognition of earnings from equity method investees is out of scope from the update, the recognition of revenue by our equity method investees would be subject to the new guidance if the revenue streams are within this update’s scope. Any impact on revenues would affect the net income of each of the equity method investees, upon which we calculate our portion of earnings to recognize. Our equity method investees are private companies and this guidance becomes effective for private companies in periods beginning after December 15, 2018. As a result, their earnings and our portion of those earnings

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are not impacted in 2018. We expect that revenue generated by both of our equity method investees will either be outside the scope of this update or largely unaffected by the changes.

ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities

This ASU was issued to improve the recognition and measurement of financial instruments. The new guidance makes targeted improvements to GAAP as follows:

a.Requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net earnings,

b.Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment,

c.Eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet,

d.Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes,

e.Requires an entity to present separately in other comprehensive earnings the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments,

f.Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and

g.Clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets.

We adopted ASU 2016-01 on January 1, 2018. A cumulative-effect adjustment to the balance sheet was made as of the beginning of the year, which moved $142.2 million of net unrealized gains and losses on equity securities from accumulated other comprehensive earnings to retained earnings. During 2018, we recognized $98.7 million of unrealized losses on equity securities within net earnings and $20.7 million of income tax benefit. This compares to $24.0 million and $5.6 million of unrealized gains on equity securities, net of tax, that were recognized through other comprehensive earnings for the comparable periods in 2017 and 2016, respectively. The future impact to our net earnings will vary depending upon the level of volatility in the performance of the securities held in our equity portfolio and the overall market. There were no other material impacts to the financial statements.

ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments

ASU 2016-15 was issued to reduce the diversity in practice of how certain cash receipts and payments, for which previous guidance was silent, are classified in the statement of cash flows. The update addresses eight specific issues, including contingent consideration payments made after a business combination, distributions received from equity method investees and the classification of cash receipts and payments that have aspects of more than one class of cash flows. We adopted ASU 2016-15 on January 1, 2018. The adoption did not have a material impact on our statement of cash flows.

ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income

ASU 2018-02 was issued as a result of the enactment of the Tax Cuts and Jobs Act of 2017 (TCJA) on December 22, 2017. Accounting guidance required deferred tax items to be revalued based on the new tax laws (the most significant of which reduced the corporate tax rate to 21 percent from 35 percent) with the change included in income from continuing operations. Since other comprehensive income was not affected by the revaluation of the deferred tax items, the net accumulated other comprehensive income (AOCI) balance was reflective of the historic 35 percent tax rate instead of the newly enacted rate, a difference that is referred to as a stranded tax effect. This ASU allows for the option to reclassify the stranded tax effects resulting from the implementation of the TCJA out of AOCI and into retained earnings. ASU 2018-02 does not replace the guidance requiring changes from the enactment of other tax laws or rates to be included within income from continuing operations and is applicable only to changes from the TCJA.

We adopted ASU 2018-02 during the first quarter of 2018. A current period adjustment was made to the balance sheet, which moved $3.7 million of stranded tax effects on the unrealized balances of our fixed income securities and equity method investees from accumulated other comprehensive earnings to retained earnings. The entire unrealized balance on equity

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securities was reclassified from AOCI into retained earnings from the adoption of ASU 2016-01 on January 1, 2018 and was therefore unaffected by this ASU. As there was no impact to net earnings and the balance sheet effect is limited to a reclassification within the equity section, there was not a material impact on our financial statements.

D.PROSPECTIVE ACCOUNTING STANDARDS

ASU 2016-02, Leases (Topic 842)

ASU 2016-02 was issued to improve the financial reporting of leasing transactions. Under current guidance for lessees, leases are only included on the balance sheet if certain criteria, classifying the agreement as a capital lease, are met. This update will require the recognition of a right-of-use asset and a corresponding lease liability, discounted to the present value, for all leases that extend beyond 12 months. For operating leases, the asset and liability will be amortized over the lease term on a straight-line basis, with all cash flows included in the operating section of the statement of cash flows. For finance leases, interest on the lease liability will be recognized separately from the amortization of the right-of-use asset in the statement of comprehensive income and the repayment of the principal portion of the lease liability will be classified as a financing activity while the interest component will be included in the operating section of the statement of cash flows.

This ASU is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. ASU 2018-10, Codification Improvements to Topic 842, Leases was issued to clarify certain aspects of ASU 2016-02 and the two updates will be adopted concurrently. ASU 2016-02 requires leases to be recognized and measured at the beginning of the earliest period presented using a modified retrospective approach upon adoption. However, ASU 2018-11, Leases (Topic 842): Targeted Improvements provides an alternative transition method by which leases are recognized at the date of adoption and a cumulative-effect adjustment to the opening balance of retained earnings is recognized in the period of adoption. We plan to adopt using this alternative. It is expected that total assets and total liabilities will increase by approximately $25 million to $30 million upon implementation and the adoption of this update will not have a material impact on net earnings.

ASU 2016-13, Financial Instruments – Credit Losses (Topic 326)

ASU 2016-13 was issued to provide more decision-useful information about the expected credit losses on financial instruments. Current GAAP delays the recognition of credit losses until it is probable a loss has been incurred. The update will require a financial asset measured at amortized cost, including reinsurance balances recoverable, to be presented at the net amount expected to be collected by means of an allowance for credit losses that runs through net earnings. Credit losses relating to available-for-sale debt securities will also be recorded through an allowance for credit losses. However, the amendments would limit the amount of the allowance to the amount by which fair value is below amortized cost. The measurement of credit losses on available-for-sale securities is similar under current GAAP, but the update requires the use of the allowance account through which amounts can be reversed, rather than through an irreversible write-down.

This ASU is effective for annual and interim reporting periods beginning after December 15, 2019. Early adoption is permitted beginning after December 15, 2018. Upon adoption, the update will be applied using the modified-retrospective approach, by which a cumulative-effect adjustment will be made to retained earnings as of the beginning of the first reporting period presented. This update will have the most impact on our available-for-sale fixed income portfolio and reinsurance balances recoverable. However, as our fixed income portfolio is weighted towards higher rated bond (84 percent rated A or better at December 31, 2018) and we purchase reinsurance from financially strong reinsurers for which we already have an allowance for uncollectible reinsurance amounts, we do not expect that the effect of adoption will be material.

ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities

Under current practices, the amortization period for callable debt securities held at a premium is generally the contractual life of the instrument. However, if an entity has a large number of similar loans, it may consider estimates of future principal prepayments. For those who choose to not incorporate an estimate of future prepayments, ASU 2017-08 shortens the amortization period for premium on debt securities to the earliest call date, rather than the maturity date, to align the amortization method with how the securities are quoted, priced and traded. After the earliest call date, if the call option is not exercised, the entity shall reset the effective yield using the payment terms of the debt security. Any excess of the amortized cost basis over the amount payable will be amortized to the next call date or to maturity if there are no other call dates. The method of accounting for a discount does not change and will continue to be amortized over the life of the bond.

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This ASU is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. The update will be applied using a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. As we currently incorporate estimates of future principal prepayments when calculating the effective yield for bonds carrying a premium, we do not expect the adoption of this update to have a material impact on our financial statements.

ASU 2018-07, Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting

ASU 2018-07 was issued to simplify the accounting for share-based transactions by expanding the scope of Topic 718 from only being applicable to share-based payments to employees to also include share-based payment transactions for acquiring goods and services from nonemployees. As a result, nonemployee share-based transactions will be measured by estimating the fair value of the equity instruments at the grant date, taking into consideration the probability of satisfying performance conditions. This ASU is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. Our long-term incentive plan limits the awards of share-based payments to employees and directors of the Company or any affiliate. The share-based compensation expense to nonemployee directors was $0.3 million in 2018. Costs associated with such payments are not expected to materially increase and we do not expect this update to have a material impact on our financial statements.

ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement

ASU 2018-13 modifies the disclosure requirements for assets and liabilities measured at fair value. The requirements to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timing of transfers between levels and the valuation processes for Level 3 fair value measurements have all been removed. However, the changes in unrealized gains and losses included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period must be disclosed along with the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements (or other quantitative information if it is more reasonable). Finally, for investments measured at net asset value, the requirements have been modified so that the timing of liquidation and the date when restrictions from redemption might lapse are only disclosed if the investee has communicated the timing to the entity or announced the timing publicly.

This ASU is effective for annual and interim reporting periods beginning after December 15, 2019. As the amendments are only disclosure-related and we do not currently have any assets or liabilities that are measured based on Level 3 inputs, our financial statements will not be materially impacted by this update.

ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract

ASU 2018-15 requires a customer in a cloud computing arrangement (i.e. hosting arrangement) that is a service contract to follow the internal-use software guidance to determine which implementation costs to capitalize as assets or expense as incurred. Relevant implementation costs in the development stage are capitalized, while costs incurred during the preliminary project and post-implementation stages are expensed as the activities are performed. Capitalized costs are expensed over the term of the hosting arrangement. This ASU is effective for annual and interim reporting periods beginning after December 15, 2019. Early adoption is permitted. This update can either be applied retrospectively or prospectively to all implementation costs incurred after the date of adoption. We have not yet completed the analysis of how adopting this ASU will affect our financial statements.

E. INVESTMENTS:

Equity securities are carried at fair value with unrealized gains and losses recorded within net earnings in 2018. Prior to 2018, unrealized gains and losses on equity securities were recognized through other comprehensive earnings. We classify our investments in fixed income securities into one of three categories: trading, held-to-maturity or available-for-sale.

AVAILABLE-FOR-SALE SECURITIES

Debt securities not included as held-to-maturity or trading are classified as available-for-sale and reported at fair value. Unrealized gains and losses on these securities are excluded from net earnings but are recorded as a separate component of

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comprehensive earnings and shareholders’ equity, net of deferred income taxes. All of our debt securities are classified as available-for-sale.

HELD-TO-MATURITY SECURITIES

Debt securities that we have the positive intent and ability to hold to maturity are classified as held-to-maturity and carried at amortized cost. Except for declines that are other-than-temporary, changes in the fair value of these securities are not reflected in the financial statements. We do not hold any debt security classified as held-to-maturity.

TRADING SECURITIES

Debt securities purchased for short-term resale are classified as trading securities. These securities are reported at fair value with unrealized gains and losses included in earnings. We do not hold any debt securities classified as trading.

OTHER THAN TEMPORARY IMPAIRMENT

We regularly evaluate our fixed income securities using quantitative and qualitative criteria to determine impairment losses for other-than-temporary declines in the fair value of the investments. The following are the key factors for determining if a security is other-than-temporarily impaired:

· The length of time and the extent to which the fair value has been less than amortized cost,

· The probability of significant adverse changes to the cash flows,

· The occurrence of a discrete credit event resulting in the issuer defaulting on a material obligation, the issuer seeking protection from creditors under the bankruptcy laws, the issuer proposing a voluntary reorganization under which creditors are asked to exchange their claims for cash or securities having a fair value substantially lower than par value of their claims or

· The probability that we will recover the entire amortized cost basis of our fixed income securities prior to maturity.

Quantitative criteria considered during this process include, but are not limited to: the degree and duration of current fair value as compared to the amortized cost of the security, degree and duration of the security’s fair value being below cost and whether the issuer is in compliance with terms and covenants of the security. Qualitative criteria include the credit quality, current economic conditions, the anticipated speed of cost recovery, the financial health of and specific prospects for the issuer, as well as our absence of intent to sell or requirement to sell fixed income securities prior to recovery. In addition, we consider price declines in our other-than-temporary impairment (OTTI) analysis when they provide evidence of declining credit quality, and we distinguish between price changes caused by credit deterioration, as opposed to rising interest rates. See note 2 for further discussion of OTTI.

Interest on fixed maturities and short-term investments is credited to earnings on an accrual basis. Premiums and discounts are amortized or accreted over the lives of the related fixed maturities. Dividends on equity securities are credited to earnings on the ex-dividend date. Realized gains and losses on disposition of investments are based on specific identification of the investments sold on the settlement date.

F.CASH, SHORT-TERM INVESTMENTS AND OTHER INVESTED ASSETS

Cash consists of uninvested balances in bank accounts. Short-term investments consist of investments with original maturities of 90 days or less, primarily AAA-rated prime and government money market funds. Short-term investments are carried at cost. We have not experienced losses on these instruments. Other invested assets include investments in low income housing tax credit partnerships (LIHTC), membership in the Federal Home Loan Bank of Chicago (FHLBC) and investments in private funds. Our LIHTC investments are carried at amortized cost, and our investment in FHLBC stock is carried at cost. Due to the nature of cash, short-term investments, the LIHTC and our membership in the FHLBC, their carrying amounts approximate fair value. The private funds are carried at fair value, using each investment’s net asset value.

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G.REINSURANCE

Ceded unearned premiums and reinsurance balances recoverable on paid and unpaid losses and settlement expenses are reported separately as assets, instead of being netted with the related liabilities, since reinsurance does not relieve the Company of our legal liability to our policyholders.

We continuously monitor the financial condition of our reinsurers. As part of our monitoring efforts, we review their annual financial statements, quarterly disclosures and Securities and Exchange Commission (SEC) filings for reinsurers that are publicly traded. We also review insurance industry developments that may impact the financial condition of our reinsurers. We analyze the credit risk associated with our reinsurance balances recoverable by monitoring the A.M. Best and Standard & Poor’s (S&P) ratings of our reinsurers. In addition, we subject our reinsurance recoverables to detailed recoverable tests, including one based on average default by S&P rating. Based upon our review and testing, our policy is to charge to earnings, in the form of an allowance, an estimate of unrecoverable amounts from reinsurers. This allowance is reviewed on an ongoing basis to ensure that the amount makes a reasonable provision for reinsurance balances that we may be unable to recover.

H.POLICY ACQUISITION COSTS

We defer incremental direct costs that relate to the successful acquisition of new or renewal insurance contracts, including commissions and premium taxes. Acquisition-related costs may be deemed ineligible for deferral when they are based on contingent or performance criteria beyond the basic acquisition of the insurance contract or when efforts to obtain or renew the insurance contract are unsuccessful. All eligible costs are capitalized and charged to expense in proportion to premium revenue recognized. The method followed in computing deferred policy acquisition costs limits the amount of such deferred costs to their estimated realizable value. This would also give effect to the premiums to be earned and anticipated losses and settlement expenses, as well as certain other costs expected to be incurred as the premiums are earned. Judgments as to the ultimate recoverability of such deferred costs are reviewed on a segment basis and are highly dependent upon estimated future loss costs associated with the premiums written. This deferral methodology applies to both gross and ceded premiums and acquisition costs.

I.PROPERTY AND EQUIPMENT

Property and equipment are presented at cost less accumulated depreciation and are depreciated on a straight-line basis for financial statement purposes over periods ranging from 3 to 10 years for equipment and up to 30 years for buildings and improvements.

J.INVESTMENT IN UNCONSOLIDATED INVESTEES

We maintain a 40 percent interest in the equity and earnings of Maui Jim, Inc. (Maui Jim), a manufacturer of high-quality sunglasses, which is accounted for under the equity method. We also maintain a similar minority representation on their board of directors. Maui Jim’s chief executive officer owns a controlling majority of the outstanding shares of Maui Jim. We carry this investment at the holding company level as it is not core to our insurance operations. Our investment in Maui Jim was $79.5 million in 2018 and $77.7 million in 2017. In 2018, we recorded $12.5 million in investee earnings for Maui Jim, compared to $14.4 million in 2017 and $9.7 million in 2016. Maui Jim recorded net income of $30.3 million in 2018, $34.4 million in 2017 and $26.9 million in 2016. Additional summarized financial information for Maui Jim for 2018 and 2017 is outlined in the following table:

(in millions)	2018		2017
Total assets	$	265.6	$	259.4
Total liabilities		90.4		88.0
Total equity		175.2		171.4

Approximately $68.9 million of undistributed earnings from Maui Jim are included in our retained earnings as of December 31, 2018. We received dividends of $9.9 million from Maui Jim in 2018 and 2016. No dividends were received in 2017.

As of December 31, 2018, we had a 23 percent interest in the equity and earnings of Prime Holdings Insurance Services, Inc. (Prime), which is accounted for under the equity method. Prime writes business through two Illinois domiciled insurance carriers, Prime Insurance Company, an excess and surplus lines company, and Prime Property and Casualty Insurance Inc., an admitted insurance company. Our investment in Prime was $15.4 million at December 31, 2018 and $12.4 million at December

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31, 2017. In 2018, we recorded $3.6 million in investee earnings for Prime, compared to $2.8 million in 2017 and $1.1 million in 2016. Additionally, we maintain a 25 percent quota share reinsurance treaty with Prime, which contributed $41.1 million of gross premiums written and $34.2 million of net premiums earned during 2018, compared to $29.6 million of gross premiums written and $21.0 million of net premiums earned during 2017 and $13.4 million of gross premiums written and $11.4 million of net premiums earned during 2016.

We perform annual impairment reviews of our investments in unconsolidated investees, which take into consideration current valuation and operating results. Based upon the most recent reviews, the assets were not impaired.

K.INTANGIBLE ASSETS

Goodwill and intangibles totaled $54.5 million and $59.3 million at December 31, 2018 and 2017, respectively, as detailed in the following table.

Goodwill and Intangible Assets
(in thousands)		2018		2017
Goodwill
Energy surety	$	25,706	$	25,706
Miscellaneous and contract surety		15,110		15,110
Small Commercial		5,246		5,246
Medical professional liability *		-		3,595
Total goodwill	$	46,062	$	49,657
Intangibles
State insurance licenses	$	7,500	$	7,500
Definite-lived intangibles, net of accumulated amortization of $3,062 at 12/31/18 and $5,678 at 12/31/17		972		2,145
Total intangibles	$	8,472	$	9,645
Total goodwill and intangibles	$	54,534	$	59,302

*  The medical professional liability goodwill balance reflects a cumulative non-cash impairment charge of $12.4 million and $8.8 million as of December 31, 2018 and 2017, respectively.

As the amortization of goodwill and indefinite-lived intangible assets is not permitted, the assets are tested for impairment on an annual basis, or earlier if there is reason to suspect that their values may have been diminished or impaired. Annual impairment testing was performed on each of our goodwill and indefinite-lived intangible assets during 2018. Based upon these reviews, our energy surety goodwill, miscellaneous and contract surety goodwill, small commercial goodwill and state insurance license indefinite-lived intangible asset were not impaired. In addition, as of December 31, 2018, there were no triggering events on the above-mentioned goodwill and intangible assets that would suggest an updated review was necessary.

As previously disclosed, adverse loss experience triggered the need to test the medical professional liability reporting unit during the first quarter of 2018 and the second quarters of 2017 and 2016. The testing resulted in a $4.4 million non-cash impairment charge on goodwill and intangible assets in 2018, a $3.4 million non-cash impairment charge on goodwill and intangible assets in 2017 and a $7.2 million non-cash impairment charge on goodwill in 2016. In each instance, a fair value for the medical professional liability reporting unit’s agency relationships, carried as a definite-lived intangible asset, was determined by using a discounted cash flow valuation. In 2018, the carrying value exceeded the fair value, resulting in a $0.8 million non-cash impairment charge. In 2017, the resulting non-cash impairment charge on definite-lived intangibles was $1.8 million. A fair value for the medical professional liability reporting unit’s goodwill was determined by using a weighted average of a market approach and discounted cash flow valuation. The carrying value exceeded the fair value in each year, resulting in a $3.6 million non-cash impairment charge in 2018, a $1.6 million non-cash impairment charge during 2017 and a $7.2 million non-cash impairment charge in 2016. Subsequent to the 2018 impairment, the medical professional liability reporting unit had no remaining goodwill or intangible assets. All impairment charges were recorded as net realized losses in the respective period’s consolidated statement of earnings.

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The definite-lived intangible assets are amortized against future operating results based on their estimated useful lives. Amortization of intangible assets was $0.4 million, $0.7 million and $0.9 million for 2018, 2017 and 2016, respectively. We anticipate we will recognize amortization expense of $0.4 million in 2019 and 2020 and $0.1 million in 2021.

L.UNPAID LOSSES AND SETTLEMENT EXPENSES

The liability for unpaid losses and settlement expenses represents estimates of amounts needed to pay reported and unreported claims and related expenses. The estimates are based on certain actuarial and other assumptions related to the ultimate cost to settle such claims. Such assumptions are subject to occasional changes due to evolving economic, social and political conditions. All estimates are periodically reviewed and, as experience develops and new information becomes known, the reserves are adjusted as necessary. Such adjustments are reflected in the results of operations in the period in which they are determined. Due to the inherent uncertainty in estimating reserves for losses and settlement expenses, there can be no assurance that the ultimate liability will not exceed recorded amounts. If actual liabilities do exceed recorded amounts, there will be an adverse effect. Furthermore, we may determine that recorded reserves are more than adequate to cover expected losses, which would lead to a reduction in our reserves.

M.INSURANCE REVENUE RECOGNITION

Insurance premiums are recognized ratably over the term of the contracts, net of ceded reinsurance. Unearned premiums are calculated on a monthly pro rata basis.

N.INCOME TAXES

We file a consolidated federal income tax return. Federal income taxes are accounted for using the asset and liability method under which deferred income taxes are recognized for the tax consequences of temporary differences by applying enacted statutory tax rates applicable to future years to differences between the financial statement carrying amounts and the tax bases of existing assets and liabilities, operating losses and tax credit carry forwards. The effect on deferred taxes for a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance if it is more likely than not that all or some of the deferred tax assets will not be realized.

We consider uncertainties in income taxes and recognize those in our financial statements as required. As it relates to uncertainties in income taxes, our unrecognized tax benefits, including interest and penalty accruals, are not considered material to the consolidated financial statements. Also, no tax uncertainties are expected to result in significant increases or decreases to unrecognized tax benefits within the next 12-month period. Penalties and interest related to income tax uncertainties, should they occur, would be included in income tax expense in the period in which they are incurred.

As an insurance company, we are subject to minimal state income tax liabilities. On a state basis, since the majority of our income is from insurance operations, we pay premium taxes which are calculated as a percentage of gross premiums written in lieu of state income taxes. Premium taxes are a component of policy acquisition costs.

O.EARNINGS PER SHARE

Basic earnings per share (EPS) is computed by dividing income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the dilution that could occur if securities or other contracts to issue common stock or common stock equivalents were exercised or converted into common stock. When inclusion of these items increases the earnings per share or reduces the loss per share, the effect on earnings is anti-dilutive. Under these circumstances, the diluted net earnings or net loss per share is computed excluding these items.

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The following represents a reconciliation of the numerator and denominator of the basic and diluted EPS computations contained in the consolidated financial statements:

			Weighted Average
	Income		Shares	Per Share
(in thousands, except per share data)	(Numerator)		(Denominator)	Amount
For the year ended December 31, 2018
Basic EPS
Income available to common shareholders	$	64,179	44,358	$	1.45
Stock options		—	477
Diluted EPS
Income available to common shareholders and assumed conversions	$	64,179	44,835	$	1.43
For the year ended December 31, 2017
Basic EPS
Income available to common shareholders	$	105,028	44,033	$	2.39
Stock options		—	467
Diluted EPS
Income available to common shareholders and assumed conversions	$	105,028	44,500	$	2.36
For the year ended December 31, 2016
Basic EPS
Income available to common shareholders	$	114,920	43,772	$	2.63
Stock options		—	660
Diluted EPS
Income available to common shareholders and assumed conversions	$	114,920	44,432	$	2.59

P.COMPREHENSIVE EARNINGS

Our comprehensive earnings include net earnings plus after-tax unrealized gains and losses on our available-for-sale fixed income portfolio in 2018. In 2017 and 2016, after-tax unrealized gains and losses on our equity portfolio were also included. With the adoption of ASU 2016-01 on January 1, 2018, we began recognizing unrealized gains and losses on the equity portfolio through net income. See note 1.C for more information. In reporting the components of comprehensive earnings, we used the federal statutory tax rate of 21 percent in 2018 and 35 percent in 2017 and 2016. Other comprehensive income (loss), as shown in the consolidated statements of earnings and comprehensive earnings, is net of tax expense (benefit) of $(9.0) million, $19.0 million and $(0.6) million for 2018, 2017 and 2016, respectively.

The following table illustrates the changes in the balance of each component of accumulated other comprehensive earnings for each period presented in the consolidated financial statements. The 2016 and 2017 activity and balances include the net unrealized gain and loss activity on both fixed income and equity securities, while the 2018 activity and ending balance reflect only the net unrealized gain and loss activity on fixed income securities due to the aforementioned adoption of ASU 2016-01.

Unrealized Gains/Losses on Available-for-Sale Securities	For the Year Ended December 31,
(in thousands)	2018		2017		2016
Beginning balance	$	157,919	$	122,610	$	123,774
Cumulative effect adjustment of ASU 2016-01		(142,219)		—		—
Adjusted beginning balance	$	15,700	$	122,610	$	123,774
Other comprehensive earnings before reclassifications		(35,763)		40,887		26,740
Amounts reclassified from accumulated other comprehensive earnings		1,766		(5,578)		(27,904)
Net current-period other comprehensive earnings (loss)	$	(33,997)	$	35,309	$	(1,164)
Reclassification of stranded tax effect per ASU 2018-02 (see note 1.C)		3,725		—		—
Ending balance	$	(14,572)	$	157,919	$	122,610

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The sale or other-than-temporary impairment of an available-for-sale security results in amounts being reclassified from accumulated other comprehensive earnings to current period net earnings. The effects of reclassifications out of accumulated other comprehensive earnings by the respective line items of net earnings are presented in the following table. As previously mentioned, 2018 activity is reflective of activity on fixed income securities classified as available-for-sale, while 2017 and 2016 also includes activity from the equity portfolio.

Amount Reclassified from Accumulated Other Comprehensive Earnings
(in thousands)
Component of Accumulated	For the Year Ended December 31,						Affected line item in the
Other Comprehensive Earnings	2018		2017		2016		Statement of Earnings
Unrealized gains and losses on available-for-sale securities	$	(2,018)	$	11,141	$	43,024	Netrealized investment gains
		(217)		(2,559)		(95)	Other-than-temporary impairment (OTTI) losses on investments
	$	(2,235)	$	8,582	$	42,929	Earnings before income taxes
		469		(3,004)		(15,025)	Income tax benefit (expense)
	$	(1,766)	$	5,578	$	27,904	Net earnings

Q.FAIR VALUE DISCLOSURES

Fair value is defined as the price in the principal market that would be received for an asset to facilitate an orderly transaction between market participants on the measurement date. We determined the fair value of certain financial instruments based on their underlying characteristics and relevant transactions in the marketplace. We maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

The following are the levels of the fair value hierarchy and a brief description of the type of valuation inputs that are used to establish each level. Financial assets are classified based upon the lowest level of significant input that is used to determine fair value.

· Pricing Level 1 is applied to valuations based on readily available, unadjusted quoted prices in active markets for identical assets.

· Pricing Level 2 is applied to valuations based upon quoted prices for similar assets in active markets, quoted prices for identical or similar assets in inactive markets; or valuations based on models where the significant inputs are observable (e.g. interest rates, yield curves, prepayment speeds, default rates, loss severities) or can be corroborated by observable market data.

· Pricing Level 3 is applied to valuations that are derived from techniques in which one or more of the significant inputs are unobservable.

As a part of management’s process to determine fair value, we utilize widely recognized, third-party pricing sources to determine our fair values. We have obtained an understanding of the third-party pricing sources’ valuation methodologies and inputs. The following is a description of the valuation techniques used for financial assets that are measured at fair value, including the general classification of such assets pursuant to the fair value hierarchy.

Corporate, Agencies, Government and Municipal Bonds: The pricing vendor employs a multi-dimensional model which uses standard inputs including (listed in approximate order of priority for use) benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, market bids/offers and other reference data. The pricing vendor also monitors market indicators, as well as industry and economic events. All bonds valued using these techniques are classified as Level 2. All Corporate, Agencies, Government and Municipal securities are deemed Level 2.

Mortgage-backed Securities (MBS)/Collateralized Mortgage Obligations (CMO) and Asset-backed Securities (ABS): The pricing vendor evaluation methodology includes principally interest rate movements and new issue data. Evaluation of the tranches (non-volatile, volatile or credit sensitivity) is based on the pricing vendors’ interpretation of accepted modeling and pricing conventions. This information is then used to determine the cash flows for each tranche, benchmark yields, pre-payment assumptions and to incorporate collateral performance. To evaluate CMO volatility, an option

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adjusted spread model is used in combination with models that simulate interest rate paths to determine market price information. This process allows the pricing vendor to obtain evaluations of a broad universe of securities in a way that reflects changes in yield curve, index rates, implied volatility, mortgage rates and recent trade activity. MBS/CMO and ABS with corroborated, observable inputs are classified as Level 2. All of our MBS/CMO and ABS are deemed Level 2.

For all of our fixed income securities classified as Level 2, as described above, we periodically conduct a review to assess the reasonableness of the fair values provided by our pricing services. Our review consists of a two-pronged approach. First, we compare prices provided by our pricing services to those provided by an additional source. In some cases, we obtain prices from securities brokers and compare them to the prices provided by our pricing services. In our comparisons, if discrepancies are found, we compare our prices to actual reported trade data for like securities. No changes to the fair values supplied by our pricing services have occurred as a result of our reviews. Based on these assessments, we have determined that the fair values of our Level 2 securities provided by our pricing services are reasonable.

Common Stock: All but one of our common stock holdings are traded on an exchange. Exchange traded equities have readily observable price levels and are classified as Level 1 (fair value based on quoted market prices). Pricing for the equity security not traded on an exchange is provided by a third-party pricing source and is classified as Level 2.

Due to the relatively short-term nature of cash, short-term investments, accounts receivable and accounts payable, their carrying amounts are reasonable estimates of fair value. Our investments in private funds, classified as other invested assets, are measured using the investments’ net asset value per share and are not categorized within the fair value hierarchy. The fair value of our long-term debt is discussed further in note 4.

R.STOCK-BASED COMPENSATION

We expense the estimated fair value of employee stock options and similar awards. We measure compensation cost for awards of equity instruments to employees based on the grant-date fair value of those awards and recognize compensation expense over the service period that the awards are expected to vest.

The tax effects related to share-based payments were made through net earnings in 2018 and 2017. In 2016, the tax effects of share-based compensation were recognized in additional paid-in capital under the alternative transition method. The alternative transition method used simplified methods to determine the impact on the additional paid-in capital pool and consolidated statements of cash flows.

See note 8 for further discussion and related disclosures regarding stock options.

S.RISKS AND UNCERTAINTIES:

Certain risks and uncertainties are inherent to our day-to-day operations and to the process of preparing our consolidated financial statements. The more significant risks and uncertainties, as well as our attempt to mitigate, quantify and minimize such risks, are presented below and throughout the notes to the consolidated financial statements.

Insurance Risks

We compete with a large number of other companies in our selected lines of business. During periods of intense competition for premium, we are vulnerable to the actions of other companies who may seek to write business without the appropriate regard for risk and profitability. The insurance industry is currently operating under highly competitive conditions and, as a result, margins in the industry are under pressure. During these times, it is very difficult to grow or maintain premium volume without sacrificing underwriting discipline and income. Our profitability can be affected significantly by the ability of our underwriters to accurately select and price risk and our claim personnel to appropriately deliver fair outcomes. We attempt to mitigate this risk by incentivizing our underwriters to maximize underwriting profit and remain disciplined in pricing and selecting risks. If we are unable to compete effectively in the markets in which we operate or expand our operations into new markets, our underwriting revenues may decline, as well as overall business results.

Our loss reserves are based on estimates and may be inadequate to cover our actual insured losses, which would negatively impact our profitability. As of December 31, 2018 we had $1.5 billion of gross loss and LAE reserves. Significant periods of time often elapse between the occurrence of an insured loss, the reporting of the loss to the Company and our payment of that loss. As part of the reserving process, we review historical data and consider the impact of various factors such as trends in claim frequency and severity, emerging economic and social trends, inflation and changes in the regulatory and

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litigation environments. If the actual amount of insured losses is greater than the amount we have reserved for these losses, our profitability would suffer.

Catastrophe Exposures

Our insurance coverages include exposure to catastrophic events. We monitor all catastrophe exposures by quantifying our exposed policy limits in each region and by using computer-assisted modeling techniques. Additionally, we limit our risk to such catastrophes through restraining the total policy limits written in each region and by purchasing reinsurance. Our major catastrophe exposure is to losses caused by earthquakes, primarily on the West Coast. In 2018, we had reinsurance protection of $300 million in excess of $25 million first-dollar retention for earthquakes in California and $325 million in excess of a $25 million first-dollar retention for earthquakes outside of California. These amounts are subject to certain co-participations by the Company on losses in excess of the $25 million retentions. Our second largest catastrophe exposure is to losses caused by wind storms to commercial properties throughout the Gulf and East Coasts, as well as to homes we insure in Hawaii. In 2018, these coverages were supported by $225 million in excess of a $25 million first-dollar retention in traditional catastrophe reinsurance protection, subject to certain co-participations by the Company in the excess layers. In addition, we have incidental exposure to international catastrophic events.

Our catastrophe reinsurance treaty renewed on January 1, 2019. We purchased reinsurance protection of $400 million in excess of $25 million first-dollar retention for earthquakes in California and $425 million in excess of a $25 million first-dollar retention for earthquakes outside of California. For other CAT events, such as hurricanes, we purchased reinsurance protection of $275 million in excess of a $25 million first dollar retention. These amounts are subject to certain co-participations by the Company on losses in excess of the $25 million retentions. We actively manage our catastrophe program to keep our net retention in line with risk tolerances and to optimize the risk/return trade off.

Environmental Exposures

We are subject to environmental claims and exposures primarily through our commercial excess, general liability and discontinued assumed casualty reinsurance lines of business. Although exposure to environmental claims exists in these lines of business, we seek to mitigate or control the extent of this exposure on the vast majority of this business through the following methods: (1) our policies include pollution exclusions that have been continually updated to further strengthen them, (2) our policies primarily cover moderate hazard risks and (3) we began writing this business after the insurance industry became aware of the potential pollution liability exposure and implemented changes to limit exposure to this hazard.

We offer coverage for low to moderate environmental liability exposures for small contractors and asbestos and mold remediation specialists. We also provide limited coverage for individually underwritten underground storage tanks. The overall exposure is mitigated by focusing on smaller risks with low to moderate exposures. Risks that have large-scale exposures are avoided including petrochemical, chemical, mining, manufacturers and other risks that might be exposed to superfund sites. This business is covered under our casualty ceded reinsurance treaties.

We made loss and settlement expense payments on environmental liability claims and have loss and settlement expense reserves for others. We include this historical environmental loss experience with the remaining loss experience in the applicable line of business to project ultimate incurred losses and settlement expenses as well as related incurred but not reported (IBNR) loss and settlement expense reserves.

Although historical experience on environmental claims may not accurately reflect future environmental exposures, we used this experience to record loss and settlement expense reserves in the exposed lines of business. See further discussion of environmental exposures in note 6.

Reinsurance

Reinsurance does not discharge the Company from our primary liability to policyholders, and to the extent that a reinsurer is unable to meet its obligations, we would be liable. We continuously monitor the financial condition of prospective and existing reinsurers. As a result, we purchase reinsurance from a number of financially strong reinsurers. We provide an allowance for reinsurance balances deemed uncollectible. See further discussion of reinsurance exposures in note 5.

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Investment Risk

Our investment portfolio is subject to market, credit and interest rate risks. The equity portfolio will fluctuate with movements in the overall stock market. While the equity portfolio has been constructed to have lower downside risk than the market, the portfolio is positively correlated with movements in domestic stocks. The bond portfolio is affected by interest rate changes and movement in credit spreads. We attempt to mitigate our interest rate and credit risks by constructing a well-diversified portfolio with high-quality securities with varied maturities. Downturns in the financial markets could have a negative effect on our portfolio. However, we attempt to manage this risk through asset allocation, duration and security selection.

Liquidity Risk

Liquidity is essential to our business and a key component of our concept of asset-liability matching. Our liquidity may be impaired by an inability to collect premium receivable or reinsurance recoverable balances in a timely manner, an inability to sell assets or redeem our investments, an inability to access funds from our insurance subsidiaries, unforeseen outflows of cash or large claim payments or an inability to access debt or equity capital markets. This situation may arise due to circumstances that we may be unable to control, such as a general market disruption, an operational problem that affects third parties or the Company, or even by the perception among market participants that we, or other market participants, are experiencing greater liquidity risk.

Our credit ratings are important to our liquidity. A reduction in our credit ratings could adversely affect our liquidity and competitive position by increasing our borrowing costs or limiting our access to the capital markets.

Financial Statements

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenues and expenses. The most significant of these amounts is the liability for unpaid losses and settlement expenses. Other estimates include investment valuation and OTTIs, the collectability of reinsurance balances, recoverability of deferred tax assets and deferred policy acquisition costs. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. Although recorded estimates are supported by actuarial computations and other supportive data, the estimates are ultimately based on our expectations of future events. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the consolidated financial statements in future periods.

External Factors

Our insurance subsidiaries are highly regulated by the state in which they are incorporated and by the states in which they do business. Such regulations, among other things, limit the amount of dividends, impose restrictions on the amount and types of investments and regulate rates insurers may charge for various coverages. We are also subject to insolvency and guaranty fund assessments for various programs designed to ensure policyholder indemnification. We generally accrue an assessment during the period in which it becomes probable that a liability has been incurred from an insolvency and the amount of the related assessment can be reasonably estimated.

The National Association of Insurance Commissioners (NAIC) has developed Property/Casualty Risk-Based Capital (RBC) standards that relate an insurer’s reported statutory surplus to the risks inherent in its overall operations. The RBC formula uses the statutory annual statement to calculate the minimum indicated capital level to support investment and underwriting risk. The NAIC model law calls for various levels of regulatory action based on the magnitude of an indicated RBC capital deficiency, if any. We regularly monitor our subsidiaries’ internal capital requirements and the NAIC’s RBC developments. As of December 31, 2018, we determined that our capital levels are well in excess of the minimum capital requirements for all RBC action levels and that our capital levels are sufficient to support the level of risk inherent in our operations. See note 9 for further discussion of statutory information and related insurance regulatory restrictions.

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In addition, ratings are a critical factor in establishing the competitive position of insurance companies. Our insurance companies are rated by A.M. Best, S&P and Moody’s. Their ratings reflect their opinions of an insurance company’s and an insurance holding company’s financial strength, operating performance, strategic position and ability to meet its obligations to policyholders. 

2. INVESTMENTS

A summary of net investment income is as follows:

NET INVESTMENT INCOME
(in thousands)	2018		2017		2016
Interest on fixed income securities	$	54,491	$	48,343	$	46,834
Dividends on equity securities		9,814		10,506		10,929
Interest on cash, short-term investments and other invested assets		2,309		945		120
Gross investment income	$	66,614	$	59,794	$	57,883
Less investment expenses		(4,529)		(4,918)		(4,808)
Net investment income	$	62,085	$	54,876	$	53,075

Pretax net realized investment gains (losses) and net changes in unrealized gains (losses) on investments for the years ended December 31 are summarized as follows:

REALIZED/UNREALIZED GAINS
(in thousands)	2018		2017		2016
Net realized gains (losses):
Fixed income:
Available-for-sale	$	(2,018)	$	859	$	4,314
Available-for-sale OTTI		(217)		(2,559)		(95)
Equity securities		69,868		10,282		38,709
Other		(4,226)		(4,171)		(8,283)
Total	$	63,407	$	4,411	$	34,645
Net changes in unrealized gains (losses) on investments:
Fixed income:
Available-for-sale	$	(41,778)	$	16,846	$	(10,972)
Equity securities		(98,380)		36,844		8,659
Other invested assets		(355)		29		—
Investment in unconsolidated investees		(1,257)		604		522
Total	$	(141,770)	$	54,323	$	(1,791)
Net realized gains (losses) and changes in unrealized gains (losses) on investments	$	(78,363)	$	58,734	$	32,854

During 2018, we recorded $63.4 million in net realized gains, which included $4.4 million of other non-cash realized losses from goodwill and definite-lived intangible impairments. In addition, we recorded a change in net unrealized losses of $141.8 million. The majority of our net realized gains were due to sales of equity securities. The change in unrealized gain/loss position was due to the realization of gains in the course of selling equity securities and the price decline in both equities and bonds during 2018. For 2018, the net realized gains (losses) and changes in unrealized gains (losses) on investments totaled $(78.4) million.

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The following is a summary of the disposition of fixed income securities and equities for the years ended December 31, with separate presentations for sales and calls/maturities.

							Net
SALES	Proceeds		Gross Realized				Realized
(in thousands)	From Sales		Gains		Losses		Gain (Loss)
2018
Available-for-sale	$	394,318	$	3,131	$	(5,349)	$	(2,218)
Equities		147,838		71,065		(1,197)		69,868
2017
Available-for-sale	$	169,002	$	2,406	$	(1,670)	$	736
Equities		36,573		13,178		(2,896)		10,282
2016
Available-for-sale	$	329,091	$	7,158	$	(3,287)	$	3,871
Equities		89,909		39,668		(959)		38,709

							Net
CALLS/MATURITIES			Gross Realized				Realized
(in thousands)	Proceeds		Gains		Losses		Gain (Loss)
2018
Available-for-sale	$	187,380	$	311	$	(111)	$	200
2017
Available-for-sale	$	195,617	$	262	$	(139)	$	123
2016
Available-for-sale	$	141,255	$	445	$	(2)	$	443

FAIR VALUE MEASUREMENTS

Assets measured at fair value on a recurring basis as of December 31, 2018, are summarized below:

			Significant
	Quoted in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government	$	—	$	200,229	$	—	$	200,229
U.S. agency		—		31,904		—		31,904
Non-U.S. govt. & agency		—		7,639		—		7,639
Agency MBS		—		395,253		—		395,253
ABS/CMBS*		—		136,723		—		136,723
Corporate		—		668,679		—		668,679
Municipal		—		320,088		—		320,088
Total fixed income securities - available-for-sale	$	—	$	1,760,515	$	—	$	1,760,515
Equity securities		339,985		498		—		340,483
Total	$	339,985	$	1,761,013	$	—	$	2,100,998

*Non-agency asset-backed & commercial mortgage-backed

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Assets measured at fair value on a recurring basis as of December 31, 2017, are summarized below:

			Significant
	Quoted in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government	$	—	$	91,689	$	—	$	91,689
U.S. agency		—		18,778		—		18,778
Non-U.S. govt. & agency		—		7,588		—		7,588
Agency MBS		—		328,471		—		328,471
ABS/CMBS*		—		70,526		—		70,526
Corporate		—		519,022		—		519,022
Municipal		—		636,165		—		636,165
Total fixed income securities - available-for-sale	$	—	$	1,672,239	$	—	$	1,672,239
Equity securities		400,492		—		—		400,492
Total	$	400,492	$	1,672,239	$	—	$	2,072,731

*Non-agency asset-backed & commercial mortgage-backed

As noted in the previous tables, we did not have any assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as of December 31, 2018 and 2017. Additionally, there were no securities transferred in or out of levels 1 or 2 during 2018 or 2017.

The amortized cost and estimated fair value of fixed income securities at December 31, 2018, by contractual maturity, are shown as follows:

(in thousands)	Amortized Cost		Fair Value
Available-for-sale
Due in one year or less	$	41,319	$	41,333
Due after one year through five years		411,153		410,680
Due after five years through 10 years		615,061		608,115
Due after 10 years		168,716		168,412
Mtge/ABS/CMBS*		540,216		531,975
Total available-for-sale	$	1,776,465	$	1,760,515

*Mortgage-backed, asset-backed & commercial mortgage-backed

Expected maturities may differ from contractual maturities due to call provisions on some existing securities. At December 31, 2018, the net unrealized losses of available-for-sale fixed income securities totaled $16.0 million pretax. At December 31, 2017, the net unrealized appreciation of available-for-sale fixed maturities securities totaled $25.8 million pretax.

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In addition, the following table is a schedule of amortized costs and estimated fair values of investments in fixed income securities as of December 31, 2018 and 2017:

2018	Amortized				Gross Unrealized
(in thousands)	Cost		Fair Value		Gains		Losses
Available-for-sale
U.S. government	$	199,982	$	200,229	$	1,232	$	(985)
U.S. agency		31,716		31,904		403		(215)
Non-U.S. govt. & agency		8,170		7,639		—		(531)
Agency MBS		402,992		395,253		1,709		(9,448)
ABS/CMBS*		137,224		136,723		375		(876)
Corporate		681,909		668,679		2,894		(16,124)
Municipal		314,472		320,088		6,926		(1,310)
Total fixed income	$	1,776,465	$	1,760,515	$	13,539	$	(29,489)

2017	Amortized				Gross Unrealized
(in thousands)	Cost		Fair Value		Gains		Losses
Available-for-sale
U.S. government	$	92,561	$	91,689	$	23	$	(895)
U.S. agency		18,541		18,778		347		(110)
Non-U.S. govt. & agency		7,501		7,588		143		(56)
Agency MBS		329,129		328,471		3,420		(4,078)
ABS/CMBS*		70,405		70,526		436		(315)
Corporate		508,128		519,022		12,575		(1,681)
Municipal		620,146		636,165		17,272		(1,253)
Total fixed income	$	1,646,411	$	1,672,239	$	34,216	$	(8,388)

*Non-agency asset-backed & commercial mortgage-backed

Mortgage-Backed, Commercial Mortgage-Backed and Asset-Backed Securities

Gross unrealized losses in the collateralized securities bond portfolio increased to $10.3 million in 2018 as interest rates increased during the year. All of our collateralized securities carry the highest credit rating by one or more major rating agencies and continue to pay according to contractual terms.

For all fixed income securities at an unrealized loss at December 31, 2018, we believe it is probable that we will receive all contractual payments in the form of principal and interest. In addition, we are not required to, nor do we intend to, sell these investments prior to recovering the entire amortized cost basis of each security, which may be at maturity. We do not consider these investments to be other-than-temporarily impaired at December 31, 2018.

Corporate Bonds

Gross unrealized losses in the corporate bond portfolio increased to $16.1 million in 2018 from $1.7 million at the end of 2017 as interest rates and credit spreads increased during the year. The corporate bond portfolio has an overall rating of A-.

Municipal Bonds

As of December 31, 2018, municipal bonds totaled $320.1 million with gross unrealized losses of $1.3 million, the same as the previous year. As of December 31, 2018, approximately 42 percent of the municipal fixed income securities in the investment portfolio were general obligations of state and local governments and the remaining 58 percent were revenue based. Eighty-five percent of our municipal fixed income securities were rated AA or better while 99 percent were rated A or better.

Equity Securities

Our equity portfolio consists of common stocks and exchange traded funds (ETF). Gross unrealized losses in the equity portfolio increased $9.2 million to $10.1 million in 2018 as equity markets declined during the year.

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Impairment Analysis

Under current accounting standards, an OTTI write-down of debt securities, where fair value is below amortized cost, is triggered by circumstances where: (1) an entity has the intent to sell a security, (2) it is more likely than not that the entity will be required to sell the security before recovery of its amortized cost basis or (3) the entity does not expect to recover the entire amortized cost basis of the security. If an entity intends to sell a security or if it is more likely than not the entity will be required to sell the security before recovery, an OTTI write-down is recognized in earnings equal to the difference between the security’s amortized cost and its fair value. If an entity does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the OTTI write-down is separated into an amount representing the credit loss, which is recognized in earnings, and the amount related to all other factors, which is recognized in other comprehensive income.

As part of our evaluation of whether particular securities are other-than-temporarily impaired, we consider our intent to sell a security (which is determined on a security-by-security basis) and whether it is more likely than not we will be required to sell the security before the recovery of our amortized cost basis. Significant changes in these factors could result in a charge to net earnings for impairment losses. Impairment losses result in a reduction of the underlying investment’s cost basis.

The following table is also used as part of our impairment analysis and displays the total value of debt securities that were in an unrealized loss position as of December 31, 2018, and December 31, 2017. The table segregates the securities based on type, noting the fair value, amortized cost and unrealized loss on each category of investment as well as in total. The table further classifies the securities based on the length of time they have been in an unrealized loss position.

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	December 31, 2018						December 31, 2017
			12 Mos.						12 Mos.
(in thousands)	< 12 Mos.		& Greater		Total		< 12 Mos.		& Greater		Total
U.S. Government
Fair value	$	7,249	$	76,073	$	83,322	$	58,009	$	30,888	$	88,897
Amortized cost		7,270		77,037		84,307		58,443		31,349		89,792
Unrealized Loss	$	(21)	$	(964)	$	(985)	$	(434)	$	(461)	$	(895)
U.S. Agency
Fair value	$	—	$	8,843	$	8,843	$	10,917	$	—	$	10,917
Amortized cost		—		9,058		9,058		11,027		—		11,027
Unrealized Loss	$	—	$	(215)	$	(215)	$	(110)	$	—	$	(110)
Non-U.S. Government
Fair value	$	5,432	$	2,207	$	7,639	$	—	$	1,840	$	1,840
Amortized cost		5,571		2,599		8,170		—		1,896		1,896
Unrealized Loss	$	(139)	$	(392)	$	(531)	$	—	$	(56)	$	(56)
Agency MBS
Fair value	$	25,345	$	261,325	$	286,670	$	122,130	$	111,306	$	233,436
Amortized cost		25,486		270,632		296,118		123,559		113,955		237,514
Unrealized Loss	$	(141)	$	(9,307)	$	(9,448)	$	(1,429)	$	(2,649)	$	(4,078)
ABS/CMBS*
Fair value	$	46,918	$	32,137	$	79,055	$	23,406	$	21,587	$	44,993
Amortized cost		47,146		32,785		79,931		23,491		21,817		45,308
Unrealized Loss	$	(228)	$	(648)	$	(876)	$	(85)	$	(230)	$	(315)
Corporate
Fair value	$	306,177	$	147,751	$	453,928	$	86,946	$	28,600	$	115,546
Amortized cost		315,428		154,624		470,052		87,736		29,491		117,227
Unrealized Loss	$	(9,251)	$	(6,873)	$	(16,124)	$	(790)	$	(891)	$	(1,681)
Municipal
Fair value	$	6,036	$	55,681	$	61,717	$	71,059	$	60,049	$	131,108
Amortized cost		6,052		56,975		63,027		71,534		60,827		132,361
Unrealized Loss	$	(16)	$	(1,294)	$	(1,310)	$	(475)	$	(778)	$	(1,253)
Total fixed income
Fair value	$	397,157	$	584,017	$	981,174	$	372,467	$	254,270	$	626,737
Amortized cost		406,953		603,710		1,010,663		375,790		259,335		635,125
Unrealized Loss	$	(9,796)	$	(19,693)	$	(29,489)	$	(3,323)	$	(5,065)	$	(8,388)

*Non-agency asset-backed & commercial mortgage-backed

The fixed income portfolio contained 777 securities in an unrealized loss position as of December 31, 2018. Of these 777 securities, 302 have been in an unrealized loss position for 12 consecutive months or longer and represent $19.7 million in unrealized losses. All fixed income securities continue to pay the expected coupon payments under the contractual terms of the securities. Credit-related impairments on fixed income securities that we do not plan to sell, and for which we are not more likely than not to be required to sell, are recognized in net earnings. Any non-credit related impairment is recognized in comprehensive earnings. Based on our analysis, our fixed income portfolio is of a high credit quality and we believe we will recover the amortized cost basis of our fixed income securities. We continually monitor the credit quality of our fixed income investments to assess if it is probable that we will receive our contractual or estimated cash flows in the form of principal and

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interest. There were no OTTI losses recognized in other comprehensive earnings in the periods presented. Key factors that we consider in the evaluation of credit quality include:

· Changes in technology that may impair the earnings potential of the investment,

· The discontinuance of a segment of business that may affect future earnings potential,

· Reduction or elimination of dividends,

· Specific concerns related to the issuer’s industry or geographic area of operation,

· Significant or recurring operating losses, poor cash flows and/or deteriorating liquidity ratios and

· Downgrades in credit quality by a major rating agency.

Based on our analysis, we concluded that the securities in an unrealized loss position were not other-than-temporarily impaired at December 31, 2018 and 2017. There were $0.2 million, $2.6 million and $0.1 million in losses associated with OTTI of securities in 2018, 2017 and 2016, respectively.

Unrealized Gains and Losses on Equity Securities

Unrealized gains (losses) recognized during 2018 on equity securities still held as of December 31, 2018 were $(28.7) million. Unrealized gains (losses) recognized during 2017 on equity securities still held as of December 31, 2017 were $47.2 million.

Other Invested Assets

We had $51.5 million of other invested assets at December 31, 2018, compared to $33.8 million at the end of 2017. Other invested assets include investments in low income housing tax credit (LIHTC) partnerships, membership stock in the Federal Home Loan Bank of Chicago (FHLBC) and investments in private funds. Our LIHTC investments are carried at amortized cost and our investment in FHLBC stock is carried at cost. Due to the nature of the LIHTC and our membership in the FHLBC, their carrying amounts approximate fair value. The private funds are carried at fair value, using each investment’s net asset value.

Our LIHTC interests had a balance of $20.3 million at December 31, 2018 compared to $15.5 million at December 31, 2017 and recognized a total tax benefit of $2.2 million during 2018 compared to $2.4 million during 2017 and $1.9 million during 2016. Our unfunded commitment for our LIHTC investments totaled $7.4 million at December 31, 2018 and will be paid out in installments through 2025.

We had $18.8 million of unfunded commitments related to our investments in private funds at December 31, 2018. Additionally, our interest in these investments is generally restricted from being transferred or otherwise redeemed without prior consent by the respective entities. An initial public offering would allow for the transfer of interest in some situations, while the timed dissolution of the partnership would trigger redemption in others.

Restricted Assets

As of December 31, 2018, $16.1 million of investments were pledged as collateral with the FHLBC to ensure timely access to the secured lending facility that ownership of the FHLBC stock provides. As of and during year ended December 31, 2018, there were no outstanding borrowings with the FHLBC.

As of December 31, 2018, fixed income securities with a carrying value of $59.2 million were on deposit with regulatory authorities as required by law.

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3. POLICY ACQUISITION COSTS

Policy acquisition costs deferred and amortized to income for the years ended December 31 are summarized as follows:

(in thousands)	2018		2017		2016
Deferred policy acquisition costs (DAC), beginning of year	$	77,716	$	73,147	$	69,829
Deferred:
Direct commissions	$	175,697	$	157,723	$	150,390
Premium taxes		12,654		11,651		11,759
Ceding commissions		(22,190)		(18,096)		(17,488)
Net deferred	$	166,161	$	151,278	$	144,661
Amortized		158,943		146,709		141,343
DAC, end of year	$	84,934	$	77,716	$	73,147
Policy acquisition costs:
Amortized to expense - DAC	$	158,943	$	146,709	$	141,343
Period costs:
Ceding commission - contingent		(2,241)		(3,575)		(1,524)
Other underwriting expenses		111,036		109,381		109,793
Total policy acquisition costs	$	267,738	$	252,515	$	249,612

4. DEBT

As of December 31, 2018, outstanding debt balances totaled $149.1 million, net of unamortized discount and debt issuance costs, all of which were our long-term senior notes.

On October 2, 2013, we completed a public debt offering, issuing $150.0 million in senior notes maturing September 15, 2023, and paying interest semi-annually at the rate of 4.875 percent. The notes were issued at a discount resulting in proceeds, net of discount and commission, of $148.6 million. The amount of the discount is being charged to income over the life of the debt on an effective-yield basis. The estimated fair value for the senior note was $155.9 million as of December 31, 2018. The fair value of our long-term debt is based on the limited observable prices that reflect thinly traded securities and is therefore classified as a level 2 liability within the fair value hierarchy.

We paid $7.3 million of interest on our senior notes in each of the last three years. The average rate on debt was 4.91 percent in 2018, 2017 and 2016.

We maintain a revolving line of credit with JP Morgan Chase Bank N.A., which permits the Company to borrow up to an aggregate principal amount of $50.0 million. This facility was entered into during the second quarter of 2018 and replaced the previous $40.0 million facility which expired on May 28, 2018. Under certain conditions, the line may be increased up to an aggregate principal amount of $75.0 million. This facility has a two-year term that expires on May 24, 2020. As of and during the years ended December 31, 2018, 2017 and 2016, no amounts were outstanding on these facilities.

5. REINSURANCE

In the ordinary course of business, our insurance subsidiaries assume and cede premiums and selected insured risks with other insurance companies, known as reinsurance. A large portion of the reinsurance is put into effect under contracts known as treaties and, in some instances, by negotiation on each individual risk (known as facultative reinsurance). In addition, there are several types of treaties including quota share, excess of loss and catastrophe reinsurance contracts that protect against losses over stipulated amounts arising from any one occurrence or event. The arrangements allow the Company to pursue greater diversification of business and serve to limit the maximum net loss to a single event, such as a catastrophe. Through the quantification of exposed policy limits in each region and the extensive use of computer-assisted modeling techniques, we monitor the concentration of risks exposed to catastrophic events.

Through the purchase of reinsurance, we also generally limit our net loss on any individual risk to a maximum of $3.0 million, although retentions can vary.

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Premiums written and earned along with losses and settlement expenses incurred for the years ended December 31 are summarized as follows:

(in thousands)	2018		2017		2016
WRITTEN
Direct	$	934,913	$	848,153	$	844,430
Reinsurance assumed		48,303		37,159		30,434
Reinsurance ceded		(160,041)		(135,458)		(133,912)
Net	$	823,175	$	749,854	$	740,952
EARNED
Direct	$	896,234	$	835,118	$	835,294
Reinsurance assumed		41,926		32,521		27,886
Reinsurance ceded		(146,794)		(129,702)		(134,572)
Net	$	791,366	$	737,937	$	728,608
LOSSES AND SETTLEMENT EXPENSES INCURRED
Direct	$	560,421	$	486,986	$	405,873
Reinsurance assumed		20,376		16,072		13,196
Reinsurance ceded		(152,604)		(101,474)		(69,291)
Net	$	428,193	$	401,584	$	349,778

At December 31, 2018, we had unearned reinsurance premiums and recoverables on paid and unpaid losses and settlement expenses totaling $430.0 million. More than 93 percent of our reinsurance recoverables are due from companies with financial strength ratings of “A” or better by A.M. Best and S&P rating services.

The following table displays net reinsurance balances recoverable, after consideration of collateral, from our top reinsurers as of December 31, 2018. These reinsurers all have financial strength ratings of “A” or better by A.M. Best and Standard and Poor’s ratings services. Also shown are the amounts of written premium ceded to these reinsurers during the calendar year 2018.

			Net Reinsurer				Ceded
	A.M. Best	S & P	Exposure as of		Percent of		Premiums		Percent of
(dollars in thousands)	Rating	Rating	12/31/2018		Total		Written		Total
Munich Re / HSB	A+, Superior	AA-, Very Strong	$	73,593	17.1	%	$	24,479	15.3	%
Swiss Re / Westport Ins. Corp.	A+, Superior	AA-, Very Strong		35,095	8.2	%		2,100	1.3	%
Endurance Re	A+, Superior	A+, Strong		28,754	6.7	%		6,000	3.8	%
Aspen UK Ltd.	A, Excellent	A, Strong		27,735	6.4	%		7,906	4.9	%
Berkley Insurance Co.	A+, Superior	A+, Strong		23,267	5.4	%		6,335	4.0	%
Hannover Ruckversicherung	A+, Superior	AA-, Very Strong		22,629	5.3	%		9,458	5.9	%
Axis Re	A+, Superior	A+, Strong		19,928	4.6	%		6,424	4.0	%
Transatlantic Re	A+, Superior	A+, Strong		19,517	4.5	%		7,911	4.9	%
Toa Re	A, Excellent	A+, Strong		18,480	4.3	%		6,495	4.1	%
General Re	A++, Superior	AA+, Very Strong		18,168	4.2	%		5,170	3.2	%
Tokio Millennium Re	A+, Superior	A+, Strong		17,044	4.0	%		6,947	4.3	%
All other reinsurers*				125,777	29.3	%		70,816	44.3	%
Total ceded exposure			$	429,987	100.0	%	$	160,041	100.0	%

*All other reinsurance balances recoverable, when considered by individual reinsurer, are less than 2 percent of shareholders’ equity.

Ceded unearned premiums and reinsurance balances recoverable on paid losses and settlement expenses are reported separately as an asset, rather than being netted with the related liability, since reinsurance does not relieve the Company of our liability to policyholders. Such balances are subject to the credit risk associated with the individual reinsurer. We continually monitor the financial condition of our reinsurers and actively follow up on any past due or disputed amounts. As part of our monitoring efforts, we review their annual financial statements and SEC filings for those reinsurers that are publicly traded. We

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also review insurance industry developments that may impact the financial condition of our reinsurers. We analyze the credit risk associated with our reinsurance balances recoverable by monitoring the A.M. Best and S&P ratings of our reinsurers. In addition, we subject our reinsurance recoverables to detailed recoverability tests, including a segment-based analysis using the average default rating percentage by S&P rating, which assists the Company in assessing the sufficiency of the existing allowance. Additionally, we perform an in-depth reinsurer financial condition analysis prior to the renewal of our reinsurance placements.

Our policy is to charge to earnings, in the form of an allowance, an estimate of unrecoverable amounts from reinsurers. This allowance is reviewed on an ongoing basis to ensure that the amount makes a reasonable provision for reinsurance balances that we may be unable to recover. Once regulatory action (such as receivership, finding of insolvency, order of conservation or order of liquidation) is taken against a reinsurer, the paid and unpaid recoverable for the reinsurer are specifically identified and written off through the use of our allowance for estimated unrecoverable amounts from reinsurers. When we write-off such a balance, it is done in full. We then re-evaluate the remaining allowance and determine whether the balance is sufficient as detailed above and if needed, an additional allowance is recognized and income charged. The amounts of allowances for uncollectible amounts on paid and unpaid recoverables were $16.1 million and $9.8 million, respectively, at December 31, 2018. At December 31, 2017, the amounts were $15.9 million and $10.0 million, respectively. We have no receivables with a due date that extends beyond one year that are not included in our allowance for uncollectible amounts.

6. HISTORICAL LOSS AND LAE DEVELOPMENT

The following table is a reconciliation of our unpaid losses and settlement expenses (LAE) for the years 2018, 2017 and 2016:

(in thousands)	2018		2017		2016
Unpaid losses and LAE at beginning of year:
Gross	$	1,271,503	$	1,139,337	$	1,103,785
Ceded		(301,991)		(288,224)		(297,844)
Net	$	969,512	$	851,113	$	805,941
Increase (decrease) in incurred losses and LAE:
Current accident year	$	478,143	$	440,452	$	391,772
Prior accident years		(49,950)		(38,868)		(41,994)
Total incurred	$	428,193	$	401,584	$	349,778
Loss and LAE payments for claims incurred:
Current accident year	$	(76,050)	$	(73,392)	$	(70,540)
Prior accident year		(225,306)		(209,793)		(234,066)
Total paid	$	(301,356)	$	(283,185)	$	(304,606)
Net unpaid losses and LAE at end of year	$	1,096,349	$	969,512	$	851,113
Unpaid losses and LAE at end of year:
Gross	$	1,461,348	$	1,271,503	$	1,139,337
Ceded		(364,999)		(301,991)		(288,224)
Net	$	1,096,349	$	969,512	$	851,113

Loss development occurs when our current estimate of ultimate losses, established through our reserve analysis processes, differs from the initial reserve estimate. The recognition of the changes in initial reserve estimates occurred over time as claims were reported, initial case reserves were established, initial reserves were reviewed in light of additional information and ultimate payments were made on the collective set of claims incurred as of that evaluation date. The new information on the ultimate settlement value of claims is continually updated until all claims in a defined set are settled. As a small specialty insurer with a diversified product portfolio, our experience will ordinarily exhibit fluctuations from period to period. While we attempt to identify and react to systematic changes in the loss environment, we also must consider the volume of claim experience directly available to the Company and interpret any particular period’s indications with a realistic technical understanding of the reliability of those observations.

The following is information about incurred and paid loss development as of December 31, 2018, net of reinsurance, as well as cumulative claim frequency, the total of IBNR liabilities included within the net incurred loss amounts and average historical

90

claims duration as of December 31, 2018. The loss information has been disaggregated so that only losses that are expected to develop in a similar manner are grouped together. This has resulted in the presentation of loss information for our property and surety segments at the segment level, while information for our casualty segment has been separated in four groupings: primary occurrence, excess occurrence, claims made and transportation. Primary occurrence includes select lines within the professional services product along with general liability, small commercial and other casualty products. Excess occurrence encompasses commercial excess and personal umbrella, while claims made includes select lines within the professional services product and medical professional liability and executive products. Reported claim counts represent claim events on a specified policy rather than individual claimants and includes claims that did not or are not expected to result in an incurred loss. The information about incurred and paid claims development for the years ended December 31, 2009 to 2017 is presented as unaudited required supplementary information.

Casualty - Primary Occurrence
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	85,476	$	119,957	$	99,765	$	91,441	$	86,888	$	82,651	$	81,138	$	80,518	$	80,350	$	81,445		$	2,202	5,713
2010				87,875		96,582		93,589		88,820		85,034		80,289		78,685		78,991		80,216			2,392	6,117
2011						91,139		98,428		94,145		89,622		86,342		83,181		82,193		82,248			3,180	5,851
2012								91,807		78,406		65,893		61,072		59,028		59,488		60,328			3,502	5,163
2013										80,823		67,297		62,882		60,329		60,162		59,556			6,538	4,287
2014												88,092		79,497		71,592		67,237		66,389			12,492	4,242
2015														94,835		84,975		83,579		78,675			21,351	4,311
2016																101,950		96,753		90,611			38,505	4,148
2017																		119,741		111,391			64,662	4,119
2018																				141,513			109,482	3,773
																		Total	$	852,372
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	1,972	$	9,233	$	24,115	$	43,702	$	58,460	$	65,913	$	70,220	$	74,920	$	75,948	$	77,175
2010				2,587		13,025		29,312		44,051		55,992		61,929		66,399		69,514		73,318
2011						5,924		17,124		32,978		48,822		60,769		67,358		71,413		74,814
2012								5,897		14,539		23,889		33,822		43,276		47,970		51,611
2013										6,334		13,021		22,366		34,786		40,609		45,753
2014												11,436		18,771		29,545		40,270		47,343
2015														10,157		19,902		33,020		45,056
2016																10,142		24,186		35,764
2017																		13,154		25,933
2018																				15,066
	* Presented as unaudited required supplementary information.																	Total	$	491,833
										All outstanding liabilities before 2009, net of reinsurance										11,911
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	372,450
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		9.7	%	12.4	%	16.8	%	18.6	%	13.9	%	8.2	%	5.5	%	4.6	%	3.0	%	1.5	%

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Casualty - Excess Occurrence
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	30,267	$	19,719	$	14,981	$	12,893	$	12,966	$	12,459	$	12,601	$	11,982	$	12,055	$	12,072		$	285	567
2010				29,314		24,244		22,111		18,932		20,044		22,044		21,018		20,530		20,527			369	500
2011						26,272		17,148		17,443		18,641		19,160		20,959		21,295		22,032			824	581
2012								29,042		21,558		21,021		21,885		21,231		22,433		23,020			1,386	855
2013										39,984		34,824		26,857		25,425		25,599		24,922			3,488	933
2014												50,889		39,095		35,119		32,274		33,372			8,832	875
2015														53,672		50,857		47,392		42,840			14,320	669
2016																56,341		49,385		37,676			25,675	572
2017																		62,863		55,868			43,891	473
2018																				69,362			63,524	258
																		Total	$	341,691
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	956	$	3,947	$	6,585	$	9,460	$	11,001	$	10,808	$	11,776	$	11,780	$	11,786	$	11,787
2010				7		6,002		10,705		13,282		15,512		17,302		19,175		19,256		19,308
2011						2,169		5,145		6,981		8,793		10,772		16,494		17,769		20,214
2012								1,315		3,573		8,843		15,380		16,879		17,747		19,310
2013										1,060		5,701		10,967		14,545		16,967		17,956
2014												1,899		4,006		11,002		18,852		22,541
2015														2,048		10,127		19,571		23,184
2016																1,068		3,396		7,441
2017																		17		5,679
2018																				2,506
	* Presented as unaudited required supplementary information.																	Total	$	149,926
										All outstanding liabilities before 2009, net of reinsurance										17,918
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	209,683
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		4.5	%	15.3	%	18.9	%	17.0	%	10.0	%	8.2	%	7.4	%	3.8	%	0.2	%	0.0	%

Casualty - Claims Made
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	12,918	$	13,703	$	9,687	$	13,562	$	11,710	$	13,117	$	12,810	$	12,053	$	11,827	$	16,056		$	398	383
2010				13,690		15,556		9,776		10,429		11,689		10,581		9,175		9,024		8,735			219	502
2011						17,416		17,454		12,260		10,619		8,510		7,720		7,852		11,506			640	682
2012								27,576		26,144		20,727		19,590		18,022		17,612		17,569			1,251	803
2013										40,095		41,488		44,054		40,288		38,473		37,959			3,751	1,042
2014												53,929		55,386		58,152		55,350		51,554			7,271	1,304
2015														55,006		47,831		42,206		39,906			10,559	1,335
2016																59,992		67,760		69,493			23,817	1,500
2017																		60,572		62,450			35,365	1,627
2018																				66,128			50,820	1,272
																		Total	$	381,356
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	113	$	442	$	773	$	3,413	$	5,176	$	10,678	$	11,217	$	11,398	$	11,475	$	11,955
2010				259		1,548		2,308		3,626		5,733		5,749		6,956		8,485		8,512
2011						330		1,949		4,508		5,947		5,637		6,209		6,835		7,132
2012								433		4,086		6,898		9,218		10,968		14,378		15,621
2013										792		7,073		18,425		26,121		29,678		32,789
2014												1,705		9,775		27,923		35,755		40,080
2015														2,215		10,738		16,774		20,920
2016																2,060		14,558		27,465
2017																		2,455		11,350
2018																				1,964
	* Presented as unaudited required supplementary information.																	Total	$	177,788
										All outstanding liabilities before 2009, net of reinsurance										933
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	204,501
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		3.0	%	15.3	%	18.5	%	14.7	%	10.0	%	13.4	%	7.4	%	7.1	%	0.4	%	3.0	%

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Casualty - Transportation
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	26,349	$	23,366	$	23,174	$	22,929	$	22,613	$	22,340	$	21,958	$	21,969	$	21,926	$	21,911		$	19	2,644
2010				27,239		23,390		24,912		25,593		23,981		23,625		23,701		23,786		23,776			44	2,843
2011						22,957		23,479		25,747		25,272		25,431		25,376		25,167		25,614			52	2,469
2012								21,452		22,203		22,924		23,511		23,689		23,620		23,305			76	2,284
2013										32,742		32,853		32,989		37,673		38,811		39,974			350	2,852
2014												38,361		33,015		36,452		38,590		40,202			911	3,099
2015														38,561		46,258		47,021		46,395			3,824	3,179
2016																50,430		53,519		54,105			7,632	3,920
2017																		55,640		53,641			16,406	3,597
2018																				57,597			16,690	3,154
																		Total	$	386,520
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	5,035	$	8,698	$	14,613	$	19,933	$	21,100	$	21,325	$	21,640	$	21,650	$	21,650	$	21,650
2010				6,296		10,116		15,475		20,045		21,792		23,063		23,488		23,533		23,556
2011						5,295		9,485		14,477		19,443		22,375		23,537		23,941		24,377
2012								4,466		8,533		12,394		17,318		20,931		22,566		22,730
2013										5,306		11,978		19,761		28,220		33,480		35,923
2014												7,125		13,933		19,676		27,457		33,190
2015														6,984		20,709		29,554		37,222
2016																8,923		18,354		30,354
2017																		7,979		17,070
2018																				6,980
	* Presented as unaudited required supplementary information.																	Total	$	253,052
										All outstanding liabilities before 2009, net of reinsurance										90
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	133,558
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		17.9	%	18.2	%	20.1	%	20.2	%	11.2	%	4.8	%	1.4	%	0.6	%	0.0	%	0.0	%

Property
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	59,975	$	55,821	$	52,286	$	49,534	$	48,969	$	48,857	$	48,707	$	49,267	$	49,323	$	48,925		$	13	2,630
2010				63,194		59,145		55,427		53,937		54,153		52,927		52,964		52,952		52,903			29	2,851
2011						70,246		66,924		64,976		63,724		62,770		62,570		62,456		62,875			142	3,028
2012								85,485		80,155		79,181		77,569		79,175		78,125		78,161			167	2,640
2013										63,864		62,090		62,173		62,114		61,914		61,834			273	2,995
2014												56,587		49,441		48,801		48,761		49,217			315	4,560
2015														59,863		56,103		53,958		52,720			680	4,076
2016																62,900		55,594		55,384			2,093	3,369
2017																		90,803		83,273			9,346	2,873
2018																				89,091			23,235	2,030
																		Total	$	634,383
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	25,464	$	40,775	$	43,758	$	46,004	$	48,031	$	48,297	$	48,329	$	49,051	$	49,173	$	48,898
2010				25,274		43,091		47,743		50,055		52,729		52,426		52,719		52,851		52,855
2011						27,676		48,756		55,778		59,099		60,272		61,428		61,834		62,729
2012								39,074		66,509		72,057		73,705		75,640		76,152		77,159
2013										32,208		50,840		57,407		59,259		60,520		61,195
2014												30,550		43,380		46,148		46,528		47,799
2015														32,184		49,348		50,197		51,290
2016																33,134		46,921		51,371
2017																		41,314		66,818
2018																				37,048
	* Presented as unaudited required supplementary information.																	Total	$	557,162
										All outstanding liabilities before 2009, net of reinsurance										17
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	77,238
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		52.0	%	30.9	%	7.4	%	3.2	%	3.0	%	0.7	%	0.6	%	1.0	%	0.1	%	-0.6	%

93

Surety
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	15,474	$	4,896	$	4,708	$	4,246	$	4,146	$	4,551	$	4,288	$	4,923	$	4,860	$	4,935		$	2	1,665
2010				13,961		8,205		6,630		7,076		6,810		7,136		7,645		6,244		6,580			14	1,540
2011						13,842		17,832		17,792		17,321		16,766		16,695		16,480		18,281			13	1,674
2012								17,114		11,452		8,667		8,180		7,867		7,471		7,099			22	1,469
2013										16,080		7,516		6,170		5,399		5,271		5,231			50	1,400
2014												16,450		8,106		5,225		4,427		4,267			88	1,337
2015														16,958		12,957		11,113		10,456			824	1,201
2016																18,928		11,062		9,351			1,543	1,307
2017																		16,127		8,641			3,630	1,409
2018																				16,765			14,535	654
																		Total	$	91,606
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	892	$	1,914	$	2,382	$	2,493	$	3,490	$	4,336	$	3,919	$	3,908	$	4,849	$	4,933
2010				1,724		3,205		5,702		7,092		7,151		7,285		7,822		6,663		6,637
2011						8,160		16,932		17,151		17,403		17,212		17,086		17,086		17,013
2012								1,883		6,680		6,726		7,416		7,536		7,406		7,065
2013										1,116		2,856		4,701		4,911		5,098		5,150
2014												722		4,283		4,166		4,059		4,131
2015														3,192		6,719		7,695		9,436
2016																3,087		5,817		6,299
2017																		979		2,862
2018																				1,835
	* Presented as unaudited required supplementary information.																	Total	$	65,361
										All outstanding liabilities before 2009, net of reinsurance										1,992
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	28,237
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		24.0	%	40.0	%	12.0	%	7.5	%	4.5	%	3.5	%	-1.3	%	-6.1	%	9.3	%	1.7	%

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The following is a reconciliation of the net incurred and paid loss development tables to the liability for unpaid losses and settlement expenses in the consolidated balance sheet:

Reconciliation of the Disclosure of Incurred and Paid Loss Development to the Liability for Unpaid Losses and Settlement Expenses
(in thousands)	December 31, 2018		December 31, 2017
Net outstanding liabilities:
Casualty - Primary Occurrence	$	372,450	$	325,182
Casualty - Excess Occurrence		209,683		188,963
Casualty - Claims Made		204,501		171,241
Casualty - Transportation		133,558		119,704
Property		77,238		68,867
Surety		28,237		23,375
Unallocated loss adjustment expenses		50,891		48,844
Allowance for uncollectible reinsurance balances recoverable on unpaid losses and settlement expenses		9,793		10,014
Other		9,998		13,322
Liabilities for unpaid loss and settlement expenses, net of reinsurance	$	1,096,349	$	969,512
Reinsurance recoverable on unpaid claims:
Casualty - Primary Occurrence	$	34,742	$	36,158
Casualty - Excess Occurrence		81,072		74,400
Casualty - Claims Made		144,921		117,436
Casualty - Transportation		50,748		46,590
Property		50,495		28,613
Surety		11,834		7,079
Allowance for uncollectible reinsurance balances recoverable on unpaid losses and settlement expenses		(9,793)		(10,014)
Other		980		1,729
Total reinsurance balances recoverable on unpaid losses and settlement expenses	$	364,999	$	301,991
Total gross liability for unpaid loss and settlement expenses	$	1,461,348	$	1,271,503

DETERMINATION OF IBNR

Initial carried IBNR reserves are determined through a reserve estimation process. For most casualty and surety products, this process involves the use of an initial loss and allocated loss adjustment expense (ALAE) ratio that is applied to the earned premium for a given period. Payments and case reserves are subtracted from this initial estimate of ultimate loss and ALAE to determine a carried IBNR reserve. For most property products, the IBNR reserves are determined by IBNR percentages applied to premium earned. The percentages are determined based on historical reporting patterns and are updated periodically. No deductions for paid or case reserves are made. Shortly after natural or man-made catastrophes, we review insured locations exposed to the event and model losses based on our own exposures and industry loss estimates of the event. We also consider our knowledge of frequency and severity from early claim reports to determine an appropriate reserve for the catastrophe. Adjustments to the initial loss ratio by product and segment are made where necessary and reflect updated assumptions regarding loss experience, loss trends, price changes and prevailing risk factors.

Actuaries perform a ground-up reserve study of the expected value of the unpaid loss and LAE derived using multiple standard actuarial methodologies on a quarterly basis. Each method produces an estimate of ultimate loss by accident year. We review all of these various estimates and assign weights to each based on the characteristics of the product being reviewed. These estimates are then compared to the carried loss reserves to determine the appropriateness of the current reserve balance. In addition, an emergence analysis is completed quarterly to determine if further adjustments are necessary.

Upon completion of our loss and LAE estimation analysis, a review of the resulting variance between the indicated reserves and the carried reserves takes place. Our actuaries make a recommendation to management in regards to booked reserves that reflect their analytical assessment and view of estimation risk. After discussion of these analyses and all relevant risk factors, the Loss Reserve Committee, a panel of management including the lead reserving actuary, chief executive officer, chief operating officer, chief financial officer and other executives, confirms the appropriateness of the reserve balances.

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DEVELOPMENT OF IBNR RESERVES

The following table summarizes our prior accident years’ loss reserve development by segment for 2018, 2017 and 2016:

(FAVORABLE)/UNFAVORABLE RESERVE DEVELOPMENT BY SEGMENT
(in thousands)	2018		2017		2016
Casualty	$	(33,252)	$	(17,462)	$	(32,401)
Property		(10,813)		(12,134)		(4,793)
Surety		(5,885)		(9,272)		(4,800)
Total	$	(49,950)	$	(38,868)	$	(41,994)

A discussion of significant components of reserve development for the three most recent calendar years follows:

2018.    We experienced favorable emergence relative to prior years’ reserve estimates in all of our segments during 2018. Development from the casualty segment totaled $33.3 million, inclusive of unallocated loss and adjustment expenses (ULAE). The largest amounts of favorable development came from accident years 2015 through 2017. We continued to experience emergence that was generally better than previously estimated. We attribute the favorable emergence to loss trends in most lines outperforming our long-term expectations. Further, we believe our underwriters’ risk selection contributed to the Company experiencing less loss cost inflation than originally anticipated.  The primary occurrence grouping had favorable development of $15.6 million, driven by our general liability product with $6.7 million of favorable development.  The excess occurrence grouping had favorable development of $21.4 million, with commercial insureds contributing $10.8 million and personal insureds contributing the remainder.  Claims made exposures had adverse development of $3.9 million driven by medical errors and omissions coverages.  Transportation had $0.5 million of favorable development.

Our marine product was the predominant driver of the favorable development in the property segment, accounting for $5.0 million of the $10.8 million total favorable development for the segment, inclusive of ULAE. Accident years 2015 through 2017 made the largest contribution. Our excess and surplus lines commercial property product and assumed reinsurance products also contributed $2.0 million and $2.8 million of favorable development, respectively. 

The surety segment experienced $5.9 million of favorable development, inclusive of ULAE. The majority of the favorable development came from the 2017 accident year, which served to offset the unfavorable development from accident years 2011 and 2016. Commercial and energy surety contributed favorable development of $4.6 million and $1.7 million, respectively. Miscellaneous surety experienced adverse development totaling $0.8 million.

2017.  We experienced favorable emergence relative to prior years’ reserve estimates in all of our segments during 2017. The casualty segment contributed $17.5 million in favorable development, inclusive of ULAE. Accident years 2014, 2015 and 2016 contributed significantly to the favorable development. This was predominantly caused by favorable frequency and severity trends that continued to be better than our long-term expectations. In addition, we believe this to be the result of our underwriters’ risk selection, which has mostly offset price declines and loss cost inflation. Nearly all of our casualty products contributed to the favorable development. Within the primary occurrence grouping, the general liability product contributed $4.6 million to our favorable development with all coverages contributing to the favorable development in 2017. Small commercial products were the second largest contributor with $3.2 million in favorable development. Within the excess occurrence grouping, personal umbrella and commercial excess were favorable by $1.1 million and $9.9 million, respectively. Within the claims made grouping, our executive products had favorable contributions of $4.4 million, while medical professional liability was adverse $3.7 million. Transportation was adverse $7.4 million for the year, but posted favorable experience during the last three quarters of the year.

The marine product was the primary driver of the favorable development in the property segment. Marine contributed $6.8 million of the $12.1 million total favorable property development, inclusive of ULAE. Accident years 2015 and 2016 contributed to the marine products’ favorable development. Commercial property was favorable $3.2 million.

The surety segment experienced favorable development of $9.3 million, inclusive of ULAE. The majority of the favorable development was from accident year 2016. Contract and commercial surety products were the main contributors with favorable development of $4.4 million and $3.5 million, respectively. Energy surety had favorable development of $1.5 million and miscellaneous surety had unfavorable development of $0.1 million.

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2016.  We experienced favorable emergence relative to prior years’ reserve estimates in all of our segments during 2016. The casualty segment contributed $32.4 million in favorable development, inclusive of ULAE, which is excluded from the incurred loss and loss adjustment expense tables above. Accident year 2015 contributed significantly to the favorable development, with accident years 2010 to 2014 also continuing to develop favorably. The favorable development in 2016 was smaller than 2015 but continued to reflect favorable frequency and severity trends. In addition, the risk selection by our underwriters continued to provide better results than estimated in our reserving process. Within the primary occurrence grouping, the general liability product contributed $17.6 million to our favorable development. Small commercial products were favorable by $6.2 million. Within the excess occurrence grouping, commercial excess was favorable by $13.8 million which was offset by adverse development in our personal umbrella product of $4.9 million. Within the claims made grouping, executive products contributed $14.7 million in favorable development and miscellaneous professional liability had $0.8 million of favorable development. Transportation experienced unfavorable development of $15.4 million as adverse commercial loss trends resulted in an increase in case reserves for accident years 2013 through 2015.

Marine contributed $2.1 million of the $4.8 million total favorable property development, inclusive of ULAE. Accident years 2013 through 2015 contributed to the marine products’ favorable development. Assumed property contributed $2.5 million of favorable development offsetting the unfavorable development of $0.2 million in other direct property products.

The surety segment experienced favorable development of $4.8 million, inclusive of ULAE. The majority of the favorable development was from accident year 2015, which offset the unfavorable development from accident years 2008 through 2011 and 2014. Commercial and energy surety products were the main contributors with favorable development of $1.7 million and $1.9 million, respectively. Miscellaneous surety had favorable development of $1.1 million and contract surety had favorable development of $0.1 million.

ENVIRONMENTAL, ASBESTOS AND MASS TORT EXPOSURES

We are subject to environmental site cleanup, asbestos removal and mass tort claims and exposures through our commercial excess, general liability and discontinued assumed casualty reinsurance lines of business. The majority of the exposure is in the excess layers of our commercial excess and assumed reinsurance books of business.

The following table represents paid and unpaid environmental, asbestos and mass tort claims data (including incurred but not reported losses) as of December 31, 2018, 2017 and 2016:

(in thousands)	2018		2017		2016
Loss and LAE Payments (Cumulative):
Gross	$	136,043	$	132,883	$	130,358
Ceded		(68,638)		(67,507)		(66,644)
Net	$	67,405	$	65,376	$	63,714
Unpaid Losses and LAE at End of Year:
Gross	$	24,262	$	28,042	$	28,815
Ceded		(5,373)		(5,715)		(4,987)
Net	$	18,889	$	22,327	$	23,828

Our environmental, asbestos and mass tort exposure is limited, relative to other insurers, as a result of entering the affected liability lines after the insurance industry had already recognized environmental and asbestos exposure as a problem and adopted appropriate coverage exclusions. The majority of our reserves are associated with products that went into runoff at least two decades ago. Some are for assumed reinsurance, some are for excess liability business and some followed from the acquisition of Underwriters Indemnity Company in 1999.

During 2018, inception to date incurred environmental, asbestos and mass tort losses decreased slightly.

While our environmental exposure is limited, the ultimate liability for this exposure is difficult to assess because of the extensive and complicated litigation involved in the settlement of claims and evolving legislation on issues such as joint and several liability, retroactive liability and standards of cleanup. Additionally, we participate primarily in the excess layers of coverage, where accurate estimates of ultimate loss are more difficult to derive than for primary coverage.

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7. INCOME TAXES

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are summarized as follows:

(in thousands)	2018		2017
Deferred tax assets:
Tax discounting of unpaid losses and settlement expenses	$	18,327	$	20,020
Unearned premium offset		17,864		16,528
Deferred compensation		2,700		1,435
Stock option expense		2,702		2,283
Other		616		578
Deferred tax assets before allowance	$	42,209	$	40,844
Less valuation allowance		—		—
Total deferred tax assets	$	42,209	$	40,844
Deferred tax liabilities:
Net unrealized appreciation of securities	$	22,177	$	51,448
Deferred policy acquisition costs		17,836		16,320
Discounting of unpaid losses and settlement expenses - TCJA implementation offset		5,203		9,466
Book/tax depreciation		3,133		3,159
Intangible assets		1,711		584
Undistributed earnings of unconsolidated investees		15,811		13,431
Other		576		204
Total deferred tax liabilities	$	66,447	$	94,612
Net deferred tax liability	$	(24,238)	$	(53,768)

Income tax expense (benefit) attributable to income from operations for the years ended December 31, 2018, 2017 and 2016, differed from the amounts computed by applying the U.S. federal tax rate of 21 percent, 35 percent and 35 percent, respectively, to pretax income from continuing operations as demonstrated in the following table:

(in thousands)	2018					2017					2016
Provision for income taxes at the statutory federal tax rates	$	14,192		21.0	%	$	29,606		35.0	%	$	54,979		35.0	%
Increase (reduction) in taxes resulting from:
Enactment of Tax Cuts and Jobs Act (TCJA)		(2,268)		(3.4)	%		(32,821)		(38.8)	%		—		—	%
Excess tax benefit on share-based compensation		(4,533)		(6.7)	%		(5,798)		(6.9)	%		—		—	%
Dividends received deduction		(775)		(1.1)	%		(2,025)		(2.4)	%		(2,216)		(1.4)	%
ESOP dividends paid deduction		(1,184)		(1.8)	%		(2,905)		(3.4)	%		(3,302)		(2.1)	%
Tax-exempt interest income		(1,795)		(2.7)	%		(4,671)		(5.5)	%		(4,263)		(2.7)	%
Unconsolidated investee dividends		—		—	%		(1,351)		(1.6)	%		(2,772)		(1.8)	%
Other items, net		(235)		(0.3)	%		(474)		(0.6)	%		(264)		(0.2)	%
Total	$	3,402		5.0	%	$	(20,439)		(24.2)	%	$	42,162		26.8	%

Our effective tax rates were 5.0 percent, -24.2 percent and 26.8 percent for 2018, 2017 and 2016, respectively. Effective rates are dependent upon components of pretax earnings and the related tax effects. While the effective rate was low in 2018, it was significantly lower in 2017 as a result of the impact of tax reform. Major factors contributing to the low rate in 2018 are the inclusion of unrealized losses from equity securities in pretax earnings in 2018, a reduced federal tax rate and adjustments to provisional deferred tax amounts recorded in 2017.

Among other provisions, the TCJA lowered the federal corporate tax rate from 35 percent to 21 percent effective January 1, 2018. Our deferred tax items were revalued as of year-end 2017 to reflect the lower rate, which reduced our net deferred tax liability and income tax expense by $32.8 million and decreased the effective tax rate by 38.8 percent.

Except for two aspects, the accounting for the tax effects of the enactment of the TCJA were completed as of December 31, 2017. The first provisional item recorded in 2017 was related to an expected disallowance of deductions for certain performance based compensation, including bonuses and stock options. At the time of enactment, there was a lack of clarity on

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whether some amounts could be grandfathered in as deductible. The Internal Revenue Service (IRS) and Treasury Department provided additional guidance and we were able to finalize the accounting in 2018 by recording a $2.3 million deferred tax benefit to restore the deferred tax assets related to those performance based compensation amounts. The second provisional item related to discount factors on loss reserves that the IRS had not yet published. The IRS published the factors in the fourth quarter of 2018 and we were able to complete the accounting for the effects of the enactment of the TCJA. While there was no net impact to the deferred tax amount that was recorded at December 31, 2017, we implemented the new discounting methodology and will recognize the adjustment ratably over the allowed eight-year period beginning in 2018.

 New accounting guidance required the excess tax benefit on share-based compensation to flow through income tax expense beginning in 2017. Prior to the adoption, excess tax benefits on share-based compensation were recorded directly to shareholders’ equity and had no impact on the effective tax rate. Due to the new accounting method, we recognized a $4.5 million and $5.8 million tax benefit in 2018 and 2017, respectively, which decreased the effective tax rate by 6.7 percent and 6.9 percent, respectively.

Our net earnings include equity in earnings of unconsolidated investees, Maui Jim and Prime. The investees do not have a policy or pattern of paying dividends. As a result, we record a deferred tax liability on the earnings at the recently revised corporate capital gains rate of 21 percent in anticipation of recovering our investments through means other than through the receipt of dividends, such as a sale. In the fourth quarter of 2017, Maui Jim gave notification that a $9.9 million dividend would be paid in January 2018. Even though no dividend was received in 2017, we were aware that the lower tax rate applicable to affiliated dividends (7.4 percent in 2018) would be applied when the dividend was paid in 2018 and we therefore recorded a $1.4 million tax benefit in 2017. We received a $9.9 million dividend from Maui Jim in the fourth quarter of 2016 and recognized a $2.8 million tax benefit from applying the lower tax rate applicable to affiliated dividends (7.0 percent in 2016), as compared to the corporate capital gains rate on which the deferred tax liabilities were based. Standing alone, the dividends resulted in a 1.6 percent and 1.8 percent reduction to the 2017 and 2016 effective tax rates, respectively. As no additional dividends were declared from unconsolidated investees in 2018, there was no impact to the 2018 effective tax rate.

Dividends paid to our Employee Stock Ownership Plan (ESOP) also result in a tax deduction. Dividends paid to the ESOP in 2018, 2017 and 2016 resulted in tax benefits of $1.2 million, $2.9 million and $3.3 million, respectively. These tax benefits reduced the effective tax rate for 2018, 2017 and 2016 by 1.8 percent, 3.4 percent and 2.1 percent, respectively.

We have recorded our deferred tax assets and liabilities using the statutory federal tax rate of 21 percent. We believe it is more likely than not that all deferred tax assets will be recovered, given the carry back availability as well as the results of future operations, which will generate sufficient taxable income to realize the deferred tax asset. In addition, we believe when these deferred items reverse in future years, our taxable income will be taxed at an effective rate of 21 percent.

Federal and state income taxes paid in 2018, 2017 and 2016, amounted to $16.4 million, $10.4 million and $26.9 million, respectively.

Although we are not currently under audit by the IRS, tax years 2015 through 2018 remain open and are subject to examination.

8. EMPLOYEE BENEFITS

EMPLOYEE STOCK OWNERSHIP, 401(K) AND INCENTIVE PLANS

We maintain ESOP, 401(k) and incentive plans covering executives, managers and associates. Funding of these plans is primarily dependent upon reaching predetermined levels of operating return on equity, combined ratio and Market Value Potential (MVP). MVP is a compensation model that measures components of comprehensive earnings against a minimum required return on our capital. Bonuses are earned as we generate earnings in excess of this required return. While some management incentive plans may be affected somewhat by other performance factors, the larger influence of corporate performance ensures that the interests of our executives, managers and associates align with those of our shareholders.

Our 401(k) plan allows voluntary contributions by employees and permits ESOP diversification transfers for employees meeting certain age and service requirements. We provide a basic 401(k) contribution of 3 percent of eligible compensation. Participants are 100 percent vested in both voluntary and basic contributions. Additionally, an annual discretionary profit-sharing contribution may be made to the ESOP and 401(k), subject to the achievement of certain overall financial goals and board approval. Profit-sharing contributions vest after three years of plan service.

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Our ESOP and 401(k) cover all employees meeting eligibility requirements. ESOP and 401(k) profit-sharing contributions are approved annually by our board of directors and are expensed in the year earned. ESOP and 401(k)-related expenses (basic and profit-sharing) were $8.8 million, $12.5 million and $11.7 million, for 2018, 2017 and 2016, respectively.

During 2018, the ESOP purchased 98,717 shares of RLI Corp. stock on the open market at an average price of $62.80 ($6.2 million) relating to the contribution for plan year 2017. Shares held by the ESOP as of December 31, 2018, totaled 2,985,390 and are treated as outstanding in computing our earnings per share. During 2017, the ESOP purchased 124,186 shares of RLI Corp. stock on the open market at an average price of $58.02 ($7.2 million) relating to the contribution for plan year 2016. During 2016, the ESOP purchased 112,608 shares of RLI Corp. stock on the open market at an average price of $64.20  ($7.2 million) relating to the contribution for plan year 2015. The above-mentioned ESOP purchases relate only to our annual contributions to the plan and do not include amounts or shares resulting from the reinvestment of dividends.

Annual awards are provided to executives, managers and associates through our incentive plans, provided certain financial and operational goals are met. Annual expenses for these incentive plans totaled $11.9 million, $19.7 million and $19.2 million for 2018, 2017 and 2016, respectively.

DEFERRED COMPENSATION

We maintain rabbi trusts for deferred compensation plans for directors, key employees and executive officers through which our shares are purchased. The employer stock in the plan is classified and accounted for as equity, in a manner consistent with the accounting for treasury stock.

In 2018, the trusts purchased 7,049 shares of our common stock on the open market at an average price of $68.36 ($0.5 million). In 2017, the trusts purchased 7,464 shares of our common stock on the open market at an average price of $58.66 ($0.4 million). In 2016, the trusts purchased 6,702 shares of our common stock on the open market at an average price of $61.61 ($0.4 million). At December 31, 2018, the trusts’ assets were valued at $36.2 million.

STOCK PLANS

Our RLI Corp. Long-Term Incentive Plan (2010 LTIP) was in place from 2010 to 2015. The 2010 LTIP provided for equity-based compensation, including stock options, up to a maximum of 4,000,000 shares of common stock (subject to adjustment for changes in our capitalization and other events). Between 2010 and 2015, we granted 2,878,000 stock options under the 2010 LTIP. The 2010 LTIP was replaced in 2015.

In 2015, our shareholders approved the 2015 RLI Corp. Long-Term Incentive Plan (2015 LTIP), which provides for equity-based compensation and replaced the 2010 LTIP. In conjunction with the adoption of the 2015 LTIP, effective May 7, 2015, options were no longer granted under the 2010 LTIP. Awards under the 2015 LTIP may be in the form of restricted stock, stock options (non-qualified only), stock appreciation rights, performance units as well as other stock-based awards. Eligibility under the 2015 LTIP is limited to employees and directors of the company or any affiliate. The granting of awards under the 2015 LTIP is solely at the discretion of the board of directors. The maximum number of shares of common stock available for distribution under the 2015 LTIP is 4,000,000 shares (subject to adjustment for changes in our capitalization and other events). Since the plan’s approval in 2015, we have granted 1,903,630 awards under the 2015 LTIP, including 455,055 in 2018.

Stock Options

Under the 2015 LTIP, as under the 2010 LTIP, we grant stock options for shares with an exercise price equal to the fair market value of the shares at the date of grant (subject to adjustments for changes in our capitalization, including special dividends and other events as set forth in such plans). Options generally vest and become exercisable ratably over a five-year period and expire eight years after grant.

For most participants, the requisite service period and vesting period will be the same. For participants who are retirement eligible, defined by the plan as those individuals whose age and years of service equals 75, the requisite service period is deemed to be met and options are immediately expensed on the date of grant. For participants who will become retirement eligible during the vesting period, the requisite service period over which expense is recognized is the period between the grant date and the attainment of retirement eligibility. Shares issued upon option exercise are newly issued shares.

Shares issued may be less than the number of shares actually exercised, as our plan allows net settlement to cover the option exercise price and taxes due upon option exercise. When options are exercised via net settlement, amounts withheld for

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taxes result in a decrease to shareholders’ equity and the degree of the impact is dependent on the level of intrinsic value (i.e. market value in excess of exercise price). During 2016, the number of option exercises facilitated via net settlement and the level of intrinsic value on those exercises resulted in a decrease to paid-in-capital, as the reduction from tax withholdings exceeded the impact of other share-based compensation activity. This was not the case in 2018 and 2017, and the impacts of share-based compensation increased paid-in-capital. Refer to our consolidated statements of shareholders’ equity to see the impact share-based compensation had on shareholders’ equity. Prior to the adoption of FASB ASU 2016-09 in 2017, shareholders’ equity was also impacted by corporate tax deductions allowed as a result of option exercises. This tax benefit offset our current tax liability and was recorded as an increase to paid-in-capital. Beginning in 2017, all tax effects related to share-based payments were required to be recorded in net earnings and directly impact our effective tax rate. See note 7 for the impact in 2018 and 2017. For 2016, refer to our consolidated statements of shareholders’ equity for the impact to paid-in capital from this tax benefit.

The following tables summarize option activity in 2018, 2017 and 2016:

				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2018	2,257,015	$	46.80
Options granted	432,000	$	64.91
Options exercised	(705,785)	$	36.81		$	24,304
Options canceled/forfeited	(18,350)	$	60.84
Outstanding options at December 31, 2018	1,964,880	$	54.24	5.25	$	29,317
Exercisable options at December 31, 2018	724,730	$	46.62	3.79	$	16,212

				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2017	2,207,110	$	40.90
Options granted	482,375	$	57.12
Options exercised	(390,870)	$	26.07		$	12,779
Options canceled/forfeited	(41,600)	$	48.30
Outstanding options at December 31, 2017	2,257,015	$	46.80	4.88	$	32,620
Exercisable options at December 31, 2017	975,055	$	38.66	3.25	$	21,780

				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2016	2,582,220	$	32.42
Options granted	440,750	$	63.54
Options exercised	(756,380)	$	24.87		$	31,328
Options canceled/forfeited	(59,480)	$	44.39
Outstanding options at December 31, 2016	2,207,110	$	40.90	4.93	$	49,531
Exercisable options at December 31, 2016	862,605	$	31.23	3.27	$	27,523

The majority of our stock options are granted annually at our regular board meeting in May. In addition, options are approved at the May meeting for quarterly grants to certain retirement eligible employees. Since stock option grants to retirement eligible employees are fully expensed when granted, the approach allows for a more even expense distribution throughout the year.

In 2018, 432,000 options were granted with an average exercise price of $64.91 and an average fair value of $10.58. Of these grants, 330,750 were granted at the board meeting in May with a calculated fair value of $10.31. We recognized $4.5 million of expense during 2018 related to options vesting. Since options granted under our plan are non-qualified, we recorded a deferred tax

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benefit of $0.9 million related to this compensation expense. Total unrecognized compensation expense relating to outstanding and unvested options was $5.6 million, which will be recognized over the remainder of the vesting period.

In 2017, 482,375 options were granted with an average exercise price of $57.12 and an average fair value of $8.00. Of these grants, 384,750 were granted at the board meeting in May with a calculated fair value of $7.91. We recognized $4.4 million of expense during 2017 related to options vesting. Since options granted under our plan are non-qualified, we recorded a deferred tax benefit of $1.5 million related to this compensation expense. Total unrecognized compensation expense relating to outstanding and unvested options was $5.7 million, which will be recognized over the remainder of the vesting period.

In 2016, 440,750 options were granted with an average exercise price of $63.54 and an average fair value of $11.38. Of these grants, 345,750 were granted at the board meeting in May with a calculated fair value of $11.42. We recognized $4.1 million of expense during 2016 related to options vesting. Since options granted under our plan are non-qualified, we recorded a deferred tax benefit of $1.4 million related to this compensation expense. Total unrecognized compensation expense relating to outstanding and unvested options was $6.2 million, which will be recognized over the remainder of the vesting period.

The fair value of options were estimated using a Black-Scholes based option pricing model with the following weighted-average grant-date assumptions and weighted-average fair values as of December 31:

	2018			2017			2016
Weighted-average fair value of grants	$	10.58		$	8.00		$	11.38
Risk-free interest rates		2.72	%		1.90	%		1.21	%
Dividend yield		2.98	%		3.60	%		1.61	%
Expected volatility		22.87	%		22.95	%		23.06	%
Expected option life		5.07	years		5.05	years		5.04	years

The risk-free rate was determined based on U.S. treasury yields that most closely approximated the option’s expected life. The dividend yield for 2018 and 2017 was determined based on the average annualized quarterly dividends paid during the most recent five-year period and incorporated a consideration for special dividends paid in recent history. The dividend yield in 2016 was calculated based on the average annualized dividends paid during the most recent five-year period, exclusive of consideration for special dividends. The expected volatility was calculated based on the median of the rolling volatilities for the expected life of the options. The expected option life was determined based on historical exercise behavior and the assumption that all outstanding options will be exercised at the midpoint of the current date and remaining contractual term, adjusted for the demographics of the current year’s grant.

Restricted Stock Units

In addition to stock options, restricted stock units (RSUs) are granted with a value equal to the closing stock price of the Company’s stock on the dates the shares are granted. Generally, these units have a three-year cliff vesting. When participants terminate employment with the Company after having met the definition of retirement under the 2015 LTIP, defined as those individuals whose age and years of service equals 75, the RSUs will become fully vested. In addition, RSUs have dividend participation which accrue as additional units and are settled with granted stock units at the end of the vesting period.

As of December 31, 2018,  30,075 RSUs have been granted to employees under the 2015 LTIP, including 14,625 during 2018. Due to dividend participation on RSUs, which accrue as additional units, 30,567 employee RSUs were outstanding as of December 31, 2018. We recognized $0.6 million and $0.4 million of expense on these units during 2018 and 2017, respectively. Total unrecognized compensation expense relating to outstanding and unvested employee RSUs was $0.7 million, which will be recognized over the remainder of the vesting period.

In 2018, each outside director received RSUs with a fair market value of $50,000 on the date of grant as part of annual director compensation. Director RSUs vest one year from the date of grant. As of December 31, 2018, 8,430 restricted stock units were granted to directors under the 2015 LTIP. Due to dividend participation on RSUs, which accrue as additional units, 8,629 director RSUs were outstanding as of December 31, 2018. We recognized $0.3 million of compensation expense on these units during 2018. Total unrecognized compensation expense relating to outstanding and unvested director RSUs was $0.2 million, which will be recognized over the remainder of the vesting period.

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9. STATUTORY INFORMATION AND DIVIDEND RESTRICTIONS

The statutory financial statements of our three insurance companies are presented on the basis of accounting practices prescribed or permitted by the Illinois Department of Insurance (IDOI), which has adopted the NAIC statutory accounting principles as the basis of its statutory accounting principles. We do not use any permitted statutory accounting principles that differ from NAIC prescribed statutory accounting principles. In converting from statutory to GAAP, typical adjustments include deferral of policy acquisition costs, the inclusion of statutory non-admitted assets and the inclusion of net unrealized holding gains or losses in shareholders’ equity relating to fixed income securities.

The NAIC has risk based capital (RBC) requirements for insurance companies to calculate and report information under a risk-based formula, which measures statutory capital and surplus needs based upon a regulatory definition of risk relative to the company’s balance sheet and mix of products. As of December 31, 2018, each of our insurance subsidiaries had an RBC amount in excess of the authorized control level RBC, as defined by the NAIC. RLI Insurance Company (RLI Ins.), our principal insurance company subsidiary, had an authorized control level RBC of $170.9 million, $157.7 million and $127.0 million as of December 31, 2018, 2017 and 2016, respectively, compared to actual statutory capital and surplus of $829.8 million, $864.6 million and $860.0 million, respectively, for these same periods.

Year-end statutory surplus for 2018 presented in the table below includes $132.8 million of RLI Corp. stock (cost basis of $64.6 million) held by Mt. Hawley Insurance Company, compared to $106.9 million and $104.4 million in 2017 and 2016, respectively. The Securities Valuation Office provides specific guidance for valuing this investment, which is eliminated in our GAAP consolidated financial statements.

The following table includes selected information for our insurance subsidiaries for the year ending and as of December 31:

(in thousands)	2018		2017		2016
Consolidated net income, statutory basis	$	135,791	$	72,889	$	128,165
Consolidated surplus, statutory basis	$	829,775	$	864,554	$	859,976

As discussed in note 1.A., our three insurance companies are subsidiaries of RLI Corp, with RLI Ins. as the first-level, or principal, insurance subsidiary. At the holding company (RLI Corp.) level, we rely largely on dividends from our insurance company subsidiaries to meet our obligations for paying principal and interest on outstanding debt, corporate expenses and dividends to RLI Corp. shareholders. As discussed further below, dividend payments to RLI Corp. from our principal insurance subsidiary are restricted by state insurance laws as to the amount that may be paid without prior approval of the insurance regulatory authorities of Illinois. As a result, we may not be able to receive dividends from such subsidiary at times and in amounts necessary to pay desired dividends to RLI Corp. shareholders. On a GAAP basis, as of December 31, 2018, our holding company had $806.8 million in equity. This includes amounts related to the equity of our insurance subsidiaries, which is subject to regulatory restrictions under state insurance laws. The unrestricted portion of holding company net assets is comprised primarily of investments and cash, including $63.1 million in liquid assets,  which more than covers our annual holding company expenditures. Unrestricted funds at the holding company are available to fund debt interest, general corporate obligations and regular dividend payments to our shareholders. If necessary, the holding company also has other potential sources of liquidity that could provide for additional funding to meet corporate obligations or pay shareholder dividends, which include a revolving line of credit, as well as access to capital markets.

Ordinary dividends, which may be paid by our principal insurance subsidiary without prior regulatory approval, are subject to certain limitations based upon statutory income, surplus and earned surplus. The maximum ordinary dividend distribution from our principal insurance subsidiary in a rolling 12-month period is limited by Illinois law to the greater of 10 percent of RLI Ins. policyholder surplus, as of December 31 of the preceding year, or the net income of RLI Ins. for the 12-month period ending December 31 of the preceding year. Ordinary dividends are further restricted by the requirement that they be paid from earned surplus. In 2018, 2017 and 2016, our principal insurance subsidiary paid ordinary dividends totaling $13.0 million, $107.0 million and $123.6 million, respectively, to RLI Corp. Any dividend distribution in excess of the ordinary dividend limits is deemed extraordinary and requires prior approval from the IDOI. In 2018, our principal insurance subsidiary sought and received regulatory approval prior to the payment of extraordinary dividends totaling $110.0 million. No extraordinary dividends were paid in 2017 or 2016. Given the amount of dividends paid during the prior rolling 12-month period, the net assets of our principal insurance subsidiary are restricted until the fourth quarter of 2019 and cannot be distributed to RLI Corp. without prior approval of the IDOI. In addition to restrictions from our principal subsidiary’s insurance regulator, we also consider internal models and how capital adequacy is defined by our rating agencies in determining amounts available for distribution. However, as discussed above, RLI Corp. had the necessary amount of

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unrestricted liquid net assets on hand at December 31, 2018 to cover normal annual holding company expenditures as they are incurred and become payable in 2019. 

10. COMMITMENTS AND CONTINGENT LIABILITIES

Other Litigation

We are party to numerous claims, losses and litigation matters that arise in the normal course of our business. Many of such claims, losses or litigation matters involve claims under policies that we underwrite as an insurer. We believe that the resolution of these claims and losses will not have a material adverse effect on our financial condition, results of operations or cash flows. We are also involved in various other legal proceedings and litigation unrelated to our insurance business that arise in the ordinary course of business operations. Management believes that any liabilities that may arise as a result of these legal matters will not have a material adverse effect on our financial condition, results of operations or cash flows.

Carriage Hill Associates Coverage Dispute

As reported in the Company’s Form 10-Q filed for the second and third quarters of 2018, Carriage Hill Associates of Charleston, LLC and certain other plaintiffs (collectively, “Plaintiffs”) filed a complaint in the Court of Common Pleas (the “Court”) for the Ninth Judicial Circuit of Berkeley County, South Carolina in December 2010 against Mt. Hawley Insurance Company (“Mt. Hawley”), a subsidiary of our principal subsidiary, RLI Insurance Company, relating to a coverage dispute. The complaint sought, among other things, compensatory damages, punitive damages and attorneys’ fees.

On May 25, 2018, the Court issued an Order finding in favor of Plaintiffs (the “Order”). The Court held that Mt. Hawley was responsible for compensatory damages relating to the alleged breach of duty to defend, breach of duty to indemnify and breach of duty of good faith totaling $21.7 million. The Court further held that Plaintiffs were entitled to attorneys’ fees and costs and that punitive damages were appropriate, with a hearing to be conducted at a later date to determine the amount of attorney fees and costs, and punitive damages.

Mt. Hawley vigorously contested all the claims against it in this matter and filed certain post-trial motions seeking to, among other things, vacate and withdraw the Order. As the result of Court-recommended mediation between the parties, all of the claims in this matter among all parties were settled on a confidential basis for an amount that did not have a material impact on the Company’s financial statements. On November 15, 2018, the Court vacated and withdrew the Order and the entire matter was dismissed with prejudice on November 28, 2018.

Commitments

We have operating lease obligations for regional office facilities. These leases expire in various years through 2035. Expenses associated with these leases totaled $6.9 million in 2018, $6.8 million in 2017 and $6.4 million in 2016. Minimum future rental payments under non-cancellable leases are as follows:

(in thousands)
2019	$	5,911
2020		6,019
2021		5,924
2022		5,884
2023		4,459
2024-2035		3,968
Total minimum future rental payments	$	32,165

As of December 31, 2018, we also had $18.8 million of unfunded commitments related to our investments in private funds and $7.4 million of unfunded commitments related to our low income housing tax credit investments. See note 2 for more information on these investments.

11. OPERATING SEGMENT INFORMATION

The segments of our insurance operations include casualty, property and surety. The casualty portion of our business consists largely of commercial excess, personal umbrella, general liability, transportation and executive products coverages, as

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well as package business and other specialty coverages, such as professional liability and workers’ compensation for office-based professionals. We offer fidelity and crime coverage for commercial insureds and select financial institutions and medical and healthcare professional liability coverage in the excess and surplus market. We also assume a limited amount of hard-to-place risks through a quota share reinsurance agreement. The casualty business is subject to the risk of estimating losses and related loss reserves because the ultimate settlement of a casualty claim may take several years to fully develop. The casualty segment is also subject to inflation risk and may be affected by evolving legislation and court decisions that define the extent of coverage and the amount of compensation due for injuries or losses.

Our property segment is comprised primarily of commercial fire, earthquake, difference in conditions and marine coverages. We also offer select personal lines policies, including homeowners’ coverages. Our property reinsurance and recreational vehicle products are in runoff after we began curtailing offerings at the end of 2015 and 2016, respectively. Property insurance results are subject to the variability introduced by perils such as earthquakes, fires and hurricanes. Our major catastrophe exposure is to losses caused by earthquakes, primarily on the West Coast. Our second largest catastrophe exposure is to losses caused by wind storms to commercial properties throughout the Gulf and East Coast, as well as to homes we insure in Hawaii. We limit our net aggregate exposure to a catastrophic event by minimizing the total policy limits written in a particular region, purchasing reinsurance and maintaining policy terms and conditions throughout market cycles. We also use computer-assisted modeling techniques to provide estimates that help the Company carefully manage the concentration of risks exposed to catastrophic events.

The surety segment specializes in writing small to large-sized commercial and contract surety coverages, as well as those for the energy, petrochemical and refining industries. We also offer miscellaneous bonds including license and permit, notary and court bonds. Often, our surety coverages involve a statutory requirement for bonds. While these bonds typically maintain a relatively low loss ratio, losses may fluctuate due to adverse economic conditions affecting the financial viability of our insureds. The contract surety product guarantees the construction work of a commercial contractor for a specific project. Generally, losses occur due to the deterioration of a contractor’s financial condition. This line has historically produced marginally higher loss ratios than other surety lines during economic downturns.

Net investment income consists of the interest and dividend income streams from our investments in fixed income and equity securities. Interest and general corporate expenses include the cost of debt, other director and shareholder relations costs and other compensation-related expenses incurred for the benefit of the corporation, but not attributable to the operations of our insurance segments. Investee earnings represent our share in Maui Jim and Prime earnings. We own 40 percent of Maui Jim, a privately-held company which operates in the sunglass and optical goods industries, and 23 percent of Prime Holdings Insurance Services, Inc., a privately-held insurance company which specializes in hard-to-place risks in the excess and surplus market and has recently expanded into certain coverages in the admitted market. Our investment in Maui Jim, which is carried at the holding company, is unrelated to our core insurance operations.

The following table summarizes our segment data based on the internal structure and reporting of information as it is used by management. The net earnings of each segment are before taxes and include revenues (if applicable), direct product or segment costs (such as commissions and claims costs), as well as allocated support costs from various support departments. While depreciation and amortization charges have been included in these measures via our expense allocation system, the related assets are not allocated for management use and, therefore, are not included in this schedule.

REVENUES
(in thousands)	2018		2017		2016
Casualty	$	523,472	$	478,603	$	454,843
Property		149,261		138,346		152,167
Surety		118,633		120,988		121,598
Net premiums earned	$	791,366	$	737,937	$	728,608
Net investment income		62,085		54,876		53,075
Net realized gains		63,407		4,411		34,645
Net unrealized losses on equity securities		(98,735)		—		—
Total	$	818,123	$	797,224	$	816,328

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INSURANCE EXPENSES
(in thousands)	2018		2017		2016
Loss and settlement expenses:
Casualty	$	329,763	$	305,679	$	259,907
Property		83,822		85,027		71,350
Surety		14,608		10,878		18,521
Total net loss and settlement expenses	$	428,193	$	401,584	$	349,778
Policy acquisition costs:
Casualty	$	151,007	$	136,135	$	128,566
Property		51,830		51,070		54,167
Surety		64,901		65,310		66,879
Total policy acquisition costs	$	267,738	$	252,515	$	249,612
Other insurance expenses:
Casualty	$	31,562	$	32,885	$	30,040
Property		12,725		14,108		13,819
Surety		9,516		10,001		9,234
Total other insurance expenses	$	53,803	$	56,994	$	53,093
Total	$	749,734	$	711,093	$	652,483

NET EARNINGS (LOSSES)
(in thousands)	2018		2017		2016
Casualty	$	11,140	$	3,904	$	36,329
Property		884		(11,859)		12,832
Surety		29,608		34,799		26,964
Net underwriting income	$	41,632	$	26,844	$	76,125
Net investment income		62,085		54,876		53,075
Net realized gains		63,407		4,411		34,645
Net unrealized losses on equity securities		(98,735)		—		—
General corporate expense and interest on debt		(16,864)		(18,766)		(17,596)
Equity in earnings of unconsolidated investees		16,056		17,224		10,833
Total earnings before incomes taxes	$	67,581	$	84,589	$	157,082
Income tax expense (benefit)	$	3,402	$	(20,439)	$	42,162
Total	$	64,179	$	105,028	$	114,920

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The following table further summarizes revenues by major product type within each segment:

NET PREMIUMS EARNED	Year ended December 31,
(in thousands)	2018		2017		2016
CASUALTY
Commercial excess and personal umbrella	$	124,350	$	115,543	$	111,079
General liability		93,928		90,283		86,853
Commercial transportation		81,053		78,061		81,402
Professional services		79,951		78,508		75,872
Small commercial		51,519		49,601		45,660
Executive products		21,326		18,086		18,755
Medical professional liability		16,042		17,072		17,449
Other casualty		55,303		31,449		17,773
Total	$	523,472	$	478,603	$	454,843
PROPERTY
Commercial property	$	71,501	$	63,117	$	68,165
Marine		59,795		50,931		48,301
Specialty personal		16,901		20,793		24,981
Other property		1,064		3,505		10,720
Total	$	149,261	$	138,346	$	152,167
SURETY
Miscellaneous	$	46,968	$	47,237	$	46,235
Contract		28,196		28,573		28,240
Commercial		26,751		27,625		29,105
Energy		16,718		17,553		18,018
Total	$	118,633	$	120,988	$	121,598
Grand total	$	791,366	$	737,937	$	728,608

12. UNAUDITED INTERIM FINANCIAL INFORMATION

Select unaudited quarterly information is as follows:

(in thousands, except per share data)	First		Second		Third		Fourth		Year
2018
Net premiums earned	$	190,027	$	196,522	$	200,815	$	204,002	$	791,366
Net investment income		14,232		14,577		16,314		16,962		62,085
Net realized gains (losses)		8,404		20,849		18,647		15,507		63,407
Net unrealized gains (losses) on equity securities		(26,772)		(12,611)		4,848		(64,200)		(98,735)
Earnings (losses) before income taxes		14,378		39,562		46,349		(32,708)		67,581
Net earnings (loss)		12,216		33,251		39,372		(20,660)		64,179
Basic earnings per share(1)	$	0.28	$	0.75	$	0.89	$	(0.46)	$	1.45
Diluted earnings per share(1)	$	0.27	$	0.74	$	0.88	$	(0.46)	$	1.43
2017
Net premiums earned	$	183,285	$	184,331	$	182,025	$	188,296	$	737,937
Net investment income		13,005		13,238		14,187		14,446		54,876
Net realized gains (losses)		624		(1,359)		35		5,111		4,411
Net unrealized gains (losses) on equity securities		—		—		—		—		—
Earnings (losses) before income taxes		26,443		34,036		(862)		24,972		84,589
Net earnings (loss)		19,828		26,208		1,734		57,258		105,028
Basic earnings per share(1)	$	0.45	$	0.60	$	0.04	$	1.30	$	2.39
Diluted earnings per share(1)	$	0.45	$	0.59	$	0.04	$	1.29	$	2.36

(1) Since the weighted-average shares for the quarters are calculated independently of the weighted-average shares for the year, quarterly earnings per share may not total to annual earnings per share. 

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and Board of Directors of RLI Corp.:

Opinions on the Consolidated Financial Statements and Internal Control Over Financial Reporting

We have audited the accompanying consolidated balance sheets of RLI Corp. and subsidiaries (the Company) as of December 31, 2018 and 2017, the related consolidated statements of earnings and comprehensive earnings, shareholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2018, and the related notes and financial statement schedules I to VI (collectively, the consolidated financial statements). We also have audited the Company’s internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2018 and 2017, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2018, in conformity with U.S. generally accepted accounting principles. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2018 based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

Change in Accounting Principle

As discussed in Note 1 to the consolidated financial statements, the Company has changed its method of accounting for equity investments in 2018 due to the adoption of ASU 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.

Basis for Opinions

The Company’s management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Report on Controls and Procedures. Our responsibility is to express an opinion on the Company’s consolidated financial statements and an opinion on the Company’s internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to

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permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ KPMG LLP

We have served as the Company’s auditor since 1983.

Chicago, Illinois

February 22, 2019

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Item 9.Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

There were no changes in accountants or disagreements with accountants on any matters of accounting principles or practices or financial statement disclosure.

Item 9A.Controls and Procedures

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of our disclosure controls and procedures, as such term is defined under Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the Exchange Act). Based on this evaluation, our principal executive officer and our principal financial officer concluded that our disclosure controls and procedures were effective as of December 31, 2018.

Management’s Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f). Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the framework in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on our evaluation under the framework in Internal Control — Integrated Framework (2013), our management concluded that our internal control over financial reporting was effective as of December 31, 2018.

Our internal control over financial reporting as of December 31, 2018 has been audited by KPMG LLP, an independent registered public accounting firm, as stated in their report on page 108 of this report.

There was no change in our internal control over financial reporting during our fourth fiscal quarter ended December 31, 2018 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Item 9B. Other Information

None

PART III

Items 10 to 14.

Items 10 through 14 (inclusive) of this Part III are not included herein because the Company will file a definitive Proxy Statement with the SEC that will include the information required by such Items, and such information is incorporated herein by reference. The Company’s Proxy Statement will be filed with the SEC and delivered to stockholders in connection with the Annual Meeting of Shareholders to be held on May 2, 2019, and the information under the following captions is included in such incorporation by reference: “Share Ownership of Certain Beneficial Owners,” “Board Meetings and Compensation,” “Compensation Discussion & Analysis,” “Executive Compensation,” “Equity Compensation Plan Information,” “Executive Management,” “Corporate Governance and Board Matters,” “Audit Committee Report” and “Proposal three: Ratification of Selection of Independent Registered Public Accounting Firm.”

PART IV

Item 15.Exhibits and Financial Statement Schedules

(a) (l-2) See Item 8 for Consolidated Financial Statements included in this report.

(3) Exhibits. See Exhibit Index on pages 121-122.

(b) Exhibits. See Exhibit Index on pages 121-122.

(c) Financial Statement Schedules. See Index to Financial Statement Schedules on page 111.

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INDEX TO FINANCIAL STATEMENT SCHEDULES

	Reference (Page)
Data Submitted Herewith:
Schedules:
I. Summary of Investments - Other than Investments in Related Parties at December 31, 2018.	112
II. Condensed Financial Information of Registrant, as of and for the three years ended December 31, 2018.	113-115
III. Supplementary Insurance Information, as of and for the three years ended December 31, 2018.	116-117
IV. Reinsurance for the three years ended December 31, 2018.	118
V. Valuation and Qualifying Accounts for the three years ended December 31, 2018.	119
VI. Supplementary Information Concerning Property-Casualty Insurance Operations for the three years ended December 31, 2018.	120

Schedules other than those listed are omitted for the reason that they are not required, are not applicable or that equivalent information has been included in the financial statements, and notes thereto, or elsewhere herein.

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RLI CORP. AND SUBSIDIARIES

SCHEDULE I—SUMMARY OF INVESTMENTS—OTHER THAN INVESTMENTS

IN RELATED PARTIES

December 31, 2018

Column A	Column B		Column C		Column D
					Amount at
(in thousands)					which shown in
Type of Investment	Cost (1)		Fair Value		the balance sheet
Fixed maturities:
Bonds:
Available-for-sale:
U.S. Government	$	199,982	$	200,229	$	200,229
U.S. Agency		31,716		31,904		31,904
Non-U.S. Government & Agency		8,170		7,639		7,639
Agency MBS		402,992		395,253		395,253
ABS/CMBS*		137,224		136,723		136,723
Corporate		681,909		668,679		668,679
Municipal		314,472		320,088		320,088
Total available-for-sale	$	1,776,465	$	1,760,515	$	1,760,515
Total fixed maturities	$	1,776,465	$	1,760,515	$	1,760,515
Equity securities:
Common stock:
Ind Misc & all other	$	98,879	$	177,040	$	177,040
ETFs (Ind/misc)		121,494		163,443		163,443
Total equity securities	$	220,373	$	340,483	$	340,483
Cash & short-term investments		41,690		41,690		41,690
Other invested assets		51,760		51,542		51,542
Total investments and cash	$	2,090,288	$	2,194,230	$	2,194,230

*Non-agency asset-backed & commercial mortgage-backed

Note: See notes 1E and 2 of Notes to Consolidated Financial Statements. See also the accompanying report of independent registered public accounting firm on page 108 of this report.

(1) Original cost of equity securities and, as to fixed maturities, original cost reduced by repayments and adjusted for amortization of premiums or accrual of discounts.

112

RLI CORP. AND SUBSIDIARIES

SCHEDULE II—CONDENSED FINANCIAL INFORMATION OF REGISTRANT

(PARENT COMPANY)

CONDENSED BALANCE SHEETS

December 31,

(in thousands, except share data)	2018		2017
ASSETS
Cash	$	3,214	$	204
Short-term investments, at cost which approximates fair value		—		70
Accounts receivable, affiliates		—		1,057
Investments in subsidiaries		828,806		912,515
Investments in unconsolidated investee		79,521		77,720
Fixed income:
Available-for-sale, at fair value (amortized cost - $58,812 in 2018 and $23,184 in 2017)		59,878		23,210
Property and equipment, at cost, net of accumulated depreciation of $1,494 in 2018 and $1,426 in 2017		1,914		1,982
Income taxes receivable - current		—		1,542
Other assets		547		156
Total assets	$	973,880	$	1,018,456
LIABILITIES AND SHAREHOLDERS’ EQUITY
Liabilities:
Accounts payable, affiliates	$	130	$	—
Income taxes payable - current		32		—
Income taxes - deferred		15,081		13,207
Bonds payable, long-term debt		149,115		148,928
Interest payable, long-term debt		2,153		2,153
Other liabilities		527		570
Total liabilities	$	167,038	$	164,858
Shareholders’ equity:
Common stock ($0.01 par value in 2018 and $1.00 par value in 2017)
(100,000,000 share authorized, 67,434,257 shares issued and 44,504,043 shares outstanding in 2018)
(100,000,000 share authorized, 67,078,569 shares issued and 44,148,355 shares outstanding in 2017)	$	674	$	67,079
Paid-in capital		305,660		233,077
Accumulated other comprehensive earnings, net of tax		(14,572)		157,919
Retained earnings		908,079		788,522
Deferred compensation		8,354		8,640
Treasury stock, at cost (22,930,214 shares in 2018 and 2017)		(401,353)		(401,639)
Total shareholders’ equity	$	806,842	$	853,598
Total liabilities and shareholders’ equity	$	973,880	$	1,018,456

See Notes to Consolidated Financial Statements. See also the accompanying report of independent registered public accounting firm on page 108 of this report.

113

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SCHEDULE II—CONDENSED FINANCIAL INFORMATION OF REGISTRANT

(PARENT COMPANY)—(continued)

CONDENSED STATEMENTS OF EARNINGS AND COMPREHENSIVE EARNINGS

Years ended December 31,

(in thousands)	2018		2017		2016
Net investment income	$	648	$	647	$	942
Net realized losses		(142)		(36)		(360)
Equity in earnings of unconsolidated investee		12,471		14,436		9,764
Selling, general and administrative expenses		(9,427)		(11,340)		(10,170)
Interest expense on debt		(7,437)		(7,426)		(7,426)
Loss before income taxes	$	(3,887)	$	(3,719)	$	(7,250)
Income tax benefit		(2,359)		(16,601)		(8,467)
Net earnings (loss) before equity in net earnings of subsidiaries	$	(1,528)	$	12,882	$	1,217
Equity in net earnings of subsidiaries		65,707		92,146		113,703
Net earnings	$	64,179	$	105,028	$	114,920
Other comprehensive income (loss), net of tax
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during the period	$	710	$	21	$	308
Less: reclassification adjustment for gains (losses) included in net earnings		112		6		(131)
Other comprehensive income - parent only	$	822	$	27	$	177
Equity in other comprehensive earnings (loss) of subsidiaries/investees		(34,819)		35,282		(1,341)
Other comprehensive earnings (loss)	$	(33,997)	$	35,309	$	(1,164)
Comprehensive earnings	$	30,182	$	140,337	$	113,756

See Notes to Consolidated Financial Statements. See also the accompanying report of independent registered public accounting firm on page 108 of this report.

114

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SCHEDULE II—CONDENSED FINANCIAL INFORMATION OF REGISTRANT

(PARENT COMPANY)—(continued)

CONDENSED STATEMENTS OF CASH FLOWS

Years ended December 31,

(in thousands)	2018		2017		2016
Cash flows from operating activities
Earnings before equity in net earnings of subsidiaries	$	(1,528)	$	12,882	$	1,217
Adjustments to reconcile net losses to net cash provided by (used in) operating activities:
Net realized losses		142		36		360
Depreciation		68		77		196
Other items, net		(471)		595		560
Change in:
Affiliate balances receivable/payable		1,187		(930)		(535)
Federal income taxes		3,430		(6,874)		9,762
Stock option excess tax benefit		—		—		(9,576)
Changes in investment in unconsolidated investee:
Undistributed earnings		(12,471)		(14,436)		(9,764)
Dividends received		9,900		—		9,900
Net cash provided by (used in) operating activities	$	257	$	(8,650)	$	2,120
Cash flows from investing activities
Purchase of:
Fixed income, available-for-sale	$	(73,812)	$	(5,773)	$	(12,844)
Short-term investments, net		—		(47)		—
Sale of:
Fixed income, available-for-sale		12,056		24,771		4,981
Short-term investments, net		70		—		63
Property and equipment		—		128		—
Call or maturity of:
Fixed income, available-for-sale		75,662		3,499		6,859
Cash dividends received-subsidiaries		73,363		107,000		123,600
Net cash provided by investing activities	$	87,339	$	129,578	$	122,659
Cash flows from financing activities
Stock option excess tax benefit	$	—	$	—	$	9,576
Proceeds from stock option exercises		6,076		3,502		(741)
Cash dividends paid		(90,662)		(124,247)		(133,771)
Net cash used in financing activities	$	(84,586)	$	(120,745)	$	(124,936)
Net (decrease) increase in cash	$	3,010	$	183	$	(157)
Cash at beginning of year		204		21		178
Cash at end of year	$	3,214	$	204	$	21

Interest paid on outstanding debt amounted to $7.3 million for 2018, 2017 and 2016, respectively. See Notes to Consolidated Financial Statements. See also the accompanying report of independent registered public accounting firm on page 108 of this report.

115

RLI CORP. AND SUBSIDIARIES

SCHEDULE III—SUPPLEMENTARY INSURANCE INFORMATION

As of and for the years ended December 31, 2018, 2017 and 2016

									Incurred losses
	Deferred policy		Unpaid losses		Unearned		Net		and settlement
	acquisition		and settlement		premiums,		premiums		expenses
(in thousands)	costs		expenses, gross		gross		earned		current year
Year ended December 31, 2018
Casualty segment	$	50,040	$	1,283,204	$	330,836	$	523,472	$	363,015
Property segment		14,090		134,822		93,032		149,261		94,635
Surety segment		20,804		43,322		72,637		118,633		20,493
RLI Insurance Group	$	84,934	$	1,461,348	$	496,505	$	791,366	$	478,143
Year ended December 31, 2017
Casualty segment	$	44,358	$	1,127,787	$	296,751	$	478,603	$	323,141
Property segment		13,029		107,304		84,010		138,346		97,161
Surety segment		20,329		36,412		70,688		120,988		20,150
RLI Insurance Group	$	77,716	$	1,271,503	$	451,449	$	737,937	$	440,452
Year ended December 31, 2016
Casualty segment	$	39,131	$	1,021,506	$	276,096	$	454,843	$	292,308
Property segment		13,115		76,989		84,425		152,167		76,143
Surety segment		20,901		40,842		73,256		121,598		23,321
RLI Insurance Group	$	73,147	$	1,139,337	$	433,777	$	728,608	$	391,772

NOTE 1: Investment income is not allocated to the segments, therefore net investment income has not been provided.

See the accompanying report of independent registered public accounting firm on page 108 of this report.

116

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SCHEDULE III—SUPPLEMENTARY INSURANCE INFORMATION

(continued)

As of and for the years ended December 31, 2018, 2017 and 2016

	Incurred
	losses and
	settlement		Policy		Other		Net
	expenses		acquisition		operating		premiums
(in thousands)	prior year		costs		expenses		written
Year ended December 31, 2018
Casualty segment	$	(33,252)	$	151,007	$	31,562	$	547,177
Property segment		(10,813)		51,830		12,725		155,601
Surety segment		(5,885)		64,901		9,516		120,397
RLI Insurance Group	$	(49,950)	$	267,738	$	53,803	$	823,175
Year ended December 31, 2017
Casualty segment	$	(17,462)	$	136,135	$	32,885	$	494,649
Property segment		(12,134)		51,070		14,108		137,031
Surety segment		(9,272)		65,310		10,001		118,174
RLI Insurance Group	$	(38,868)	$	252,515	$	56,994	$	749,854
Year ended December 31, 2016
Casualty segment	$	(32,401)	$	128,566	$	30,040	$	470,082
Property segment		(4,793)		54,167		13,819		149,170
Surety segment		(4,800)		66,879		9,234		121,700
RLI Insurance Group	$	(41,994)	$	249,612	$	53,093	$	740,952

See the accompanying report of independent registered public accounting firm on page 108 of this report.

117

RLI CORP. AND SUBSIDIARIES

SCHEDULE IV—REINSURANCE

Years ended December 31, 2018, 2017 and 2016

									Percentage
			Ceded to		Assumed				of amount
	Direct		other		from other		Net		assumed
(in thousands)	amount		companies		companies		amount		to net
2018
Casualty segment	$	578,643	$	96,639	$	41,468	$	523,472	7.9	%
Property segment		193,855		44,634		40		149,261	0.0	%
Surety segment		123,736		5,521		418		118,633	0.4	%
RLI Insurance Group premiums earned	$	896,234	$	146,794	$	41,926	$	791,366	5.3	%
2017
Casualty segment	$	536,085	$	86,190	$	28,708	$	478,603	6.0	%
Property segment		172,668		37,607		3,285		138,346	2.4	%
Surety segment		126,365		5,905		528		120,988	0.4	%
RLI Insurance Group premiums earned	$	835,118	$	129,702	$	32,521	$	737,937	4.4	%
2016
Casualty segment	$	528,691	$	89,635	$	15,787	$	454,843	3.5	%
Property segment		179,460		38,353		11,060		152,167	7.3	%
Surety segment		127,143		6,584		1,039		121,598	0.9	%
RLI Insurance Group premiums earned	$	835,294	$	134,572	$	27,886	$	728,608	3.8	%

See the accompanying report of independent registered public accounting firm on page 108 of this report.

118

RLI CORP. AND SUBSIDIARIES

SCHEDULE V—VALUATION AND QUALIFYING ACCOUNTS

Years ended December 31, 2018, 2017 and 2016

	Balance		Amounts		Amounts		Balance
	at beginning		charged		recovered		at end of
(in thousands)	of period		to expense		(written off)		period
2018 Allowance for uncollectible reinsurance	$	25,911	$	—	$	—	$	25,911
2017 Allowance for uncollectible reinsurance	$	25,911	$	—	$	—	$	25,911
2016 Allowance for uncollectible reinsurance	$	25,911	$	—	$	—	$	25,911

See the accompanying report of independent registered public accounting firm on page 108 of this report.

119

RLI CORP. AND SUBSIDIARIES

SCHEDULE VI—SUPPLEMENTARY INFORMATION CONCERNING

PROPERTY-CASUALTY INSURANCE OPERATIONS

Years ended December 31, 2018, 2017 and 2016

(in thousands)	Deferred policy		Claims and		Unearned		Net		Net
Affiliation with	acquisition		claim adjustment		premiums,		premiums		investment
Registrant (1)	costs		expense reserves		gross		earned		income
2018	$	84,934	$	1,461,348	$	496,505	$	791,366	$	62,085
2017	$	77,716	$	1,271,503	$	451,449	$	737,937	$	54,876
2016	$	73,147	$	1,139,337	$	433,777	$	728,608	$	53,075

	Claims and claim adjustment
	expenses incurred related to:				Amortization		Paid claims and		Net
	Current		Prior		of deferred		claim adjustment		premiums
	year		year		acquisition costs		expenses		written
2018	$	478,143	$	(49,950)	$	267,738	$	301,356	$	823,175
2017	$	440,452	$	(38,868)	$	252,515	$	283,185	$	749,854
2016	$	391,772	$	(41,994)	$	249,612	$	304,606	$	740,952

(1) Consolidated property-casualty insurance operations.

See the accompanying report of independent registered public accounting firm on page 108 of this report.

120

EXHIBIT INDEX

Exhibit No.	Description of Document	Reference (page)
3.1	Amended and Restated Certificate of Incorporation	Incorporated by reference to the Company’s Form 8‑K filed May 8, 2018.
3.2	By-Laws	Incorporated by reference to the Company’s Form 8‑K filed May 8, 2018.
4.1	Senior Indenture	Incorporated by reference to the Company’s Form 8‑K filed October 2, 2013.
4.2	Supplemental Indenture	Incorporated by reference to the Company’s Form 8‑K filed May 8, 2018.
10.1	The RLI Corp. Directors’ Irrevocable Trust Agreement*	Incorporated by reference to the Company’s Form 10-K filed February 23, 2018.
10.2	RLI Corp. Nonemployee Directors’ Deferred Compensation Plan, as amended*	Incorporated by reference to the Company’s Form 10‑Q filed July 20, 2018.
10.3	RLI Corp. Executive Deferred Compensation Plan, as amended*	Incorporated by reference to the Company’s Form 10-K filed February 23, 2018.
10.4	Key Employee Excess Benefit Plan, as amended*	Incorporated by reference to the Company’s Form 10‑K filed February 25, 2009.
10.5	RLI Corp. 2010 Long-Term Incentive Plan*	Incorporated by reference to the Company’s Form 8-K filed on May 6, 2010.
10.6	RLI Corp. Annual Incentive Compensation Plan*	Incorporated by reference to the Company’s Form 10-K filed February 23, 2018.
10.7	Market Value Potential (MVP), Executive Incentive Program Guideline*	Incorporated by reference to the Company’s Form 10-K filed February 23, 2018.
10.8	Advances, Collateral Pledge, and Security Agreement (Federal Home Loan Bank of Chicago)	Incorporated by reference to the Company’s Form 8‑K filed September 26, 2014.
10.9	Credit Agreement (JPMorgan Chase Bank, N.A.)	Incorporated by reference to the Company’s Form 8‑K filed May  30, 2018.
10.10	RLI Corp. 2015 Long-Term Incentive Plan*	Incorporated by reference to the Company’s Form 8-K filed on May 7, 2015.
10.11	RLI Corp. Director and Officer Indemnification Agreement	Incorporated by reference to the Company’s Form 10‑Q filed October 24, 2018.
10.12	Shareholders Agreement by and among RLI Corp., Walter F. Hester III, and the Walter F. Hester III Revocable Trust	Incorporated by reference to the Company’s Form 8-K filed on August 21, 2018.
11.0	Statement re: computation of per share earnings	Refer to Note 1.O., “Earnings per share,” on page 75.

*Management contract or compensatory plan.

121

EXHIBIT INDEX

Exhibit No.	Description of Document	Reference Page
21.1	Subsidiaries of the Registrant	Page 124
23.1	Consent of KPMG LLP	Page 125
31.1	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Page 126
31.2	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Page 127
32.1	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Page 128
32.2	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Page 129
101	XBRL-Related Documents	Attached as Exhibit 101

122

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

RLI Corp.

(Registrant)

By:	/s/ Thomas L. Brown
	Thomas L. Brown
	Senior Vice President, Chief Financial Officer
Date:	February 22, 2019

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By:	/s/ Jonathan E. Michael	By:	/s/ Thomas L. Brown
	Jonathan E. Michael, Chairman & CEO		Thomas L. Brown, Senior Vice President,
	(Principal Executive Officer)		Chief Financial Officer (Principal Financial
			Officer and Principal Accounting Officer)
Date:	February 22, 2019	Date:	February 22, 2019
By:	/s/ Kaj Ahlmann	By:	/s/ Jordan W. Graham
	Kaj Ahlmann, Director		Jordan W. Graham, Director
Date:	February 22, 2019	Date:	February 22, 2019
By:	/s/ Michael E. Angelina	By:	/s/ Jonathan E. Michael
	Michael E. Angelina, Director		Jonathan E. Michael, Director
Date:	February 22, 2019	Date:	February 22, 2019
By:	/s/ John T. Baily	By:	/s/ Robert P. Restrepo, Jr.
	John T. Baily, Director		Robert P. Restrepo, Jr., Director
Date:	February 22, 2019	Date:	February 22, 2019
By:	/s/ Calvin G. Butler, Jr.	By:	/s/ Debbie S. Roberts
	Calvin G. Butler, Jr., Director		Debbie S. Roberts, Director
Date:	February 22, 2019	Date:	February 22, 2019
By:	/s/ David B. Duclos	By:	/s/ James J. Scanlan
	David B. Duclos, Director		James J. Scanlan, Director
Date:	February 22, 2019	Date:	February 22, 2019
By:	/s/ Susan S. Fleming	By:	/s/ Michael J. Stone
	Susan S. Fleming, Director		Michael J. Stone, Director
Date:	February 22, 2019	Date:	February 22, 2019

123

EX-21.1

Exhibit 21.1

Subsidiaries of the Registrant

The following companies are subsidiaries of the Registrant as of December 31, 2018.

	Jurisdiction of	Percentage
Name	Incorporation	Ownership
RLI Corp.	Delaware	100	%
RLI Insurance Company	Illinois	100	%
Mt. Hawley Insurance Company	Illinois	100	%
RLI Underwriting Services, Inc.	Illinois	100	%
RLI Insurance Agency Ltd.	Canada	100	%
Safe Fleet Insurance Services, Inc.	California	100	%
Data & Staff Service Co.	Washington	100	%
Contractors Bonding and Insurance Company	Illinois	100	%

124

EX-23.1

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Directors
RLI Corp.:

We consent to the incorporation by reference in the registration statements (Nos. 333-01637, 333-28625, 333-75251, 333-117714, 333-124450, 333-125354, 333-166614 and 333-203957) on Form S-8 and registration statement (No. 333-185534) on Form S-3 of RLI Corp. of our report dated February 22, 2019, with respect to the consolidated balance sheets of RLI Corp. as of December 31, 2018 and 2017, and the related consolidated statements of earnings and comprehensive earnings, shareholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2018, and the related notes and financial statement schedules I to VI (collectively, the “consolidated financial statements”), and the effectiveness of internal control over financial reporting as of December 31, 2018, which report appears in the December 31, 2018 annual report on Form 10-K of RLI Corp.

/s/ KPMG LLP

Chicago, Illinois

February 22, 2019

125

EX-31.1

Exhibit 31.1

CERTIFICATION

Chief Executive Officer Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Jonathan E. Michael, certify that:

I have reviewed this annual report on Form 10-K of RLI Corp.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s fourth fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) all significant deficiencies and material weaknesses in the design or operation of internal controls over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:    February 22, 2019
	/s/ Jonathan E. Michael
	Jonathan E. Michael
	Chairman & CEO

126

EX-31.2

Exhibit 31.2

CERTIFICATION

Chief Financial Officer Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Thomas L. Brown, certify that:

I have reviewed this annual report on Form 10-K of RLI Corp.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s fourth fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) all significant deficiencies and material weaknesses in the design or operation of internal controls over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:  February 22, 2019
	/s/ Thomas L. Brown
	Thomas L. Brown
	Senior Vice President, Chief Financial Officer

127

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of RLI Corp. (the “Company”) on Form 10-K for the period ending December 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jonathan E. Michael, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)  The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and

(2)  The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Jonathan E. Michael

Jonathan E. Michael

Chairman & CEO

February 22, 2019

128

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of RLI Corp. (the “Company”) on Form 10-K for the period ending December 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Thomas L. Brown, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)  The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and

(2)  The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Thomas L. Brown

Thomas L. Brown

Senior Vice President, Chief Financial Officer

February 22, 2019

129

XML

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Feb. 07, 2019	Jun. 30, 2018
Document and Entity Information
Entity Registrant Name	RLI CORP
Entity Central Index Key	0000084246
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 2,616,706,281
Entity Common Stock, Shares Outstanding		44,512,543
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fixed income:
Available-for-sale, at fair value (amortized cost - $1,776,465 in 2018 and $1,646,411 in 2017)	$ 1,760,515	$ 1,672,239
Equity securities, at fair value (cost - $220,373 in 2018 and $182,002 in 2017)	340,483	400,492
Short-term investments, at cost which approximates fair value	11,550	9,980
Other invested assets	51,542	33,808
Cash	30,140	24,271
Total investments and cash	2,194,230	2,140,790
Accrued investment income	14,033	15,166
Premiums and reinsurance balances receivable, net of allowances for uncollectible amounts of $16,967 in 2018 and $16,935 in 2017	152,576	134,351
Ceded unearned premium	71,174	57,928
Reinsurance balances recoverable on unpaid losses and settlement expenses, net of allowances for uncollectible amounts of $9,793 in 2018 and $10,014 in 2017	364,999	301,991
Deferred policy acquisition costs	84,934	77,716
Property and equipment, at cost, net of accumulated depreciation of $54,275 in 2018 and $47,676 in 2017	54,692	55,849
Investment in unconsolidated investees	94,967	90,067
Goodwill and intangibles	54,534	59,302
Other assets	18,926	14,084
TOTAL ASSETS	3,105,065	2,947,244
Liabilities:
Unpaid losses and settlement expenses	1,461,348	1,271,503
Unearned premiums	496,505	451,449
Reinsurance balances payable	22,591	21,624
Funds held	72,309	74,560
Income taxes - deferred	24,238	53,768
Bonds payable, long-term debt	149,115	148,928
Accrued expenses	45,124	52,848
Other liabilities	26,993	18,966
TOTAL LIABILITIES	2,298,223	2,093,646
Shareholders' Equity
Common stock ($0.01 par value in 2018 and $1.00 par value in 2017, authorized 100,000,000 shares, issued 67,434,257 shares in 2018 and 67,078,569 shares in 2017, and outstanding 44,504,043 shares in 2018 and 44,148,355 shares in 2017)	674	67,079
Paid-in capital	305,660	233,077
Accumulated other comprehensive earnings	(14,572)	157,919
Retained earnings	908,079	788,522
Deferred compensation	8,354	8,640
Less: Treasury shares at cost (22,930,214 shares in 2018 and 2017)	(401,353)	(401,639)
TOTAL SHAREHOLDERS’ EQUITY	806,842	853,598
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 3,105,065	$ 2,947,244

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Condensed Consolidated Balance Sheets
Available-for-sale, amortized cost	$ 1,776,465	$ 1,646,411
Equity securities, cost	220,373	182,002
Premiums and reinsurance balances receivable, allowances for uncollectible amounts	16,967	16,935
Reinsurance balances recoverable on unpaid losses and settlement expenses, allowances for uncollectible amounts	9,793	10,014
Property and equipment, accumulated depreciation	$ 54,275	$ 47,676
Common stock, par value (in dollars per share)	$ 0.01	$ 1.00
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	67,434,257	67,078,569
Common stock, shares outstanding (in shares)	44,504,043	44,148,355
Treasury stock, shares (in shares)	22,930,214	22,930,214

XML

Consolidated Statements of Earnings and Comprehensive Earnings - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Consolidated Statements of Earnings and Comprehensive Earnings
Net premiums earned	$ 791,366	$ 737,937	$ 728,608
Net investment income	62,085	54,876	53,075
Net realized gains	63,624	6,970	34,740
Other-than-temporary-impairment (OTTI) losses on investments	(217)	(2,559)	(95)
Net unrealized losses on equity securities	(98,735)
Consolidated revenue	818,123	797,224	816,328
Losses and settlement expenses	428,193	401,584	349,778
Policy acquisition costs	267,738	252,515	249,612
Insurance operating expenses	53,803	56,994	53,093
Interest expense on debt	7,437	7,426	7,426
General corporate expenses	9,427	11,340	10,170
Total expenses	766,598	729,859	670,079
Equity in earnings of unconsolidated investees	16,056	17,224	10,833
Earnings before income taxes	67,581	84,589	157,082
Income tax expense:
Current	23,917	9,302	41,034
Deferred	(20,515)	(29,741)	1,128
Income tax expense (benefit)	3,402	(20,439)	42,162
Net earnings	64,179	105,028	114,920
Other comprehensive earnings (loss), net of tax	(33,997)	35,309	(1,164)
Comprehensive earnings	$ 30,182	$ 140,337	$ 113,756
Basic:
Net earnings per share (in dollars per share)	$ 1.45	$ 2.39	$ 2.63
Comprehensive earnings per share (in dollars per share)	0.68	3.19	2.60
Diluted:
Net earnings per share (in dollars per share)	1.43	2.36	2.59
Comprehensive earnings per share (in dollars per share)	$ 0.67	$ 3.15	$ 2.56
Weighted average number of common shares outstanding
Basic (in shares)	44,358	44,033	43,772
Diluted (in shares)	44,835	44,500	44,432
Cash dividends paid per common share	$ 1.87	$ 2.58	$ 2.79

XML

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common stock	Paid-in Capital	Accumulated Other Comprehensive Earnings (Loss)	Retained Earnings	Deferred Compensation	Treasury Stock at Cost	Total
Stockholders' Equity Attributable to Parent, Beginning Balance at Dec. 31, 2015	$ 66,474	$ 221,345	$ 123,774	$ 804,875	$ 10,647	$ (403,646)	$ 823,469
Balance (in shares) at Dec. 31, 2015	43,544,128
Increase (Decrease) in Shareholders' Equity
Net earnings				114,920			114,920
Other comprehensive earnings (loss), net of tax			(1,164)				(1,164)
Deferred compensation under Rabbi trust plans					849	(849)
Stock option excess tax benefit		9,576					9,576
Share-based compensation	$ 401	(1,142)					(741)
Share-based compensation (in shares)	400,569
Dividends and dividend equivalents ($1.87, $2.58 and $2.79 per share during 2018, 2017 and 2016, respectively)				(122,488)			(122,488)
Stockholders' Equity Attributable to Parent, Ending Balance at Dec. 31, 2016	$ 66,875	229,779	122,610	797,307	11,496	(404,495)	823,572
Balance (in shares) at Dec. 31, 2016	43,944,697
Increase (Decrease) in Shareholders' Equity
Net earnings				105,028			105,028
Other comprehensive earnings (loss), net of tax			35,309				35,309
Deferred compensation under Rabbi trust plans					(2,856)	2,856
Share-based compensation	$ 204	3,298					3,502
Share-based compensation (in shares)	203,658
Dividends and dividend equivalents ($1.87, $2.58 and $2.79 per share during 2018, 2017 and 2016, respectively)				(113,813)			(113,813)
Stockholders' Equity Attributable to Parent, Ending Balance at Dec. 31, 2017	$ 67,079	233,077	157,919	788,522	8,640	(401,639)	853,598
Balance (in shares) at Dec. 31, 2017	44,148,355
Increase (Decrease) in Shareholders' Equity
Par value conversion from $1.00 per share to $0.01 per share	$ (66,409)	66,409
Net earnings				64,179			64,179
Other comprehensive earnings (loss), net of tax			(33,997)				(33,997)
Deferred compensation under Rabbi trust plans					(286)	286
Share-based compensation	$ 4	6,174					6,178
Share-based compensation (in shares)	355,688
Dividends and dividend equivalents ($1.87, $2.58 and $2.79 per share during 2018, 2017 and 2016, respectively)				(83,202)			(83,202)
Stockholders' Equity Attributable to Parent, Ending Balance at Dec. 31, 2018	$ 674	$ 305,660	(14,572)	908,079	$ 8,354	$ (401,353)	806,842
Balance (in shares) at Dec. 31, 2018	44,504,043
Increase (Decrease) in Shareholders' Equity
Cumulative-effect adjustment from ASU 2016-01 and 2018-02			$ (138,494)	$ 138,580			$ 86

XML

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Consolidated Statements of Shareholders' Equity
Cash dividends paid per common share	$ 1.87	$ 2.58	$ 2.79
Common stock, par value (in dollars per share)	$ 0.01	$ 1.00

XML

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net earnings	$ 64,179,000	$ 105,028,000	$ 114,920,000
Adjustments to reconcile net earnings to net cash provided by operating activities
Net realized gains	(63,407,000)	(4,411,000)	(34,645,000)
Net unrealized losses on equity securities	98,735,000
Depreciation	7,042,000	6,944,000	6,430,000
Other items, net	6,171,000	16,368,000	17,699,000
Change in:
Accrued investment income	1,132,000	(573,000)	285,000
Premiums and reinsurance balances receivable (net of direct write-offs and commutations)	(18,225,000)	(7,964,000)	17,275,000
Reinsurance balances payable	967,000	3,696,000	(19,628,000)
Funds held	(2,251,000)	1,818,000	18,488,000
Ceded unearned premium	(13,246,000)	(5,755,000)	660,000
Reinsurance balances recoverable on unpaid losses	(63,008,000)	(13,767,000)	9,620,000
Deferred policy acquisition costs	(7,218,000)	(4,569,000)	(3,318,000)
Accrued expenses	(7,724,000)	856,000	(3,750,000)
Unpaid losses and settlement expenses	189,845,000	132,166,000	35,552,000
Unearned premiums	45,056,000	17,672,000	11,683,000
Income taxes
Current	5,725,000	(3,019,000)	12,573,000
Deferred	(20,515,000)	(29,741,000)	1,128,000
Stock option excess tax benefit			(9,576,000)
Changes in investment in unconsolidated investees:
Undistributed earnings	(16,056,000)	(17,224,000)	(10,833,000)
Dividends received	9,900,000	0	9,900,000
Net Cash Provided by (Used in) Operating Activities, Total	217,102,000	197,525,000	174,463,000
Purchase of:
Fixed income, available-for-sale	(725,675,000)	(430,727,000)	(557,067,000)
Equity securities	(115,921,000)	(20,719,000)	(36,335,000)
Short-term investments, net	(1,570,000)	(4,965,000)
Property and equipment	(6,087,000)	(9,238,000)	(16,155,000)
Acquisition of agency			(850,000)
Other	(18,754,000)	(19,112,000)	(7,722,000)
Proceeds from sale of:
Fixed income, available-for-sale	395,019,000	168,760,000	329,091,000
Proceeds from sale of equity securities	147,838,000	36,573,000	89,909,000
Short-term investments, net			2,564,000
Property and equipment	167,000	128,000	1,688,000
Subsidiary or agency		408,000
Other	3,394,000	2,063,000
Proceeds from call or maturity of:
Fixed income, available-for-sale	187,380,000	195,617,000	141,255,000
Net Cash Used in Investing Activities, Total	(134,209,000)	(81,212,000)	(53,622,000)
Cash Flows from Financing Activities
Stock option excess tax benefit			9,576,000
Proceeds from stock option exercises	6,076,000	3,502,000	(741,000)
Cash dividends paid	(83,100,000)	(113,813,000)	(122,488,000)
Net Cash Used in Financing Activities, Total	(77,024,000)	(110,311,000)	(113,653,000)
Net increase in cash	5,869,000	6,002,000	7,188,000
Cash at the beginning of the period	24,271,000	18,269,000	11,081,000
Cash at the end of the period	$ 30,140,000	$ 24,271,000	$ 18,269,000

XML

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Dec. 31, 2018

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Notes to Consolidated Financial Statements

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

A.DESCRIPTION OF BUSINESS

RLI Corp. (the “Company”) is an insurance holding company that was founded in 1965. On May 4, 2018, RLI Corp. changed its state of incorporation from the State of Illinois to the State of Delaware (the “Reincorporation”). The Reincorporation was effected by merging RLI Corp., an Illinois corporation (“RLI Illinois”) into RLI Corp., a Delaware corporation (“RLI Delaware”). The separate corporate existence of RLI Illinois ceased and RLI Delaware continues in existence as the surviving corporation and possesses all rights, privileges, powers and franchises of RLI Illinois. The Reincorporation did not result in any change in the name, business, management, fiscal year, location of the principal executive offices, assets or liabilities of the Company. Each outstanding share of RLI Illinois common stock, which had a par value of $1.00 per share, was automatically converted into one outstanding share of RLI Delaware common stock, with a par value of $0.01 per share. In order to reflect the new par value of common stock on the balance sheet, a $66.4 million reclassification from common stock to paid-in-capital was made. For more information on the Reincorporation, see RLI Corp.’s Form 8-K filed on May 7, 2018.

We underwrite select property and casualty insurance coverages through major subsidiaries collectively known as RLI Insurance Group. We conduct operations principally through three insurance companies. RLI Insurance Company (RLI Ins.), a subsidiary of RLI Corp. and our principal insurance subsidiary, writes multiple lines of insurance on an admitted basis in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands and Guam. Mt. Hawley Insurance Company (Mt. Hawley), a subsidiary of RLI Ins., writes surplus lines insurance on a non-admitted basis in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands and Guam. Contractors Bonding and Insurance Company (CBIC), a subsidiary of RLI Ins., writes multiple lines of insurance on an admitted basis in all 50 states and the District of Columbia.

B.PRINCIPLES OF CONSOLIDATION AND BASIS OF PRESENTATION

The accompanying consolidated financial statements were prepared in conformity with generally accepted accounting principles in the United States of America (GAAP), which differ in some respects from those followed in reports to insurance regulatory authorities. The consolidated financial statements include the accounts of our holding company and our subsidiaries. All significant intercompany balances and transactions have been eliminated. Certain reclassifications were made to 2017 and 2016 to conform to the classifications used in the current year. The Company has evaluated subsequent events through the date these consolidated financial statements were issued. There were no subsequent events requiring adjustment to the financial statements or disclosure.

C.ADOPTED ACCOUNTING STANDARDS

ASU 2014-09, Revenue from Contracts with Customers (Topic 606)

ASU 2014-09 was issued to clarify and remove inconsistencies within revenue recognition requirements. The core principle of the update is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, the transaction price for a contract is allocated among separately identifiable performance obligations and a portion of the transaction price is recognized as revenue when the associated performance obligation has been completed or transferred to the customer. All contracts and fulfillment activities within the scope of Topic 944, Financial Services – Insurance, investment income, investment-related gains and losses and equity in earnings of unconsolidated investees are outside the scope of this ASU.

We adopted ASU 2014-09 on January 1, 2018. However, nearly all (over 99 percent) of our consolidated revenue is scoped out and therefore exempt from the guidance contained within this ASU. For the remaining portion, the revenue recognition policy we utilize aligns with the new guidance and there were no changes to the way we recognize revenue. Although the recognition of earnings from equity method investees is out of scope from the update, the recognition of revenue by our equity method investees would be subject to the new guidance if the revenue streams are within this update’s scope. Any impact on revenues would affect the net income of each of the equity method investees, upon which we calculate our portion of earnings to recognize. Our equity method investees are private companies and this guidance becomes effective for private companies in periods beginning after December 15, 2018. As a result, their earnings and our portion of those earnings are not impacted in 2018. We expect that revenue generated by both of our equity method investees will either be outside the scope of this update or largely unaffected by the changes.

ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities

This ASU was issued to improve the recognition and measurement of financial instruments. The new guidance makes targeted improvements to GAAP as follows:

a.Requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net earnings,

b.Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment,

c.Eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet,

d.Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes,

e.Requires an entity to present separately in other comprehensive earnings the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments,

f.Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and

g.Clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets.

We adopted ASU 2016-01 on January 1, 2018. A cumulative-effect adjustment to the balance sheet was made as of the beginning of the year, which moved $142.2 million of net unrealized gains and losses on equity securities from accumulated other comprehensive earnings to retained earnings. During 2018, we recognized $98.7 million of unrealized losses on equity securities within net earnings and $20.7 million of income tax benefit. This compares to $24.0 million and $5.6 million of unrealized gains on equity securities, net of tax, that were recognized through other comprehensive earnings for the comparable periods in 2017 and 2016, respectively. The future impact to our net earnings will vary depending upon the level of volatility in the performance of the securities held in our equity portfolio and the overall market. There were no other material impacts to the financial statements.

ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments

ASU 2016-15 was issued to reduce the diversity in practice of how certain cash receipts and payments, for which previous guidance was silent, are classified in the statement of cash flows. The update addresses eight specific issues, including contingent consideration payments made after a business combination, distributions received from equity method investees and the classification of cash receipts and payments that have aspects of more than one class of cash flows. We adopted ASU 2016-15 on January 1, 2018. The adoption did not have a material impact on our statement of cash flows.

ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income

ASU 2018-02 was issued as a result of the enactment of the Tax Cuts and Jobs Act of 2017 (TCJA) on December 22, 2017. Accounting guidance required deferred tax items to be revalued based on the new tax laws (the most significant of which reduced the corporate tax rate to 21 percent from 35 percent) with the change included in income from continuing operations. Since other comprehensive income was not affected by the revaluation of the deferred tax items, the net accumulated other comprehensive income (AOCI) balance was reflective of the historic 35 percent tax rate instead of the newly enacted rate, a difference that is referred to as a stranded tax effect. This ASU allows for the option to reclassify the stranded tax effects resulting from the implementation of the TCJA out of AOCI and into retained earnings. ASU 2018-02 does not replace the guidance requiring changes from the enactment of other tax laws or rates to be included within income from continuing operations and is applicable only to changes from the TCJA.

We adopted ASU 2018-02 during the first quarter of 2018. A current period adjustment was made to the balance sheet, which moved $3.7 million of stranded tax effects on the unrealized balances of our fixed income securities and equity method investees from accumulated other comprehensive earnings to retained earnings. The entire unrealized balance on equity securities was reclassified from AOCI into retained earnings from the adoption of ASU 2016-01 on January 1, 2018 and was therefore unaffected by this ASU. As there was no impact to net earnings and the balance sheet effect is limited to a reclassification within the equity section, there was not a material impact on our financial statements.

D.PROSPECTIVE ACCOUNTING STANDARDS

ASU 2016-02, Leases (Topic 842)

ASU 2016-02 was issued to improve the financial reporting of leasing transactions. Under current guidance for lessees, leases are only included on the balance sheet if certain criteria, classifying the agreement as a capital lease, are met. This update will require the recognition of a right-of-use asset and a corresponding lease liability, discounted to the present value, for all leases that extend beyond 12 months. For operating leases, the asset and liability will be amortized over the lease term on a straight-line basis, with all cash flows included in the operating section of the statement of cash flows. For finance leases, interest on the lease liability will be recognized separately from the amortization of the right-of-use asset in the statement of comprehensive income and the repayment of the principal portion of the lease liability will be classified as a financing activity while the interest component will be included in the operating section of the statement of cash flows.

This ASU is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. ASU 2018-10, Codification Improvements to Topic 842, Leases was issued to clarify certain aspects of ASU 2016-02 and the two updates will be adopted concurrently. ASU 2016-02 requires leases to be recognized and measured at the beginning of the earliest period presented using a modified retrospective approach upon adoption. However, ASU 2018-11, Leases (Topic 842): Targeted Improvements provides an alternative transition method by which leases are recognized at the date of adoption and a cumulative-effect adjustment to the opening balance of retained earnings is recognized in the period of adoption. We plan to adopt using this alternative. It is expected that total assets and total liabilities will increase by approximately $25 million to $30 million upon implementation and the adoption of this update will not have a material impact on net earnings.

ASU 2016-13, Financial Instruments – Credit Losses (Topic 326)

ASU 2016-13 was issued to provide more decision-useful information about the expected credit losses on financial instruments. Current GAAP delays the recognition of credit losses until it is probable a loss has been incurred. The update will require a financial asset measured at amortized cost, including reinsurance balances recoverable, to be presented at the net amount expected to be collected by means of an allowance for credit losses that runs through net earnings. Credit losses relating to available-for-sale debt securities will also be recorded through an allowance for credit losses. However, the amendments would limit the amount of the allowance to the amount by which fair value is below amortized cost. The measurement of credit losses on available-for-sale securities is similar under current GAAP, but the update requires the use of the allowance account through which amounts can be reversed, rather than through an irreversible write-down.

This ASU is effective for annual and interim reporting periods beginning after December 15, 2019. Early adoption is permitted beginning after December 15, 2018. Upon adoption, the update will be applied using the modified-retrospective approach, by which a cumulative-effect adjustment will be made to retained earnings as of the beginning of the first reporting period presented. This update will have the most impact on our available-for-sale fixed income portfolio and reinsurance balances recoverable. However, as our fixed income portfolio is weighted towards higher rated bond (84 percent rated A or better at December 31, 2018) and we purchase reinsurance from financially strong reinsurers for which we already have an allowance for uncollectible reinsurance amounts, we do not expect that the effect of adoption will be material.

ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities

Under current practices, the amortization period for callable debt securities held at a premium is generally the contractual life of the instrument. However, if an entity has a large number of similar loans, it may consider estimates of future principal prepayments. For those who choose to not incorporate an estimate of future prepayments, ASU 2017-08 shortens the amortization period for premium on debt securities to the earliest call date, rather than the maturity date, to align the amortization method with how the securities are quoted, priced and traded. After the earliest call date, if the call option is not exercised, the entity shall reset the effective yield using the payment terms of the debt security. Any excess of the amortized cost basis over the amount payable will be amortized to the next call date or to maturity if there are no other call dates. The method of accounting for a discount does not change and will continue to be amortized over the life of the bond.

This ASU is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. The update will be applied using a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. As we currently incorporate estimates of future principal prepayments when calculating the effective yield for bonds carrying a premium, we do not expect the adoption of this update to have a material impact on our financial statements.

ASU 2018-07, Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting

ASU 2018-07 was issued to simplify the accounting for share-based transactions by expanding the scope of Topic 718 from only being applicable to share-based payments to employees to also include share-based payment transactions for acquiring goods and services from nonemployees. As a result, nonemployee share-based transactions will be measured by estimating the fair value of the equity instruments at the grant date, taking into consideration the probability of satisfying performance conditions. This ASU is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. Our long-term incentive plan limits the awards of share-based payments to employees and directors of the Company or any affiliate. The share-based compensation expense to nonemployee directors was $0.3 million in 2018. Costs associated with such payments are not expected to materially increase and we do not expect this update to have a material impact on our financial statements.

ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement

ASU 2018-13 modifies the disclosure requirements for assets and liabilities measured at fair value. The requirements to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timing of transfers between levels and the valuation processes for Level 3 fair value measurements have all been removed. However, the changes in unrealized gains and losses included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period must be disclosed along with the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements (or other quantitative information if it is more reasonable). Finally, for investments measured at net asset value, the requirements have been modified so that the timing of liquidation and the date when restrictions from redemption might lapse are only disclosed if the investee has communicated the timing to the entity or announced the timing publicly.

This ASU is effective for annual and interim reporting periods beginning after December 15, 2019. As the amendments are only disclosure-related and we do not currently have any assets or liabilities that are measured based on Level 3 inputs, our financial statements will not be materially impacted by this update.

ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract

ASU 2018-15 requires a customer in a cloud computing arrangement (i.e. hosting arrangement) that is a service contract to follow the internal-use software guidance to determine which implementation costs to capitalize as assets or expense as incurred. Relevant implementation costs in the development stage are capitalized, while costs incurred during the preliminary project and post-implementation stages are expensed as the activities are performed. Capitalized costs are expensed over the term of the hosting arrangement. This ASU is effective for annual and interim reporting periods beginning after December 15, 2019. Early adoption is permitted. This update can either be applied retrospectively or prospectively to all implementation costs incurred after the date of adoption. We have not yet completed the analysis of how adopting this ASU will affect our financial statements.

E. INVESTMENTS:

Equity securities are carried at fair value with unrealized gains and losses recorded within net earnings in 2018. Prior to 2018, unrealized gains and losses on equity securities were recognized through other comprehensive earnings. We classify our investments in fixed income securities into one of three categories: trading, held-to-maturity or available-for-sale.

AVAILABLE-FOR-SALE SECURITIES

Debt securities not included as held-to-maturity or trading are classified as available-for-sale and reported at fair value. Unrealized gains and losses on these securities are excluded from net earnings but are recorded as a separate component of comprehensive earnings and shareholders’ equity, net of deferred income taxes. All of our debt securities are classified as available-for-sale.

HELD-TO-MATURITY SECURITIES

Debt securities that we have the positive intent and ability to hold to maturity are classified as held-to-maturity and carried at amortized cost. Except for declines that are other-than-temporary, changes in the fair value of these securities are not reflected in the financial statements. We do not hold any debt security classified as held-to-maturity.

TRADING SECURITIES

Debt securities purchased for short-term resale are classified as trading securities. These securities are reported at fair value with unrealized gains and losses included in earnings. We do not hold any debt securities classified as trading.

OTHER THAN TEMPORARY IMPAIRMENT

We regularly evaluate our fixed income securities using quantitative and qualitative criteria to determine impairment losses for other-than-temporary declines in the fair value of the investments. The following are the key factors for determining if a security is other-than-temporarily impaired:

· The length of time and the extent to which the fair value has been less than amortized cost,

· The probability of significant adverse changes to the cash flows,

· The occurrence of a discrete credit event resulting in the issuer defaulting on a material obligation, the issuer seeking protection from creditors under the bankruptcy laws, the issuer proposing a voluntary reorganization under which creditors are asked to exchange their claims for cash or securities having a fair value substantially lower than par value of their claims or

· The probability that we will recover the entire amortized cost basis of our fixed income securities prior to maturity.

Quantitative criteria considered during this process include, but are not limited to: the degree and duration of current fair value as compared to the amortized cost of the security, degree and duration of the security’s fair value being below cost and whether the issuer is in compliance with terms and covenants of the security. Qualitative criteria include the credit quality, current economic conditions, the anticipated speed of cost recovery, the financial health of and specific prospects for the issuer, as well as our absence of intent to sell or requirement to sell fixed income securities prior to recovery. In addition, we consider price declines in our other-than-temporary impairment (OTTI) analysis when they provide evidence of declining credit quality, and we distinguish between price changes caused by credit deterioration, as opposed to rising interest rates. See note 2 for further discussion of OTTI.

Interest on fixed maturities and short-term investments is credited to earnings on an accrual basis. Premiums and discounts are amortized or accreted over the lives of the related fixed maturities. Dividends on equity securities are credited to earnings on the ex-dividend date. Realized gains and losses on disposition of investments are based on specific identification of the investments sold on the settlement date.

F.CASH, SHORT-TERM INVESTMENTS AND OTHER INVESTED ASSETS

Cash consists of uninvested balances in bank accounts. Short-term investments consist of investments with original maturities of 90 days or less, primarily AAA-rated prime and government money market funds. Short-term investments are carried at cost. We have not experienced losses on these instruments. Other invested assets include investments in low income housing tax credit partnerships (LIHTC), membership in the Federal Home Loan Bank of Chicago (FHLBC) and investments in private funds. Our LIHTC investments are carried at amortized cost, and our investment in FHLBC stock is carried at cost. Due to the nature of cash, short-term investments, the LIHTC and our membership in the FHLBC, their carrying amounts approximate fair value. The private funds are carried at fair value, using each investment’s net asset value.

G.REINSURANCE

Ceded unearned premiums and reinsurance balances recoverable on paid and unpaid losses and settlement expenses are reported separately as assets, instead of being netted with the related liabilities, since reinsurance does not relieve the Company of our legal liability to our policyholders.

We continuously monitor the financial condition of our reinsurers. As part of our monitoring efforts, we review their annual financial statements, quarterly disclosures and Securities and Exchange Commission (SEC) filings for reinsurers that are publicly traded. We also review insurance industry developments that may impact the financial condition of our reinsurers. We analyze the credit risk associated with our reinsurance balances recoverable by monitoring the A.M. Best and Standard & Poor’s (S&P) ratings of our reinsurers. In addition, we subject our reinsurance recoverables to detailed recoverable tests, including one based on average default by S&P rating. Based upon our review and testing, our policy is to charge to earnings, in the form of an allowance, an estimate of unrecoverable amounts from reinsurers. This allowance is reviewed on an ongoing basis to ensure that the amount makes a reasonable provision for reinsurance balances that we may be unable to recover.

H.POLICY ACQUISITION COSTS

We defer incremental direct costs that relate to the successful acquisition of new or renewal insurance contracts, including commissions and premium taxes. Acquisition-related costs may be deemed ineligible for deferral when they are based on contingent or performance criteria beyond the basic acquisition of the insurance contract or when efforts to obtain or renew the insurance contract are unsuccessful. All eligible costs are capitalized and charged to expense in proportion to premium revenue recognized. The method followed in computing deferred policy acquisition costs limits the amount of such deferred costs to their estimated realizable value. This would also give effect to the premiums to be earned and anticipated losses and settlement expenses, as well as certain other costs expected to be incurred as the premiums are earned. Judgments as to the ultimate recoverability of such deferred costs are reviewed on a segment basis and are highly dependent upon estimated future loss costs associated with the premiums written. This deferral methodology applies to both gross and ceded premiums and acquisition costs.

I.PROPERTY AND EQUIPMENT

Property and equipment are presented at cost less accumulated depreciation and are depreciated on a straight-line basis for financial statement purposes over periods ranging from 3 to 10 years for equipment and up to 30 years for buildings and improvements.

J.INVESTMENT IN UNCONSOLIDATED INVESTEES

We maintain a 40 percent interest in the equity and earnings of Maui Jim, Inc. (Maui Jim), a manufacturer of high-quality sunglasses, which is accounted for under the equity method. We also maintain a similar minority representation on their board of directors. Maui Jim’s chief executive officer owns a controlling majority of the outstanding shares of Maui Jim. We carry this investment at the holding company level as it is not core to our insurance operations. Our investment in Maui Jim was $79.5 million in 2018 and $77.7 million in 2017. In 2018, we recorded $12.5 million in investee earnings for Maui Jim, compared to $14.4 million in 2017 and $9.7 million in 2016. Maui Jim recorded net income of $30.3 million in 2018, $34.4 million in 2017 and $26.9 million in 2016. Additional summarized financial information for Maui Jim for 2018 and 2017 is outlined in the following table:

(in millions)	2018		2017
Total assets	$	265.6	$	259.4
Total liabilities		90.4		88.0
Total equity		175.2		171.4

Approximately $68.9 million of undistributed earnings from Maui Jim are included in our retained earnings as of December 31, 2018. We received dividends of $9.9 million from Maui Jim in 2018 and 2016. No dividends were received in 2017.

As of December 31, 2018, we had a 23 percent interest in the equity and earnings of Prime Holdings Insurance Services, Inc. (Prime), which is accounted for under the equity method. Prime writes business through two Illinois domiciled insurance carriers, Prime Insurance Company, an excess and surplus lines company, and Prime Property and Casualty Insurance Inc., an admitted insurance company. Our investment in Prime was $15.4 million at December 31, 2018 and $12.4 million at December 31, 2017. In 2018, we recorded $3.6 million in investee earnings for Prime, compared to $2.8 million in 2017 and $1.1 million in 2016. Additionally, we maintain a 25 percent quota share reinsurance treaty with Prime, which contributed $41.1 million of gross premiums written and $34.2 million of net premiums earned during 2018, compared to $29.6 million of gross premiums written and $21.0 million of net premiums earned during 2017 and $13.4 million of gross premiums written and $11.4 million of net premiums earned during 2016.

We perform annual impairment reviews of our investments in unconsolidated investees, which take into consideration current valuation and operating results. Based upon the most recent reviews, the assets were not impaired.

K.INTANGIBLE ASSETS

Goodwill and intangibles totaled $54.5 million and $59.3 million at December 31, 2018 and 2017, respectively, as detailed in the following table.

Goodwill and Intangible Assets
(in thousands)		2018		2017
Goodwill
Energy surety	$	25,706	$	25,706
Miscellaneous and contract surety		15,110		15,110
Small Commercial		5,246		5,246
Medical professional liability *		-		3,595
Total goodwill	$	46,062	$	49,657
Intangibles
State insurance licenses	$	7,500	$	7,500
Definite-lived intangibles, net of accumulated amortization of $3,062 at 12/31/18 and $5,678 at 12/31/17		972		2,145
Total intangibles	$	8,472	$	9,645
Total goodwill and intangibles	$	54,534	$	59,302

*  The medical professional liability goodwill balance reflects a cumulative non-cash impairment charge of $12.4 million and $8.8 million as of December 31, 2018 and 2017, respectively.

As the amortization of goodwill and indefinite-lived intangible assets is not permitted, the assets are tested for impairment on an annual basis, or earlier if there is reason to suspect that their values may have been diminished or impaired. Annual impairment testing was performed on each of our goodwill and indefinite-lived intangible assets during 2018. Based upon these reviews, our energy surety goodwill, miscellaneous and contract surety goodwill, small commercial goodwill and state insurance license indefinite-lived intangible asset were not impaired. In addition, as of December 31, 2018, there were no triggering events on the above-mentioned goodwill and intangible assets that would suggest an updated review was necessary.

As previously disclosed, adverse loss experience triggered the need to test the medical professional liability reporting unit during the first quarter of 2018 and the second quarters of 2017 and 2016. The testing resulted in a $4.4 million non-cash impairment charge on goodwill and intangible assets in 2018, a $3.4 million non-cash impairment charge on goodwill and intangible assets in 2017 and a $7.2 million non-cash impairment charge on goodwill in 2016. In each instance, a fair value for the medical professional liability reporting unit’s agency relationships, carried as a definite-lived intangible asset, was determined by using a discounted cash flow valuation. In 2018, the carrying value exceeded the fair value, resulting in a $0.8 million non-cash impairment charge. In 2017, the resulting non-cash impairment charge on definite-lived intangibles was $1.8 million. A fair value for the medical professional liability reporting unit’s goodwill was determined by using a weighted average of a market approach and discounted cash flow valuation. The carrying value exceeded the fair value in each year, resulting in a $3.6 million non-cash impairment charge in 2018, a $1.6 million non-cash impairment charge during 2017 and a $7.2 million non-cash impairment charge in 2016. Subsequent to the 2018 impairment, the medical professional liability reporting unit had no remaining goodwill or intangible assets. All impairment charges were recorded as net realized losses in the respective period’s consolidated statement of earnings.

The definite-lived intangible assets are amortized against future operating results based on their estimated useful lives. Amortization of intangible assets was $0.4 million, $0.7 million and $0.9 million for 2018, 2017 and 2016, respectively. We anticipate we will recognize amortization expense of $0.4 million in 2019 and 2020 and $0.1 million in 2021.

L.UNPAID LOSSES AND SETTLEMENT EXPENSES

The liability for unpaid losses and settlement expenses represents estimates of amounts needed to pay reported and unreported claims and related expenses. The estimates are based on certain actuarial and other assumptions related to the ultimate cost to settle such claims. Such assumptions are subject to occasional changes due to evolving economic, social and political conditions. All estimates are periodically reviewed and, as experience develops and new information becomes known, the reserves are adjusted as necessary. Such adjustments are reflected in the results of operations in the period in which they are determined. Due to the inherent uncertainty in estimating reserves for losses and settlement expenses, there can be no assurance that the ultimate liability will not exceed recorded amounts. If actual liabilities do exceed recorded amounts, there will be an adverse effect. Furthermore, we may determine that recorded reserves are more than adequate to cover expected losses, which would lead to a reduction in our reserves.

M.INSURANCE REVENUE RECOGNITION

Insurance premiums are recognized ratably over the term of the contracts, net of ceded reinsurance. Unearned premiums are calculated on a monthly pro rata basis.

N.INCOME TAXES

We file a consolidated federal income tax return. Federal income taxes are accounted for using the asset and liability method under which deferred income taxes are recognized for the tax consequences of temporary differences by applying enacted statutory tax rates applicable to future years to differences between the financial statement carrying amounts and the tax bases of existing assets and liabilities, operating losses and tax credit carry forwards. The effect on deferred taxes for a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance if it is more likely than not that all or some of the deferred tax assets will not be realized.

We consider uncertainties in income taxes and recognize those in our financial statements as required. As it relates to uncertainties in income taxes, our unrecognized tax benefits, including interest and penalty accruals, are not considered material to the consolidated financial statements. Also, no tax uncertainties are expected to result in significant increases or decreases to unrecognized tax benefits within the next 12-month period. Penalties and interest related to income tax uncertainties, should they occur, would be included in income tax expense in the period in which they are incurred.

As an insurance company, we are subject to minimal state income tax liabilities. On a state basis, since the majority of our income is from insurance operations, we pay premium taxes which are calculated as a percentage of gross premiums written in lieu of state income taxes. Premium taxes are a component of policy acquisition costs.

O.EARNINGS PER SHARE

Basic earnings per share (EPS) is computed by dividing income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the dilution that could occur if securities or other contracts to issue common stock or common stock equivalents were exercised or converted into common stock. When inclusion of these items increases the earnings per share or reduces the loss per share, the effect on earnings is anti-dilutive. Under these circumstances, the diluted net earnings or net loss per share is computed excluding these items.

The following represents a reconciliation of the numerator and denominator of the basic and diluted EPS computations contained in the consolidated financial statements:

			Weighted Average
	Income		Shares	Per Share
(in thousands, except per share data)	(Numerator)		(Denominator)	Amount
For the year ended December 31, 2018
Basic EPS
Income available to common shareholders	$	64,179	44,358	$	1.45
Stock options		—	477
Diluted EPS
Income available to common shareholders and assumed conversions	$	64,179	44,835	$	1.43
For the year ended December 31, 2017
Basic EPS
Income available to common shareholders	$	105,028	44,033	$	2.39
Stock options		—	467
Diluted EPS
Income available to common shareholders and assumed conversions	$	105,028	44,500	$	2.36
For the year ended December 31, 2016
Basic EPS
Income available to common shareholders	$	114,920	43,772	$	2.63
Stock options		—	660
Diluted EPS
Income available to common shareholders and assumed conversions	$	114,920	44,432	$	2.59

P.COMPREHENSIVE EARNINGS

Our comprehensive earnings include net earnings plus after-tax unrealized gains and losses on our available-for-sale fixed income portfolio in 2018. In 2017 and 2016, after-tax unrealized gains and losses on our equity portfolio were also included. With the adoption of ASU 2016-01 on January 1, 2018, we began recognizing unrealized gains and losses on the equity portfolio through net income. See note 1.C for more information. In reporting the components of comprehensive earnings, we used the federal statutory tax rate of 21 percent in 2018 and 35 percent in 2017 and 2016. Other comprehensive income (loss), as shown in the consolidated statements of earnings and comprehensive earnings, is net of tax expense (benefit) of $(9.0) million, $19.0 million and $(0.6) million for 2018, 2017 and 2016, respectively.

The following table illustrates the changes in the balance of each component of accumulated other comprehensive earnings for each period presented in the consolidated financial statements. The 2016 and 2017 activity and balances include the net unrealized gain and loss activity on both fixed income and equity securities, while the 2018 activity and ending balance reflect only the net unrealized gain and loss activity on fixed income securities due to the aforementioned adoption of ASU 2016-01.

Unrealized Gains/Losses on Available-for-Sale Securities	For the Year Ended December 31,
(in thousands)	2018		2017		2016
Beginning balance	$	157,919	$	122,610	$	123,774
Cumulative effect adjustment of ASU 2016-01		(142,219)		—		—
Adjusted beginning balance	$	15,700	$	122,610	$	123,774
Other comprehensive earnings before reclassifications		(35,763)		40,887		26,740
Amounts reclassified from accumulated other comprehensive earnings		1,766		(5,578)		(27,904)
Net current-period other comprehensive earnings (loss)	$	(33,997)	$	35,309	$	(1,164)
Reclassification of stranded tax effect per ASU 2018-02 (see note 1.C)		3,725		—		—
Ending balance	$	(14,572)	$	157,919	$	122,610

The sale or other-than-temporary impairment of an available-for-sale security results in amounts being reclassified from accumulated other comprehensive earnings to current period net earnings. The effects of reclassifications out of accumulated other comprehensive earnings by the respective line items of net earnings are presented in the following table. As previously mentioned, 2018 activity is reflective of activity on fixed income securities classified as available-for-sale, while 2017 and 2016 also includes activity from the equity portfolio.

Amount Reclassified from Accumulated Other Comprehensive Earnings
(in thousands)
Component of Accumulated	For the Year Ended December 31,						Affected line item in the
Other Comprehensive Earnings	2018		2017		2016		Statement of Earnings
Unrealized gains and losses on available-for-sale securities	$	(2,018)	$	11,141	$	43,024	Netrealized investment gains
		(217)		(2,559)		(95)	Other-than-temporary impairment (OTTI) losses on investments
	$	(2,235)	$	8,582	$	42,929	Earnings before income taxes
		469		(3,004)		(15,025)	Income tax benefit (expense)
	$	(1,766)	$	5,578	$	27,904	Net earnings

Q.FAIR VALUE DISCLOSURES

Fair value is defined as the price in the principal market that would be received for an asset to facilitate an orderly transaction between market participants on the measurement date. We determined the fair value of certain financial instruments based on their underlying characteristics and relevant transactions in the marketplace. We maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

The following are the levels of the fair value hierarchy and a brief description of the type of valuation inputs that are used to establish each level. Financial assets are classified based upon the lowest level of significant input that is used to determine fair value.

· Pricing Level 1 is applied to valuations based on readily available, unadjusted quoted prices in active markets for identical assets.

· Pricing Level 2 is applied to valuations based upon quoted prices for similar assets in active markets, quoted prices for identical or similar assets in inactive markets; or valuations based on models where the significant inputs are observable (e.g. interest rates, yield curves, prepayment speeds, default rates, loss severities) or can be corroborated by observable market data.

· Pricing Level 3 is applied to valuations that are derived from techniques in which one or more of the significant inputs are unobservable.

As a part of management’s process to determine fair value, we utilize widely recognized, third-party pricing sources to determine our fair values. We have obtained an understanding of the third-party pricing sources’ valuation methodologies and inputs. The following is a description of the valuation techniques used for financial assets that are measured at fair value, including the general classification of such assets pursuant to the fair value hierarchy.

Corporate, Agencies, Government and Municipal Bonds: The pricing vendor employs a multi-dimensional model which uses standard inputs including (listed in approximate order of priority for use) benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, market bids/offers and other reference data. The pricing vendor also monitors market indicators, as well as industry and economic events. All bonds valued using these techniques are classified as Level 2. All Corporate, Agencies, Government and Municipal securities are deemed Level 2.

Mortgage-backed Securities (MBS)/Collateralized Mortgage Obligations (CMO) and Asset-backed Securities (ABS): The pricing vendor evaluation methodology includes principally interest rate movements and new issue data. Evaluation of the tranches (non-volatile, volatile or credit sensitivity) is based on the pricing vendors’ interpretation of accepted modeling and pricing conventions. This information is then used to determine the cash flows for each tranche, benchmark yields, pre-payment assumptions and to incorporate collateral performance. To evaluate CMO volatility, an option adjusted spread model is used in combination with models that simulate interest rate paths to determine market price information. This process allows the pricing vendor to obtain evaluations of a broad universe of securities in a way that reflects changes in yield curve, index rates, implied volatility, mortgage rates and recent trade activity. MBS/CMO and ABS with corroborated, observable inputs are classified as Level 2. All of our MBS/CMO and ABS are deemed Level 2.

For all of our fixed income securities classified as Level 2, as described above, we periodically conduct a review to assess the reasonableness of the fair values provided by our pricing services. Our review consists of a two-pronged approach. First, we compare prices provided by our pricing services to those provided by an additional source. In some cases, we obtain prices from securities brokers and compare them to the prices provided by our pricing services. In our comparisons, if discrepancies are found, we compare our prices to actual reported trade data for like securities. No changes to the fair values supplied by our pricing services have occurred as a result of our reviews. Based on these assessments, we have determined that the fair values of our Level 2 securities provided by our pricing services are reasonable.

Common Stock: All but one of our common stock holdings are traded on an exchange. Exchange traded equities have readily observable price levels and are classified as Level 1 (fair value based on quoted market prices). Pricing for the equity security not traded on an exchange is provided by a third-party pricing source and is classified as Level 2.

Due to the relatively short-term nature of cash, short-term investments, accounts receivable and accounts payable, their carrying amounts are reasonable estimates of fair value. Our investments in private funds, classified as other invested assets, are measured using the investments’ net asset value per share and are not categorized within the fair value hierarchy. The fair value of our long-term debt is discussed further in note 4.

R.STOCK-BASED COMPENSATION

We expense the estimated fair value of employee stock options and similar awards. We measure compensation cost for awards of equity instruments to employees based on the grant-date fair value of those awards and recognize compensation expense over the service period that the awards are expected to vest.

The tax effects related to share-based payments were made through net earnings in 2018 and 2017. In 2016, the tax effects of share-based compensation were recognized in additional paid-in capital under the alternative transition method. The alternative transition method used simplified methods to determine the impact on the additional paid-in capital pool and consolidated statements of cash flows.

See note 8 for further discussion and related disclosures regarding stock options.

S.RISKS AND UNCERTAINTIES:

Certain risks and uncertainties are inherent to our day-to-day operations and to the process of preparing our consolidated financial statements. The more significant risks and uncertainties, as well as our attempt to mitigate, quantify and minimize such risks, are presented below and throughout the notes to the consolidated financial statements.

Insurance Risks

We compete with a large number of other companies in our selected lines of business. During periods of intense competition for premium, we are vulnerable to the actions of other companies who may seek to write business without the appropriate regard for risk and profitability. The insurance industry is currently operating under highly competitive conditions and, as a result, margins in the industry are under pressure. During these times, it is very difficult to grow or maintain premium volume without sacrificing underwriting discipline and income. Our profitability can be affected significantly by the ability of our underwriters to accurately select and price risk and our claim personnel to appropriately deliver fair outcomes. We attempt to mitigate this risk by incentivizing our underwriters to maximize underwriting profit and remain disciplined in pricing and selecting risks. If we are unable to compete effectively in the markets in which we operate or expand our operations into new markets, our underwriting revenues may decline, as well as overall business results.

Our loss reserves are based on estimates and may be inadequate to cover our actual insured losses, which would negatively impact our profitability. As of December 31, 2018 we had $1.5 billion of gross loss and LAE reserves. Significant periods of time often elapse between the occurrence of an insured loss, the reporting of the loss to the Company and our payment of that loss. As part of the reserving process, we review historical data and consider the impact of various factors such as trends in claim frequency and severity, emerging economic and social trends, inflation and changes in the regulatory and litigation environments. If the actual amount of insured losses is greater than the amount we have reserved for these losses, our profitability would suffer.

Catastrophe Exposures

Our insurance coverages include exposure to catastrophic events. We monitor all catastrophe exposures by quantifying our exposed policy limits in each region and by using computer-assisted modeling techniques. Additionally, we limit our risk to such catastrophes through restraining the total policy limits written in each region and by purchasing reinsurance. Our major catastrophe exposure is to losses caused by earthquakes, primarily on the West Coast. In 2018, we had reinsurance protection of $300 million in excess of $25 million first-dollar retention for earthquakes in California and $325 million in excess of a $25 million first-dollar retention for earthquakes outside of California. These amounts are subject to certain co-participations by the Company on losses in excess of the $25 million retentions. Our second largest catastrophe exposure is to losses caused by wind storms to commercial properties throughout the Gulf and East Coasts, as well as to homes we insure in Hawaii. In 2018, these coverages were supported by $225 million in excess of a $25 million first-dollar retention in traditional catastrophe reinsurance protection, subject to certain co-participations by the Company in the excess layers. In addition, we have incidental exposure to international catastrophic events.

Our catastrophe reinsurance treaty renewed on January 1, 2019. We purchased reinsurance protection of $400 million in excess of $25 million first-dollar retention for earthquakes in California and $425 million in excess of a $25 million first-dollar retention for earthquakes outside of California. For other CAT events, such as hurricanes, we purchased reinsurance protection of $275 million in excess of a $25 million first dollar retention. These amounts are subject to certain co-participations by the Company on losses in excess of the $25 million retentions. We actively manage our catastrophe program to keep our net retention in line with risk tolerances and to optimize the risk/return trade off.

Environmental Exposures

We are subject to environmental claims and exposures primarily through our commercial excess, general liability and discontinued assumed casualty reinsurance lines of business. Although exposure to environmental claims exists in these lines of business, we seek to mitigate or control the extent of this exposure on the vast majority of this business through the following methods: (1) our policies include pollution exclusions that have been continually updated to further strengthen them, (2) our policies primarily cover moderate hazard risks and (3) we began writing this business after the insurance industry became aware of the potential pollution liability exposure and implemented changes to limit exposure to this hazard.

We offer coverage for low to moderate environmental liability exposures for small contractors and asbestos and mold remediation specialists. We also provide limited coverage for individually underwritten underground storage tanks. The overall exposure is mitigated by focusing on smaller risks with low to moderate exposures. Risks that have large-scale exposures are avoided including petrochemical, chemical, mining, manufacturers and other risks that might be exposed to superfund sites. This business is covered under our casualty ceded reinsurance treaties.

We made loss and settlement expense payments on environmental liability claims and have loss and settlement expense reserves for others. We include this historical environmental loss experience with the remaining loss experience in the applicable line of business to project ultimate incurred losses and settlement expenses as well as related incurred but not reported (IBNR) loss and settlement expense reserves.

Although historical experience on environmental claims may not accurately reflect future environmental exposures, we used this experience to record loss and settlement expense reserves in the exposed lines of business. See further discussion of environmental exposures in note 6.

Reinsurance

Reinsurance does not discharge the Company from our primary liability to policyholders, and to the extent that a reinsurer is unable to meet its obligations, we would be liable. We continuously monitor the financial condition of prospective and existing reinsurers. As a result, we purchase reinsurance from a number of financially strong reinsurers. We provide an allowance for reinsurance balances deemed uncollectible. See further discussion of reinsurance exposures in note 5.

Investment Risk

Our investment portfolio is subject to market, credit and interest rate risks. The equity portfolio will fluctuate with movements in the overall stock market. While the equity portfolio has been constructed to have lower downside risk than the market, the portfolio is positively correlated with movements in domestic stocks. The bond portfolio is affected by interest rate changes and movement in credit spreads. We attempt to mitigate our interest rate and credit risks by constructing a well-diversified portfolio with high-quality securities with varied maturities. Downturns in the financial markets could have a negative effect on our portfolio. However, we attempt to manage this risk through asset allocation, duration and security selection.

Liquidity Risk

Liquidity is essential to our business and a key component of our concept of asset-liability matching. Our liquidity may be impaired by an inability to collect premium receivable or reinsurance recoverable balances in a timely manner, an inability to sell assets or redeem our investments, an inability to access funds from our insurance subsidiaries, unforeseen outflows of cash or large claim payments or an inability to access debt or equity capital markets. This situation may arise due to circumstances that we may be unable to control, such as a general market disruption, an operational problem that affects third parties or the Company, or even by the perception among market participants that we, or other market participants, are experiencing greater liquidity risk.

Our credit ratings are important to our liquidity. A reduction in our credit ratings could adversely affect our liquidity and competitive position by increasing our borrowing costs or limiting our access to the capital markets.

Financial Statements

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenues and expenses. The most significant of these amounts is the liability for unpaid losses and settlement expenses. Other estimates include investment valuation and OTTIs, the collectability of reinsurance balances, recoverability of deferred tax assets and deferred policy acquisition costs. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. Although recorded estimates are supported by actuarial computations and other supportive data, the estimates are ultimately based on our expectations of future events. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the consolidated financial statements in future periods.

External Factors

Our insurance subsidiaries are highly regulated by the state in which they are incorporated and by the states in which they do business. Such regulations, among other things, limit the amount of dividends, impose restrictions on the amount and types of investments and regulate rates insurers may charge for various coverages. We are also subject to insolvency and guaranty fund assessments for various programs designed to ensure policyholder indemnification. We generally accrue an assessment during the period in which it becomes probable that a liability has been incurred from an insolvency and the amount of the related assessment can be reasonably estimated.

The National Association of Insurance Commissioners (NAIC) has developed Property/Casualty Risk-Based Capital (RBC) standards that relate an insurer’s reported statutory surplus to the risks inherent in its overall operations. The RBC formula uses the statutory annual statement to calculate the minimum indicated capital level to support investment and underwriting risk. The NAIC model law calls for various levels of regulatory action based on the magnitude of an indicated RBC capital deficiency, if any. We regularly monitor our subsidiaries’ internal capital requirements and the NAIC’s RBC developments. As of December 31, 2018, we determined that our capital levels are well in excess of the minimum capital requirements for all RBC action levels and that our capital levels are sufficient to support the level of risk inherent in our operations. See note 9 for further discussion of statutory information and related insurance regulatory restrictions.

In addition, ratings are a critical factor in establishing the competitive position of insurance companies. Our insurance companies are rated by A.M. Best, S&P and Moody’s. Their ratings reflect their opinions of an insurance company’s and an insurance holding company’s financial strength, operating performance, strategic position and ability to meet its obligations to policyholders.

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INVESTMENTS

12 Months Ended

Dec. 31, 2018

INVESTMENTS

INVESTMENTS

2. INVESTMENTS

A summary of net investment income is as follows:

NET INVESTMENT INCOME
(in thousands)	2018		2017		2016
Interest on fixed income securities	$	54,491	$	48,343	$	46,834
Dividends on equity securities		9,814		10,506		10,929
Interest on cash, short-term investments and other invested assets		2,309		945		120
Gross investment income	$	66,614	$	59,794	$	57,883
Less investment expenses		(4,529)		(4,918)		(4,808)
Net investment income	$	62,085	$	54,876	$	53,075

Pretax net realized investment gains (losses) and net changes in unrealized gains (losses) on investments for the years ended December 31 are summarized as follows:

REALIZED/UNREALIZED GAINS
(in thousands)	2018		2017		2016
Net realized gains (losses):
Fixed income:
Available-for-sale	$	(2,018)	$	859	$	4,314
Available-for-sale OTTI		(217)		(2,559)		(95)
Equity securities		69,868		10,282		38,709
Other		(4,226)		(4,171)		(8,283)
Total	$	63,407	$	4,411	$	34,645
Net changes in unrealized gains (losses) on investments:
Fixed income:
Available-for-sale	$	(41,778)	$	16,846	$	(10,972)
Equity securities		(98,380)		36,844		8,659
Other invested assets		(355)		29		—
Investment in unconsolidated investees		(1,257)		604		522
Total	$	(141,770)	$	54,323	$	(1,791)
Net realized gains (losses) and changes in unrealized gains (losses) on investments	$	(78,363)	$	58,734	$	32,854

During 2018, we recorded $63.4 million in net realized gains, which included $4.4 million of other non-cash realized losses from goodwill and definite-lived intangible impairments. In addition, we recorded a change in net unrealized losses of $141.8  million. The majority of our net realized gains were due to sales of equity securities. The change in unrealized gain/loss position was due to the realization of gains in the course of selling equity securities and the price decline in both equities and bonds during 2018. For 2018, the net realized gains (losses) and changes in unrealized gains (losses) on investments totaled $(78.4) million.

The following is a summary of the disposition of fixed income securities and equities for the years ended December 31, with separate presentations for sales and calls/maturities.

							Net
SALES	Proceeds		Gross Realized				Realized
(in thousands)	From Sales		Gains		Losses		Gain (Loss)
2018
Available-for-sale	$	394,318	$	3,131	$	(5,349)	$	(2,218)
Equities		147,838		71,065		(1,197)		69,868
2017
Available-for-sale	$	169,002	$	2,406	$	(1,670)	$	736
Equities		36,573		13,178		(2,896)		10,282
2016
Available-for-sale	$	329,091	$	7,158	$	(3,287)	$	3,871
Equities		89,909		39,668		(959)		38,709

							Net
CALLS/MATURITIES			Gross Realized				Realized
(in thousands)	Proceeds		Gains		Losses		Gain (Loss)
2018
Available-for-sale	$	187,380	$	311	$	(111)	$	200
2017
Available-for-sale	$	195,617	$	262	$	(139)	$	123
2016
Available-for-sale	$	141,255	$	445	$	(2)	$	443

FAIR VALUE MEASUREMENTS

Assets measured at fair value on a recurring basis as of December 31, 2018, are summarized below:

			Significant
	Quoted in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government	$	—	$	200,229	$	—	$	200,229
U.S. agency		—		31,904		—		31,904
Non-U.S. govt. & agency		—		7,639		—		7,639
Agency MBS		—		395,253		—		395,253
ABS/CMBS*		—		136,723		—		136,723
Corporate		—		668,679		—		668,679
Municipal		—		320,088		—		320,088
Total fixed income securities - available-for-sale	$	—	$	1,760,515	$	—	$	1,760,515
Equity securities		339,985		498		—		340,483
Total	$	339,985	$	1,761,013	$	—	$	2,100,998

*Non-agency asset-backed & commercial mortgage-backed

Assets measured at fair value on a recurring basis as of December 31, 2017, are summarized below:

			Significant
	Quoted in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government	$	—	$	91,689	$	—	$	91,689
U.S. agency		—		18,778		—		18,778
Non-U.S. govt. & agency		—		7,588		—		7,588
Agency MBS		—		328,471		—		328,471
ABS/CMBS*		—		70,526		—		70,526
Corporate		—		519,022		—		519,022
Municipal		—		636,165		—		636,165
Total fixed income securities - available-for-sale	$	—	$	1,672,239	$	—	$	1,672,239
Equity securities		400,492		—		—		400,492
Total	$	400,492	$	1,672,239	$	—	$	2,072,731

*Non-agency asset-backed & commercial mortgage-backed

As noted in the previous tables, we did not have any assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as of December 31, 2018 and 2017. Additionally, there were no securities transferred in or out of levels 1 or 2 during 2018 or 2017.

The amortized cost and estimated fair value of fixed income securities at December 31, 2018, by contractual maturity, are shown as follows:

(in thousands)	Amortized Cost		Fair Value
Available-for-sale
Due in one year or less	$	41,319	$	41,333
Due after one year through five years		411,153		410,680
Due after five years through 10 years		615,061		608,115
Due after 10 years		168,716		168,412
Mtge/ABS/CMBS*		540,216		531,975
Total available-for-sale	$	1,776,465	$	1,760,515

*Mortgage-backed, asset-backed & commercial mortgage-backed

Expected maturities may differ from contractual maturities due to call provisions on some existing securities. At December 31, 2018, the net unrealized losses of available-for-sale fixed income securities totaled $16.0 million pretax. At December 31, 2017, the net unrealized appreciation of available-for-sale fixed maturities securities totaled $25.8 million pretax.

In addition, the following table is a schedule of amortized costs and estimated fair values of investments in fixed income securities as of December 31, 2018 and 2017:

2018	Amortized				Gross Unrealized
(in thousands)	Cost		Fair Value		Gains		Losses
Available-for-sale
U.S. government	$	199,982	$	200,229	$	1,232	$	(985)
U.S. agency		31,716		31,904		403		(215)
Non-U.S. govt. & agency		8,170		7,639		—		(531)
Agency MBS		402,992		395,253		1,709		(9,448)
ABS/CMBS*		137,224		136,723		375		(876)
Corporate		681,909		668,679		2,894		(16,124)
Municipal		314,472		320,088		6,926		(1,310)
Total fixed income	$	1,776,465	$	1,760,515	$	13,539	$	(29,489)

2017	Amortized				Gross Unrealized
(in thousands)	Cost		Fair Value		Gains		Losses
Available-for-sale
U.S. government	$	92,561	$	91,689	$	23	$	(895)
U.S. agency		18,541		18,778		347		(110)
Non-U.S. govt. & agency		7,501		7,588		143		(56)
Agency MBS		329,129		328,471		3,420		(4,078)
ABS/CMBS*		70,405		70,526		436		(315)
Corporate		508,128		519,022		12,575		(1,681)
Municipal		620,146		636,165		17,272		(1,253)
Total fixed income	$	1,646,411	$	1,672,239	$	34,216	$	(8,388)

*Non-agency asset-backed & commercial mortgage-backed

Mortgage-Backed, Commercial Mortgage-Backed and Asset-Backed Securities

Gross unrealized losses in the collateralized securities bond portfolio increased to $10.3 million in 2018 as interest rates increased during the year. All of our collateralized securities carry the highest credit rating by one or more major rating agencies and continue to pay according to contractual terms.

For all fixed income securities at an unrealized loss at December 31, 2018, we believe it is probable that we will receive all contractual payments in the form of principal and interest. In addition, we are not required to, nor do we intend to, sell these investments prior to recovering the entire amortized cost basis of each security, which may be at maturity. We do not consider these investments to be other-than-temporarily impaired at December 31, 2018.

Corporate Bonds

Gross unrealized losses in the corporate bond portfolio increased to $16.1 million in 2018 from $1.7 million at the end of 2017 as interest rates and credit spreads increased during the year. The corporate bond portfolio has an overall rating of A-.

Municipal Bonds

As of December 31, 2018, municipal bonds totaled $320.1 million with gross unrealized losses of $1.3 million, the same as the previous year. As of December 31, 2018, approximately 42 percent of the municipal fixed income securities in the investment portfolio were general obligations of state and local governments and the remaining 58 percent were revenue based. Eighty-five percent of our municipal fixed income securities were rated AA or better while 99 percent were rated A or better.

Equity Securities

Our equity portfolio consists of common stocks and exchange traded funds (ETF). Gross unrealized losses in the equity portfolio increased $9.2 million to $10.1 million in 2018 as equity markets declined during the year.

Impairment Analysis

Under current accounting standards, an OTTI write-down of debt securities, where fair value is below amortized cost, is triggered by circumstances where: (1) an entity has the intent to sell a security, (2) it is more likely than not that the entity will be required to sell the security before recovery of its amortized cost basis or (3) the entity does not expect to recover the entire amortized cost basis of the security. If an entity intends to sell a security or if it is more likely than not the entity will be required to sell the security before recovery, an OTTI write-down is recognized in earnings equal to the difference between the security’s amortized cost and its fair value. If an entity does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the OTTI write-down is separated into an amount representing the credit loss, which is recognized in earnings, and the amount related to all other factors, which is recognized in other comprehensive income.

As part of our evaluation of whether particular securities are other-than-temporarily impaired, we consider our intent to sell a security (which is determined on a security-by-security basis) and whether it is more likely than not we will be required to sell the security before the recovery of our amortized cost basis. Significant changes in these factors could result in a charge to net earnings for impairment losses. Impairment losses result in a reduction of the underlying investment’s cost basis.

The following table is also used as part of our impairment analysis and displays the total value of debt securities that were in an unrealized loss position as of December 31, 2018, and December 31, 2017. The table segregates the securities based on type, noting the fair value, amortized cost and unrealized loss on each category of investment as well as in total. The table further classifies the securities based on the length of time they have been in an unrealized loss position.

	December 31, 2018						December 31, 2017
			12 Mos.						12 Mos.
(in thousands)	< 12 Mos.		& Greater		Total		< 12 Mos.		& Greater		Total
U.S. Government
Fair value	$	7,249	$	76,073	$	83,322	$	58,009	$	30,888	$	88,897
Amortized cost		7,270		77,037		84,307		58,443		31,349		89,792
Unrealized Loss	$	(21)	$	(964)	$	(985)	$	(434)	$	(461)	$	(895)
U.S. Agency
Fair value	$	—	$	8,843	$	8,843	$	10,917	$	—	$	10,917
Amortized cost		—		9,058		9,058		11,027		—		11,027
Unrealized Loss	$	—	$	(215)	$	(215)	$	(110)	$	—	$	(110)
Non-U.S. Government
Fair value	$	5,432	$	2,207	$	7,639	$	—	$	1,840	$	1,840
Amortized cost		5,571		2,599		8,170		—		1,896		1,896
Unrealized Loss	$	(139)	$	(392)	$	(531)	$	—	$	(56)	$	(56)
Agency MBS
Fair value	$	25,345	$	261,325	$	286,670	$	122,130	$	111,306	$	233,436
Amortized cost		25,486		270,632		296,118		123,559		113,955		237,514
Unrealized Loss	$	(141)	$	(9,307)	$	(9,448)	$	(1,429)	$	(2,649)	$	(4,078)
ABS/CMBS*
Fair value	$	46,918	$	32,137	$	79,055	$	23,406	$	21,587	$	44,993
Amortized cost		47,146		32,785		79,931		23,491		21,817		45,308
Unrealized Loss	$	(228)	$	(648)	$	(876)	$	(85)	$	(230)	$	(315)
Corporate
Fair value	$	306,177	$	147,751	$	453,928	$	86,946	$	28,600	$	115,546
Amortized cost		315,428		154,624		470,052		87,736		29,491		117,227
Unrealized Loss	$	(9,251)	$	(6,873)	$	(16,124)	$	(790)	$	(891)	$	(1,681)
Municipal
Fair value	$	6,036	$	55,681	$	61,717	$	71,059	$	60,049	$	131,108
Amortized cost		6,052		56,975		63,027		71,534		60,827		132,361
Unrealized Loss	$	(16)	$	(1,294)	$	(1,310)	$	(475)	$	(778)	$	(1,253)
Total fixed income
Fair value	$	397,157	$	584,017	$	981,174	$	372,467	$	254,270	$	626,737
Amortized cost		406,953		603,710		1,010,663		375,790		259,335		635,125
Unrealized Loss	$	(9,796)	$	(19,693)	$	(29,489)	$	(3,323)	$	(5,065)	$	(8,388)

*Non-agency asset-backed & commercial mortgage-backed

The fixed income portfolio contained 777 securities in an unrealized loss position as of December 31, 2018. Of these 777 securities, 302 have been in an unrealized loss position for 12 consecutive months or longer and represent $19.7 million in unrealized losses. All fixed income securities continue to pay the expected coupon payments under the contractual terms of the securities. Credit-related impairments on fixed income securities that we do not plan to sell, and for which we are not more likely than not to be required to sell, are recognized in net earnings. Any non-credit related impairment is recognized in comprehensive earnings. Based on our analysis, our fixed income portfolio is of a high credit quality and we believe we will recover the amortized cost basis of our fixed income securities. We continually monitor the credit quality of our fixed income investments to assess if it is probable that we will receive our contractual or estimated cash flows in the form of principal and interest. There were no OTTI losses recognized in other comprehensive earnings in the periods presented. Key factors that we consider in the evaluation of credit quality include:

· Changes in technology that may impair the earnings potential of the investment,

· The discontinuance of a segment of business that may affect future earnings potential,

· Reduction or elimination of dividends,

· Specific concerns related to the issuer’s industry or geographic area of operation,

· Significant or recurring operating losses, poor cash flows and/or deteriorating liquidity ratios and

· Downgrades in credit quality by a major rating agency.

Based on our analysis, we concluded that the securities in an unrealized loss position were not other-than-temporarily impaired at December 31, 2018 and 2017. There were $0.2 million, $2.6 million and $0.1 million in losses associated with OTTI of securities in 2018, 2017 and 2016, respectively.

Unrealized Gains and Losses on Equity Securities

Unrealized gains (losses) recognized during 2018 on equity securities still held as of December 31, 2018 were $(28.7) million. Unrealized gains (losses) recognized during 2017 on equity securities still held as of December 31, 2017 were $47.2 million.

Other Invested Assets

We had $51.5 million of other invested assets at December 31, 2018, compared to $33.8 million at the end of 2017. Other invested assets include investments in low income housing tax credit (LIHTC) partnerships, membership stock in the Federal Home Loan Bank of Chicago (FHLBC) and investments in private funds. Our LIHTC investments are carried at amortized cost and our investment in FHLBC stock is carried at cost. Due to the nature of the LIHTC and our membership in the FHLBC, their carrying amounts approximate fair value. The private funds are carried at fair value, using each investment’s net asset value.

Our LIHTC interests had a balance of $20.3 million at December 31, 2018 compared to $15.5 million at December 31, 2017 and recognized a total tax benefit of $2.2 million during 2018 compared to $2.4 million during 2017 and $1.9 million during 2016. Our unfunded commitment for our LIHTC investments totaled $7.4 million at December 31, 2018 and will be paid out in installments through 2025.

We had $18.8 million of unfunded commitments related to our investments in private funds at December 31, 2018. Additionally, our interest in these investments is generally restricted from being transferred or otherwise redeemed without prior consent by the respective entities. An initial public offering would allow for the transfer of interest in some situations, while the timed dissolution of the partnership would trigger redemption in others.

Restricted Assets

As of December 31, 2018, $16.1 million of investments were pledged as collateral with the FHLBC to ensure timely access to the secured lending facility that ownership of the FHLBC stock provides. As of and during year ended December 31, 2018, there were no outstanding borrowings with the FHLBC.

As of December 31, 2018, fixed income securities with a carrying value of $59.2 million were on deposit with regulatory authorities as required by law.

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POLICY ACQUISITION COSTS

12 Months Ended

Dec. 31, 2018

POLICY ACQUISITION COSTS

POLICY ACQUISITION COSTS

3. POLICY ACQUISITION COSTS

Policy acquisition costs deferred and amortized to income for the years ended December 31 are summarized as follows:

(in thousands)	2018		2017		2016
Deferred policy acquisition costs (DAC), beginning of year	$	77,716	$	73,147	$	69,829
Deferred:
Direct commissions	$	175,697	$	157,723	$	150,390
Premium taxes		12,654		11,651		11,759
Ceding commissions		(22,190)		(18,096)		(17,488)
Net deferred	$	166,161	$	151,278	$	144,661
Amortized		158,943		146,709		141,343
DAC, end of year	$	84,934	$	77,716	$	73,147
Policy acquisition costs:
Amortized to expense - DAC	$	158,943	$	146,709	$	141,343
Period costs:
Ceding commission - contingent		(2,241)		(3,575)		(1,524)
Other underwriting expenses		111,036		109,381		109,793
Total policy acquisition costs	$	267,738	$	252,515	$	249,612

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DEBT

12 Months Ended

Dec. 31, 2018

DEBT

DEBT

4. DEBT

As of December 31, 2018, outstanding debt balances totaled $149.1 million, net of unamortized discount and debt issuance costs, all of which were our long-term senior notes.

On October 2, 2013, we completed a public debt offering, issuing $150.0 million in senior notes maturing September 15, 2023, and paying interest semi-annually at the rate of 4.875 percent. The notes were issued at a discount resulting in proceeds, net of discount and commission, of $148.6 million. The amount of the discount is being charged to income over the life of the debt on an effective-yield basis. The estimated fair value for the senior note was $155.9 million as of December 31, 2018. The fair value of our long-term debt is based on the limited observable prices that reflect thinly traded securities and is therefore classified as a level 2 liability within the fair value hierarchy.

We paid $7.3 million of interest on our senior notes in each of the last three years. The average rate on debt was 4.91 percent in 2018, 2017 and 2016.

We maintain a revolving line of credit with JP Morgan Chase Bank N.A., which permits the Company to borrow up to an aggregate principal amount of $50.0 million. This facility was entered into during the second quarter of 2018 and replaced the previous $40.0 million facility which expired on May 28, 2018. Under certain conditions, the line may be increased up to an aggregate principal amount of $75.0 million. This facility has a two-year term that expires on May 24, 2020. As of and during the years ended December 31, 2018, 2017 and 2016, no amounts were outstanding on these facilities.

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REINSURANCE

12 Months Ended

Dec. 31, 2018

REINSURANCE

REINSURANCE

5. REINSURANCE

In the ordinary course of business, our insurance subsidiaries assume and cede premiums and selected insured risks with other insurance companies, known as reinsurance. A large portion of the reinsurance is put into effect under contracts known as treaties and, in some instances, by negotiation on each individual risk (known as facultative reinsurance). In addition, there are several types of treaties including quota share, excess of loss and catastrophe reinsurance contracts that protect against losses over stipulated amounts arising from any one occurrence or event. The arrangements allow the Company to pursue greater diversification of business and serve to limit the maximum net loss to a single event, such as a catastrophe. Through the quantification of exposed policy limits in each region and the extensive use of computer-assisted modeling techniques, we monitor the concentration of risks exposed to catastrophic events.

Through the purchase of reinsurance, we also generally limit our net loss on any individual risk to a maximum of $3.0 million, although retentions can vary.

Premiums written and earned along with losses and settlement expenses incurred for the years ended December 31 are summarized as follows:

(in thousands)	2018		2017		2016
WRITTEN
Direct	$	934,913	$	848,153	$	844,430
Reinsurance assumed		48,303		37,159		30,434
Reinsurance ceded		(160,041)		(135,458)		(133,912)
Net	$	823,175	$	749,854	$	740,952
EARNED
Direct	$	896,234	$	835,118	$	835,294
Reinsurance assumed		41,926		32,521		27,886
Reinsurance ceded		(146,794)		(129,702)		(134,572)
Net	$	791,366	$	737,937	$	728,608
LOSSES AND SETTLEMENT EXPENSES INCURRED
Direct	$	560,421	$	486,986	$	405,873
Reinsurance assumed		20,376		16,072		13,196
Reinsurance ceded		(152,604)		(101,474)		(69,291)
Net	$	428,193	$	401,584	$	349,778

At December 31, 2018, we had unearned reinsurance premiums and recoverables on paid and unpaid losses and settlement expenses totaling $430.0 million. More than 93 percent of our reinsurance recoverables are due from companies with financial strength ratings of “A” or better by A.M. Best and S&P rating services.

The following table displays net reinsurance balances recoverable, after consideration of collateral, from our top reinsurers as of December 31, 2018. These reinsurers all have financial strength ratings of “A” or better by A.M. Best and Standard and Poor’s ratings services. Also shown are the amounts of written premium ceded to these reinsurers during the calendar year 2018.

			Net Reinsurer				Ceded
	A.M. Best	S & P	Exposure as of		Percent of		Premiums		Percent of
(dollars in thousands)	Rating	Rating	12/31/2018		Total		Written		Total
Munich Re / HSB	A+, Superior	AA-, Very Strong	$	73,593	17.1	%	$	24,479	15.3	%
Swiss Re / Westport Ins. Corp.	A+, Superior	AA-, Very Strong		35,095	8.2	%		2,100	1.3	%
Endurance Re	A+, Superior	A+, Strong		28,754	6.7	%		6,000	3.8	%
Aspen UK Ltd.	A, Excellent	A, Strong		27,735	6.4	%		7,906	4.9	%
Berkley Insurance Co.	A+, Superior	A+, Strong		23,267	5.4	%		6,335	4.0	%
Hannover Ruckversicherung	A+, Superior	AA-, Very Strong		22,629	5.3	%		9,458	5.9	%
Axis Re	A+, Superior	A+, Strong		19,928	4.6	%		6,424	4.0	%
Transatlantic Re	A+, Superior	A+, Strong		19,517	4.5	%		7,911	4.9	%
Toa Re	A, Excellent	A+, Strong		18,480	4.3	%		6,495	4.1	%
General Re	A++, Superior	AA+, Very Strong		18,168	4.2	%		5,170	3.2	%
Tokio Millennium Re	A+, Superior	A+, Strong		17,044	4.0	%		6,947	4.3	%
All other reinsurers*				125,777	29.3	%		70,816	44.3	%
Total ceded exposure			$	429,987	100.0	%	$	160,041	100.0	%

*All other reinsurance balances recoverable, when considered by individual reinsurer, are less than 2 percent of shareholders’ equity.

Ceded unearned premiums and reinsurance balances recoverable on paid losses and settlement expenses are reported separately as an asset, rather than being netted with the related liability, since reinsurance does not relieve the Company of our liability to policyholders. Such balances are subject to the credit risk associated with the individual reinsurer. We continually monitor the financial condition of our reinsurers and actively follow up on any past due or disputed amounts. As part of our monitoring efforts, we review their annual financial statements and SEC filings for those reinsurers that are publicly traded. We also review insurance industry developments that may impact the financial condition of our reinsurers. We analyze the credit risk associated with our reinsurance balances recoverable by monitoring the A.M. Best and S&P ratings of our reinsurers. In addition, we subject our reinsurance recoverables to detailed recoverability tests, including a segment-based analysis using the average default rating percentage by S&P rating, which assists the Company in assessing the sufficiency of the existing allowance. Additionally, we perform an in-depth reinsurer financial condition analysis prior to the renewal of our reinsurance placements.

Our policy is to charge to earnings, in the form of an allowance, an estimate of unrecoverable amounts from reinsurers. This allowance is reviewed on an ongoing basis to ensure that the amount makes a reasonable provision for reinsurance balances that we may be unable to recover. Once regulatory action (such as receivership, finding of insolvency, order of conservation or order of liquidation) is taken against a reinsurer, the paid and unpaid recoverable for the reinsurer are specifically identified and written off through the use of our allowance for estimated unrecoverable amounts from reinsurers. When we write-off such a balance, it is done in full. We then re-evaluate the remaining allowance and determine whether the balance is sufficient as detailed above and if needed, an additional allowance is recognized and income charged. The amounts of allowances for uncollectible amounts on paid and unpaid recoverables were $16.1 million and $9.8 million, respectively, at December 31, 2018. At December 31, 2017, the amounts were $15.9 million and $10.0 million, respectively. We have no receivables with a due date that extends beyond one year that are not included in our allowance for uncollectible amounts.

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HISTORICAL LOSS AND LAE DEVELOPMENT

12 Months Ended

Dec. 31, 2018

HISTORICAL LOSS AND LAE DEVELOPMENT

HISTORICAL LOSS AND LAE DEVELOPMENT

6. HISTORICAL LOSS AND LAE DEVELOPMENT

The following table is a reconciliation of our unpaid losses and settlement expenses (LAE) for the years 2018, 2017 and 2016:

(in thousands)	2018		2017		2016
Unpaid losses and LAE at beginning of year:
Gross	$	1,271,503	$	1,139,337	$	1,103,785
Ceded		(301,991)		(288,224)		(297,844)
Net	$	969,512	$	851,113	$	805,941
Increase (decrease) in incurred losses and LAE:
Current accident year	$	478,143	$	440,452	$	391,772
Prior accident years		(49,950)		(38,868)		(41,994)
Total incurred	$	428,193	$	401,584	$	349,778
Loss and LAE payments for claims incurred:
Current accident year	$	(76,050)	$	(73,392)	$	(70,540)
Prior accident year		(225,306)		(209,793)		(234,066)
Total paid	$	(301,356)	$	(283,185)	$	(304,606)
Net unpaid losses and LAE at end of year	$	1,096,349	$	969,512	$	851,113
Unpaid losses and LAE at end of year:
Gross	$	1,461,348	$	1,271,503	$	1,139,337
Ceded		(364,999)		(301,991)		(288,224)
Net	$	1,096,349	$	969,512	$	851,113

Loss development occurs when our current estimate of ultimate losses, established through our reserve analysis processes, differs from the initial reserve estimate. The recognition of the changes in initial reserve estimates occurred over time as claims were reported, initial case reserves were established, initial reserves were reviewed in light of additional information and ultimate payments were made on the collective set of claims incurred as of that evaluation date. The new information on the ultimate settlement value of claims is continually updated until all claims in a defined set are settled. As a small specialty insurer with a diversified product portfolio, our experience will ordinarily exhibit fluctuations from period to period. While we attempt to identify and react to systematic changes in the loss environment, we also must consider the volume of claim experience directly available to the Company and interpret any particular period’s indications with a realistic technical understanding of the reliability of those observations.

The following is information about incurred and paid loss development as of December 31, 2018, net of reinsurance, as well as cumulative claim frequency, the total of IBNR liabilities included within the net incurred loss amounts and average historical claims duration as of December 31, 2018. The loss information has been disaggregated so that only losses that are expected to develop in a similar manner are grouped together. This has resulted in the presentation of loss information for our property and surety segments at the segment level, while information for our casualty segment has been separated in four groupings: primary occurrence, excess occurrence, claims made and transportation. Primary occurrence includes select lines within the professional services product along with general liability, small commercial and other casualty products. Excess occurrence encompasses commercial excess and personal umbrella, while claims made includes select lines within the professional services product and medical professional liability and executive products. Reported claim counts represent claim events on a specified policy rather than individual claimants and includes claims that did not or are not expected to result in an incurred loss. The information about incurred and paid claims development for the years ended December 31, 2009 to 2017 is presented as unaudited required supplementary information.

Casualty - Primary Occurrence
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	85,476	$	119,957	$	99,765	$	91,441	$	86,888	$	82,651	$	81,138	$	80,518	$	80,350	$	81,445		$	2,202	5,713
2010				87,875		96,582		93,589		88,820		85,034		80,289		78,685		78,991		80,216			2,392	6,117
2011						91,139		98,428		94,145		89,622		86,342		83,181		82,193		82,248			3,180	5,851
2012								91,807		78,406		65,893		61,072		59,028		59,488		60,328			3,502	5,163
2013										80,823		67,297		62,882		60,329		60,162		59,556			6,538	4,287
2014												88,092		79,497		71,592		67,237		66,389			12,492	4,242
2015														94,835		84,975		83,579		78,675			21,351	4,311
2016																101,950		96,753		90,611			38,505	4,148
2017																		119,741		111,391			64,662	4,119
2018																				141,513			109,482	3,773
																		Total	$	852,372
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	1,972	$	9,233	$	24,115	$	43,702	$	58,460	$	65,913	$	70,220	$	74,920	$	75,948	$	77,175
2010				2,587		13,025		29,312		44,051		55,992		61,929		66,399		69,514		73,318
2011						5,924		17,124		32,978		48,822		60,769		67,358		71,413		74,814
2012								5,897		14,539		23,889		33,822		43,276		47,970		51,611
2013										6,334		13,021		22,366		34,786		40,609		45,753
2014												11,436		18,771		29,545		40,270		47,343
2015														10,157		19,902		33,020		45,056
2016																10,142		24,186		35,764
2017																		13,154		25,933
2018																				15,066
	* Presented as unaudited required supplementary information.																	Total	$	491,833
										All outstanding liabilities before 2009, net of reinsurance										11,911
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	372,450
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		9.7	%	12.4	%	16.8	%	18.6	%	13.9	%	8.2	%	5.5	%	4.6	%	3.0	%	1.5	%

Casualty - Excess Occurrence
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	30,267	$	19,719	$	14,981	$	12,893	$	12,966	$	12,459	$	12,601	$	11,982	$	12,055	$	12,072		$	285	567
2010				29,314		24,244		22,111		18,932		20,044		22,044		21,018		20,530		20,527			369	500
2011						26,272		17,148		17,443		18,641		19,160		20,959		21,295		22,032			824	581
2012								29,042		21,558		21,021		21,885		21,231		22,433		23,020			1,386	855
2013										39,984		34,824		26,857		25,425		25,599		24,922			3,488	933
2014												50,889		39,095		35,119		32,274		33,372			8,832	875
2015														53,672		50,857		47,392		42,840			14,320	669
2016																56,341		49,385		37,676			25,675	572
2017																		62,863		55,868			43,891	473
2018																				69,362			63,524	258
																		Total	$	341,691
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	956	$	3,947	$	6,585	$	9,460	$	11,001	$	10,808	$	11,776	$	11,780	$	11,786	$	11,787
2010				7		6,002		10,705		13,282		15,512		17,302		19,175		19,256		19,308
2011						2,169		5,145		6,981		8,793		10,772		16,494		17,769		20,214
2012								1,315		3,573		8,843		15,380		16,879		17,747		19,310
2013										1,060		5,701		10,967		14,545		16,967		17,956
2014												1,899		4,006		11,002		18,852		22,541
2015														2,048		10,127		19,571		23,184
2016																1,068		3,396		7,441
2017																		17		5,679
2018																				2,506
	* Presented as unaudited required supplementary information.																	Total	$	149,926
										All outstanding liabilities before 2009, net of reinsurance										17,918
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	209,683
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		4.5	%	15.3	%	18.9	%	17.0	%	10.0	%	8.2	%	7.4	%	3.8	%	0.2	%	0.0	%

Casualty - Claims Made
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	12,918	$	13,703	$	9,687	$	13,562	$	11,710	$	13,117	$	12,810	$	12,053	$	11,827	$	16,056		$	398	383
2010				13,690		15,556		9,776		10,429		11,689		10,581		9,175		9,024		8,735			219	502
2011						17,416		17,454		12,260		10,619		8,510		7,720		7,852		11,506			640	682
2012								27,576		26,144		20,727		19,590		18,022		17,612		17,569			1,251	803
2013										40,095		41,488		44,054		40,288		38,473		37,959			3,751	1,042
2014												53,929		55,386		58,152		55,350		51,554			7,271	1,304
2015														55,006		47,831		42,206		39,906			10,559	1,335
2016																59,992		67,760		69,493			23,817	1,500
2017																		60,572		62,450			35,365	1,627
2018																				66,128			50,820	1,272
																		Total	$	381,356
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	113	$	442	$	773	$	3,413	$	5,176	$	10,678	$	11,217	$	11,398	$	11,475	$	11,955
2010				259		1,548		2,308		3,626		5,733		5,749		6,956		8,485		8,512
2011						330		1,949		4,508		5,947		5,637		6,209		6,835		7,132
2012								433		4,086		6,898		9,218		10,968		14,378		15,621
2013										792		7,073		18,425		26,121		29,678		32,789
2014												1,705		9,775		27,923		35,755		40,080
2015														2,215		10,738		16,774		20,920
2016																2,060		14,558		27,465
2017																		2,455		11,350
2018																				1,964
	* Presented as unaudited required supplementary information.																	Total	$	177,788
										All outstanding liabilities before 2009, net of reinsurance										933
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	204,501
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		3.0	%	15.3	%	18.5	%	14.7	%	10.0	%	13.4	%	7.4	%	7.1	%	0.4	%	3.0	%

Casualty - Transportation
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	26,349	$	23,366	$	23,174	$	22,929	$	22,613	$	22,340	$	21,958	$	21,969	$	21,926	$	21,911		$	19	2,644
2010				27,239		23,390		24,912		25,593		23,981		23,625		23,701		23,786		23,776			44	2,843
2011						22,957		23,479		25,747		25,272		25,431		25,376		25,167		25,614			52	2,469
2012								21,452		22,203		22,924		23,511		23,689		23,620		23,305			76	2,284
2013										32,742		32,853		32,989		37,673		38,811		39,974			350	2,852
2014												38,361		33,015		36,452		38,590		40,202			911	3,099
2015														38,561		46,258		47,021		46,395			3,824	3,179
2016																50,430		53,519		54,105			7,632	3,920
2017																		55,640		53,641			16,406	3,597
2018																				57,597			16,690	3,154
																		Total	$	386,520
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	5,035	$	8,698	$	14,613	$	19,933	$	21,100	$	21,325	$	21,640	$	21,650	$	21,650	$	21,650
2010				6,296		10,116		15,475		20,045		21,792		23,063		23,488		23,533		23,556
2011						5,295		9,485		14,477		19,443		22,375		23,537		23,941		24,377
2012								4,466		8,533		12,394		17,318		20,931		22,566		22,730
2013										5,306		11,978		19,761		28,220		33,480		35,923
2014												7,125		13,933		19,676		27,457		33,190
2015														6,984		20,709		29,554		37,222
2016																8,923		18,354		30,354
2017																		7,979		17,070
2018																				6,980
	* Presented as unaudited required supplementary information.																	Total	$	253,052
										All outstanding liabilities before 2009, net of reinsurance										90
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	133,558
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		17.9	%	18.2	%	20.1	%	20.2	%	11.2	%	4.8	%	1.4	%	0.6	%	0.0	%	0.0	%

Property
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	59,975	$	55,821	$	52,286	$	49,534	$	48,969	$	48,857	$	48,707	$	49,267	$	49,323	$	48,925		$	13	2,630
2010				63,194		59,145		55,427		53,937		54,153		52,927		52,964		52,952		52,903			29	2,851
2011						70,246		66,924		64,976		63,724		62,770		62,570		62,456		62,875			142	3,028
2012								85,485		80,155		79,181		77,569		79,175		78,125		78,161			167	2,640
2013										63,864		62,090		62,173		62,114		61,914		61,834			273	2,995
2014												56,587		49,441		48,801		48,761		49,217			315	4,560
2015														59,863		56,103		53,958		52,720			680	4,076
2016																62,900		55,594		55,384			2,093	3,369
2017																		90,803		83,273			9,346	2,873
2018																				89,091			23,235	2,030
																		Total	$	634,383
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	25,464	$	40,775	$	43,758	$	46,004	$	48,031	$	48,297	$	48,329	$	49,051	$	49,173	$	48,898
2010				25,274		43,091		47,743		50,055		52,729		52,426		52,719		52,851		52,855
2011						27,676		48,756		55,778		59,099		60,272		61,428		61,834		62,729
2012								39,074		66,509		72,057		73,705		75,640		76,152		77,159
2013										32,208		50,840		57,407		59,259		60,520		61,195
2014												30,550		43,380		46,148		46,528		47,799
2015														32,184		49,348		50,197		51,290
2016																33,134		46,921		51,371
2017																		41,314		66,818
2018																				37,048
	* Presented as unaudited required supplementary information.																	Total	$	557,162
										All outstanding liabilities before 2009, net of reinsurance										17
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	77,238
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		52.0	%	30.9	%	7.4	%	3.2	%	3.0	%	0.7	%	0.6	%	1.0	%	0.1	%	-0.6	%

Surety
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	15,474	$	4,896	$	4,708	$	4,246	$	4,146	$	4,551	$	4,288	$	4,923	$	4,860	$	4,935		$	2	1,665
2010				13,961		8,205		6,630		7,076		6,810		7,136		7,645		6,244		6,580			14	1,540
2011						13,842		17,832		17,792		17,321		16,766		16,695		16,480		18,281			13	1,674
2012								17,114		11,452		8,667		8,180		7,867		7,471		7,099			22	1,469
2013										16,080		7,516		6,170		5,399		5,271		5,231			50	1,400
2014												16,450		8,106		5,225		4,427		4,267			88	1,337
2015														16,958		12,957		11,113		10,456			824	1,201
2016																18,928		11,062		9,351			1,543	1,307
2017																		16,127		8,641			3,630	1,409
2018																				16,765			14,535	654
																		Total	$	91,606
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	892	$	1,914	$	2,382	$	2,493	$	3,490	$	4,336	$	3,919	$	3,908	$	4,849	$	4,933
2010				1,724		3,205		5,702		7,092		7,151		7,285		7,822		6,663		6,637
2011						8,160		16,932		17,151		17,403		17,212		17,086		17,086		17,013
2012								1,883		6,680		6,726		7,416		7,536		7,406		7,065
2013										1,116		2,856		4,701		4,911		5,098		5,150
2014												722		4,283		4,166		4,059		4,131
2015														3,192		6,719		7,695		9,436
2016																3,087		5,817		6,299
2017																		979		2,862
2018																				1,835
	* Presented as unaudited required supplementary information.																	Total	$	65,361
										All outstanding liabilities before 2009, net of reinsurance										1,992
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	28,237
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		24.0	%	40.0	%	12.0	%	7.5	%	4.5	%	3.5	%	-1.3	%	-6.1	%	9.3	%	1.7	%

The following is a reconciliation of the net incurred and paid loss development tables to the liability for unpaid losses and settlement expenses in the consolidated balance sheet:

Reconciliation of the Disclosure of Incurred and Paid Loss Development to the Liability for Unpaid Losses and Settlement Expenses
(in thousands)	December 31, 2018		December 31, 2017
Net outstanding liabilities:
Casualty - Primary Occurrence	$	372,450	$	325,182
Casualty - Excess Occurrence		209,683		188,963
Casualty - Claims Made		204,501		171,241
Casualty - Transportation		133,558		119,704
Property		77,238		68,867
Surety		28,237		23,375
Unallocated loss adjustment expenses		50,891		48,844
Allowance for uncollectible reinsurance balances recoverable on unpaid losses and settlement expenses		9,793		10,014
Other		9,998		13,322
Liabilities for unpaid loss and settlement expenses, net of reinsurance	$	1,096,349	$	969,512
Reinsurance recoverable on unpaid claims:
Casualty - Primary Occurrence	$	34,742	$	36,158
Casualty - Excess Occurrence		81,072		74,400
Casualty - Claims Made		144,921		117,436
Casualty - Transportation		50,748		46,590
Property		50,495		28,613
Surety		11,834		7,079
Allowance for uncollectible reinsurance balances recoverable on unpaid losses and settlement expenses		(9,793)		(10,014)
Other		980		1,729
Total reinsurance balances recoverable on unpaid losses and settlement expenses	$	364,999	$	301,991
Total gross liability for unpaid loss and settlement expenses	$	1,461,348	$	1,271,503

DETERMINATION OF IBNR

Initial carried IBNR reserves are determined through a reserve estimation process. For most casualty and surety products, this process involves the use of an initial loss and allocated loss adjustment expense (ALAE) ratio that is applied to the earned premium for a given period. Payments and case reserves are subtracted from this initial estimate of ultimate loss and ALAE to determine a carried IBNR reserve. For most property products, the IBNR reserves are determined by IBNR percentages applied to premium earned. The percentages are determined based on historical reporting patterns and are updated periodically. No deductions for paid or case reserves are made. Shortly after natural or man-made catastrophes, we review insured locations exposed to the event and model losses based on our own exposures and industry loss estimates of the event. We also consider our knowledge of frequency and severity from early claim reports to determine an appropriate reserve for the catastrophe. Adjustments to the initial loss ratio by product and segment are made where necessary and reflect updated assumptions regarding loss experience, loss trends, price changes and prevailing risk factors.

Actuaries perform a ground-up reserve study of the expected value of the unpaid loss and LAE derived using multiple standard actuarial methodologies on a quarterly basis. Each method produces an estimate of ultimate loss by accident year. We review all of these various estimates and assign weights to each based on the characteristics of the product being reviewed. These estimates are then compared to the carried loss reserves to determine the appropriateness of the current reserve balance. In addition, an emergence analysis is completed quarterly to determine if further adjustments are necessary.

Upon completion of our loss and LAE estimation analysis, a review of the resulting variance between the indicated reserves and the carried reserves takes place. Our actuaries make a recommendation to management in regards to booked reserves that reflect their analytical assessment and view of estimation risk. After discussion of these analyses and all relevant risk factors, the Loss Reserve Committee, a panel of management including the lead reserving actuary, chief executive officer, chief operating officer, chief financial officer and other executives, confirms the appropriateness of the reserve balances.

DEVELOPMENT OF IBNR RESERVES

The following table summarizes our prior accident years’ loss reserve development by segment for 2018, 2017 and 2016:

(FAVORABLE)/UNFAVORABLE RESERVE DEVELOPMENT BY SEGMENT
(in thousands)	2018		2017		2016
Casualty	$	(33,252)	$	(17,462)	$	(32,401)
Property		(10,813)		(12,134)		(4,793)
Surety		(5,885)		(9,272)		(4,800)
Total	$	(49,950)	$	(38,868)	$	(41,994)

A discussion of significant components of reserve development for the three most recent calendar years follows:

2018.    We experienced favorable emergence relative to prior years’ reserve estimates in all of our segments during 2018. Development from the casualty segment totaled $33.3 million, inclusive of unallocated loss and adjustment expenses (ULAE). The largest amounts of favorable development came from accident years 2015 through 2017. We continued to experience emergence that was generally better than previously estimated. We attribute the favorable emergence to loss trends in most lines outperforming our long-term expectations. Further, we believe our underwriters’ risk selection contributed to the Company experiencing less loss cost inflation than originally anticipated. The primary occurrence grouping had favorable development of $15.6 million, driven by our general liability product with $6.7 million of favorable development. The excess occurrence grouping had favorable development of $21.4 million, with commercial insureds contributing $10.8 million and personal insureds contributing the remainder. Claims made exposures had adverse development of $3.9 million driven by medical errors and omissions coverages. Transportation had $0.5 million of favorable development.

Our marine product was the predominant driver of the favorable development in the property segment, accounting for $5.0 million of the $10.8 million total favorable development for the segment, inclusive of ULAE. Accident years 2015 through 2017 made the largest contribution. Our excess and surplus lines commercial property product and assumed reinsurance products also contributed $2.0 million and $2.8 million of favorable development, respectively.

The surety segment experienced $5.9 million of favorable development, inclusive of ULAE. The majority of the favorable development came from the 2017 accident year, which served to offset the unfavorable development from accident years 2011 and 2016. Commercial and energy surety contributed favorable development of $4.6 million and $1.7 million, respectively. Miscellaneous surety experienced adverse development totaling $0.8 million.

2017.  We experienced favorable emergence relative to prior years’ reserve estimates in all of our segments during 2017. The casualty segment contributed $17.5 million in favorable development, inclusive of ULAE. Accident years 2014, 2015 and 2016 contributed significantly to the favorable development. This was predominantly caused by favorable frequency and severity trends that continued to be better than our long-term expectations. In addition, we believe this to be the result of our underwriters’ risk selection, which has mostly offset price declines and loss cost inflation. Nearly all of our casualty products contributed to the favorable development. Within the primary occurrence grouping, the general liability product contributed $4.6 million to our favorable development with all coverages contributing to the favorable development in 2017. Small commercial products were the second largest contributor with $3.2 million in favorable development. Within the excess occurrence grouping, personal umbrella and commercial excess were favorable by $1.1 million and $9.9 million, respectively. Within the claims made grouping, our executive products had favorable contributions of $4.4 million, while medical professional liability was adverse $3.7 million. Transportation was adverse $7.4 million for the year, but posted favorable experience during the last three quarters of the year.

The marine product was the primary driver of the favorable development in the property segment. Marine contributed $6.8 million of the $12.1 million total favorable property development, inclusive of ULAE. Accident years 2015 and 2016 contributed to the marine products’ favorable development. Commercial property was favorable $3.2 million.

The surety segment experienced favorable development of $9.3 million, inclusive of ULAE. The majority of the favorable development was from accident year 2016. Contract and commercial surety products were the main contributors with favorable development of $4.4 million and $3.5 million, respectively. Energy surety had favorable development of $1.5 million and miscellaneous surety had unfavorable development of $0.1 million.

2016.  We experienced favorable emergence relative to prior years’ reserve estimates in all of our segments during 2016. The casualty segment contributed $32.4 million in favorable development, inclusive of ULAE, which is excluded from the incurred loss and loss adjustment expense tables above. Accident year 2015 contributed significantly to the favorable development, with accident years 2010 to 2014 also continuing to develop favorably. The favorable development in 2016 was smaller than 2015 but continued to reflect favorable frequency and severity trends. In addition, the risk selection by our underwriters continued to provide better results than estimated in our reserving process. Within the primary occurrence grouping, the general liability product contributed $17.6 million to our favorable development. Small commercial products were favorable by $6.2 million. Within the excess occurrence grouping, commercial excess was favorable by $13.8 million which was offset by adverse development in our personal umbrella product of $4.9 million. Within the claims made grouping, executive products contributed $14.7 million in favorable development and miscellaneous professional liability had $0.8 million of favorable development. Transportation experienced unfavorable development of $15.4 million as adverse commercial loss trends resulted in an increase in case reserves for accident years 2013 through 2015.

Marine contributed $2.1 million of the $4.8 million total favorable property development, inclusive of ULAE. Accident years 2013 through 2015 contributed to the marine products’ favorable development. Assumed property contributed $2.5 million of favorable development offsetting the unfavorable development of $0.2 million in other direct property products.

The surety segment experienced favorable development of $4.8 million, inclusive of ULAE. The majority of the favorable development was from accident year 2015, which offset the unfavorable development from accident years 2008 through 2011 and 2014. Commercial and energy surety products were the main contributors with favorable development of $1.7 million and $1.9 million, respectively. Miscellaneous surety had favorable development of $1.1 million and contract surety had favorable development of $0.1 million.

ENVIRONMENTAL, ASBESTOS AND MASS TORT EXPOSURES

We are subject to environmental site cleanup, asbestos removal and mass tort claims and exposures through our commercial excess, general liability and discontinued assumed casualty reinsurance lines of business. The majority of the exposure is in the excess layers of our commercial excess and assumed reinsurance books of business.

The following table represents paid and unpaid environmental, asbestos and mass tort claims data (including incurred but not reported losses) as of December 31, 2018, 2017 and 2016:

(in thousands)	2018		2017		2016
Loss and LAE Payments (Cumulative):
Gross	$	136,043	$	132,883	$	130,358
Ceded		(68,638)		(67,507)		(66,644)
Net	$	67,405	$	65,376	$	63,714
Unpaid Losses and LAE at End of Year:
Gross	$	24,262	$	28,042	$	28,815
Ceded		(5,373)		(5,715)		(4,987)
Net	$	18,889	$	22,327	$	23,828

Our environmental, asbestos and mass tort exposure is limited, relative to other insurers, as a result of entering the affected liability lines after the insurance industry had already recognized environmental and asbestos exposure as a problem and adopted appropriate coverage exclusions. The majority of our reserves are associated with products that went into runoff at least two decades ago. Some are for assumed reinsurance, some are for excess liability business and some followed from the acquisition of Underwriters Indemnity Company in 1999.

During 2018, inception to date incurred environmental, asbestos and mass tort losses decreased slightly.

While our environmental exposure is limited, the ultimate liability for this exposure is difficult to assess because of the extensive and complicated litigation involved in the settlement of claims and evolving legislation on issues such as joint and several liability, retroactive liability and standards of cleanup. Additionally, we participate primarily in the excess layers of coverage, where accurate estimates of ultimate loss are more difficult to derive than for primary coverage.

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INCOME TAXES

12 Months Ended

Dec. 31, 2018

INCOME TAXES

INCOME TAXES

7. INCOME TAXES

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are summarized as follows:

(in thousands)	2018		2017
Deferred tax assets:
Tax discounting of unpaid losses and settlement expenses	$	18,327	$	20,020
Unearned premium offset		17,864		16,528
Deferred compensation		2,700		1,435
Stock option expense		2,702		2,283
Other		616		578
Deferred tax assets before allowance	$	42,209	$	40,844
Less valuation allowance		—		—
Total deferred tax assets	$	42,209	$	40,844
Deferred tax liabilities:
Net unrealized appreciation of securities	$	22,177	$	51,448
Deferred policy acquisition costs		17,836		16,320
Discounting of unpaid losses and settlement expenses - TCJA implementation offset		5,203		9,466
Book/tax depreciation		3,133		3,159
Intangible assets		1,711		584
Undistributed earnings of unconsolidated investees		15,811		13,431
Other		576		204
Total deferred tax liabilities	$	66,447	$	94,612
Net deferred tax liability	$	(24,238)	$	(53,768)

Income tax expense (benefit) attributable to income from operations for the years ended December 31, 2018, 2017 and 2016, differed from the amounts computed by applying the U.S. federal tax rate of 21 percent, 35 percent and 35 percent, respectively, to pretax income from continuing operations as demonstrated in the following table:

(in thousands)	2018					2017					2016
Provision for income taxes at the statutory federal tax rates	$	14,192		21.0	%	$	29,606		35.0	%	$	54,979		35.0	%
Increase (reduction) in taxes resulting from:
Enactment of Tax Cuts and Jobs Act (TCJA)		(2,268)		(3.4)	%		(32,821)		(38.8)	%		—		—	%
Excess tax benefit on share-based compensation		(4,533)		(6.7)	%		(5,798)		(6.9)	%		—		—	%
Dividends received deduction		(775)		(1.1)	%		(2,025)		(2.4)	%		(2,216)		(1.4)	%
ESOP dividends paid deduction		(1,184)		(1.8)	%		(2,905)		(3.4)	%		(3,302)		(2.1)	%
Tax-exempt interest income		(1,795)		(2.7)	%		(4,671)		(5.5)	%		(4,263)		(2.7)	%
Unconsolidated investee dividends		—		—	%		(1,351)		(1.6)	%		(2,772)		(1.8)	%
Other items, net		(235)		(0.3)	%		(474)		(0.6)	%		(264)		(0.2)	%
Total	$	3,402		5.0	%	$	(20,439)		(24.2)	%	$	42,162		26.8	%

Our effective tax rates were 5.0 percent, -24.2 percent and 26.8 percent for 2018, 2017 and 2016, respectively. Effective rates are dependent upon components of pretax earnings and the related tax effects. While the effective rate was low in 2018, it was significantly lower in 2017 as a result of the impact of tax reform. Major factors contributing to the low rate in 2018 are the inclusion of unrealized losses from equity securities in pretax earnings in 2018, a reduced federal tax rate and adjustments to provisional deferred tax amounts recorded in 2017.

Among other provisions, the TCJA lowered the federal corporate tax rate from 35 percent to 21 percent effective January 1, 2018. Our deferred tax items were revalued as of year-end 2017 to reflect the lower rate, which reduced our net deferred tax liability and income tax expense by $32.8 million and decreased the effective tax rate by 38.8 percent.

Except for two aspects, the accounting for the tax effects of the enactment of the TCJA were completed as of December 31, 2017. The first provisional item recorded in 2017 was related to an expected disallowance of deductions for certain performance based compensation, including bonuses and stock options. At the time of enactment, there was a lack of clarity on whether some amounts could be grandfathered in as deductible. The Internal Revenue Service (IRS) and Treasury Department provided additional guidance and we were able to finalize the accounting in 2018 by recording a $2.3 million deferred tax benefit to restore the deferred tax assets related to those performance based compensation amounts. The second provisional item related to discount factors on loss reserves that the IRS had not yet published. The IRS published the factors in the fourth quarter of 2018 and we were able to complete the accounting for the effects of the enactment of the TCJA. While there was no net impact to the deferred tax amount that was recorded at December 31, 2017, we implemented the new discounting methodology and will recognize the adjustment ratably over the allowed eight-year period beginning in 2018.

New accounting guidance required the excess tax benefit on share-based compensation to flow through income tax expense beginning in 2017. Prior to the adoption, excess tax benefits on share-based compensation were recorded directly to shareholders’ equity and had no impact on the effective tax rate. Due to the new accounting method, we recognized a $4.5 million and $5.8 million tax benefit in 2018 and 2017, respectively, which decreased the effective tax rate by 6.7 percent and 6.9 percent, respectively.

Our net earnings include equity in earnings of unconsolidated investees, Maui Jim and Prime. The investees do not have a policy or pattern of paying dividends. As a result, we record a deferred tax liability on the earnings at the recently revised corporate capital gains rate of 21 percent in anticipation of recovering our investments through means other than through the receipt of dividends, such as a sale. In the fourth quarter of 2017, Maui Jim gave notification that a $9.9 million dividend would be paid in January 2018. Even though no dividend was received in 2017, we were aware that the lower tax rate applicable to affiliated dividends (7.4 percent in 2018) would be applied when the dividend was paid in 2018 and we therefore recorded a $1.4 million tax benefit in 2017. We received a $9.9 million dividend from Maui Jim in the fourth quarter of 2016 and recognized a $2.8 million tax benefit from applying the lower tax rate applicable to affiliated dividends (7.0 percent in 2016), as compared to the corporate capital gains rate on which the deferred tax liabilities were based. Standing alone, the dividends resulted in a 1.6 percent and 1.8 percent reduction to the 2017 and 2016 effective tax rates, respectively. As no additional dividends were declared from unconsolidated investees in 2018, there was no impact to the 2018 effective tax rate.

Dividends paid to our Employee Stock Ownership Plan (ESOP) also result in a tax deduction. Dividends paid to the ESOP in 2018, 2017 and 2016 resulted in tax benefits of $1.2 million, $2.9 million and $3.3 million, respectively. These tax benefits reduced the effective tax rate for 2018, 2017 and 2016 by 1.8 percent, 3.4 percent and 2.1 percent, respectively.

We have recorded our deferred tax assets and liabilities using the statutory federal tax rate of 21 percent. We believe it is more likely than not that all deferred tax assets will be recovered, given the carry back availability as well as the results of future operations, which will generate sufficient taxable income to realize the deferred tax asset. In addition, we believe when these deferred items reverse in future years, our taxable income will be taxed at an effective rate of 21 percent.

Federal and state income taxes paid in 2018, 2017 and 2016, amounted to $16.4 million, $10.4 million and $26.9 million, respectively.

Although we are not currently under audit by the IRS, tax years 2015 through 2018 remain open and are subject to examination.

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EMPLOYEE BENEFITS

12 Months Ended

Dec. 31, 2018

EMPLOYEE BENEFITS

EMPLOYEE BENEFITS

8. EMPLOYEE BENEFITS

EMPLOYEE STOCK OWNERSHIP, 401(K) AND INCENTIVE PLANS

We maintain ESOP, 401(k) and incentive plans covering executives, managers and associates. Funding of these plans is primarily dependent upon reaching predetermined levels of operating return on equity, combined ratio and Market Value Potential (MVP). MVP is a compensation model that measures components of comprehensive earnings against a minimum required return on our capital. Bonuses are earned as we generate earnings in excess of this required return. While some management incentive plans may be affected somewhat by other performance factors, the larger influence of corporate performance ensures that the interests of our executives, managers and associates align with those of our shareholders.

Our 401(k) plan allows voluntary contributions by employees and permits ESOP diversification transfers for employees meeting certain age and service requirements. We provide a basic 401(k) contribution of 3 percent of eligible compensation. Participants are 100 percent vested in both voluntary and basic contributions. Additionally, an annual discretionary profit-sharing contribution may be made to the ESOP and 401(k), subject to the achievement of certain overall financial goals and board approval. Profit-sharing contributions vest after three years of plan service.

Our ESOP and 401(k) cover all employees meeting eligibility requirements. ESOP and 401(k) profit-sharing contributions are approved annually by our board of directors and are expensed in the year earned. ESOP and 401(k)-related expenses (basic and profit-sharing) were $8.8 million, $12.5 million and $11.7 million, for 2018, 2017 and 2016, respectively.

During 2018, the ESOP purchased 98,717 shares of RLI Corp. stock on the open market at an average price of $62.80  ($6.2 million) relating to the contribution for plan year 2017. Shares held by the ESOP as of December 31, 2018, totaled 2,985,390 and are treated as outstanding in computing our earnings per share. During 2017, the ESOP purchased 124,186 shares of RLI Corp. stock on the open market at an average price of $58.02  ($7.2 million) relating to the contribution for plan year 2016. During 2016, the ESOP purchased 112,608 shares of RLI Corp. stock on the open market at an average price of $64.20  ($7.2 million) relating to the contribution for plan year 2015. The above-mentioned ESOP purchases relate only to our annual contributions to the plan and do not include amounts or shares resulting from the reinvestment of dividends.

Annual awards are provided to executives, managers and associates through our incentive plans, provided certain financial and operational goals are met. Annual expenses for these incentive plans totaled $11.9 million, $19.7 million and $19.2 million for 2018, 2017 and 2016, respectively.

DEFERRED COMPENSATION

We maintain rabbi trusts for deferred compensation plans for directors, key employees and executive officers through which our shares are purchased. The employer stock in the plan is classified and accounted for as equity, in a manner consistent with the accounting for treasury stock.

In 2018, the trusts purchased 7,049 shares of our common stock on the open market at an average price of $68.36  ($0.5 million). In 2017, the trusts purchased 7,464 shares of our common stock on the open market at an average price of $58.66  ($0.4 million). In 2016, the trusts purchased 6,702 shares of our common stock on the open market at an average price of $61.61  ($0.4 million). At December 31, 2018, the trusts’ assets were valued at $36.2 million.

STOCK PLANS

Our RLI Corp. Long-Term Incentive Plan (2010 LTIP) was in place from 2010 to 2015. The 2010 LTIP provided for equity-based compensation, including stock options, up to a maximum of 4,000,000 shares of common stock (subject to adjustment for changes in our capitalization and other events). Between 2010 and 2015, we granted 2,878,000 stock options under the 2010 LTIP. The 2010 LTIP was replaced in 2015.

In 2015, our shareholders approved the 2015 RLI Corp. Long-Term Incentive Plan (2015 LTIP), which provides for equity-based compensation and replaced the 2010 LTIP. In conjunction with the adoption of the 2015 LTIP, effective May 7, 2015, options were no longer granted under the 2010 LTIP. Awards under the 2015 LTIP may be in the form of restricted stock, stock options (non-qualified only), stock appreciation rights, performance units as well as other stock-based awards. Eligibility under the 2015 LTIP is limited to employees and directors of the company or any affiliate. The granting of awards under the 2015 LTIP is solely at the discretion of the board of directors. The maximum number of shares of common stock available for distribution under the 2015 LTIP is 4,000,000 shares (subject to adjustment for changes in our capitalization and other events). Since the plan’s approval in 2015, we have granted 1,903,630 awards under the 2015 LTIP, including 455,055 in 2018.

Stock Options

Under the 2015 LTIP, as under the 2010 LTIP, we grant stock options for shares with an exercise price equal to the fair market value of the shares at the date of grant (subject to adjustments for changes in our capitalization, including special dividends and other events as set forth in such plans). Options generally vest and become exercisable ratably over a five-year period and expire eight years after grant.

For most participants, the requisite service period and vesting period will be the same. For participants who are retirement eligible, defined by the plan as those individuals whose age and years of service equals 75, the requisite service period is deemed to be met and options are immediately expensed on the date of grant. For participants who will become retirement eligible during the vesting period, the requisite service period over which expense is recognized is the period between the grant date and the attainment of retirement eligibility. Shares issued upon option exercise are newly issued shares.

Shares issued may be less than the number of shares actually exercised, as our plan allows net settlement to cover the option exercise price and taxes due upon option exercise. When options are exercised via net settlement, amounts withheld for taxes result in a decrease to shareholders’ equity and the degree of the impact is dependent on the level of intrinsic value (i.e. market value in excess of exercise price). During 2016, the number of option exercises facilitated via net settlement and the level of intrinsic value on those exercises resulted in a decrease to paid-in-capital, as the reduction from tax withholdings exceeded the impact of other share-based compensation activity. This was not the case in 2018 and 2017, and the impacts of share-based compensation increased paid-in-capital. Refer to our consolidated statements of shareholders’ equity to see the impact share-based compensation had on shareholders’ equity. Prior to the adoption of FASB ASU 2016-09 in 2017, shareholders’ equity was also impacted by corporate tax deductions allowed as a result of option exercises. This tax benefit offset our current tax liability and was recorded as an increase to paid-in-capital. Beginning in 2017, all tax effects related to share-based payments were required to be recorded in net earnings and directly impact our effective tax rate. See note 7 for the impact in 2018 and 2017. For 2016, refer to our consolidated statements of shareholders’ equity for the impact to paid-in capital from this tax benefit.

The following tables summarize option activity in 2018, 2017 and 2016:

				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2018	2,257,015	$	46.80
Options granted	432,000	$	64.91
Options exercised	(705,785)	$	36.81		$	24,304
Options canceled/forfeited	(18,350)	$	60.84
Outstanding options at December 31, 2018	1,964,880	$	54.24	5.25	$	29,317
Exercisable options at December 31, 2018	724,730	$	46.62	3.79	$	16,212

				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2017	2,207,110	$	40.90
Options granted	482,375	$	57.12
Options exercised	(390,870)	$	26.07		$	12,779
Options canceled/forfeited	(41,600)	$	48.30
Outstanding options at December 31, 2017	2,257,015	$	46.80	4.88	$	32,620
Exercisable options at December 31, 2017	975,055	$	38.66	3.25	$	21,780

				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2016	2,582,220	$	32.42
Options granted	440,750	$	63.54
Options exercised	(756,380)	$	24.87		$	31,328
Options canceled/forfeited	(59,480)	$	44.39
Outstanding options at December 31, 2016	2,207,110	$	40.90	4.93	$	49,531
Exercisable options at December 31, 2016	862,605	$	31.23	3.27	$	27,523

The majority of our stock options are granted annually at our regular board meeting in May. In addition, options are approved at the May meeting for quarterly grants to certain retirement eligible employees. Since stock option grants to retirement eligible employees are fully expensed when granted, the approach allows for a more even expense distribution throughout the year.

In 2018, 432,000 options were granted with an average exercise price of $64.91 and an average fair value of $10.58. Of these grants, 330,750 were granted at the board meeting in May with a calculated fair value of $10.31. We recognized $4.5 million of expense during 2018 related to options vesting. Since options granted under our plan are non-qualified, we recorded a deferred tax benefit of $0.9 million related to this compensation expense. Total unrecognized compensation expense relating to outstanding and unvested options was $5.6 million, which will be recognized over the remainder of the vesting period.

In 2017, 482,375 options were granted with an average exercise price of $57.12 and an average fair value of $8.00. Of these grants, 384,750 were granted at the board meeting in May with a calculated fair value of $7.91. We recognized $4.4 million of expense during 2017 related to options vesting. Since options granted under our plan are non-qualified, we recorded a deferred tax benefit of $1.5 million related to this compensation expense. Total unrecognized compensation expense relating to outstanding and unvested options was $5.7 million, which will be recognized over the remainder of the vesting period.

In 2016, 440,750 options were granted with an average exercise price of $63.54 and an average fair value of $11.38. Of these grants, 345,750 were granted at the board meeting in May with a calculated fair value of $11.42. We recognized $4.1 million of expense during 2016 related to options vesting. Since options granted under our plan are non-qualified, we recorded a deferred tax benefit of $1.4 million related to this compensation expense. Total unrecognized compensation expense relating to outstanding and unvested options was $6.2 million, which will be recognized over the remainder of the vesting period.

The fair value of options were estimated using a Black-Scholes based option pricing model with the following weighted-average grant-date assumptions and weighted-average fair values as of December 31:

	2018			2017			2016
Weighted-average fair value of grants	$	10.58		$	8.00		$	11.38
Risk-free interest rates		2.72	%		1.90	%		1.21	%
Dividend yield		2.98	%		3.60	%		1.61	%
Expected volatility		22.87	%		22.95	%		23.06	%
Expected option life		5.07	years		5.05	years		5.04	years

The risk-free rate was determined based on U.S. treasury yields that most closely approximated the option’s expected life. The dividend yield for 2018 and 2017 was determined based on the average annualized quarterly dividends paid during the most recent five-year period and incorporated a consideration for special dividends paid in recent history. The dividend yield in 2016 was calculated based on the average annualized dividends paid during the most recent five-year period, exclusive of consideration for special dividends. The expected volatility was calculated based on the median of the rolling volatilities for the expected life of the options. The expected option life was determined based on historical exercise behavior and the assumption that all outstanding options will be exercised at the midpoint of the current date and remaining contractual term, adjusted for the demographics of the current year’s grant.

Restricted Stock Units

In addition to stock options, restricted stock units (RSUs) are granted with a value equal to the closing stock price of the Company’s stock on the dates the shares are granted. Generally, these units have a three-year cliff vesting. When participants terminate employment with the Company after having met the definition of retirement under the 2015 LTIP, defined as those individuals whose age and years of service equals 75, the RSUs will become fully vested. In addition, RSUs have dividend participation which accrue as additional units and are settled with granted stock units at the end of the vesting period.

As of December 31, 2018, 30,075 RSUs have been granted to employees under the 2015 LTIP, including 14,625 during 2018. Due to dividend participation on RSUs, which accrue as additional units, 30,567 employee RSUs were outstanding as of December 31, 2018. We recognized $0.6 million and $0.4 million of expense on these units during 2018 and 2017, respectively. Total unrecognized compensation expense relating to outstanding and unvested employee RSUs was $0.7 million, which will be recognized over the remainder of the vesting period.

In 2018, each outside director received RSUs with a fair market value of $50,000 on the date of grant as part of annual director compensation. Director RSUs vest one year from the date of grant. As of December 31, 2018, 8,430 restricted stock units were granted to directors under the 2015 LTIP. Due to dividend participation on RSUs, which accrue as additional units, 8,629 director RSUs were outstanding as of December 31, 2018. We recognized $0.3 million of compensation expense on these units during 2018. Total unrecognized compensation expense relating to outstanding and unvested director RSUs was $0.2 million, which will be recognized over the remainder of the vesting period.

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STATUTORY INFORMATION AND DIVIDEND RESTRICTIONS

12 Months Ended

Dec. 31, 2018

STATUTORY INFORMATION AND DIVIDEND RESTRICTIONS

STATUTORY INFORMATION AND DIVIDEND RESTRICTIONS

9. STATUTORY INFORMATION AND DIVIDEND RESTRICTIONS

The statutory financial statements of our three insurance companies are presented on the basis of accounting practices prescribed or permitted by the Illinois Department of Insurance (IDOI), which has adopted the NAIC statutory accounting principles as the basis of its statutory accounting principles. We do not use any permitted statutory accounting principles that differ from NAIC prescribed statutory accounting principles. In converting from statutory to GAAP, typical adjustments include deferral of policy acquisition costs, the inclusion of statutory non-admitted assets and the inclusion of net unrealized holding gains or losses in shareholders’ equity relating to fixed income securities.

The NAIC has risk based capital (RBC) requirements for insurance companies to calculate and report information under a risk-based formula, which measures statutory capital and surplus needs based upon a regulatory definition of risk relative to the company’s balance sheet and mix of products. As of December 31, 2018, each of our insurance subsidiaries had an RBC amount in excess of the authorized control level RBC, as defined by the NAIC. RLI Insurance Company (RLI Ins.), our principal insurance company subsidiary, had an authorized control level RBC of $170.9 million, $157.7 million and $127.0 million as of December 31, 2018, 2017 and 2016, respectively, compared to actual statutory capital and surplus of $829.8 million, $864.6 million and $860.0 million, respectively, for these same periods.

Year-end statutory surplus for 2018 presented in the table below includes $132.8 million of RLI Corp. stock (cost basis of $64.6 million) held by Mt. Hawley Insurance Company, compared to $106.9 million and $104.4 million in 2017 and 2016, respectively. The Securities Valuation Office provides specific guidance for valuing this investment, which is eliminated in our GAAP consolidated financial statements.

The following table includes selected information for our insurance subsidiaries for the year ending and as of December 31:

(in thousands)	2018		2017		2016
Consolidated net income, statutory basis	$	135,791	$	72,889	$	128,165
Consolidated surplus, statutory basis	$	829,775	$	864,554	$	859,976

As discussed in note 1.A., our three insurance companies are subsidiaries of RLI Corp, with RLI Ins. as the first-level, or principal, insurance subsidiary. At the holding company (RLI Corp.) level, we rely largely on dividends from our insurance company subsidiaries to meet our obligations for paying principal and interest on outstanding debt, corporate expenses and dividends to RLI Corp. shareholders. As discussed further below, dividend payments to RLI Corp. from our principal insurance subsidiary are restricted by state insurance laws as to the amount that may be paid without prior approval of the insurance regulatory authorities of Illinois. As a result, we may not be able to receive dividends from such subsidiary at times and in amounts necessary to pay desired dividends to RLI Corp. shareholders. On a GAAP basis, as of December 31, 2018, our holding company had $806.8 million in equity. This includes amounts related to the equity of our insurance subsidiaries, which is subject to regulatory restrictions under state insurance laws. The unrestricted portion of holding company net assets is comprised primarily of investments and cash, including $63.1 million in liquid assets,  which more than covers our annual holding company expenditures. Unrestricted funds at the holding company are available to fund debt interest, general corporate obligations and regular dividend payments to our shareholders. If necessary, the holding company also has other potential sources of liquidity that could provide for additional funding to meet corporate obligations or pay shareholder dividends, which include a revolving line of credit, as well as access to capital markets.

Ordinary dividends, which may be paid by our principal insurance subsidiary without prior regulatory approval, are subject to certain limitations based upon statutory income, surplus and earned surplus. The maximum ordinary dividend distribution from our principal insurance subsidiary in a rolling 12-month period is limited by Illinois law to the greater of 10 percent of RLI Ins. policyholder surplus, as of December 31 of the preceding year, or the net income of RLI Ins. for the 12-month period ending December 31 of the preceding year. Ordinary dividends are further restricted by the requirement that they be paid from earned surplus. In 2018, 2017 and 2016, our principal insurance subsidiary paid ordinary dividends totaling $13.0 million, $107.0 million and $123.6 million, respectively, to RLI Corp. Any dividend distribution in excess of the ordinary dividend limits is deemed extraordinary and requires prior approval from the IDOI. In 2018, our principal insurance subsidiary sought and received regulatory approval prior to the payment of extraordinary dividends totaling $110.0 million. No extraordinary dividends were paid in 2017 or 2016. Given the amount of dividends paid during the prior rolling 12-month period, the net assets of our principal insurance subsidiary are restricted until the fourth quarter of 2019 and cannot be distributed to RLI Corp. without prior approval of the IDOI. In addition to restrictions from our principal subsidiary’s insurance regulator, we also consider internal models and how capital adequacy is defined by our rating agencies in determining amounts available for distribution. However, as discussed above, RLI Corp. had the necessary amount of unrestricted liquid net assets on hand at December 31, 2018 to cover normal annual holding company expenditures as they are incurred and become payable in 2019.

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COMMITMENTS AND CONTINGENT LIABILITIES

12 Months Ended

Dec. 31, 2018

COMMITMENTS AND CONTINGENT LIABILITIES

COMMITMENTS AND CONTINGENT LIABILITIES

10. COMMITMENTS AND CONTINGENT LIABILITIES

Other Litigation

We are party to numerous claims, losses and litigation matters that arise in the normal course of our business. Many of such claims, losses or litigation matters involve claims under policies that we underwrite as an insurer. We believe that the resolution of these claims and losses will not have a material adverse effect on our financial condition, results of operations or cash flows. We are also involved in various other legal proceedings and litigation unrelated to our insurance business that arise in the ordinary course of business operations. Management believes that any liabilities that may arise as a result of these legal matters will not have a material adverse effect on our financial condition, results of operations or cash flows.

Carriage Hill Associates Coverage Dispute

As reported in the Company’s Form 10-Q filed for the second and third quarters of 2018, Carriage Hill Associates of Charleston, LLC and certain other plaintiffs (collectively, “Plaintiffs”) filed a complaint in the Court of Common Pleas (the “Court”) for the Ninth Judicial Circuit of Berkeley County, South Carolina in December 2010 against Mt. Hawley Insurance Company (“Mt. Hawley”), a subsidiary of our principal subsidiary, RLI Insurance Company, relating to a coverage dispute. The complaint sought, among other things, compensatory damages, punitive damages and attorneys’ fees.

On May 25, 2018, the Court issued an Order finding in favor of Plaintiffs (the “Order”). The Court held that Mt. Hawley was responsible for compensatory damages relating to the alleged breach of duty to defend, breach of duty to indemnify and breach of duty of good faith totaling $21.7 million. The Court further held that Plaintiffs were entitled to attorneys’ fees and costs and that punitive damages were appropriate, with a hearing to be conducted at a later date to determine the amount of attorney fees and costs, and punitive damages.

Mt. Hawley vigorously contested all the claims against it in this matter and filed certain post-trial motions seeking to, among other things, vacate and withdraw the Order. As the result of Court-recommended mediation between the parties, all of the claims in this matter among all parties were settled on a confidential basis for an amount that did not have a material impact on the Company’s financial statements. On November 15, 2018, the Court vacated and withdrew the Order and the entire matter was dismissed with prejudice on November 28, 2018.

Commitments

We have operating lease obligations for regional office facilities. These leases expire in various years through 2035. Expenses associated with these leases totaled $6.9 million in 2018, $6.8 million in 2017 and $6.4 million in 2016. Minimum future rental payments under non-cancellable leases are as follows:

(in thousands)
2019	$	5,911
2020		6,019
2021		5,924
2022		5,884
2023		4,459
2024-2035		3,968
Total minimum future rental payments	$	32,165

As of December 31, 2018, we also had $18.8 million of unfunded commitments related to our investments in private funds and $7.4 million of unfunded commitments related to our low income housing tax credit investments. See note 2 for more information on these investments.

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OPERATING SEGMENT INFORMATION

12 Months Ended

Dec. 31, 2018

OPERATING SEGMENT INFORMATION

OPERATING SEGMENT INFORMATION

11. OPERATING SEGMENT INFORMATION

The segments of our insurance operations include casualty, property and surety. The casualty portion of our business consists largely of commercial excess, personal umbrella, general liability, transportation and executive products coverages, as well as package business and other specialty coverages, such as professional liability and workers’ compensation for office-based professionals. We offer fidelity and crime coverage for commercial insureds and select financial institutions and medical and healthcare professional liability coverage in the excess and surplus market. We also assume a limited amount of hard-to-place risks through a quota share reinsurance agreement. The casualty business is subject to the risk of estimating losses and related loss reserves because the ultimate settlement of a casualty claim may take several years to fully develop. The casualty segment is also subject to inflation risk and may be affected by evolving legislation and court decisions that define the extent of coverage and the amount of compensation due for injuries or losses.

Our property segment is comprised primarily of commercial fire, earthquake, difference in conditions and marine coverages. We also offer select personal lines policies, including homeowners’ coverages. Our property reinsurance and recreational vehicle products are in runoff after we began curtailing offerings at the end of 2015 and 2016, respectively. Property insurance results are subject to the variability introduced by perils such as earthquakes, fires and hurricanes. Our major catastrophe exposure is to losses caused by earthquakes, primarily on the West Coast. Our second largest catastrophe exposure is to losses caused by wind storms to commercial properties throughout the Gulf and East Coast, as well as to homes we insure in Hawaii. We limit our net aggregate exposure to a catastrophic event by minimizing the total policy limits written in a particular region, purchasing reinsurance and maintaining policy terms and conditions throughout market cycles. We also use computer-assisted modeling techniques to provide estimates that help the Company carefully manage the concentration of risks exposed to catastrophic events.

The surety segment specializes in writing small to large-sized commercial and contract surety coverages, as well as those for the energy, petrochemical and refining industries. We also offer miscellaneous bonds including license and permit, notary and court bonds. Often, our surety coverages involve a statutory requirement for bonds. While these bonds typically maintain a relatively low loss ratio, losses may fluctuate due to adverse economic conditions affecting the financial viability of our insureds. The contract surety product guarantees the construction work of a commercial contractor for a specific project. Generally, losses occur due to the deterioration of a contractor’s financial condition. This line has historically produced marginally higher loss ratios than other surety lines during economic downturns.

Net investment income consists of the interest and dividend income streams from our investments in fixed income and equity securities. Interest and general corporate expenses include the cost of debt, other director and shareholder relations costs and other compensation-related expenses incurred for the benefit of the corporation, but not attributable to the operations of our insurance segments. Investee earnings represent our share in Maui Jim and Prime earnings. We own 40 percent of Maui Jim, a privately-held company which operates in the sunglass and optical goods industries, and 23 percent of Prime Holdings Insurance Services, Inc., a privately-held insurance company which specializes in hard-to-place risks in the excess and surplus market and has recently expanded into certain coverages in the admitted market. Our investment in Maui Jim, which is carried at the holding company, is unrelated to our core insurance operations.

The following table summarizes our segment data based on the internal structure and reporting of information as it is used by management. The net earnings of each segment are before taxes and include revenues (if applicable), direct product or segment costs (such as commissions and claims costs), as well as allocated support costs from various support departments. While depreciation and amortization charges have been included in these measures via our expense allocation system, the related assets are not allocated for management use and, therefore, are not included in this schedule.

REVENUES
(in thousands)	2018		2017		2016
Casualty	$	523,472	$	478,603	$	454,843
Property		149,261		138,346		152,167
Surety		118,633		120,988		121,598
Net premiums earned	$	791,366	$	737,937	$	728,608
Net investment income		62,085		54,876		53,075
Net realized gains		63,407		4,411		34,645
Net unrealized losses on equity securities		(98,735)		—		—
Total	$	818,123	$	797,224	$	816,328

INSURANCE EXPENSES
(in thousands)	2018		2017		2016
Loss and settlement expenses:
Casualty	$	329,763	$	305,679	$	259,907
Property		83,822		85,027		71,350
Surety		14,608		10,878		18,521
Total net loss and settlement expenses	$	428,193	$	401,584	$	349,778
Policy acquisition costs:
Casualty	$	151,007	$	136,135	$	128,566
Property		51,830		51,070		54,167
Surety		64,901		65,310		66,879
Total policy acquisition costs	$	267,738	$	252,515	$	249,612
Other insurance expenses:
Casualty	$	31,562	$	32,885	$	30,040
Property		12,725		14,108		13,819
Surety		9,516		10,001		9,234
Total other insurance expenses	$	53,803	$	56,994	$	53,093
Total	$	749,734	$	711,093	$	652,483

NET EARNINGS (LOSSES)
(in thousands)	2018		2017		2016
Casualty	$	11,140	$	3,904	$	36,329
Property		884		(11,859)		12,832
Surety		29,608		34,799		26,964
Net underwriting income	$	41,632	$	26,844	$	76,125
Net investment income		62,085		54,876		53,075
Net realized gains		63,407		4,411		34,645
Net unrealized losses on equity securities		(98,735)		—		—
General corporate expense and interest on debt		(16,864)		(18,766)		(17,596)
Equity in earnings of unconsolidated investees		16,056		17,224		10,833
Total earnings before incomes taxes	$	67,581	$	84,589	$	157,082
Income tax expense (benefit)	$	3,402	$	(20,439)	$	42,162
Total	$	64,179	$	105,028	$	114,920

The following table further summarizes revenues by major product type within each segment:

NET PREMIUMS EARNED	Year ended December 31,
(in thousands)	2018		2017		2016
CASUALTY
Commercial excess and personal umbrella	$	124,350	$	115,543	$	111,079
General liability		93,928		90,283		86,853
Commercial transportation		81,053		78,061		81,402
Professional services		79,951		78,508		75,872
Small commercial		51,519		49,601		45,660
Executive products		21,326		18,086		18,755
Medical professional liability		16,042		17,072		17,449
Other casualty		55,303		31,449		17,773
Total	$	523,472	$	478,603	$	454,843
PROPERTY
Commercial property	$	71,501	$	63,117	$	68,165
Marine		59,795		50,931		48,301
Specialty personal		16,901		20,793		24,981
Other property		1,064		3,505		10,720
Total	$	149,261	$	138,346	$	152,167
SURETY
Miscellaneous	$	46,968	$	47,237	$	46,235
Contract		28,196		28,573		28,240
Commercial		26,751		27,625		29,105
Energy		16,718		17,553		18,018
Total	$	118,633	$	120,988	$	121,598
Grand total	$	791,366	$	737,937	$	728,608

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UNAUDITED INTERIM FINANCIAL INFORMATION

12 Months Ended

Dec. 31, 2018

UNAUDITED INTERIM FINANCIAL INFORMATION

UNAUDITED INTERIM FINANCIAL INFORMATION

12. UNAUDITED INTERIM FINANCIAL INFORMATION

Select unaudited quarterly information is as follows:

(in thousands, except per share data)	First		Second		Third		Fourth		Year
2018
Net premiums earned	$	190,027	$	196,522	$	200,815	$	204,002	$	791,366
Net investment income		14,232		14,577		16,314		16,962		62,085
Net realized gains (losses)		8,404		20,849		18,647		15,507		63,407
Net unrealized gains (losses) on equity securities		(26,772)		(12,611)		4,848		(64,200)		(98,735)
Earnings (losses) before income taxes		14,378		39,562		46,349		(32,708)		67,581
Net earnings (loss)		12,216		33,251		39,372		(20,660)		64,179
Basic earnings per share(1)	$	0.28	$	0.75	$	0.89	$	(0.46)	$	1.45
Diluted earnings per share(1)	$	0.27	$	0.74	$	0.88	$	(0.46)	$	1.43
2017
Net premiums earned	$	183,285	$	184,331	$	182,025	$	188,296	$	737,937
Net investment income		13,005		13,238		14,187		14,446		54,876
Net realized gains (losses)		624		(1,359)		35		5,111		4,411
Net unrealized gains (losses) on equity securities		—		—		—		—		—
Earnings (losses) before income taxes		26,443		34,036		(862)		24,972		84,589
Net earnings (loss)		19,828		26,208		1,734		57,258		105,028
Basic earnings per share(1)	$	0.45	$	0.60	$	0.04	$	1.30	$	2.39
Diluted earnings per share(1)	$	0.45	$	0.59	$	0.04	$	1.29	$	2.36

(1) Since the weighted-average shares for the quarters are calculated independently of the weighted-average shares for the year, quarterly earnings per share may not total to annual earnings per share. 

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SCHEDULE I-SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES

12 Months Ended

Dec. 31, 2018

SCHEDULE I-SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES

SCHEDULE I-SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES

RLI CORP. AND SUBSIDIARIES

SCHEDULE I—SUMMARY OF INVESTMENTS—OTHER THAN INVESTMENTS

IN RELATED PARTIES

December 31, 2018

Column A	Column B		Column C		Column D
					Amount at
(in thousands)					which shown in
Type of Investment	Cost (1)		Fair Value		the balance sheet
Fixed maturities:
Bonds:
Available-for-sale:
U.S. Government	$	199,982	$	200,229	$	200,229
U.S. Agency		31,716		31,904		31,904
Non-U.S. Government & Agency		8,170		7,639		7,639
Agency MBS		402,992		395,253		395,253
ABS/CMBS*		137,224		136,723		136,723
Corporate		681,909		668,679		668,679
Municipal		314,472		320,088		320,088
Total available-for-sale	$	1,776,465	$	1,760,515	$	1,760,515
Total fixed maturities	$	1,776,465	$	1,760,515	$	1,760,515
Equity securities:
Common stock:
Ind Misc & all other	$	98,879	$	177,040	$	177,040
ETFs (Ind/misc)		121,494		163,443		163,443
Total equity securities	$	220,373	$	340,483	$	340,483
Cash & short-term investments		41,690		41,690		41,690
Other invested assets		51,760		51,542		51,542
Total investments and cash	$	2,090,288	$	2,194,230	$	2,194,230

*Non-agency asset-backed & commercial mortgage-backed

Note: See notes 1E and 2 of Notes to Consolidated Financial Statements. See also the accompanying report of independent registered public accounting firm on page 108 of this report.

(1) Original cost of equity securities and, as to fixed maturities, original cost reduced by repayments and adjusted for amortization of premiums or accrual of discounts.

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SCHEDULE II-CONDENSED FINANCIAL INFORMATION OF REGISTRANT (PARENT COMPANY)

12 Months Ended

Dec. 31, 2018

SCHEDULE II-CONDENSED FINANCIAL INFORMATION OF REGISTRANT (PARENT COMPANY)

SCHEDULE II-CONDENSED FINANCIAL INFORMATION OF REGISTRANT (PARENT COMPANY)

RLI CORP. AND SUBSIDIARIES

SCHEDULE II—CONDENSED FINANCIAL INFORMATION OF REGISTRANT

(PARENT COMPANY)

CONDENSED BALANCE SHEETS

December 31,

(in thousands, except share data)	2018		2017
ASSETS
Cash	$	3,214	$	204
Short-term investments, at cost which approximates fair value		—		70
Accounts receivable, affiliates		—		1,057
Investments in subsidiaries		828,806		912,515
Investments in unconsolidated investee		79,521		77,720
Fixed income:
Available-for-sale, at fair value (amortized cost - $58,812 in 2018 and $23,184 in 2017)		59,878		23,210
Property and equipment, at cost, net of accumulated depreciation of $1,494 in 2018 and $1,426 in 2017		1,914		1,982
Income taxes receivable - current		—		1,542
Other assets		547		156
Total assets	$	973,880	$	1,018,456
LIABILITIES AND SHAREHOLDERS’ EQUITY
Liabilities:
Accounts payable, affiliates	$	130	$	—
Income taxes payable - current		32		—
Income taxes - deferred		15,081		13,207
Bonds payable, long-term debt		149,115		148,928
Interest payable, long-term debt		2,153		2,153
Other liabilities		527		570
Total liabilities	$	167,038	$	164,858
Shareholders’ equity:
Common stock ($0.01 par value in 2018 and $1.00 par value in 2017)
(100,000,000 share authorized, 67,434,257 shares issued and 44,504,043 shares outstanding in 2018)
(100,000,000 share authorized, 67,078,569 shares issued and 44,148,355 shares outstanding in 2017)	$	674	$	67,079
Paid-in capital		305,660		233,077
Accumulated other comprehensive earnings, net of tax		(14,572)		157,919
Retained earnings		908,079		788,522
Deferred compensation		8,354		8,640
Treasury stock, at cost (22,930,214 shares in 2018 and 2017)		(401,353)		(401,639)
Total shareholders’ equity	$	806,842	$	853,598
Total liabilities and shareholders’ equity	$	973,880	$	1,018,456

See Notes to Consolidated Financial Statements. See also the accompanying report of independent registered public accounting firm on page 108 of this report.

RLI CORP. AND SUBSIDIARIES

SCHEDULE II—CONDENSED FINANCIAL INFORMATION OF REGISTRANT

(PARENT COMPANY)—(continued)

CONDENSED STATEMENTS OF EARNINGS AND COMPREHENSIVE EARNINGS

Years ended December 31,

(in thousands)	2018		2017		2016
Net investment income	$	648	$	647	$	942
Net realized losses		(142)		(36)		(360)
Equity in earnings of unconsolidated investee		12,471		14,436		9,764
Selling, general and administrative expenses		(9,427)		(11,340)		(10,170)
Interest expense on debt		(7,437)		(7,426)		(7,426)
Loss before income taxes	$	(3,887)	$	(3,719)	$	(7,250)
Income tax benefit		(2,359)		(16,601)		(8,467)
Net earnings (loss) before equity in net earnings of subsidiaries	$	(1,528)	$	12,882	$	1,217
Equity in net earnings of subsidiaries		65,707		92,146		113,703
Net earnings	$	64,179	$	105,028	$	114,920
Other comprehensive income (loss), net of tax
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during the period	$	710	$	21	$	308
Less: reclassification adjustment for gains (losses) included in net earnings		112		6		(131)
Other comprehensive income - parent only	$	822	$	27	$	177
Equity in other comprehensive earnings (loss) of subsidiaries/investees		(34,819)		35,282		(1,341)
Other comprehensive earnings (loss)	$	(33,997)	$	35,309	$	(1,164)
Comprehensive earnings	$	30,182	$	140,337	$	113,756

See Notes to Consolidated Financial Statements. See also the accompanying report of independent registered public accounting firm on page 108 of this report.

RLI CORP. AND SUBSIDIARIES

SCHEDULE II—CONDENSED FINANCIAL INFORMATION OF REGISTRANT

(PARENT COMPANY)—(continued)

CONDENSED STATEMENTS OF CASH FLOWS

Years ended December 31,

(in thousands)	2018		2017		2016
Cash flows from operating activities
Earnings before equity in net earnings of subsidiaries	$	(1,528)	$	12,882	$	1,217
Adjustments to reconcile net losses to net cash provided by (used in) operating activities:
Net realized losses		142		36		360
Depreciation		68		77		196
Other items, net		(471)		595		560
Change in:
Affiliate balances receivable/payable		1,187		(930)		(535)
Federal income taxes		3,430		(6,874)		9,762
Stock option excess tax benefit		—		—		(9,576)
Changes in investment in unconsolidated investee:
Undistributed earnings		(12,471)		(14,436)		(9,764)
Dividends received		9,900		—		9,900
Net cash provided by (used in) operating activities	$	257	$	(8,650)	$	2,120
Cash flows from investing activities
Purchase of:
Fixed income, available-for-sale	$	(73,812)	$	(5,773)	$	(12,844)
Short-term investments, net		—		(47)		—
Sale of:
Fixed income, available-for-sale		12,056		24,771		4,981
Short-term investments, net		70		—		63
Property and equipment		—		128		—
Call or maturity of:
Fixed income, available-for-sale		75,662		3,499		6,859
Cash dividends received-subsidiaries		73,363		107,000		123,600
Net cash provided by investing activities	$	87,339	$	129,578	$	122,659
Cash flows from financing activities
Stock option excess tax benefit	$	—	$	—	$	9,576
Proceeds from stock option exercises		6,076		3,502		(741)
Cash dividends paid		(90,662)		(124,247)		(133,771)
Net cash used in financing activities	$	(84,586)	$	(120,745)	$	(124,936)
Net (decrease) increase in cash	$	3,010	$	183	$	(157)
Cash at beginning of year		204		21		178
Cash at end of year	$	3,214	$	204	$	21

Interest paid on outstanding debt amounted to $7.3 million for 2018, 2017 and 2016, respectively. See Notes to Consolidated Financial Statements. See also the accompanying report of independent registered public accounting firm on page 108 of this report.

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SCHEDULE III-SUPPLEMENTARY INSURANCE INFORMATION

12 Months Ended

Dec. 31, 2018

SCHEDULE III-SUPPLEMENTARY INSURANCE INFORMATION

SCHEDULE III-SUPPLEMENTARY INSURANCE INFORMATION

RLI CORP. AND SUBSIDIARIES

SCHEDULE III—SUPPLEMENTARY INSURANCE INFORMATION

As of and for the years ended December 31, 2018, 2017 and 2016

									Incurred losses
	Deferred policy		Unpaid losses		Unearned		Net		and settlement
	acquisition		and settlement		premiums,		premiums		expenses
(in thousands)	costs		expenses, gross		gross		earned		current year
Year ended December 31, 2018
Casualty segment	$	50,040	$	1,283,204	$	330,836	$	523,472	$	363,015
Property segment		14,090		134,822		93,032		149,261		94,635
Surety segment		20,804		43,322		72,637		118,633		20,493
RLI Insurance Group	$	84,934	$	1,461,348	$	496,505	$	791,366	$	478,143
Year ended December 31, 2017
Casualty segment	$	44,358	$	1,127,787	$	296,751	$	478,603	$	323,141
Property segment		13,029		107,304		84,010		138,346		97,161
Surety segment		20,329		36,412		70,688		120,988		20,150
RLI Insurance Group	$	77,716	$	1,271,503	$	451,449	$	737,937	$	440,452
Year ended December 31, 2016
Casualty segment	$	39,131	$	1,021,506	$	276,096	$	454,843	$	292,308
Property segment		13,115		76,989		84,425		152,167		76,143
Surety segment		20,901		40,842		73,256		121,598		23,321
RLI Insurance Group	$	73,147	$	1,139,337	$	433,777	$	728,608	$	391,772

NOTE 1: Investment income is not allocated to the segments, therefore net investment income has not been provided.

See the accompanying report of independent registered public accounting firm on page 108 of this report.

RLI CORP. AND SUBSIDIARIES

SCHEDULE III—SUPPLEMENTARY INSURANCE INFORMATION

(continued)

As of and for the years ended December 31, 2018, 2017 and 2016

	Incurred
	losses and
	settlement		Policy		Other		Net
	expenses		acquisition		operating		premiums
(in thousands)	prior year		costs		expenses		written
Year ended December 31, 2018
Casualty segment	$	(33,252)	$	151,007	$	31,562	$	547,177
Property segment		(10,813)		51,830		12,725		155,601
Surety segment		(5,885)		64,901		9,516		120,397
RLI Insurance Group	$	(49,950)	$	267,738	$	53,803	$	823,175
Year ended December 31, 2017
Casualty segment	$	(17,462)	$	136,135	$	32,885	$	494,649
Property segment		(12,134)		51,070		14,108		137,031
Surety segment		(9,272)		65,310		10,001		118,174
RLI Insurance Group	$	(38,868)	$	252,515	$	56,994	$	749,854
Year ended December 31, 2016
Casualty segment	$	(32,401)	$	128,566	$	30,040	$	470,082
Property segment		(4,793)		54,167		13,819		149,170
Surety segment		(4,800)		66,879		9,234		121,700
RLI Insurance Group	$	(41,994)	$	249,612	$	53,093	$	740,952

See the accompanying report of independent registered public accounting firm on page 108 of this report.

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SCHEDULE IV-REINSURANCE

12 Months Ended

Dec. 31, 2018

SCHEDULE IV-REINSURANCE

SCHEDULE IV-REINSURANCE

RLI CORP. AND SUBSIDIARIES

SCHEDULE IV—REINSURANCE

Years ended December 31, 2018, 2017 and 2016

									Percentage
			Ceded to		Assumed				of amount
	Direct		other		from other		Net		assumed
(in thousands)	amount		companies		companies		amount		to net
2018
Casualty segment	$	578,643	$	96,639	$	41,468	$	523,472	7.9	%
Property segment		193,855		44,634		40		149,261	0.0	%
Surety segment		123,736		5,521		418		118,633	0.4	%
RLI Insurance Group premiums earned	$	896,234	$	146,794	$	41,926	$	791,366	5.3	%
2017
Casualty segment	$	536,085	$	86,190	$	28,708	$	478,603	6.0	%
Property segment		172,668		37,607		3,285		138,346	2.4	%
Surety segment		126,365		5,905		528		120,988	0.4	%
RLI Insurance Group premiums earned	$	835,118	$	129,702	$	32,521	$	737,937	4.4	%
2016
Casualty segment	$	528,691	$	89,635	$	15,787	$	454,843	3.5	%
Property segment		179,460		38,353		11,060		152,167	7.3	%
Surety segment		127,143		6,584		1,039		121,598	0.9	%
RLI Insurance Group premiums earned	$	835,294	$	134,572	$	27,886	$	728,608	3.8	%

See the accompanying report of independent registered public accounting firm on page 108 of this report.

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SCHEDULE V-VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2018

SCHEDULE V-VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE V-VALUATION AND QUALIFYING ACCOUNTS

RLI CORP. AND SUBSIDIARIES

SCHEDULE V—VALUATION AND QUALIFYING ACCOUNTS

Years ended December 31, 2018, 2017 and 2016

	Balance		Amounts		Amounts		Balance
	at beginning		charged		recovered		at end of
(in thousands)	of period		to expense		(written off)		period
2018 Allowance for uncollectible reinsurance	$	25,911	$	—	$	—	$	25,911
2017 Allowance for uncollectible reinsurance	$	25,911	$	—	$	—	$	25,911
2016 Allowance for uncollectible reinsurance	$	25,911	$	—	$	—	$	25,911

See the accompanying report of independent registered public accounting firm on page 108 of this report.

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SCHEDULE VI-SUPPLEMENTARY INFORMATION CONCERNING PROPERTY-CASUALTY INSURANCE OPERATIONS

12 Months Ended

Dec. 31, 2018

SCHEDULE VI-SUPPLEMENTARY INFORMATION CONCERNING PROPERTY-CASUALTY INSURANCE OPERATIONS

SCHEDULE VI-SUPPLEMENTARY INFORMATION CONCERNING PROPERTY-CASUALTY INSURANCE OPERATIONS

RLI CORP. AND SUBSIDIARIES

SCHEDULE VI—SUPPLEMENTARY INFORMATION CONCERNING

PROPERTY-CASUALTY INSURANCE OPERATIONS

Years ended December 31, 2018, 2017 and 2016

(in thousands)	Deferred policy		Claims and		Unearned		Net		Net
Affiliation with	acquisition		claim adjustment		premiums,		premiums		investment
Registrant (1)	costs		expense reserves		gross		earned		income
2018	$	84,934	$	1,461,348	$	496,505	$	791,366	$	62,085
2017	$	77,716	$	1,271,503	$	451,449	$	737,937	$	54,876
2016	$	73,147	$	1,139,337	$	433,777	$	728,608	$	53,075

	Claims and claim adjustment
	expenses incurred related to:				Amortization		Paid claims and		Net
	Current		Prior		of deferred		claim adjustment		premiums
	year		year		acquisition costs		expenses		written
2018	$	478,143	$	(49,950)	$	267,738	$	301,356	$	823,175
2017	$	440,452	$	(38,868)	$	252,515	$	283,185	$	749,854
2016	$	391,772	$	(41,994)	$	249,612	$	304,606	$	740,952

(1) Consolidated property-casualty insurance operations.

See the accompanying report of independent registered public accounting firm on page 108 of this report.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Dec. 31, 2018

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

DESCRIPTION OF BUSINESS

A.DESCRIPTION OF BUSINESS

RLI Corp. (the “Company”) is an insurance holding company that was founded in 1965. On May 4, 2018, RLI Corp. changed its state of incorporation from the State of Illinois to the State of Delaware (the “Reincorporation”). The Reincorporation was effected by merging RLI Corp., an Illinois corporation (“RLI Illinois”) into RLI Corp., a Delaware corporation (“RLI Delaware”). The separate corporate existence of RLI Illinois ceased and RLI Delaware continues in existence as the surviving corporation and possesses all rights, privileges, powers and franchises of RLI Illinois. The Reincorporation did not result in any change in the name, business, management, fiscal year, location of the principal executive offices, assets or liabilities of the Company. Each outstanding share of RLI Illinois common stock, which had a par value of $1.00 per share, was automatically converted into one outstanding share of RLI Delaware common stock, with a par value of $0.01 per share. In order to reflect the new par value of common stock on the balance sheet, a $66.4 million reclassification from common stock to paid-in-capital was made. For more information on the Reincorporation, see RLI Corp.’s Form 8-K filed on May 7, 2018.

We underwrite select property and casualty insurance coverages through major subsidiaries collectively known as RLI Insurance Group. We conduct operations principally through three insurance companies. RLI Insurance Company (RLI Ins.), a subsidiary of RLI Corp. and our principal insurance subsidiary, writes multiple lines of insurance on an admitted basis in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands and Guam. Mt. Hawley Insurance Company (Mt. Hawley), a subsidiary of RLI Ins., writes surplus lines insurance on a non-admitted basis in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands and Guam. Contractors Bonding and Insurance Company (CBIC), a subsidiary of RLI Ins., writes multiple lines of insurance on an admitted basis in all 50 states and the District of Columbia.

PRINCIPLES OF CONSOLIDATION AND BASIS OF PRESENTATION

B.PRINCIPLES OF CONSOLIDATION AND BASIS OF PRESENTATION

The accompanying consolidated financial statements were prepared in conformity with generally accepted accounting principles in the United States of America (GAAP), which differ in some respects from those followed in reports to insurance regulatory authorities. The consolidated financial statements include the accounts of our holding company and our subsidiaries. All significant intercompany balances and transactions have been eliminated. Certain reclassifications were made to 2017 and 2016 to conform to the classifications used in the current year. The Company has evaluated subsequent events through the date these consolidated financial statements were issued. There were no subsequent events requiring adjustment to the financial statements or disclosure.

ADOPTED ACCOUNTING STANDARDS

C.ADOPTED ACCOUNTING STANDARDS

ASU 2014-09, Revenue from Contracts with Customers (Topic 606)

ASU 2014-09 was issued to clarify and remove inconsistencies within revenue recognition requirements. The core principle of the update is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, the transaction price for a contract is allocated among separately identifiable performance obligations and a portion of the transaction price is recognized as revenue when the associated performance obligation has been completed or transferred to the customer. All contracts and fulfillment activities within the scope of Topic 944, Financial Services – Insurance, investment income, investment-related gains and losses and equity in earnings of unconsolidated investees are outside the scope of this ASU.

We adopted ASU 2014-09 on January 1, 2018. However, nearly all (over 99 percent) of our consolidated revenue is scoped out and therefore exempt from the guidance contained within this ASU. For the remaining portion, the revenue recognition policy we utilize aligns with the new guidance and there were no changes to the way we recognize revenue. Although the recognition of earnings from equity method investees is out of scope from the update, the recognition of revenue by our equity method investees would be subject to the new guidance if the revenue streams are within this update’s scope. Any impact on revenues would affect the net income of each of the equity method investees, upon which we calculate our portion of earnings to recognize. Our equity method investees are private companies and this guidance becomes effective for private companies in periods beginning after December 15, 2018. As a result, their earnings and our portion of those earnings are not impacted in 2018. We expect that revenue generated by both of our equity method investees will either be outside the scope of this update or largely unaffected by the changes.

ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities

This ASU was issued to improve the recognition and measurement of financial instruments. The new guidance makes targeted improvements to GAAP as follows:

a.Requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net earnings,

b.Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment,

c.Eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet,

d.Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes,

e.Requires an entity to present separately in other comprehensive earnings the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments,

f.Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and

g.Clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets.

We adopted ASU 2016-01 on January 1, 2018. A cumulative-effect adjustment to the balance sheet was made as of the beginning of the year, which moved $142.2 million of net unrealized gains and losses on equity securities from accumulated other comprehensive earnings to retained earnings. During 2018, we recognized $98.7 million of unrealized losses on equity securities within net earnings and $20.7 million of income tax benefit. This compares to $24.0 million and $5.6 million of unrealized gains on equity securities, net of tax, that were recognized through other comprehensive earnings for the comparable periods in 2017 and 2016, respectively. The future impact to our net earnings will vary depending upon the level of volatility in the performance of the securities held in our equity portfolio and the overall market. There were no other material impacts to the financial statements.

ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments

ASU 2016-15 was issued to reduce the diversity in practice of how certain cash receipts and payments, for which previous guidance was silent, are classified in the statement of cash flows. The update addresses eight specific issues, including contingent consideration payments made after a business combination, distributions received from equity method investees and the classification of cash receipts and payments that have aspects of more than one class of cash flows. We adopted ASU 2016-15 on January 1, 2018. The adoption did not have a material impact on our statement of cash flows.

ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income

ASU 2018-02 was issued as a result of the enactment of the Tax Cuts and Jobs Act of 2017 (TCJA) on December 22, 2017. Accounting guidance required deferred tax items to be revalued based on the new tax laws (the most significant of which reduced the corporate tax rate to 21 percent from 35 percent) with the change included in income from continuing operations. Since other comprehensive income was not affected by the revaluation of the deferred tax items, the net accumulated other comprehensive income (AOCI) balance was reflective of the historic 35 percent tax rate instead of the newly enacted rate, a difference that is referred to as a stranded tax effect. This ASU allows for the option to reclassify the stranded tax effects resulting from the implementation of the TCJA out of AOCI and into retained earnings. ASU 2018-02 does not replace the guidance requiring changes from the enactment of other tax laws or rates to be included within income from continuing operations and is applicable only to changes from the TCJA.

We adopted ASU 2018-02 during the first quarter of 2018. A current period adjustment was made to the balance sheet, which moved $3.7 million of stranded tax effects on the unrealized balances of our fixed income securities and equity method investees from accumulated other comprehensive earnings to retained earnings. The entire unrealized balance on equity securities was reclassified from AOCI into retained earnings from the adoption of ASU 2016-01 on January 1, 2018 and was therefore unaffected by this ASU. As there was no impact to net earnings and the balance sheet effect is limited to a reclassification within the equity section, there was not a material impact on our financial statements.

PROSPECTIVE ACCOUNTING STANDARDS

D.PROSPECTIVE ACCOUNTING STANDARDS

ASU 2016-02, Leases (Topic 842)

ASU 2016-02 was issued to improve the financial reporting of leasing transactions. Under current guidance for lessees, leases are only included on the balance sheet if certain criteria, classifying the agreement as a capital lease, are met. This update will require the recognition of a right-of-use asset and a corresponding lease liability, discounted to the present value, for all leases that extend beyond 12 months. For operating leases, the asset and liability will be amortized over the lease term on a straight-line basis, with all cash flows included in the operating section of the statement of cash flows. For finance leases, interest on the lease liability will be recognized separately from the amortization of the right-of-use asset in the statement of comprehensive income and the repayment of the principal portion of the lease liability will be classified as a financing activity while the interest component will be included in the operating section of the statement of cash flows.

This ASU is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. ASU 2018-10, Codification Improvements to Topic 842, Leases was issued to clarify certain aspects of ASU 2016-02 and the two updates will be adopted concurrently. ASU 2016-02 requires leases to be recognized and measured at the beginning of the earliest period presented using a modified retrospective approach upon adoption. However, ASU 2018-11, Leases (Topic 842): Targeted Improvements provides an alternative transition method by which leases are recognized at the date of adoption and a cumulative-effect adjustment to the opening balance of retained earnings is recognized in the period of adoption. We plan to adopt using this alternative. It is expected that total assets and total liabilities will increase by approximately $25 million to $30 million upon implementation and the adoption of this update will not have a material impact on net earnings.

ASU 2016-13, Financial Instruments – Credit Losses (Topic 326)

ASU 2016-13 was issued to provide more decision-useful information about the expected credit losses on financial instruments. Current GAAP delays the recognition of credit losses until it is probable a loss has been incurred. The update will require a financial asset measured at amortized cost, including reinsurance balances recoverable, to be presented at the net amount expected to be collected by means of an allowance for credit losses that runs through net earnings. Credit losses relating to available-for-sale debt securities will also be recorded through an allowance for credit losses. However, the amendments would limit the amount of the allowance to the amount by which fair value is below amortized cost. The measurement of credit losses on available-for-sale securities is similar under current GAAP, but the update requires the use of the allowance account through which amounts can be reversed, rather than through an irreversible write-down.

This ASU is effective for annual and interim reporting periods beginning after December 15, 2019. Early adoption is permitted beginning after December 15, 2018. Upon adoption, the update will be applied using the modified-retrospective approach, by which a cumulative-effect adjustment will be made to retained earnings as of the beginning of the first reporting period presented. This update will have the most impact on our available-for-sale fixed income portfolio and reinsurance balances recoverable. However, as our fixed income portfolio is weighted towards higher rated bond (84 percent rated A or better at December 31, 2018) and we purchase reinsurance from financially strong reinsurers for which we already have an allowance for uncollectible reinsurance amounts, we do not expect that the effect of adoption will be material.

ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities

Under current practices, the amortization period for callable debt securities held at a premium is generally the contractual life of the instrument. However, if an entity has a large number of similar loans, it may consider estimates of future principal prepayments. For those who choose to not incorporate an estimate of future prepayments, ASU 2017-08 shortens the amortization period for premium on debt securities to the earliest call date, rather than the maturity date, to align the amortization method with how the securities are quoted, priced and traded. After the earliest call date, if the call option is not exercised, the entity shall reset the effective yield using the payment terms of the debt security. Any excess of the amortized cost basis over the amount payable will be amortized to the next call date or to maturity if there are no other call dates. The method of accounting for a discount does not change and will continue to be amortized over the life of the bond.

This ASU is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. The update will be applied using a modified retrospective basis through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. As we currently incorporate estimates of future principal prepayments when calculating the effective yield for bonds carrying a premium, we do not expect the adoption of this update to have a material impact on our financial statements.

ASU 2018-07, Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting

ASU 2018-07 was issued to simplify the accounting for share-based transactions by expanding the scope of Topic 718 from only being applicable to share-based payments to employees to also include share-based payment transactions for acquiring goods and services from nonemployees. As a result, nonemployee share-based transactions will be measured by estimating the fair value of the equity instruments at the grant date, taking into consideration the probability of satisfying performance conditions. This ASU is effective for annual and interim reporting periods beginning after December 15, 2018. Early adoption is permitted. Our long-term incentive plan limits the awards of share-based payments to employees and directors of the Company or any affiliate. The share-based compensation expense to nonemployee directors was $0.3 million in 2018. Costs associated with such payments are not expected to materially increase and we do not expect this update to have a material impact on our financial statements.

ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement

ASU 2018-13 modifies the disclosure requirements for assets and liabilities measured at fair value. The requirements to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timing of transfers between levels and the valuation processes for Level 3 fair value measurements have all been removed. However, the changes in unrealized gains and losses included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period must be disclosed along with the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements (or other quantitative information if it is more reasonable). Finally, for investments measured at net asset value, the requirements have been modified so that the timing of liquidation and the date when restrictions from redemption might lapse are only disclosed if the investee has communicated the timing to the entity or announced the timing publicly.

This ASU is effective for annual and interim reporting periods beginning after December 15, 2019. As the amendments are only disclosure-related and we do not currently have any assets or liabilities that are measured based on Level 3 inputs, our financial statements will not be materially impacted by this update.

ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract

ASU 2018-15 requires a customer in a cloud computing arrangement (i.e. hosting arrangement) that is a service contract to follow the internal-use software guidance to determine which implementation costs to capitalize as assets or expense as incurred. Relevant implementation costs in the development stage are capitalized, while costs incurred during the preliminary project and post-implementation stages are expensed as the activities are performed. Capitalized costs are expensed over the term of the hosting arrangement. This ASU is effective for annual and interim reporting periods beginning after December 15, 2019. Early adoption is permitted. This update can either be applied retrospectively or prospectively to all implementation costs incurred after the date of adoption. We have not yet completed the analysis of how adopting this ASU will affect our financial statements.

INVESTMENTS

E. INVESTMENTS:

Equity securities are carried at fair value with unrealized gains and losses recorded within net earnings in 2018. Prior to 2018, unrealized gains and losses on equity securities were recognized through other comprehensive earnings. We classify our investments in fixed income securities into one of three categories: trading, held-to-maturity or available-for-sale.

AVAILABLE-FOR-SALE SECURITIES

Debt securities not included as held-to-maturity or trading are classified as available-for-sale and reported at fair value. Unrealized gains and losses on these securities are excluded from net earnings but are recorded as a separate component of comprehensive earnings and shareholders’ equity, net of deferred income taxes. All of our debt securities are classified as available-for-sale.

HELD-TO-MATURITY SECURITIES

Debt securities that we have the positive intent and ability to hold to maturity are classified as held-to-maturity and carried at amortized cost. Except for declines that are other-than-temporary, changes in the fair value of these securities are not reflected in the financial statements. We do not hold any debt security classified as held-to-maturity.

TRADING SECURITIES

Debt securities purchased for short-term resale are classified as trading securities. These securities are reported at fair value with unrealized gains and losses included in earnings. We do not hold any debt securities classified as trading.

OTHER THAN TEMPORARY IMPAIRMENT

We regularly evaluate our fixed income securities using quantitative and qualitative criteria to determine impairment losses for other-than-temporary declines in the fair value of the investments. The following are the key factors for determining if a security is other-than-temporarily impaired:

· The length of time and the extent to which the fair value has been less than amortized cost,

· The probability of significant adverse changes to the cash flows,

· The occurrence of a discrete credit event resulting in the issuer defaulting on a material obligation, the issuer seeking protection from creditors under the bankruptcy laws, the issuer proposing a voluntary reorganization under which creditors are asked to exchange their claims for cash or securities having a fair value substantially lower than par value of their claims or

· The probability that we will recover the entire amortized cost basis of our fixed income securities prior to maturity.

Quantitative criteria considered during this process include, but are not limited to: the degree and duration of current fair value as compared to the amortized cost of the security, degree and duration of the security’s fair value being below cost and whether the issuer is in compliance with terms and covenants of the security. Qualitative criteria include the credit quality, current economic conditions, the anticipated speed of cost recovery, the financial health of and specific prospects for the issuer, as well as our absence of intent to sell or requirement to sell fixed income securities prior to recovery. In addition, we consider price declines in our other-than-temporary impairment (OTTI) analysis when they provide evidence of declining credit quality, and we distinguish between price changes caused by credit deterioration, as opposed to rising interest rates. See note 2 for further discussion of OTTI.

Interest on fixed maturities and short-term investments is credited to earnings on an accrual basis. Premiums and discounts are amortized or accreted over the lives of the related fixed maturities. Dividends on equity securities are credited to earnings on the ex-dividend date. Realized gains and losses on disposition of investments are based on specific identification of the investments sold on the settlement date.

CASH AND SHORT-TERM INVESTMENTS

F.CASH, SHORT-TERM INVESTMENTS AND OTHER INVESTED ASSETS

Cash consists of uninvested balances in bank accounts. Short-term investments consist of investments with original maturities of 90 days or less, primarily AAA-rated prime and government money market funds. Short-term investments are carried at cost. We have not experienced losses on these instruments. Other invested assets include investments in low income housing tax credit partnerships (LIHTC), membership in the Federal Home Loan Bank of Chicago (FHLBC) and investments in private funds. Our LIHTC investments are carried at amortized cost, and our investment in FHLBC stock is carried at cost. Due to the nature of cash, short-term investments, the LIHTC and our membership in the FHLBC, their carrying amounts approximate fair value. The private funds are carried at fair value, using each investment’s net asset value.

REINSURANCE

G.REINSURANCE

Ceded unearned premiums and reinsurance balances recoverable on paid and unpaid losses and settlement expenses are reported separately as assets, instead of being netted with the related liabilities, since reinsurance does not relieve the Company of our legal liability to our policyholders.

We continuously monitor the financial condition of our reinsurers. As part of our monitoring efforts, we review their annual financial statements, quarterly disclosures and Securities and Exchange Commission (SEC) filings for reinsurers that are publicly traded. We also review insurance industry developments that may impact the financial condition of our reinsurers. We analyze the credit risk associated with our reinsurance balances recoverable by monitoring the A.M. Best and Standard & Poor’s (S&P) ratings of our reinsurers. In addition, we subject our reinsurance recoverables to detailed recoverable tests, including one based on average default by S&P rating. Based upon our review and testing, our policy is to charge to earnings, in the form of an allowance, an estimate of unrecoverable amounts from reinsurers. This allowance is reviewed on an ongoing basis to ensure that the amount makes a reasonable provision for reinsurance balances that we may be unable to recover.

POLICY ACQUISITION COSTS

H.POLICY ACQUISITION COSTS

We defer incremental direct costs that relate to the successful acquisition of new or renewal insurance contracts, including commissions and premium taxes. Acquisition-related costs may be deemed ineligible for deferral when they are based on contingent or performance criteria beyond the basic acquisition of the insurance contract or when efforts to obtain or renew the insurance contract are unsuccessful. All eligible costs are capitalized and charged to expense in proportion to premium revenue recognized. The method followed in computing deferred policy acquisition costs limits the amount of such deferred costs to their estimated realizable value. This would also give effect to the premiums to be earned and anticipated losses and settlement expenses, as well as certain other costs expected to be incurred as the premiums are earned. Judgments as to the ultimate recoverability of such deferred costs are reviewed on a segment basis and are highly dependent upon estimated future loss costs associated with the premiums written. This deferral methodology applies to both gross and ceded premiums and acquisition costs.

PROPERTY AND EQUIPMENT

I.PROPERTY AND EQUIPMENT

Property and equipment are presented at cost less accumulated depreciation and are depreciated on a straight-line basis for financial statement purposes over periods ranging from 3 to 10 years for equipment and up to 30 years for buildings and improvements.

INVESTMENT IN UNCONSOLIDATED INVESTEES

J.INVESTMENT IN UNCONSOLIDATED INVESTEES

We maintain a 40 percent interest in the equity and earnings of Maui Jim, Inc. (Maui Jim), a manufacturer of high-quality sunglasses, which is accounted for under the equity method. We also maintain a similar minority representation on their board of directors. Maui Jim’s chief executive officer owns a controlling majority of the outstanding shares of Maui Jim. We carry this investment at the holding company level as it is not core to our insurance operations. Our investment in Maui Jim was $79.5 million in 2018 and $77.7 million in 2017. In 2018, we recorded $12.5 million in investee earnings for Maui Jim, compared to $14.4 million in 2017 and $9.7 million in 2016. Maui Jim recorded net income of $30.3 million in 2018, $34.4 million in 2017 and $26.9 million in 2016. Additional summarized financial information for Maui Jim for 2018 and 2017 is outlined in the following table:

(in millions)	2018		2017
Total assets	$	265.6	$	259.4
Total liabilities		90.4		88.0
Total equity		175.2		171.4

Approximately $68.9 million of undistributed earnings from Maui Jim are included in our retained earnings as of December 31, 2018. We received dividends of $9.9 million from Maui Jim in 2018 and 2016. No dividends were received in 2017.

As of December 31, 2018, we had a 23 percent interest in the equity and earnings of Prime Holdings Insurance Services, Inc. (Prime), which is accounted for under the equity method. Prime writes business through two Illinois domiciled insurance carriers, Prime Insurance Company, an excess and surplus lines company, and Prime Property and Casualty Insurance Inc., an admitted insurance company. Our investment in Prime was $15.4 million at December 31, 2018 and $12.4 million at December 31, 2017. In 2018, we recorded $3.6 million in investee earnings for Prime, compared to $2.8 million in 2017 and $1.1 million in 2016. Additionally, we maintain a 25 percent quota share reinsurance treaty with Prime, which contributed $41.1 million of gross premiums written and $34.2 million of net premiums earned during 2018, compared to $29.6 million of gross premiums written and $21.0 million of net premiums earned during 2017 and $13.4 million of gross premiums written and $11.4 million of net premiums earned during 2016.

We perform annual impairment reviews of our investments in unconsolidated investees, which take into consideration current valuation and operating results. Based upon the most recent reviews, the assets were not impaired.

INTANGIBLE ASSETS

K.INTANGIBLE ASSETS

Goodwill and intangibles totaled $54.5 million and $59.3 million at December 31, 2018 and 2017, respectively, as detailed in the following table.

Goodwill and Intangible Assets
(in thousands)		2018		2017
Goodwill
Energy surety	$	25,706	$	25,706
Miscellaneous and contract surety		15,110		15,110
Small Commercial		5,246		5,246
Medical professional liability *		-		3,595
Total goodwill	$	46,062	$	49,657
Intangibles
State insurance licenses	$	7,500	$	7,500
Definite-lived intangibles, net of accumulated amortization of $3,062 at 12/31/18 and $5,678 at 12/31/17		972		2,145
Total intangibles	$	8,472	$	9,645
Total goodwill and intangibles	$	54,534	$	59,302

*  The medical professional liability goodwill balance reflects a cumulative non-cash impairment charge of $12.4 million and $8.8 million as of December 31, 2018 and 2017, respectively.

As the amortization of goodwill and indefinite-lived intangible assets is not permitted, the assets are tested for impairment on an annual basis, or earlier if there is reason to suspect that their values may have been diminished or impaired. Annual impairment testing was performed on each of our goodwill and indefinite-lived intangible assets during 2018. Based upon these reviews, our energy surety goodwill, miscellaneous and contract surety goodwill, small commercial goodwill and state insurance license indefinite-lived intangible asset were not impaired. In addition, as of December 31, 2018, there were no triggering events on the above-mentioned goodwill and intangible assets that would suggest an updated review was necessary.

As previously disclosed, adverse loss experience triggered the need to test the medical professional liability reporting unit during the first quarter of 2018 and the second quarters of 2017 and 2016. The testing resulted in a $4.4 million non-cash impairment charge on goodwill and intangible assets in 2018, a $3.4 million non-cash impairment charge on goodwill and intangible assets in 2017 and a $7.2 million non-cash impairment charge on goodwill in 2016. In each instance, a fair value for the medical professional liability reporting unit’s agency relationships, carried as a definite-lived intangible asset, was determined by using a discounted cash flow valuation. In 2018, the carrying value exceeded the fair value, resulting in a $0.8 million non-cash impairment charge. In 2017, the resulting non-cash impairment charge on definite-lived intangibles was $1.8 million. A fair value for the medical professional liability reporting unit’s goodwill was determined by using a weighted average of a market approach and discounted cash flow valuation. The carrying value exceeded the fair value in each year, resulting in a $3.6 million non-cash impairment charge in 2018, a $1.6 million non-cash impairment charge during 2017 and a $7.2 million non-cash impairment charge in 2016. Subsequent to the 2018 impairment, the medical professional liability reporting unit had no remaining goodwill or intangible assets. All impairment charges were recorded as net realized losses in the respective period’s consolidated statement of earnings.

The definite-lived intangible assets are amortized against future operating results based on their estimated useful lives. Amortization of intangible assets was $0.4 million, $0.7 million and $0.9 million for 2018, 2017 and 2016, respectively. We anticipate we will recognize amortization expense of $0.4 million in 2019 and 2020 and $0.1 million in 2021.

UNPAID LOSSES AND SETTLEMENT EXPENSES

L.UNPAID LOSSES AND SETTLEMENT EXPENSES

The liability for unpaid losses and settlement expenses represents estimates of amounts needed to pay reported and unreported claims and related expenses. The estimates are based on certain actuarial and other assumptions related to the ultimate cost to settle such claims. Such assumptions are subject to occasional changes due to evolving economic, social and political conditions. All estimates are periodically reviewed and, as experience develops and new information becomes known, the reserves are adjusted as necessary. Such adjustments are reflected in the results of operations in the period in which they are determined. Due to the inherent uncertainty in estimating reserves for losses and settlement expenses, there can be no assurance that the ultimate liability will not exceed recorded amounts. If actual liabilities do exceed recorded amounts, there will be an adverse effect. Furthermore, we may determine that recorded reserves are more than adequate to cover expected losses, which would lead to a reduction in our reserves.

INSURANCE REVENUE RECOGNITION

M.INSURANCE REVENUE RECOGNITION

Insurance premiums are recognized ratably over the term of the contracts, net of ceded reinsurance. Unearned premiums are calculated on a monthly pro rata basis.

INCOME TAXES

N.INCOME TAXES

We file a consolidated federal income tax return. Federal income taxes are accounted for using the asset and liability method under which deferred income taxes are recognized for the tax consequences of temporary differences by applying enacted statutory tax rates applicable to future years to differences between the financial statement carrying amounts and the tax bases of existing assets and liabilities, operating losses and tax credit carry forwards. The effect on deferred taxes for a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance if it is more likely than not that all or some of the deferred tax assets will not be realized.

We consider uncertainties in income taxes and recognize those in our financial statements as required. As it relates to uncertainties in income taxes, our unrecognized tax benefits, including interest and penalty accruals, are not considered material to the consolidated financial statements. Also, no tax uncertainties are expected to result in significant increases or decreases to unrecognized tax benefits within the next 12-month period. Penalties and interest related to income tax uncertainties, should they occur, would be included in income tax expense in the period in which they are incurred.

As an insurance company, we are subject to minimal state income tax liabilities. On a state basis, since the majority of our income is from insurance operations, we pay premium taxes which are calculated as a percentage of gross premiums written in lieu of state income taxes. Premium taxes are a component of policy acquisition costs.

EARNINGS PER SHARE

O.EARNINGS PER SHARE

Basic earnings per share (EPS) is computed by dividing income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the dilution that could occur if securities or other contracts to issue common stock or common stock equivalents were exercised or converted into common stock. When inclusion of these items increases the earnings per share or reduces the loss per share, the effect on earnings is anti-dilutive. Under these circumstances, the diluted net earnings or net loss per share is computed excluding these items.

The following represents a reconciliation of the numerator and denominator of the basic and diluted EPS computations contained in the consolidated financial statements:

			Weighted Average
	Income		Shares	Per Share
(in thousands, except per share data)	(Numerator)		(Denominator)	Amount
For the year ended December 31, 2018
Basic EPS
Income available to common shareholders	$	64,179	44,358	$	1.45
Stock options		—	477
Diluted EPS
Income available to common shareholders and assumed conversions	$	64,179	44,835	$	1.43
For the year ended December 31, 2017
Basic EPS
Income available to common shareholders	$	105,028	44,033	$	2.39
Stock options		—	467
Diluted EPS
Income available to common shareholders and assumed conversions	$	105,028	44,500	$	2.36
For the year ended December 31, 2016
Basic EPS
Income available to common shareholders	$	114,920	43,772	$	2.63
Stock options		—	660
Diluted EPS
Income available to common shareholders and assumed conversions	$	114,920	44,432	$	2.59

COMPREHENSIVE EARNINGS

P.COMPREHENSIVE EARNINGS

Our comprehensive earnings include net earnings plus after-tax unrealized gains and losses on our available-for-sale fixed income portfolio in 2018. In 2017 and 2016, after-tax unrealized gains and losses on our equity portfolio were also included. With the adoption of ASU 2016-01 on January 1, 2018, we began recognizing unrealized gains and losses on the equity portfolio through net income. See note 1.C for more information. In reporting the components of comprehensive earnings, we used the federal statutory tax rate of 21 percent in 2018 and 35 percent in 2017 and 2016. Other comprehensive income (loss), as shown in the consolidated statements of earnings and comprehensive earnings, is net of tax expense (benefit) of $(9.0) million, $19.0 million and $(0.6) million for 2018, 2017 and 2016, respectively.

The following table illustrates the changes in the balance of each component of accumulated other comprehensive earnings for each period presented in the consolidated financial statements. The 2016 and 2017 activity and balances include the net unrealized gain and loss activity on both fixed income and equity securities, while the 2018 activity and ending balance reflect only the net unrealized gain and loss activity on fixed income securities due to the aforementioned adoption of ASU 2016-01.

Unrealized Gains/Losses on Available-for-Sale Securities	For the Year Ended December 31,
(in thousands)	2018		2017		2016
Beginning balance	$	157,919	$	122,610	$	123,774
Cumulative effect adjustment of ASU 2016-01		(142,219)		—		—
Adjusted beginning balance	$	15,700	$	122,610	$	123,774
Other comprehensive earnings before reclassifications		(35,763)		40,887		26,740
Amounts reclassified from accumulated other comprehensive earnings		1,766		(5,578)		(27,904)
Net current-period other comprehensive earnings (loss)	$	(33,997)	$	35,309	$	(1,164)
Reclassification of stranded tax effect per ASU 2018-02 (see note 1.C)		3,725		—		—
Ending balance	$	(14,572)	$	157,919	$	122,610

The sale or other-than-temporary impairment of an available-for-sale security results in amounts being reclassified from accumulated other comprehensive earnings to current period net earnings. The effects of reclassifications out of accumulated other comprehensive earnings by the respective line items of net earnings are presented in the following table. As previously mentioned, 2018 activity is reflective of activity on fixed income securities classified as available-for-sale, while 2017 and 2016 also includes activity from the equity portfolio.

Amount Reclassified from Accumulated Other Comprehensive Earnings
(in thousands)
Component of Accumulated	For the Year Ended December 31,						Affected line item in the
Other Comprehensive Earnings	2018		2017		2016		Statement of Earnings
Unrealized gains and losses on available-for-sale securities	$	(2,018)	$	11,141	$	43,024	Netrealized investment gains
		(217)		(2,559)		(95)	Other-than-temporary impairment (OTTI) losses on investments
	$	(2,235)	$	8,582	$	42,929	Earnings before income taxes
		469		(3,004)		(15,025)	Income tax benefit (expense)
	$	(1,766)	$	5,578	$	27,904	Net earnings

FAIR VALUE DISCLOSURES

Q.FAIR VALUE DISCLOSURES

Fair value is defined as the price in the principal market that would be received for an asset to facilitate an orderly transaction between market participants on the measurement date. We determined the fair value of certain financial instruments based on their underlying characteristics and relevant transactions in the marketplace. We maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

The following are the levels of the fair value hierarchy and a brief description of the type of valuation inputs that are used to establish each level. Financial assets are classified based upon the lowest level of significant input that is used to determine fair value.

· Pricing Level 1 is applied to valuations based on readily available, unadjusted quoted prices in active markets for identical assets.

· Pricing Level 2 is applied to valuations based upon quoted prices for similar assets in active markets, quoted prices for identical or similar assets in inactive markets; or valuations based on models where the significant inputs are observable (e.g. interest rates, yield curves, prepayment speeds, default rates, loss severities) or can be corroborated by observable market data.

· Pricing Level 3 is applied to valuations that are derived from techniques in which one or more of the significant inputs are unobservable.

As a part of management’s process to determine fair value, we utilize widely recognized, third-party pricing sources to determine our fair values. We have obtained an understanding of the third-party pricing sources’ valuation methodologies and inputs. The following is a description of the valuation techniques used for financial assets that are measured at fair value, including the general classification of such assets pursuant to the fair value hierarchy.

Corporate, Agencies, Government and Municipal Bonds: The pricing vendor employs a multi-dimensional model which uses standard inputs including (listed in approximate order of priority for use) benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, market bids/offers and other reference data. The pricing vendor also monitors market indicators, as well as industry and economic events. All bonds valued using these techniques are classified as Level 2. All Corporate, Agencies, Government and Municipal securities are deemed Level 2.

Mortgage-backed Securities (MBS)/Collateralized Mortgage Obligations (CMO) and Asset-backed Securities (ABS): The pricing vendor evaluation methodology includes principally interest rate movements and new issue data. Evaluation of the tranches (non-volatile, volatile or credit sensitivity) is based on the pricing vendors’ interpretation of accepted modeling and pricing conventions. This information is then used to determine the cash flows for each tranche, benchmark yields, pre-payment assumptions and to incorporate collateral performance. To evaluate CMO volatility, an option adjusted spread model is used in combination with models that simulate interest rate paths to determine market price information. This process allows the pricing vendor to obtain evaluations of a broad universe of securities in a way that reflects changes in yield curve, index rates, implied volatility, mortgage rates and recent trade activity. MBS/CMO and ABS with corroborated, observable inputs are classified as Level 2. All of our MBS/CMO and ABS are deemed Level 2.

For all of our fixed income securities classified as Level 2, as described above, we periodically conduct a review to assess the reasonableness of the fair values provided by our pricing services. Our review consists of a two-pronged approach. First, we compare prices provided by our pricing services to those provided by an additional source. In some cases, we obtain prices from securities brokers and compare them to the prices provided by our pricing services. In our comparisons, if discrepancies are found, we compare our prices to actual reported trade data for like securities. No changes to the fair values supplied by our pricing services have occurred as a result of our reviews. Based on these assessments, we have determined that the fair values of our Level 2 securities provided by our pricing services are reasonable.

Common Stock: All but one of our common stock holdings are traded on an exchange. Exchange traded equities have readily observable price levels and are classified as Level 1 (fair value based on quoted market prices). Pricing for the equity security not traded on an exchange is provided by a third-party pricing source and is classified as Level 2.

Due to the relatively short-term nature of cash, short-term investments, accounts receivable and accounts payable, their carrying amounts are reasonable estimates of fair value. Our investments in private funds, classified as other invested assets, are measured using the investments’ net asset value per share and are not categorized within the fair value hierarchy. The fair value of our long-term debt is discussed further in note 4.

STOCK-BASED COMPENSATION

R.STOCK-BASED COMPENSATION

We expense the estimated fair value of employee stock options and similar awards. We measure compensation cost for awards of equity instruments to employees based on the grant-date fair value of those awards and recognize compensation expense over the service period that the awards are expected to vest.

The tax effects related to share-based payments were made through net earnings in 2018 and 2017. In 2016, the tax effects of share-based compensation were recognized in additional paid-in capital under the alternative transition method. The alternative transition method used simplified methods to determine the impact on the additional paid-in capital pool and consolidated statements of cash flows.

See note 8 for further discussion and related disclosures regarding stock options.

RISKS AND UNCERTAINTIES

S.RISKS AND UNCERTAINTIES:

Certain risks and uncertainties are inherent to our day-to-day operations and to the process of preparing our consolidated financial statements. The more significant risks and uncertainties, as well as our attempt to mitigate, quantify and minimize such risks, are presented below and throughout the notes to the consolidated financial statements.

Insurance Risks

We compete with a large number of other companies in our selected lines of business. During periods of intense competition for premium, we are vulnerable to the actions of other companies who may seek to write business without the appropriate regard for risk and profitability. The insurance industry is currently operating under highly competitive conditions and, as a result, margins in the industry are under pressure. During these times, it is very difficult to grow or maintain premium volume without sacrificing underwriting discipline and income. Our profitability can be affected significantly by the ability of our underwriters to accurately select and price risk and our claim personnel to appropriately deliver fair outcomes. We attempt to mitigate this risk by incentivizing our underwriters to maximize underwriting profit and remain disciplined in pricing and selecting risks. If we are unable to compete effectively in the markets in which we operate or expand our operations into new markets, our underwriting revenues may decline, as well as overall business results.

Our loss reserves are based on estimates and may be inadequate to cover our actual insured losses, which would negatively impact our profitability. As of December 31, 2018 we had $1.5 billion of gross loss and LAE reserves. Significant periods of time often elapse between the occurrence of an insured loss, the reporting of the loss to the Company and our payment of that loss. As part of the reserving process, we review historical data and consider the impact of various factors such as trends in claim frequency and severity, emerging economic and social trends, inflation and changes in the regulatory and litigation environments. If the actual amount of insured losses is greater than the amount we have reserved for these losses, our profitability would suffer.

Catastrophe Exposures

Our insurance coverages include exposure to catastrophic events. We monitor all catastrophe exposures by quantifying our exposed policy limits in each region and by using computer-assisted modeling techniques. Additionally, we limit our risk to such catastrophes through restraining the total policy limits written in each region and by purchasing reinsurance. Our major catastrophe exposure is to losses caused by earthquakes, primarily on the West Coast. In 2018, we had reinsurance protection of $300 million in excess of $25 million first-dollar retention for earthquakes in California and $325 million in excess of a $25 million first-dollar retention for earthquakes outside of California. These amounts are subject to certain co-participations by the Company on losses in excess of the $25 million retentions. Our second largest catastrophe exposure is to losses caused by wind storms to commercial properties throughout the Gulf and East Coasts, as well as to homes we insure in Hawaii. In 2018, these coverages were supported by $225 million in excess of a $25 million first-dollar retention in traditional catastrophe reinsurance protection, subject to certain co-participations by the Company in the excess layers. In addition, we have incidental exposure to international catastrophic events.

Our catastrophe reinsurance treaty renewed on January 1, 2019. We purchased reinsurance protection of $400 million in excess of $25 million first-dollar retention for earthquakes in California and $425 million in excess of a $25 million first-dollar retention for earthquakes outside of California. For other CAT events, such as hurricanes, we purchased reinsurance protection of $275 million in excess of a $25 million first dollar retention. These amounts are subject to certain co-participations by the Company on losses in excess of the $25 million retentions. We actively manage our catastrophe program to keep our net retention in line with risk tolerances and to optimize the risk/return trade off.

Environmental Exposures

We are subject to environmental claims and exposures primarily through our commercial excess, general liability and discontinued assumed casualty reinsurance lines of business. Although exposure to environmental claims exists in these lines of business, we seek to mitigate or control the extent of this exposure on the vast majority of this business through the following methods: (1) our policies include pollution exclusions that have been continually updated to further strengthen them, (2) our policies primarily cover moderate hazard risks and (3) we began writing this business after the insurance industry became aware of the potential pollution liability exposure and implemented changes to limit exposure to this hazard.

We offer coverage for low to moderate environmental liability exposures for small contractors and asbestos and mold remediation specialists. We also provide limited coverage for individually underwritten underground storage tanks. The overall exposure is mitigated by focusing on smaller risks with low to moderate exposures. Risks that have large-scale exposures are avoided including petrochemical, chemical, mining, manufacturers and other risks that might be exposed to superfund sites. This business is covered under our casualty ceded reinsurance treaties.

We made loss and settlement expense payments on environmental liability claims and have loss and settlement expense reserves for others. We include this historical environmental loss experience with the remaining loss experience in the applicable line of business to project ultimate incurred losses and settlement expenses as well as related incurred but not reported (IBNR) loss and settlement expense reserves.

Although historical experience on environmental claims may not accurately reflect future environmental exposures, we used this experience to record loss and settlement expense reserves in the exposed lines of business. See further discussion of environmental exposures in note 6.

Reinsurance

Reinsurance does not discharge the Company from our primary liability to policyholders, and to the extent that a reinsurer is unable to meet its obligations, we would be liable. We continuously monitor the financial condition of prospective and existing reinsurers. As a result, we purchase reinsurance from a number of financially strong reinsurers. We provide an allowance for reinsurance balances deemed uncollectible. See further discussion of reinsurance exposures in note 5.

Investment Risk

Our investment portfolio is subject to market, credit and interest rate risks. The equity portfolio will fluctuate with movements in the overall stock market. While the equity portfolio has been constructed to have lower downside risk than the market, the portfolio is positively correlated with movements in domestic stocks. The bond portfolio is affected by interest rate changes and movement in credit spreads. We attempt to mitigate our interest rate and credit risks by constructing a well-diversified portfolio with high-quality securities with varied maturities. Downturns in the financial markets could have a negative effect on our portfolio. However, we attempt to manage this risk through asset allocation, duration and security selection.

Liquidity Risk

Liquidity is essential to our business and a key component of our concept of asset-liability matching. Our liquidity may be impaired by an inability to collect premium receivable or reinsurance recoverable balances in a timely manner, an inability to sell assets or redeem our investments, an inability to access funds from our insurance subsidiaries, unforeseen outflows of cash or large claim payments or an inability to access debt or equity capital markets. This situation may arise due to circumstances that we may be unable to control, such as a general market disruption, an operational problem that affects third parties or the Company, or even by the perception among market participants that we, or other market participants, are experiencing greater liquidity risk.

Our credit ratings are important to our liquidity. A reduction in our credit ratings could adversely affect our liquidity and competitive position by increasing our borrowing costs or limiting our access to the capital markets.

Financial Statements

The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities and reported amounts of revenues and expenses. The most significant of these amounts is the liability for unpaid losses and settlement expenses. Other estimates include investment valuation and OTTIs, the collectability of reinsurance balances, recoverability of deferred tax assets and deferred policy acquisition costs. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. Although recorded estimates are supported by actuarial computations and other supportive data, the estimates are ultimately based on our expectations of future events. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the consolidated financial statements in future periods.

External Factors

Our insurance subsidiaries are highly regulated by the state in which they are incorporated and by the states in which they do business. Such regulations, among other things, limit the amount of dividends, impose restrictions on the amount and types of investments and regulate rates insurers may charge for various coverages. We are also subject to insolvency and guaranty fund assessments for various programs designed to ensure policyholder indemnification. We generally accrue an assessment during the period in which it becomes probable that a liability has been incurred from an insolvency and the amount of the related assessment can be reasonably estimated.

The National Association of Insurance Commissioners (NAIC) has developed Property/Casualty Risk-Based Capital (RBC) standards that relate an insurer’s reported statutory surplus to the risks inherent in its overall operations. The RBC formula uses the statutory annual statement to calculate the minimum indicated capital level to support investment and underwriting risk. The NAIC model law calls for various levels of regulatory action based on the magnitude of an indicated RBC capital deficiency, if any. We regularly monitor our subsidiaries’ internal capital requirements and the NAIC’s RBC developments. As of December 31, 2018, we determined that our capital levels are well in excess of the minimum capital requirements for all RBC action levels and that our capital levels are sufficient to support the level of risk inherent in our operations. See note 9 for further discussion of statutory information and related insurance regulatory restrictions.

In addition, ratings are a critical factor in establishing the competitive position of insurance companies. Our insurance companies are rated by A.M. Best, S&P and Moody’s. Their ratings reflect their opinions of an insurance company’s and an insurance holding company’s financial strength, operating performance, strategic position and ability to meet its obligations to policyholders.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2018

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Schedule of summarized financial information of Maui Jim

(in millions)	2018		2017
Total assets	$	265.6	$	259.4
Total liabilities		90.4		88.0
Total equity		175.2		171.4

Schedule of goodwill and intangible assets

Goodwill and Intangible Assets
(in thousands)		2018		2017
Goodwill
Energy surety	$	25,706	$	25,706
Miscellaneous and contract surety		15,110		15,110
Small Commercial		5,246		5,246
Medical professional liability *		-		3,595
Total goodwill	$	46,062	$	49,657
Intangibles
State insurance licenses	$	7,500	$	7,500
Definite-lived intangibles, net of accumulated amortization of $3,062 at 12/31/18 and $5,678 at 12/31/17		972		2,145
Total intangibles	$	8,472	$	9,645
Total goodwill and intangibles	$	54,534	$	59,302

*  The medical professional liability goodwill balance reflects a cumulative non-cash impairment charge of $12.4 million and $8.8 million as of December 31, 2018 and 2017, respectively.

Schedule of reconciliation of numerator and denominator of the basic and diluted earnings per share computations

			Weighted Average
	Income		Shares	Per Share
(in thousands, except per share data)	(Numerator)		(Denominator)	Amount
For the year ended December 31, 2018
Basic EPS
Income available to common shareholders	$	64,179	44,358	$	1.45
Stock options		—	477
Diluted EPS
Income available to common shareholders and assumed conversions	$	64,179	44,835	$	1.43
For the year ended December 31, 2017
Basic EPS
Income available to common shareholders	$	105,028	44,033	$	2.39
Stock options		—	467
Diluted EPS
Income available to common shareholders and assumed conversions	$	105,028	44,500	$	2.36
For the year ended December 31, 2016
Basic EPS
Income available to common shareholders	$	114,920	43,772	$	2.63
Stock options		—	660
Diluted EPS
Income available to common shareholders and assumed conversions	$	114,920	44,432	$	2.59

Schedule of changes in the balance of each component of accumulated other comprehensive earnings

Unrealized Gains/Losses on Available-for-Sale Securities	For the Year Ended December 31,
(in thousands)	2018		2017		2016
Beginning balance	$	157,919	$	122,610	$	123,774
Cumulative effect adjustment of ASU 2016-01		(142,219)		—		—
Adjusted beginning balance	$	15,700	$	122,610	$	123,774
Other comprehensive earnings before reclassifications		(35,763)		40,887		26,740
Amounts reclassified from accumulated other comprehensive earnings		1,766		(5,578)		(27,904)
Net current-period other comprehensive earnings (loss)	$	(33,997)	$	35,309	$	(1,164)
Reclassification of stranded tax effect per ASU 2018-02 (see note 1.C)		3,725		—		—
Ending balance	$	(14,572)	$	157,919	$	122,610

Schedule of effects of reclassifications out of accumulated other comprehensive earnings

Amount Reclassified from Accumulated Other Comprehensive Earnings
(in thousands)
Component of Accumulated	For the Year Ended December 31,						Affected line item in the
Other Comprehensive Earnings	2018		2017		2016		Statement of Earnings
Unrealized gains and losses on available-for-sale securities	$	(2,018)	$	11,141	$	43,024	Netrealized investment gains
		(217)		(2,559)		(95)	Other-than-temporary impairment (OTTI) losses on investments
	$	(2,235)	$	8,582	$	42,929	Earnings before income taxes
		469		(3,004)		(15,025)	Income tax benefit (expense)
	$	(1,766)	$	5,578	$	27,904	Net earnings

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INVESTMENTS (Tables)

12 Months Ended

Dec. 31, 2018

INVESTMENTS

Schedule of net investment income

NET INVESTMENT INCOME
(in thousands)	2018		2017		2016
Interest on fixed income securities	$	54,491	$	48,343	$	46,834
Dividends on equity securities		9,814		10,506		10,929
Interest on cash, short-term investments and other invested assets		2,309		945		120
Gross investment income	$	66,614	$	59,794	$	57,883
Less investment expenses		(4,529)		(4,918)		(4,808)
Net investment income	$	62,085	$	54,876	$	53,075

Schedule of pretax net realized investment gains (losses) and net changes in unrealized gains (losses) on investments

REALIZED/UNREALIZED GAINS
(in thousands)	2018		2017		2016
Net realized gains (losses):
Fixed income:
Available-for-sale	$	(2,018)	$	859	$	4,314
Available-for-sale OTTI		(217)		(2,559)		(95)
Equity securities		69,868		10,282		38,709
Other		(4,226)		(4,171)		(8,283)
Total	$	63,407	$	4,411	$	34,645
Net changes in unrealized gains (losses) on investments:
Fixed income:
Available-for-sale	$	(41,778)	$	16,846	$	(10,972)
Equity securities		(98,380)		36,844		8,659
Other invested assets		(355)		29		—
Investment in unconsolidated investees		(1,257)		604		522
Total	$	(141,770)	$	54,323	$	(1,791)
Net realized gains (losses) and changes in unrealized gains (losses) on investments	$	(78,363)	$	58,734	$	32,854

Schedule of disposition of fixed maturities and equities

							Net
SALES	Proceeds		Gross Realized				Realized
(in thousands)	From Sales		Gains		Losses		Gain (Loss)
2018
Available-for-sale	$	394,318	$	3,131	$	(5,349)	$	(2,218)
Equities		147,838		71,065		(1,197)		69,868
2017
Available-for-sale	$	169,002	$	2,406	$	(1,670)	$	736
Equities		36,573		13,178		(2,896)		10,282
2016
Available-for-sale	$	329,091	$	7,158	$	(3,287)	$	3,871
Equities		89,909		39,668		(959)		38,709

							Net
CALLS/MATURITIES			Gross Realized				Realized
(in thousands)	Proceeds		Gains		Losses		Gain (Loss)
2018
Available-for-sale	$	187,380	$	311	$	(111)	$	200
2017
Available-for-sale	$	195,617	$	262	$	(139)	$	123
2016
Available-for-sale	$	141,255	$	445	$	(2)	$	443

Schedule of assets measured at fair value on recurring basis

Assets measured at fair value on a recurring basis as of December 31, 2018, are summarized below:

			Significant
	Quoted in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government	$	—	$	200,229	$	—	$	200,229
U.S. agency		—		31,904		—		31,904
Non-U.S. govt. & agency		—		7,639		—		7,639
Agency MBS		—		395,253		—		395,253
ABS/CMBS*		—		136,723		—		136,723
Corporate		—		668,679		—		668,679
Municipal		—		320,088		—		320,088
Total fixed income securities - available-for-sale	$	—	$	1,760,515	$	—	$	1,760,515
Equity securities		339,985		498		—		340,483
Total	$	339,985	$	1,761,013	$	—	$	2,100,998

*Non-agency asset-backed & commercial mortgage-backed

Assets measured at fair value on a recurring basis as of December 31, 2017, are summarized below:

			Significant
	Quoted in Active		Other		Significant
	Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Fixed income securities - available-for-sale
U.S. government	$	—	$	91,689	$	—	$	91,689
U.S. agency		—		18,778		—		18,778
Non-U.S. govt. & agency		—		7,588		—		7,588
Agency MBS		—		328,471		—		328,471
ABS/CMBS*		—		70,526		—		70,526
Corporate		—		519,022		—		519,022
Municipal		—		636,165		—		636,165
Total fixed income securities - available-for-sale	$	—	$	1,672,239	$	—	$	1,672,239
Equity securities		400,492		—		—		400,492
Total	$	400,492	$	1,672,239	$	—	$	2,072,731

*Non-agency asset-backed & commercial mortgage-backed

Schedule of contractual maturity of securities

The amortized cost and estimated fair value of fixed income securities at December 31, 2018, by contractual maturity, are shown as follows:

(in thousands)	Amortized Cost		Fair Value
Available-for-sale
Due in one year or less	$	41,319	$	41,333
Due after one year through five years		411,153		410,680
Due after five years through 10 years		615,061		608,115
Due after 10 years		168,716		168,412
Mtge/ABS/CMBS*		540,216		531,975
Total available-for-sale	$	1,776,465	$	1,760,515

*Mortgage-backed, asset-backed & commercial mortgage-backed

Schedule of amortized cost and fair value of available-for-sale securities

In addition, the following table is a schedule of amortized costs and estimated fair values of investments in fixed income securities as of December 31, 2018 and 2017:

2018	Amortized				Gross Unrealized
(in thousands)	Cost		Fair Value		Gains		Losses
Available-for-sale
U.S. government	$	199,982	$	200,229	$	1,232	$	(985)
U.S. agency		31,716		31,904		403		(215)
Non-U.S. govt. & agency		8,170		7,639		—		(531)
Agency MBS		402,992		395,253		1,709		(9,448)
ABS/CMBS*		137,224		136,723		375		(876)
Corporate		681,909		668,679		2,894		(16,124)
Municipal		314,472		320,088		6,926		(1,310)
Total fixed income	$	1,776,465	$	1,760,515	$	13,539	$	(29,489)

2017	Amortized				Gross Unrealized
(in thousands)	Cost		Fair Value		Gains		Losses
Available-for-sale
U.S. government	$	92,561	$	91,689	$	23	$	(895)
U.S. agency		18,541		18,778		347		(110)
Non-U.S. govt. & agency		7,501		7,588		143		(56)
Agency MBS		329,129		328,471		3,420		(4,078)
ABS/CMBS*		70,405		70,526		436		(315)
Corporate		508,128		519,022		12,575		(1,681)
Municipal		620,146		636,165		17,272		(1,253)
Total fixed income	$	1,646,411	$	1,672,239	$	34,216	$	(8,388)

*Non-agency asset-backed & commercial mortgage-backed

Schedule of securities in an unrealized loss position segregated by type and length of time in an unrealized loss position

	December 31, 2018						December 31, 2017
			12 Mos.						12 Mos.
(in thousands)	< 12 Mos.		& Greater		Total		< 12 Mos.		& Greater		Total
U.S. Government
Fair value	$	7,249	$	76,073	$	83,322	$	58,009	$	30,888	$	88,897
Amortized cost		7,270		77,037		84,307		58,443		31,349		89,792
Unrealized Loss	$	(21)	$	(964)	$	(985)	$	(434)	$	(461)	$	(895)
U.S. Agency
Fair value	$	—	$	8,843	$	8,843	$	10,917	$	—	$	10,917
Amortized cost		—		9,058		9,058		11,027		—		11,027
Unrealized Loss	$	—	$	(215)	$	(215)	$	(110)	$	—	$	(110)
Non-U.S. Government
Fair value	$	5,432	$	2,207	$	7,639	$	—	$	1,840	$	1,840
Amortized cost		5,571		2,599		8,170		—		1,896		1,896
Unrealized Loss	$	(139)	$	(392)	$	(531)	$	—	$	(56)	$	(56)
Agency MBS
Fair value	$	25,345	$	261,325	$	286,670	$	122,130	$	111,306	$	233,436
Amortized cost		25,486		270,632		296,118		123,559		113,955		237,514
Unrealized Loss	$	(141)	$	(9,307)	$	(9,448)	$	(1,429)	$	(2,649)	$	(4,078)
ABS/CMBS*
Fair value	$	46,918	$	32,137	$	79,055	$	23,406	$	21,587	$	44,993
Amortized cost		47,146		32,785		79,931		23,491		21,817		45,308
Unrealized Loss	$	(228)	$	(648)	$	(876)	$	(85)	$	(230)	$	(315)
Corporate
Fair value	$	306,177	$	147,751	$	453,928	$	86,946	$	28,600	$	115,546
Amortized cost		315,428		154,624		470,052		87,736		29,491		117,227
Unrealized Loss	$	(9,251)	$	(6,873)	$	(16,124)	$	(790)	$	(891)	$	(1,681)
Municipal
Fair value	$	6,036	$	55,681	$	61,717	$	71,059	$	60,049	$	131,108
Amortized cost		6,052		56,975		63,027		71,534		60,827		132,361
Unrealized Loss	$	(16)	$	(1,294)	$	(1,310)	$	(475)	$	(778)	$	(1,253)
Total fixed income
Fair value	$	397,157	$	584,017	$	981,174	$	372,467	$	254,270	$	626,737
Amortized cost		406,953		603,710		1,010,663		375,790		259,335		635,125
Unrealized Loss	$	(9,796)	$	(19,693)	$	(29,489)	$	(3,323)	$	(5,065)	$	(8,388)

*Non-agency asset-backed & commercial mortgage-backed

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POLICY ACQUISITION COSTS (Tables)

12 Months Ended

Dec. 31, 2018

POLICY ACQUISITION COSTS

Schedule of policy acquisition costs deferred and amortized to income

Policy acquisition costs deferred and amortized to income for the years ended December 31 are summarized as follows:

(in thousands)	2018		2017		2016
Deferred policy acquisition costs (DAC), beginning of year	$	77,716	$	73,147	$	69,829
Deferred:
Direct commissions	$	175,697	$	157,723	$	150,390
Premium taxes		12,654		11,651		11,759
Ceding commissions		(22,190)		(18,096)		(17,488)
Net deferred	$	166,161	$	151,278	$	144,661
Amortized		158,943		146,709		141,343
DAC, end of year	$	84,934	$	77,716	$	73,147
Policy acquisition costs:
Amortized to expense - DAC	$	158,943	$	146,709	$	141,343
Period costs:
Ceding commission - contingent		(2,241)		(3,575)		(1,524)
Other underwriting expenses		111,036		109,381		109,793
Total policy acquisition costs	$	267,738	$	252,515	$	249,612

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REINSURANCE (Tables)

12 Months Ended

Dec. 31, 2018

REINSURANCE

Schedule of premiums written and earned along with losses and settlement expenses incurred

(in thousands)	2018		2017		2016
WRITTEN
Direct	$	934,913	$	848,153	$	844,430
Reinsurance assumed		48,303		37,159		30,434
Reinsurance ceded		(160,041)		(135,458)		(133,912)
Net	$	823,175	$	749,854	$	740,952
EARNED
Direct	$	896,234	$	835,118	$	835,294
Reinsurance assumed		41,926		32,521		27,886
Reinsurance ceded		(146,794)		(129,702)		(134,572)
Net	$	791,366	$	737,937	$	728,608
LOSSES AND SETTLEMENT EXPENSES INCURRED
Direct	$	560,421	$	486,986	$	405,873
Reinsurance assumed		20,376		16,072		13,196
Reinsurance ceded		(152,604)		(101,474)		(69,291)
Net	$	428,193	$	401,584	$	349,778

Schedule of net reinsurance balances recoverable, after consideration of collateral, from top 10 reinsurers

			Net Reinsurer				Ceded
	A.M. Best	S & P	Exposure as of		Percent of		Premiums		Percent of
(dollars in thousands)	Rating	Rating	12/31/2018		Total		Written		Total
Munich Re / HSB	A+, Superior	AA-, Very Strong	$	73,593	17.1	%	$	24,479	15.3	%
Swiss Re / Westport Ins. Corp.	A+, Superior	AA-, Very Strong		35,095	8.2	%		2,100	1.3	%
Endurance Re	A+, Superior	A+, Strong		28,754	6.7	%		6,000	3.8	%
Aspen UK Ltd.	A, Excellent	A, Strong		27,735	6.4	%		7,906	4.9	%
Berkley Insurance Co.	A+, Superior	A+, Strong		23,267	5.4	%		6,335	4.0	%
Hannover Ruckversicherung	A+, Superior	AA-, Very Strong		22,629	5.3	%		9,458	5.9	%
Axis Re	A+, Superior	A+, Strong		19,928	4.6	%		6,424	4.0	%
Transatlantic Re	A+, Superior	A+, Strong		19,517	4.5	%		7,911	4.9	%
Toa Re	A, Excellent	A+, Strong		18,480	4.3	%		6,495	4.1	%
General Re	A++, Superior	AA+, Very Strong		18,168	4.2	%		5,170	3.2	%
Tokio Millennium Re	A+, Superior	A+, Strong		17,044	4.0	%		6,947	4.3	%
All other reinsurers*				125,777	29.3	%		70,816	44.3	%
Total ceded exposure			$	429,987	100.0	%	$	160,041	100.0	%

*All other reinsurance balances recoverable, when considered by individual reinsurer, are less than 2 percent of shareholders’ equity.

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HISTORICAL LOSS AND LAE DEVELOPMENT (Tables)

12 Months Ended

Dec. 31, 2018

HISTORICAL LOSS AND LAE DEVELOPMENT

Schedule of reconciliation of unpaid losses and settlement expenses (LAE)

The following table is a reconciliation of our unpaid losses and settlement expenses (LAE) for the years 2018, 2017 and 2016:

(in thousands)	2018		2017		2016
Unpaid losses and LAE at beginning of year:
Gross	$	1,271,503	$	1,139,337	$	1,103,785
Ceded		(301,991)		(288,224)		(297,844)
Net	$	969,512	$	851,113	$	805,941
Increase (decrease) in incurred losses and LAE:
Current accident year	$	478,143	$	440,452	$	391,772
Prior accident years		(49,950)		(38,868)		(41,994)
Total incurred	$	428,193	$	401,584	$	349,778
Loss and LAE payments for claims incurred:
Current accident year	$	(76,050)	$	(73,392)	$	(70,540)
Prior accident year		(225,306)		(209,793)		(234,066)
Total paid	$	(301,356)	$	(283,185)	$	(304,606)
Net unpaid losses and LAE at end of year	$	1,096,349	$	969,512	$	851,113
Unpaid losses and LAE at end of year:
Gross	$	1,461,348	$	1,271,503	$	1,139,337
Ceded		(364,999)		(301,991)		(288,224)
Net	$	1,096,349	$	969,512	$	851,113

Schedule of incurred and paid claims development

Casualty - Primary Occurrence
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	85,476	$	119,957	$	99,765	$	91,441	$	86,888	$	82,651	$	81,138	$	80,518	$	80,350	$	81,445		$	2,202	5,713
2010				87,875		96,582		93,589		88,820		85,034		80,289		78,685		78,991		80,216			2,392	6,117
2011						91,139		98,428		94,145		89,622		86,342		83,181		82,193		82,248			3,180	5,851
2012								91,807		78,406		65,893		61,072		59,028		59,488		60,328			3,502	5,163
2013										80,823		67,297		62,882		60,329		60,162		59,556			6,538	4,287
2014												88,092		79,497		71,592		67,237		66,389			12,492	4,242
2015														94,835		84,975		83,579		78,675			21,351	4,311
2016																101,950		96,753		90,611			38,505	4,148
2017																		119,741		111,391			64,662	4,119
2018																				141,513			109,482	3,773
																		Total	$	852,372
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	1,972	$	9,233	$	24,115	$	43,702	$	58,460	$	65,913	$	70,220	$	74,920	$	75,948	$	77,175
2010				2,587		13,025		29,312		44,051		55,992		61,929		66,399		69,514		73,318
2011						5,924		17,124		32,978		48,822		60,769		67,358		71,413		74,814
2012								5,897		14,539		23,889		33,822		43,276		47,970		51,611
2013										6,334		13,021		22,366		34,786		40,609		45,753
2014												11,436		18,771		29,545		40,270		47,343
2015														10,157		19,902		33,020		45,056
2016																10,142		24,186		35,764
2017																		13,154		25,933
2018																				15,066
	* Presented as unaudited required supplementary information.																	Total	$	491,833
										All outstanding liabilities before 2009, net of reinsurance										11,911
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	372,450
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		9.7	%	12.4	%	16.8	%	18.6	%	13.9	%	8.2	%	5.5	%	4.6	%	3.0	%	1.5	%

Casualty - Excess Occurrence
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	30,267	$	19,719	$	14,981	$	12,893	$	12,966	$	12,459	$	12,601	$	11,982	$	12,055	$	12,072		$	285	567
2010				29,314		24,244		22,111		18,932		20,044		22,044		21,018		20,530		20,527			369	500
2011						26,272		17,148		17,443		18,641		19,160		20,959		21,295		22,032			824	581
2012								29,042		21,558		21,021		21,885		21,231		22,433		23,020			1,386	855
2013										39,984		34,824		26,857		25,425		25,599		24,922			3,488	933
2014												50,889		39,095		35,119		32,274		33,372			8,832	875
2015														53,672		50,857		47,392		42,840			14,320	669
2016																56,341		49,385		37,676			25,675	572
2017																		62,863		55,868			43,891	473
2018																				69,362			63,524	258
																		Total	$	341,691
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	956	$	3,947	$	6,585	$	9,460	$	11,001	$	10,808	$	11,776	$	11,780	$	11,786	$	11,787
2010				7		6,002		10,705		13,282		15,512		17,302		19,175		19,256		19,308
2011						2,169		5,145		6,981		8,793		10,772		16,494		17,769		20,214
2012								1,315		3,573		8,843		15,380		16,879		17,747		19,310
2013										1,060		5,701		10,967		14,545		16,967		17,956
2014												1,899		4,006		11,002		18,852		22,541
2015														2,048		10,127		19,571		23,184
2016																1,068		3,396		7,441
2017																		17		5,679
2018																				2,506
	* Presented as unaudited required supplementary information.																	Total	$	149,926
										All outstanding liabilities before 2009, net of reinsurance										17,918
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	209,683
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		4.5	%	15.3	%	18.9	%	17.0	%	10.0	%	8.2	%	7.4	%	3.8	%	0.2	%	0.0	%

Casualty - Claims Made
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	12,918	$	13,703	$	9,687	$	13,562	$	11,710	$	13,117	$	12,810	$	12,053	$	11,827	$	16,056		$	398	383
2010				13,690		15,556		9,776		10,429		11,689		10,581		9,175		9,024		8,735			219	502
2011						17,416		17,454		12,260		10,619		8,510		7,720		7,852		11,506			640	682
2012								27,576		26,144		20,727		19,590		18,022		17,612		17,569			1,251	803
2013										40,095		41,488		44,054		40,288		38,473		37,959			3,751	1,042
2014												53,929		55,386		58,152		55,350		51,554			7,271	1,304
2015														55,006		47,831		42,206		39,906			10,559	1,335
2016																59,992		67,760		69,493			23,817	1,500
2017																		60,572		62,450			35,365	1,627
2018																				66,128			50,820	1,272
																		Total	$	381,356
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	113	$	442	$	773	$	3,413	$	5,176	$	10,678	$	11,217	$	11,398	$	11,475	$	11,955
2010				259		1,548		2,308		3,626		5,733		5,749		6,956		8,485		8,512
2011						330		1,949		4,508		5,947		5,637		6,209		6,835		7,132
2012								433		4,086		6,898		9,218		10,968		14,378		15,621
2013										792		7,073		18,425		26,121		29,678		32,789
2014												1,705		9,775		27,923		35,755		40,080
2015														2,215		10,738		16,774		20,920
2016																2,060		14,558		27,465
2017																		2,455		11,350
2018																				1,964
	* Presented as unaudited required supplementary information.																	Total	$	177,788
										All outstanding liabilities before 2009, net of reinsurance										933
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	204,501
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		3.0	%	15.3	%	18.5	%	14.7	%	10.0	%	13.4	%	7.4	%	7.1	%	0.4	%	3.0	%

Casualty - Transportation
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	26,349	$	23,366	$	23,174	$	22,929	$	22,613	$	22,340	$	21,958	$	21,969	$	21,926	$	21,911		$	19	2,644
2010				27,239		23,390		24,912		25,593		23,981		23,625		23,701		23,786		23,776			44	2,843
2011						22,957		23,479		25,747		25,272		25,431		25,376		25,167		25,614			52	2,469
2012								21,452		22,203		22,924		23,511		23,689		23,620		23,305			76	2,284
2013										32,742		32,853		32,989		37,673		38,811		39,974			350	2,852
2014												38,361		33,015		36,452		38,590		40,202			911	3,099
2015														38,561		46,258		47,021		46,395			3,824	3,179
2016																50,430		53,519		54,105			7,632	3,920
2017																		55,640		53,641			16,406	3,597
2018																				57,597			16,690	3,154
																		Total	$	386,520
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	5,035	$	8,698	$	14,613	$	19,933	$	21,100	$	21,325	$	21,640	$	21,650	$	21,650	$	21,650
2010				6,296		10,116		15,475		20,045		21,792		23,063		23,488		23,533		23,556
2011						5,295		9,485		14,477		19,443		22,375		23,537		23,941		24,377
2012								4,466		8,533		12,394		17,318		20,931		22,566		22,730
2013										5,306		11,978		19,761		28,220		33,480		35,923
2014												7,125		13,933		19,676		27,457		33,190
2015														6,984		20,709		29,554		37,222
2016																8,923		18,354		30,354
2017																		7,979		17,070
2018																				6,980
	* Presented as unaudited required supplementary information.																	Total	$	253,052
										All outstanding liabilities before 2009, net of reinsurance										90
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	133,558
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		17.9	%	18.2	%	20.1	%	20.2	%	11.2	%	4.8	%	1.4	%	0.6	%	0.0	%	0.0	%

Property
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	59,975	$	55,821	$	52,286	$	49,534	$	48,969	$	48,857	$	48,707	$	49,267	$	49,323	$	48,925		$	13	2,630
2010				63,194		59,145		55,427		53,937		54,153		52,927		52,964		52,952		52,903			29	2,851
2011						70,246		66,924		64,976		63,724		62,770		62,570		62,456		62,875			142	3,028
2012								85,485		80,155		79,181		77,569		79,175		78,125		78,161			167	2,640
2013										63,864		62,090		62,173		62,114		61,914		61,834			273	2,995
2014												56,587		49,441		48,801		48,761		49,217			315	4,560
2015														59,863		56,103		53,958		52,720			680	4,076
2016																62,900		55,594		55,384			2,093	3,369
2017																		90,803		83,273			9,346	2,873
2018																				89,091			23,235	2,030
																		Total	$	634,383
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	25,464	$	40,775	$	43,758	$	46,004	$	48,031	$	48,297	$	48,329	$	49,051	$	49,173	$	48,898
2010				25,274		43,091		47,743		50,055		52,729		52,426		52,719		52,851		52,855
2011						27,676		48,756		55,778		59,099		60,272		61,428		61,834		62,729
2012								39,074		66,509		72,057		73,705		75,640		76,152		77,159
2013										32,208		50,840		57,407		59,259		60,520		61,195
2014												30,550		43,380		46,148		46,528		47,799
2015														32,184		49,348		50,197		51,290
2016																33,134		46,921		51,371
2017																		41,314		66,818
2018																				37,048
	* Presented as unaudited required supplementary information.																	Total	$	557,162
										All outstanding liabilities before 2009, net of reinsurance										17
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	77,238
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		52.0	%	30.9	%	7.4	%	3.2	%	3.0	%	0.7	%	0.6	%	1.0	%	0.1	%	-0.6	%

Surety
(in thousands, except number of claims)
	Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance																						As of December 31, 2018
	For the Years Ended December 31,																							Cumulative
																								Number of
																								Reported
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018			Total IBNR	Claims
2009	$	15,474	$	4,896	$	4,708	$	4,246	$	4,146	$	4,551	$	4,288	$	4,923	$	4,860	$	4,935		$	2	1,665
2010				13,961		8,205		6,630		7,076		6,810		7,136		7,645		6,244		6,580			14	1,540
2011						13,842		17,832		17,792		17,321		16,766		16,695		16,480		18,281			13	1,674
2012								17,114		11,452		8,667		8,180		7,867		7,471		7,099			22	1,469
2013										16,080		7,516		6,170		5,399		5,271		5,231			50	1,400
2014												16,450		8,106		5,225		4,427		4,267			88	1,337
2015														16,958		12,957		11,113		10,456			824	1,201
2016																18,928		11,062		9,351			1,543	1,307
2017																		16,127		8,641			3,630	1,409
2018																				16,765			14,535	654
																		Total	$	91,606
	Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance
								For the Years Ended December 31,
AY		2009*		2010*		2011*		2012*		2013*		2014*		2015*		2016*		2017*		2018
2009	$	892	$	1,914	$	2,382	$	2,493	$	3,490	$	4,336	$	3,919	$	3,908	$	4,849	$	4,933
2010				1,724		3,205		5,702		7,092		7,151		7,285		7,822		6,663		6,637
2011						8,160		16,932		17,151		17,403		17,212		17,086		17,086		17,013
2012								1,883		6,680		6,726		7,416		7,536		7,406		7,065
2013										1,116		2,856		4,701		4,911		5,098		5,150
2014												722		4,283		4,166		4,059		4,131
2015														3,192		6,719		7,695		9,436
2016																3,087		5,817		6,299
2017																		979		2,862
2018																				1,835
	* Presented as unaudited required supplementary information.																	Total	$	65,361
										All outstanding liabilities before 2009, net of reinsurance										1,992
								Liabilities for losses and loss adjustment expenses, net of reinsurance											$	28,237
	Average Annual Percentage Payout of Incurred Losses by Age, Net of Reinsurance
Years		1		2		3		4		5		6		7		8		9		10
		24.0	%	40.0	%	12.0	%	7.5	%	4.5	%	3.5	%	-1.3	%	-6.1	%	9.3	%	1.7	%

Schedule of reconciliation of the net incurred and paid loss development tables to the liability for unpaid losses and settlement expenses in the consolidated balance sheet

Reconciliation of the Disclosure of Incurred and Paid Loss Development to the Liability for Unpaid Losses and Settlement Expenses
(in thousands)	December 31, 2018		December 31, 2017
Net outstanding liabilities:
Casualty - Primary Occurrence	$	372,450	$	325,182
Casualty - Excess Occurrence		209,683		188,963
Casualty - Claims Made		204,501		171,241
Casualty - Transportation		133,558		119,704
Property		77,238		68,867
Surety		28,237		23,375
Unallocated loss adjustment expenses		50,891		48,844
Allowance for uncollectible reinsurance balances recoverable on unpaid losses and settlement expenses		9,793		10,014
Other		9,998		13,322
Liabilities for unpaid loss and settlement expenses, net of reinsurance	$	1,096,349	$	969,512
Reinsurance recoverable on unpaid claims:
Casualty - Primary Occurrence	$	34,742	$	36,158
Casualty - Excess Occurrence		81,072		74,400
Casualty - Claims Made		144,921		117,436
Casualty - Transportation		50,748		46,590
Property		50,495		28,613
Surety		11,834		7,079
Allowance for uncollectible reinsurance balances recoverable on unpaid losses and settlement expenses		(9,793)		(10,014)
Other		980		1,729
Total reinsurance balances recoverable on unpaid losses and settlement expenses	$	364,999	$	301,991
Total gross liability for unpaid loss and settlement expenses	$	1,461,348	$	1,271,503

Schedule of prior accident years' loss reserve development by segment

(FAVORABLE)/UNFAVORABLE RESERVE DEVELOPMENT BY SEGMENT
(in thousands)	2018		2017		2016
Casualty	$	(33,252)	$	(17,462)	$	(32,401)
Property		(10,813)		(12,134)		(4,793)
Surety		(5,885)		(9,272)		(4,800)
Total	$	(49,950)	$	(38,868)	$	(41,994)

Schedule of paid and unpaid environmental, asbestos and mass tort claims data (including incurred but not reported losses)

(in thousands)	2018		2017		2016
Loss and LAE Payments (Cumulative):
Gross	$	136,043	$	132,883	$	130,358
Ceded		(68,638)		(67,507)		(66,644)
Net	$	67,405	$	65,376	$	63,714
Unpaid Losses and LAE at End of Year:
Gross	$	24,262	$	28,042	$	28,815
Ceded		(5,373)		(5,715)		(4,987)
Net	$	18,889	$	22,327	$	23,828

XML

INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2018

INCOME TAXES

Schedule of deferred tax assets and deferred tax liabilities

(in thousands)	2018		2017
Deferred tax assets:
Tax discounting of unpaid losses and settlement expenses	$	18,327	$	20,020
Unearned premium offset		17,864		16,528
Deferred compensation		2,700		1,435
Stock option expense		2,702		2,283
Other		616		578
Deferred tax assets before allowance	$	42,209	$	40,844
Less valuation allowance		—		—
Total deferred tax assets	$	42,209	$	40,844
Deferred tax liabilities:
Net unrealized appreciation of securities	$	22,177	$	51,448
Deferred policy acquisition costs		17,836		16,320
Discounting of unpaid losses and settlement expenses - TCJA implementation offset		5,203		9,466
Book/tax depreciation		3,133		3,159
Intangible assets		1,711		584
Undistributed earnings of unconsolidated investees		15,811		13,431
Other		576		204
Total deferred tax liabilities	$	66,447	$	94,612
Net deferred tax liability	$	(24,238)	$	(53,768)

Schedule of reconciliation of income tax expense attributable to income from operations with amounts computed by applying the U.S. federal tax rate to pretax income from continuing operations

(in thousands)	2018					2017					2016
Provision for income taxes at the statutory federal tax rates	$	14,192		21.0	%	$	29,606		35.0	%	$	54,979		35.0	%
Increase (reduction) in taxes resulting from:
Enactment of Tax Cuts and Jobs Act (TCJA)		(2,268)		(3.4)	%		(32,821)		(38.8)	%		—		—	%
Excess tax benefit on share-based compensation		(4,533)		(6.7)	%		(5,798)		(6.9)	%		—		—	%
Dividends received deduction		(775)		(1.1)	%		(2,025)		(2.4)	%		(2,216)		(1.4)	%
ESOP dividends paid deduction		(1,184)		(1.8)	%		(2,905)		(3.4)	%		(3,302)		(2.1)	%
Tax-exempt interest income		(1,795)		(2.7)	%		(4,671)		(5.5)	%		(4,263)		(2.7)	%
Unconsolidated investee dividends		—		—	%		(1,351)		(1.6)	%		(2,772)		(1.8)	%
Other items, net		(235)		(0.3)	%		(474)		(0.6)	%		(264)		(0.2)	%
Total	$	3,402		5.0	%	$	(20,439)		(24.2)	%	$	42,162		26.8	%

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EMPLOYEE BENEFITS (Tables)

12 Months Ended

Dec. 31, 2018

EMPLOYEE BENEFITS

Schedule of stock option activity

The following tables summarize option activity in 2018, 2017 and 2016:

				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2018	2,257,015	$	46.80
Options granted	432,000	$	64.91
Options exercised	(705,785)	$	36.81		$	24,304
Options canceled/forfeited	(18,350)	$	60.84
Outstanding options at December 31, 2018	1,964,880	$	54.24	5.25	$	29,317
Exercisable options at December 31, 2018	724,730	$	46.62	3.79	$	16,212

				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2017	2,207,110	$	40.90
Options granted	482,375	$	57.12
Options exercised	(390,870)	$	26.07		$	12,779
Options canceled/forfeited	(41,600)	$	48.30
Outstanding options at December 31, 2017	2,257,015	$	46.80	4.88	$	32,620
Exercisable options at December 31, 2017	975,055	$	38.66	3.25	$	21,780

				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2016	2,582,220	$	32.42
Options granted	440,750	$	63.54
Options exercised	(756,380)	$	24.87		$	31,328
Options canceled/forfeited	(59,480)	$	44.39
Outstanding options at December 31, 2016	2,207,110	$	40.90	4.93	$	49,531
Exercisable options at December 31, 2016	862,605	$	31.23	3.27	$	27,523

Schedule of stock option assumptions for fair value estimate

	2018			2017			2016
Weighted-average fair value of grants	$	10.58		$	8.00		$	11.38
Risk-free interest rates		2.72	%		1.90	%		1.21	%
Dividend yield		2.98	%		3.60	%		1.61	%
Expected volatility		22.87	%		22.95	%		23.06	%
Expected option life		5.07	years		5.05	years		5.04	years

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STATUTORY INFORMATION AND DIVIDEND RESTRICTIONS (Tables)

12 Months Ended

Dec. 31, 2018

STATUTORY INFORMATION AND DIVIDEND RESTRICTIONS

Schedule of selected information for insurance subsidiaries

(in thousands)	2018		2017		2016
Consolidated net income, statutory basis	$	135,791	$	72,889	$	128,165
Consolidated surplus, statutory basis	$	829,775	$	864,554	$	859,976

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COMMITMENTS AND CONTINGENT LIABILITIES (Tables)

12 Months Ended

Dec. 31, 2018

COMMITMENTS AND CONTINGENT LIABILITIES

Schedule of minimum future rental payments under noncancellable leases

(in thousands)
2019	$	5,911
2020		6,019
2021		5,924
2022		5,884
2023		4,459
2024-2035		3,968
Total minimum future rental payments	$	32,165

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OPERATING SEGMENT INFORMATION (Tables)

12 Months Ended

Dec. 31, 2018

OPERATING SEGMENT INFORMATION

Schedule of revenues and net earnings by segment

REVENUES
(in thousands)	2018		2017		2016
Casualty	$	523,472	$	478,603	$	454,843
Property		149,261		138,346		152,167
Surety		118,633		120,988		121,598
Net premiums earned	$	791,366	$	737,937	$	728,608
Net investment income		62,085		54,876		53,075
Net realized gains		63,407		4,411		34,645
Net unrealized losses on equity securities		(98,735)		—		—
Total	$	818,123	$	797,224	$	816,328

INSURANCE EXPENSES
(in thousands)	2018		2017		2016
Loss and settlement expenses:
Casualty	$	329,763	$	305,679	$	259,907
Property		83,822		85,027		71,350
Surety		14,608		10,878		18,521
Total net loss and settlement expenses	$	428,193	$	401,584	$	349,778
Policy acquisition costs:
Casualty	$	151,007	$	136,135	$	128,566
Property		51,830		51,070		54,167
Surety		64,901		65,310		66,879
Total policy acquisition costs	$	267,738	$	252,515	$	249,612
Other insurance expenses:
Casualty	$	31,562	$	32,885	$	30,040
Property		12,725		14,108		13,819
Surety		9,516		10,001		9,234
Total other insurance expenses	$	53,803	$	56,994	$	53,093
Total	$	749,734	$	711,093	$	652,483

NET EARNINGS (LOSSES)
(in thousands)	2018		2017		2016
Casualty	$	11,140	$	3,904	$	36,329
Property		884		(11,859)		12,832
Surety		29,608		34,799		26,964
Net underwriting income	$	41,632	$	26,844	$	76,125
Net investment income		62,085		54,876		53,075
Net realized gains		63,407		4,411		34,645
Net unrealized losses on equity securities		(98,735)		—		—
General corporate expense and interest on debt		(16,864)		(18,766)		(17,596)
Equity in earnings of unconsolidated investees		16,056		17,224		10,833
Total earnings before incomes taxes	$	67,581	$	84,589	$	157,082
Income tax expense (benefit)	$	3,402	$	(20,439)	$	42,162
Total	$	64,179	$	105,028	$	114,920

Schedule of net premiums earned by major product type

NET PREMIUMS EARNED	Year ended December 31,
(in thousands)	2018		2017		2016
CASUALTY
Commercial excess and personal umbrella	$	124,350	$	115,543	$	111,079
General liability		93,928		90,283		86,853
Commercial transportation		81,053		78,061		81,402
Professional services		79,951		78,508		75,872
Small commercial		51,519		49,601		45,660
Executive products		21,326		18,086		18,755
Medical professional liability		16,042		17,072		17,449
Other casualty		55,303		31,449		17,773
Total	$	523,472	$	478,603	$	454,843
PROPERTY
Commercial property	$	71,501	$	63,117	$	68,165
Marine		59,795		50,931		48,301
Specialty personal		16,901		20,793		24,981
Other property		1,064		3,505		10,720
Total	$	149,261	$	138,346	$	152,167
SURETY
Miscellaneous	$	46,968	$	47,237	$	46,235
Contract		28,196		28,573		28,240
Commercial		26,751		27,625		29,105
Energy		16,718		17,553		18,018
Total	$	118,633	$	120,988	$	121,598
Grand total	$	791,366	$	737,937	$	728,608

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UNAUDITED INTERIM FINANCIAL INFORMATION (Tables)

12 Months Ended

Dec. 31, 2018

UNAUDITED INTERIM FINANCIAL INFORMATION

Schedule of selected quarterly information

Select unaudited quarterly information is as follows:

(in thousands, except per share data)	First		Second		Third		Fourth		Year
2018
Net premiums earned	$	190,027	$	196,522	$	200,815	$	204,002	$	791,366
Net investment income		14,232		14,577		16,314		16,962		62,085
Net realized gains (losses)		8,404		20,849		18,647		15,507		63,407
Net unrealized gains (losses) on equity securities		(26,772)		(12,611)		4,848		(64,200)		(98,735)
Earnings (losses) before income taxes		14,378		39,562		46,349		(32,708)		67,581
Net earnings (loss)		12,216		33,251		39,372		(20,660)		64,179
Basic earnings per share(1)	$	0.28	$	0.75	$	0.89	$	(0.46)	$	1.45
Diluted earnings per share(1)	$	0.27	$	0.74	$	0.88	$	(0.46)	$	1.43
2017
Net premiums earned	$	183,285	$	184,331	$	182,025	$	188,296	$	737,937
Net investment income		13,005		13,238		14,187		14,446		54,876
Net realized gains (losses)		624		(1,359)		35		5,111		4,411
Net unrealized gains (losses) on equity securities		—		—		—		—		—
Earnings (losses) before income taxes		26,443		34,036		(862)		24,972		84,589
Net earnings (loss)		19,828		26,208		1,734		57,258		105,028
Basic earnings per share(1)	$	0.45	$	0.60	$	0.04	$	1.30	$	2.39
Diluted earnings per share(1)	$	0.45	$	0.59	$	0.04	$	1.29	$	2.36

Since the weighted-average shares for the quarters are calculated independently of the weighted-average shares for the year, quarterly earnings per share may not total to annual earnings per share.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Description of Business (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) state company $ / shares	Dec. 31, 2017 $ / shares
DESCRIPTION OF BUSINESS
Number of insurance companies through which the entity conducts operations | company	3
Common Stock, Par or Stated Value Per Share | $ / shares	$ 0.01	$ 1.00
RLI Ins.
DESCRIPTION OF BUSINESS
Number of states in which entity operates	50
Mt. Hawley Insurance Company
DESCRIPTION OF BUSINESS
Number of states in which entity operates	50
Contractors Bonding and Insurance Company
DESCRIPTION OF BUSINESS
Number of states in which entity operates	50
Common stock
DESCRIPTION OF BUSINESS
Reclassification due to change in par value | $	$ (66,409)
Paid-in Capital
DESCRIPTION OF BUSINESS
Reclassification due to change in par value | $	$ 66,409

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounting Standards (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated other comprehensive earnings	$ (14,572)				$ (14,572)	$ 157,919
Retained earnings	908,079				908,079	788,522
Net unrealized losses on equity securities	(64,200)	$ 4,848	$ (12,611)	$ (26,772)	(98,735)
Unrealized Gain (Loss) Net Of Tax On Equity Securities Recognized in Other Comprehensive Income						24,000	$ 5,600
Income tax expense (benefit)					3,402	(20,439)	42,162
Assets	3,105,065				3,105,065	2,947,244
Liabilities	$ 2,298,223				2,298,223	2,093,646
Expense associated with operating leases					$ 6,900	$ 6,800	$ 6,400
Percentage Of Fixed Income Portfolio Rated A Or Better	84.00%				84.00%
Tax rate used (as a percent)					21.00%	35.00%	35.00%
Allocated Share-based Compensation Expense					$ 4,500	$ 4,400	$ 4,100
Accounting Standards Update 2014-09
Percent of Revenue Out of Scope of ASU 2014-09					99.00%
Accounting Standards Update 2016-01
Accumulated other comprehensive earnings	$ (142,200)				$ (142,200)
Retained earnings	142,200				142,200
Net unrealized losses on equity securities					98,700
Income tax expense (benefit)					(20,700)
Accounting Standards Update 2018-02
Accumulated other comprehensive earnings	3,700				3,700
Retained earnings	(3,700)				(3,700)
Scenario Forecast Adjustment | Minimum | Accounting Standards Update 2016-02
Assets	25,000				25,000
Liabilities	25,000				25,000
Scenario Forecast Adjustment | Maximum | Accounting Standards Update 2016-02
Assets	30,000				30,000
Liabilities	$ 30,000				30,000
Outside director | Restricted Stock Units (RSUs) [Member]
Allocated Share-based Compensation Expense					$ 300

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2018
Equipment | Minimum
PROPERTY AND EQUIPMENT
Useful life	3 years
Equipment | Maximum
PROPERTY AND EQUIPMENT
Useful life	10 years
Buildings and improvements | Maximum
PROPERTY AND EQUIPMENT
Useful life	30 years

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Investment in Unconsolidated Investees (Details)	3 Months Ended								12 Months Ended
	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) item	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
INVESTMENT IN UNCONSOLIDATED INVESTEES:
Investment amount	$ 94,967,000				$ 90,067,000				$ 94,967,000	$ 90,067,000
Investee earnings recorded in income									16,056,000	17,224,000	$ 10,833,000
Reinsurance assumed									48,303,000	37,159,000	30,434,000
Net premiums earned	$ 204,002,000	$ 200,815,000	$ 196,522,000	$ 190,027,000	188,296,000	$ 182,025,000	$ 184,331,000	$ 183,285,000	791,366,000	737,937,000	728,608,000
Additional summarized financial information for investee
Dividends received									$ 9,900,000	0	9,900,000
Maui Jim Inc.
INVESTMENT IN UNCONSOLIDATED INVESTEES:
Equity ownership interest (as a percent)	40.00%								40.00%
Prime Holdings Insurance Services, Inc. (Prime)
INVESTMENT IN UNCONSOLIDATED INVESTEES:
Equity ownership interest (as a percent)	23.00%								23.00%
Maui Jim Inc.
INVESTMENT IN UNCONSOLIDATED INVESTEES:
Investment amount	$ 79,500,000				77,700,000				$ 79,500,000	77,700,000
Investee earnings recorded in income									12,500,000	14,400,000	9,700,000
Total investee net income									30,300,000	34,400,000	26,900,000
Additional summarized financial information for investee
Total assets	265,600,000				259,400,000				265,600,000	259,400,000
Total liabilities	90,400,000				88,000,000				90,400,000	88,000,000
Total equity	175,200,000				171,400,000				175,200,000	171,400,000
Undistributed earnings included in retained earnings	68,900,000								68,900,000
Dividends received									9,900,000	0	9,900,000
Prime Holdings Insurance Services, Inc. (Prime)
INVESTMENT IN UNCONSOLIDATED INVESTEES:
Investment amount	$ 15,400,000				$ 12,400,000				15,400,000	12,400,000
Investee earnings recorded in income									$ 3,600,000	2,800,000	1,100,000
Number of insurance carriers Company writes through | item									2
Equity ownership interest (as a percent)	23.00%								23.00%
Percentage of quota share reinsurance treaty, effective January 1, 2014									25.00%
Reinsurance assumed									$ 41,100,000	29,600,000	13,400,000
Net premiums earned									$ 34,200,000	$ 21,000,000	$ 11,400,000

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Intangible Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets
Goodwill	$ 46,062,000	$ 49,657,000
State insurance licenses	7,500,000	7,500,000
Definite-lived intangibles, net of accumulated amortization of $3,062 at 12/31/18 and $5,678 at 12/31/17	972,000	2,145,000
Accumulated amortization of definite-lived intangibles	3,062,000	5,678,000
Total intangibles	8,472,000	9,645,000
Goodwill and intangibles	54,534,000	59,302,000
Goodwill and Intangible Asset Impairment	4,400,000
Amortization of intangible assets	400,000	700,000	$ 900,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	400,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	400,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	100,000
Energy Surety
Goodwill and Intangible Assets
Goodwill	25,706,000	25,706,000
Miscellaneous and Contract Surety
Goodwill and Intangible Assets
Goodwill	15,110,000	15,110,000
Small commercial
Goodwill and Intangible Assets
Goodwill	5,246,000	5,246,000
Medical professional liability
Goodwill and Intangible Assets
Goodwill	0	3,595,000
Casualty segment | Medical professional liability
Goodwill and Intangible Assets
Goodwill, Impaired, Accumulated Impairment Loss	12,400,000	8,800,000
Goodwill and Intangible Asset Impairment	4,400,000	3,400,000
Goodwill, Impairment Loss	3,600,000	1,600,000	$ 7,200,000
Impairment of Intangible Assets, Finite-lived	$ 800,000	$ 1,800,000

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic EPS, Income (Numerator)
Income available to common shareholders									$ 64,179	$ 105,028	$ 114,920
Diluted EPS, Income (Numerator)
Income available to common shareholders									$ 64,179	$ 105,028	$ 114,920
Basic EPS, Weighted Average Shares (Denominator)
Number of shares outstanding									44,358	44,033	43,772
Effect of Dilutive Securities, Shares (Denominator)
Stock options (in shares)									477	467	660
Diluted EPS, Weighted Average Shares (Denominator)
Number of shares outstanding									44,835	44,500	44,432
Basic EPS, Per Share Amount
Basic net earnings per share (in dollars per share)	$ (0.46)	$ 0.89	$ 0.75	$ 0.28	$ 1.30	$ 0.04	$ 0.60	$ 0.45	$ 1.45	$ 2.39	$ 2.63
Diluted EPS, Per Share Amount
Diluted earnings per share (in dollars per share)	$ (0.46)	$ 0.88	$ 0.74	$ 0.27	$ 1.29	$ 0.04	$ 0.59	$ 0.45	$ 1.43	$ 2.36	$ 2.59

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Changes in Accumulated Other Comprehensive Earnings (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
COMPREHENSIVE EARNINGS
Tax rate used (as a percent)									21.00%	35.00%	35.00%
Other comprehensive income (loss), tax									$ (9,000)	$ 19,000	$ (600)
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance				$ 157,919					157,919
Net current-period other comprehensive earnings (loss)									(33,997)	35,309	(1,164)
Ending balance	$ (14,572)				$ 157,919				(14,572)	157,919
Reclassification Adjustment Out of Accumulated Other Comprehensive Income Abstract
Net realized gains									63,624	6,970	34,740
Other-than-temporary-impairment (OTTI) losses on investments									(217)	(2,559)	(95)
Earnings before income taxes	(32,708)	$ 46,349	$ 39,562	14,378	24,972	$ (862)	$ 34,036	$ 26,443	67,581	84,589	157,082
Income tax expense									(3,402)	20,439	(42,162)
Net earnings	(20,660)	$ 39,372	$ 33,251	12,216	57,258	$ 1,734	$ 26,208	19,828	64,179	105,028	114,920
Unrealized Gains and Losses on Available-for-Sale Securities
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance				$ 157,919				$ 122,610	157,919	122,610	123,774
Cumulative effect adjustment of ASU 2016-01	(142,219)								(142,219)
Adjusted beginning balance	15,700				122,610				15,700	122,610	123,774
Other comprehensive earnings before reclassifications									(35,763)	40,887	26,740
Amounts reclassified from accumulated other comprehensive earnings									1,766	(5,578)	(27,904)
Net current-period other comprehensive earnings (loss)									(33,997)	35,309	(1,164)
Reclassification of stranded tax effect per ASU 2018-02									3,725
Ending balance	$ (14,572)				$ 157,919				(14,572)	157,919	122,610
Reclassifications out of accumulated other comprehensive earnings
Reclassification Adjustment Out of Accumulated Other Comprehensive Income Abstract
Net realized gains									(2,018)	11,141	43,024
Other-than-temporary-impairment (OTTI) losses on investments									(217)	(2,559)	(95)
Earnings before income taxes									(2,235)	8,582	42,929
Income tax expense									469	(3,004)	(15,025)
Net earnings									$ (1,766)	$ 5,578	$ 27,904

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Insurance Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Unpaid losses and settlement expenses	$ 1,461,348	$ 1,271,503	$ 1,139,337	$ 1,103,785

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Catastrophe Exposures (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
California earthquake
Catastrophe Exposures
Catastrophe reinsurance	$ 400	$ 300
First-dollar retention	25	25
Non-California earthquake
Catastrophe Exposures
Catastrophe reinsurance	425	325
First-dollar retention	25	25
Other perils
Catastrophe Exposures
Catastrophe reinsurance	275	225
First-dollar retention	$ 25	$ 25

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INVESTMENTS - Net Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net investment income
Gross investment income									$ 66,614	$ 59,794	$ 57,883
Less investment expenses									(4,529)	(4,918)	(4,808)
Net Investment Income	$ 16,962	$ 16,314	$ 14,577	$ 14,232	$ 14,446	$ 14,187	$ 13,238	$ 13,005	62,085	54,876	53,075
Debt securities
Net investment income
Gross investment income									54,491	48,343	46,834
Equity securities
Net investment income
Gross investment income									9,814	10,506	10,929
Cash and Short-term Investments
Net investment income
Gross investment income									$ 2,309	$ 945	$ 120

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INVESTMENTS - Realized and Unrealized Gains (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
INVESTMENTS
Net realized gains (losses), excluding OTTI									$ 63,624	$ 6,970	$ 34,740
OTTI									(217)	(2,559)	(95)
Total net realized gains (losses)	$ 15,507	$ 18,647	$ 20,849	$ 8,404	$ 5,111	$ 35	$ (1,359)	$ 624	63,407	4,411	34,645
Net changes in unrealized gains (losses) on investments:									(141,770)	54,323	(1,791)
Net unrealized losses on equity securities	$ (64,200)	$ 4,848	$ (12,611)	$ (26,772)					(98,735)
Net realized gains (losses) and changes in unrealized gains (losses) on investments									(78,363)	58,734	32,854
Goodwill and Intangible Asset Impairment									4,400
Debt securities | Available for sale securities
INVESTMENTS
Net realized gains (losses), excluding OTTI									(2,018)	859	4,314
Net changes in unrealized gains (losses) on investments:									(41,778)	16,846	(10,972)
Equity securities
INVESTMENTS
Net realized gains (losses), excluding OTTI									69,868	10,282	38,709
Net unrealized losses on equity securities									(98,380)	36,844	8,659
Other
INVESTMENTS
Net realized gains (losses), excluding OTTI									(4,226)	(4,171)	(8,283)
Net changes in unrealized gains (losses) on investments:									(355)	29
Equity Method Investments [Member]
INVESTMENTS
Net changes in unrealized gains (losses) on investments:									$ (1,257)	$ 604	$ 522

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INVESTMENTS - Disposition of Fixed Securities and Equities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt securities | Available for sale securities | SALES
Summary of the disposition of fixed maturities and equities
Proceeds From Sales	$ 394,318	$ 169,002	$ 329,091
Gross Realized Gains	3,131	2,406	7,158
Gross Realized Losses	(5,349)	(1,670)	(3,287)
Marketable Securities, Realized Gain (Loss), Excluding Other than Temporary Impairments, Total	(2,218)	736	3,871
Debt securities | Available for sale securities | CALLS/MATURITIES
Summary of the disposition of fixed maturities and equities
Proceeds From Sales	187,380	195,617	141,255
Gross Realized Gains	311	262	445
Gross Realized Losses	(111)	(139)	(2)
Marketable Securities, Realized Gain (Loss), Excluding Other than Temporary Impairments, Total	200	123	443
Equity securities | SALES
Summary of the disposition of fixed maturities and equities
Proceeds From Sales	147,838	36,573	89,909
Gross Realized Gains	71,065	13,178	39,668
Gross Realized Losses	(1,197)	(2,896)	(959)
Marketable Securities, Realized Gain (Loss), Excluding Other than Temporary Impairments, Total	$ 69,868	$ 10,282	$ 38,709

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INVESTMENTS - Assets Measured At Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets measured at Fair Value
Available-for-sale fixed income	$ 1,760,515	$ 1,672,239
Equity securities, at fair value (cost - $220,373 in 2018 and $182,002 in 2017)	340,483	400,492
Transfers in (out of) level 1	0	0
Transfers in (out of) level 2	0	0
U.S. government
Assets measured at Fair Value
Available-for-sale fixed income	200,229	91,689
U.S. Agency
Assets measured at Fair Value
Available-for-sale fixed income	31,904	18,778
Non-U.S. govt. & agency
Assets measured at Fair Value
Available-for-sale fixed income	7,639	7,588
Mortgage-backed
Assets measured at Fair Value
Available-for-sale fixed income	395,253	328,471
ABS/CMBS
Assets measured at Fair Value
Available-for-sale fixed income	136,723	70,526
Corporate Debt
Assets measured at Fair Value
Available-for-sale fixed income	668,679	519,022
Municipal
Assets measured at Fair Value
Available-for-sale fixed income	320,088	636,165
Fair value measured on recurring basis
Assets measured at Fair Value
Available-for-sale fixed income	1,760,515	1,672,239
Total assets at fair value	2,100,998	2,072,731
Fair value measured on recurring basis | U.S. government
Assets measured at Fair Value
Available-for-sale fixed income	200,229	91,689
Fair value measured on recurring basis | U.S. Agency
Assets measured at Fair Value
Available-for-sale fixed income	31,904	18,778
Fair value measured on recurring basis | Non-U.S. govt. & agency
Assets measured at Fair Value
Available-for-sale fixed income	7,639	7,588
Fair value measured on recurring basis | Mortgage-backed
Assets measured at Fair Value
Available-for-sale fixed income	395,253	328,471
Fair value measured on recurring basis | ABS/CMBS
Assets measured at Fair Value
Available-for-sale fixed income	136,723	70,526
Fair value measured on recurring basis | Corporate Debt
Assets measured at Fair Value
Available-for-sale fixed income	668,679	519,022
Fair value measured on recurring basis | Municipal
Assets measured at Fair Value
Available-for-sale fixed income	320,088	636,165
Fair value measured on recurring basis | Equity securities
Assets measured at Fair Value
Equity securities, at fair value (cost - $220,373 in 2018 and $182,002 in 2017)	340,483	400,492
Fair value measured on recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets measured at Fair Value
Total assets at fair value	339,985	400,492
Fair value measured on recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity securities
Assets measured at Fair Value
Equity securities, at fair value (cost - $220,373 in 2018 and $182,002 in 2017)	339,985	400,492
Fair value measured on recurring basis | Significant Other Observable Inputs (Level 2)
Assets measured at Fair Value
Available-for-sale fixed income	1,760,515	1,672,239
Total assets at fair value	1,761,013	1,672,239
Fair value measured on recurring basis | Significant Other Observable Inputs (Level 2) | U.S. government
Assets measured at Fair Value
Available-for-sale fixed income	200,229	91,689
Fair value measured on recurring basis | Significant Other Observable Inputs (Level 2) | U.S. Agency
Assets measured at Fair Value
Available-for-sale fixed income	31,904	18,778
Fair value measured on recurring basis | Significant Other Observable Inputs (Level 2) | Non-U.S. govt. & agency
Assets measured at Fair Value
Available-for-sale fixed income	7,639	7,588
Fair value measured on recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed
Assets measured at Fair Value
Available-for-sale fixed income	395,253	328,471
Fair value measured on recurring basis | Significant Other Observable Inputs (Level 2) | ABS/CMBS
Assets measured at Fair Value
Available-for-sale fixed income	136,723	70,526
Fair value measured on recurring basis | Significant Other Observable Inputs (Level 2) | Corporate Debt
Assets measured at Fair Value
Available-for-sale fixed income	668,679	519,022
Fair value measured on recurring basis | Significant Other Observable Inputs (Level 2) | Municipal
Assets measured at Fair Value
Available-for-sale fixed income	320,088	$ 636,165
Fair value measured on recurring basis | Significant Other Observable Inputs (Level 2) | Equity securities
Assets measured at Fair Value
Equity securities, at fair value (cost - $220,373 in 2018 and $182,002 in 2017)	$ 498

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INVESTMENTS - Fixed Income Securities By Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Amortized cost of available-for-sale debt securities by contractual maturity
Due in one year or less	$ 41,319
Due after one year through five years	411,153
Due after five years through 10 years	615,061
Due after 10 years	168,716
Total amortized cost	1,776,465	$ 1,646,411
Fair value of available-for-sale debt securities by contractual maturity
Due in one year or less	41,333
Due after one year through five years	410,680
Due after five years through 10 years	608,115
Due after 10 years	168,412
Total fair value	1,760,515	$ 1,672,239
Mtge/ABS/CMBS
Amortized cost of available-for-sale debt securities by contractual maturity
Total amortized cost	540,216
Fair value of available-for-sale debt securities by contractual maturity
Total fair value	$ 531,975

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INVESTMENTS - Investments In Fixed Income Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Available-for-sale
Total amortized cost	$ 1,776,465	$ 1,646,411
Available-for-sale, at fair value (amortized cost - $1,776,465 in 2018 and $1,646,411 in 2017)	1,760,515	1,672,239
Total fixed income and equity securities
Net unrealized appreciation of available-for-sale fixed income securities	16,000	25,800
U.S. government
Available-for-sale
Total amortized cost	199,982	92,561
Available-for-sale, at fair value (amortized cost - $1,776,465 in 2018 and $1,646,411 in 2017)	200,229	91,689
Gross Unrealized Gains	1,232	23
Gross Unrealized Losses	(985)	(895)
U.S. Agency
Available-for-sale
Total amortized cost	31,716	18,541
Available-for-sale, at fair value (amortized cost - $1,776,465 in 2018 and $1,646,411 in 2017)	31,904	18,778
Gross Unrealized Gains	403	347
Gross Unrealized Losses	(215)	(110)
Non-U.S. govt. & agency
Available-for-sale
Total amortized cost	8,170	7,501
Available-for-sale, at fair value (amortized cost - $1,776,465 in 2018 and $1,646,411 in 2017)	7,639	7,588
Gross Unrealized Gains		143
Gross Unrealized Losses	(531)	(56)
Mtge/ABS/CMO
Available-for-sale
Gross Unrealized Losses	(10,300)
Mortgage-backed
Available-for-sale
Total amortized cost	402,992	329,129
Available-for-sale, at fair value (amortized cost - $1,776,465 in 2018 and $1,646,411 in 2017)	395,253	328,471
Gross Unrealized Gains	1,709	3,420
Gross Unrealized Losses	(9,448)	(4,078)
ABS/CMBS
Available-for-sale
Total amortized cost	137,224	70,405
Available-for-sale, at fair value (amortized cost - $1,776,465 in 2018 and $1,646,411 in 2017)	136,723	70,526
Gross Unrealized Gains	375	436
Gross Unrealized Losses	(876)	(315)
Corporate Debt
Available-for-sale
Total amortized cost	681,909	508,128
Available-for-sale, at fair value (amortized cost - $1,776,465 in 2018 and $1,646,411 in 2017)	668,679	519,022
Gross Unrealized Gains	2,894	12,575
Gross Unrealized Losses	(16,124)	(1,681)
Municipal
Available-for-sale
Total amortized cost	314,472	620,146
Available-for-sale, at fair value (amortized cost - $1,776,465 in 2018 and $1,646,411 in 2017)	320,088	636,165
Gross Unrealized Gains	6,926	17,272
Gross Unrealized Losses	$ (1,310)	(1,253)
General obligations to state and local governments Percentage	42.00%
Revenue based obligations percentage	58.00%
Percentage of securities of portfolio rated as AA or better	85.00%
Percentage of securities of portfolio rated as A or better	99.00%
Debt securities
Available-for-sale
Total amortized cost	$ 1,776,465	1,646,411
Available-for-sale, at fair value (amortized cost - $1,776,465 in 2018 and $1,646,411 in 2017)	1,760,515	1,672,239
Gross Unrealized Gains	13,539	34,216
Gross Unrealized Losses	(29,489)	$ (8,388)
Equity securities
Available-for-sale
Increase (decrease) in Gross Unrealized Losses	9,200
Total fixed income and equity securities
Gross Unrealized Losses	$ 10,100

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INVESTMENTS - Types of Debt and Equity Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt securities
Fair value
Less than 12 months	$ 397,157	$ 372,467
12 months and greater	584,017	254,270
Total Fair Value	981,174	626,737
Cost or amortized Cost
Less than 12 months	406,953	375,790
12 months and greater	603,710	259,335
Total Cost or Amortized Cost	1,010,663	635,125
Unrealized Loss
Less than 12 months	9,796	3,323
12 months and greater	19,693	5,065
Total Unrealized Loss	29,489	8,388
U.S. government
Fair value
Less than 12 months	7,249	58,009
12 months and greater	76,073	30,888
Total Fair Value	83,322	88,897
Cost or amortized Cost
Less than 12 months	7,270	58,443
12 months and greater	77,037	31,349
Total Cost or Amortized Cost	84,307	89,792
Unrealized Loss
Less than 12 months	21	434
12 months and greater	964	461
Total Unrealized Loss	985	895
U.S. Agency
Fair value
Less than 12 months		10,917
12 months and greater	8,843
Total Fair Value	8,843	10,917
Cost or amortized Cost
Less than 12 months		11,027
12 months and greater	9,058
Total Cost or Amortized Cost	9,058	11,027
Unrealized Loss
Less than 12 months		110
12 months and greater	215
Total Unrealized Loss	215	110
Non-U.S. govt. & agency
Fair value
Less than 12 months	5,432
12 months and greater	2,207	1,840
Total Fair Value	7,639	1,840
Cost or amortized Cost
Less than 12 months	5,571
12 months and greater	2,599	1,896
Total Cost or Amortized Cost	8,170	1,896
Unrealized Loss
Less than 12 months	139
12 months and greater	392	56
Total Unrealized Loss	531	56
Mortgage-backed
Fair value
Less than 12 months	25,345	122,130
12 months and greater	261,325	111,306
Total Fair Value	286,670	233,436
Cost or amortized Cost
Less than 12 months	25,486	123,559
12 months and greater	270,632	113,955
Total Cost or Amortized Cost	296,118	237,514
Unrealized Loss
Less than 12 months	141	1,429
12 months and greater	9,307	2,649
Total Unrealized Loss	9,448	4,078
ABS/CMBS
Fair value
Less than 12 months	46,918	23,406
12 months and greater	32,137	21,587
Total Fair Value	79,055	44,993
Cost or amortized Cost
Less than 12 months	47,146	23,491
12 months and greater	32,785	21,817
Total Cost or Amortized Cost	79,931	45,308
Unrealized Loss
Less than 12 months	228	85
12 months and greater	648	230
Total Unrealized Loss	876	315
Corporate Debt
Fair value
Less than 12 months	306,177	86,946
12 months and greater	147,751	28,600
Total Fair Value	453,928	115,546
Cost or amortized Cost
Less than 12 months	315,428	87,736
12 months and greater	154,624	29,491
Total Cost or Amortized Cost	470,052	117,227
Unrealized Loss
Less than 12 months	9,251	790
12 months and greater	6,873	891
Total Unrealized Loss	16,124	1,681
Municipal
Fair value
Less than 12 months	6,036	71,059
12 months and greater	55,681	60,049
Total Fair Value	61,717	131,108
Cost or amortized Cost
Less than 12 months	6,052	71,534
12 months and greater	56,975	60,827
Total Cost or Amortized Cost	63,027	132,361
Unrealized Loss
Less than 12 months	16	475
12 months and greater	1,294	778
Total Unrealized Loss	$ 1,310	$ 1,253

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INVESTMENTS - Portfolio Analysis (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) security position	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Securities in unrealized loss positions
Other-than-temporary impairment (OTTI) losses	$ 217	$ 2,559	$ 95
Fixed maturities and short-term investments on deposit with either regulatory authorities or banks	59,200
Unrealized gains (losses) recognized on equity securities still held at end of period	$ (28,700)	$ 47,200
Debt securities
Securities in unrealized loss positions
Number of unrealized loss positions | position	777
Number of securities in unrealized loss positions for 12 months or longer | security	302

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INVESTMENTS - Other Invested Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other invested assets
Other Investments	$ 51,542	$ 33,808
Qualified Affordable Housing Project Investments, Commitment	7,400
Investments pledged as collateral	$ 16,100
Investment in Federal Home Loan Bank Stock	us-gaap:AssetPledgedAsCollateralMember
Federal Home Loan Bank Borrowings, Fair Value Disclosure	$ 0
Investment In Low Income Housing Tax Credit Partnership Net Of Amortization Member
Other invested assets
Other Investments	20,300	15,500
Qualified Affordable Housing Project Investments, Commitment	7,400
Total tax benefit on investments in housing tax credit partnership	2,200	$ 2,400	$ 1,900
Investment in Private Funds
Other invested assets
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	$ 18,800

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POLICY ACQUISITION COSTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Policy acquisition costs deferred and amortized to income
Deferred policy acquisition costs (DAC), beginning of year	$ 77,716	$ 73,147	$ 69,829
Deferred:
Direct commissions	175,697	157,723	150,390
Premium taxes	12,654	11,651	11,759
Ceding commissions	(22,190)	(18,096)	(17,488)
Net deferred	166,161	151,278	144,661
Amortized	158,943	146,709	141,343
DAC/VOBA*, end of year	84,934	77,716	73,147
Policy acquisition costs:
Amortized to expense - DAC	158,943	146,709	141,343
Period costs:
Ceding commission - contingent	(2,241)	(3,575)	(1,524)
Other underwriting expenses	111,036	109,381	109,793
Total policy acquisition costs	$ 267,738	$ 252,515	$ 249,612

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DEBT (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 02, 2013	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 08, 2018
Debt
Outstanding long-term senior notes		$ 149,115	$ 148,928
Interest Paid		$ 7,300	$ 7,300	$ 7,300
Senior Notes
Debt
Average interest rate on debt (as a percent)		4.91%	4.91%	4.91%
Senior notes maturing September 15, 2023
Debt
Issue of senior notes by public debt offering	$ 150,000
Stated interest rate, payable semi-annually (as a percent)	4.875%
Proceeds from issuance of debt, net of discount and commission	$ 148,600
Estimated fair value of senior notes		$ 155,900
Line of credit
Debt
Borrowing capacity under revolving line of credit facility		50,000			$ 40,000
Maximum borrowing capacity conditional expansion		$ 75,000
Term of facility		2 years
Amount outstanding on this facility		$ 0	$ 0	$ 0

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REINSURANCE - Summary of Premiums and Losses (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
REINSURANCE
Maximum amount beyond which net loss on any individual risk is limited through the purchase of reinsurance	$ 3,000								$ 3,000
WRITTEN
Direct									934,913	$ 848,153	$ 844,430
Reinsurance assumed									48,303	37,159	30,434
Reinsurance ceded									(160,041)	(135,458)	(133,912)
Net									823,175	749,854	740,952
EARNED
Direct									896,234	835,118	835,294
Reinsurance assumed									41,926	32,521	27,886
Reinsurance ceded									(146,794)	(129,702)	(134,572)
Net amount	$ 204,002	$ 200,815	$ 196,522	$ 190,027	$ 188,296	$ 182,025	$ 184,331	$ 183,285	791,366	737,937	728,608
LOSSES AND SETTLEMENT EXPENSES INCURRED
Direct									560,421	486,986	405,873
Reinsurance assumed									20,376	16,072	13,196
Reinsurance ceded									(152,604)	(101,474)	(69,291)
Net									$ 428,193	$ 401,584	$ 349,778

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REINSURANCE - Summary of Reinsurers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net reinsurance balances recoverable
Percentage of reinsurance recoverables due from companies with financial strength ratings of "A" or better by A.M. Best and S&P rating services	93.00%
Reinsurer Exposure	$ 429,987
Ceded Premium Written	$ 160,041	$ 135,458	$ 133,912
Percent of Total Ceded Premium Written	100.00%
Reinsurance balances recoverable as a percentage of shareholder's equity, threshold for disclosure	2.00%
Amount of allowance for uncollectible amounts on paid recoverables	$ 16,100	15,900
Reinsurance balances recoverable on unpaid losses and settlement expenses, allowances for uncollectible amounts	$ 9,793	$ 10,014
Threshold period for including reinsurance receivables in the allowance for uncollectible amounts	1 year
Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	100.00%
Munich Re America / HSB | A.M. Best Rating, A+, Superior | S&P Rating, AA-, Very Strong
Net reinsurance balances recoverable
Reinsurer Exposure	$ 73,593
Ceded Premium Written	$ 24,479
Percent of Total Ceded Premium Written	15.30%
Munich Re America / HSB | A.M. Best Rating, A+, Superior | S&P Rating, AA-, Very Strong | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	17.10%
Swiss Re /Westport Ins. Corp. | A.M. Best Rating, A+, Superior | S&P Rating, AA-, Very Strong
Net reinsurance balances recoverable
Reinsurer Exposure	$ 35,095
Ceded Premium Written	$ 2,100
Percent of Total Ceded Premium Written	1.30%
Swiss Re /Westport Ins. Corp. | A.M. Best Rating, A+, Superior | S&P Rating, AA-, Very Strong | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	8.20%
Endurance Re | A.M. Best Rating, A+, Superior | S&P Rating, A+, Strong
Net reinsurance balances recoverable
Reinsurer Exposure	$ 28,754
Ceded Premium Written	$ 6,000
Percent of Total Ceded Premium Written	3.80%
Endurance Re | A.M. Best Rating, A+, Superior | S&P Rating, A+, Strong | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	6.70%
Aspen UK Ltd. | A.M. Best Rating, A, Excellent | S&P Rating, A, Strong
Net reinsurance balances recoverable
Reinsurer Exposure	$ 27,735
Ceded Premium Written	$ 7,906
Percent of Total Ceded Premium Written	4.90%
Aspen UK Ltd. | A.M. Best Rating, A, Excellent | S&P Rating, A, Strong | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	6.40%
Berkley Insurance Co. | A.M. Best Rating, A+, Superior | S&P Rating, A+, Strong
Net reinsurance balances recoverable
Reinsurer Exposure	$ 23,267
Ceded Premium Written	$ 6,335
Percent of Total Ceded Premium Written	4.00%
Berkley Insurance Co. | A.M. Best Rating, A+, Superior | S&P Rating, A+, Strong | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	5.40%
Hannover Ruckversicherung Member | A.M. Best Rating, A+, Superior | S&P Rating, AA-, Very Strong
Net reinsurance balances recoverable
Reinsurer Exposure	$ 22,629
Ceded Premium Written	$ 9,458
Percent of Total Ceded Premium Written	5.90%
Hannover Ruckversicherung Member | A.M. Best Rating, A+, Superior | S&P Rating, AA-, Very Strong | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	5.30%
Axis Re | A.M. Best Rating, A+, Superior | S&P Rating, A+, Strong
Net reinsurance balances recoverable
Reinsurer Exposure	$ 19,928
Ceded Premium Written	$ 6,424
Percent of Total Ceded Premium Written	4.00%
Axis Re | A.M. Best Rating, A+, Superior | S&P Rating, A+, Strong | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	4.60%
Transatlantic Re | A.M. Best Rating, A+, Superior | S&P Rating, A+, Strong
Net reinsurance balances recoverable
Reinsurer Exposure	$ 19,517
Ceded Premium Written	$ 7,911
Percent of Total Ceded Premium Written	4.90%
Transatlantic Re | A.M. Best Rating, A+, Superior | S&P Rating, A+, Strong | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	4.50%
Toa-Re | A.M. Best Rating, A, Excellent | S&P Rating, A+, Strong
Net reinsurance balances recoverable
Reinsurer Exposure	$ 18,480
Ceded Premium Written	$ 6,495
Percent of Total Ceded Premium Written	4.10%
Toa-Re | A.M. Best Rating, A, Excellent | S&P Rating, A+, Strong | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	4.30%
General Re | AM Best, A++ Rating | Standard & Poor's, AA+ Rating
Net reinsurance balances recoverable
Reinsurer Exposure	$ 18,168
Ceded Premium Written	$ 5,170
Percent of Total Ceded Premium Written	3.20%
General Re | AM Best, A++ Rating | Standard & Poor's, AA+ Rating | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	4.20%
Tokio Millennium Re | A.M. Best Rating, A+, Superior | S&P Rating, A+, Strong
Net reinsurance balances recoverable
Reinsurer Exposure	$ 17,044
Ceded Premium Written	$ 6,947
Percent of Total Ceded Premium Written	4.30%
Tokio Millennium Re | A.M. Best Rating, A+, Superior | S&P Rating, A+, Strong | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	4.00%
All other reinsurers
Net reinsurance balances recoverable
Reinsurer Exposure	$ 125,777
Ceded Premium Written	$ 70,816
Percent of Total Ceded Premium Written	44.30%
All other reinsurers | Reinsurer Concentration Risk [Member] | Reinsurance Recoverable [Member]
Net reinsurance balances recoverable
Percent of Total Net Reinsurer Exposure	29.30%

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HISTORICAL LOSS AND LAE DEVELOPMENT - Unpaid Losses and Settlement Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Unpaid losses and LAE at beginning of year:
Gross	$ 1,271,503	$ 1,139,337	$ 1,103,785
Ceded	(301,991)	(288,224)	(297,844)
Net	969,512	851,113	805,941
Increase (decrease) in incurred losses and LAE:
Current accident year	478,143	440,452	391,772
Prior accident years	(49,950)	(38,868)	(41,994)
Total incurred	428,193	401,584	349,778
Loss and LAE payments for claims incurred:
Current accident year	(76,050)	(73,392)	(70,540)
Prior accident year	(225,306)	(209,793)	(234,066)
Total paid	(301,356)	(283,185)	(304,606)
Net	1,096,349	969,512	851,113
Unpaid losses and LAE at year end
Gross	1,461,348	1,271,503	1,139,337
Ceded	(364,999)	(301,991)	(288,224)
Net	1,096,349	969,512	851,113
Casualty segment
Increase (decrease) in incurred losses and LAE:
Current accident year	363,015	323,141	292,308
Prior accident years	(33,252)	(17,462)	(32,401)
Property segment
Unpaid losses and LAE at beginning of year:
Ceded	(28,613)
Increase (decrease) in incurred losses and LAE:
Current accident year	94,635	97,161	76,143
Prior accident years	(10,813)	(12,134)	(4,793)
Unpaid losses and LAE at year end
Ceded	(50,495)	(28,613)
Surety segment
Unpaid losses and LAE at beginning of year:
Ceded	(7,079)
Increase (decrease) in incurred losses and LAE:
Current accident year	20,493	20,150	23,321
Prior accident years	(5,885)	(9,272)	$ (4,800)
Unpaid losses and LAE at year end
Ceded	$ (11,834)	$ (7,079)

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HISTORICAL LOSS AND LAE DEVELOPMENT - Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance (Details) $ in Thousands	Dec. 31, 2018 USD ($) claim	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)
Claims Development [Line Items]
Liabilities for losses and loss adjustment expenses, net of reinsurance	$ 1,096,349	$ 969,512
Casualty segment | Primary Occurrence
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	852,372
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	491,833
All outstanding liabilities before 2009, net of reinsurance	11,911
Liabilities for losses and loss adjustment expenses, net of reinsurance	372,450	325,182
Casualty segment | Primary Occurrence | Short-duration Insurance Contracts, Accident Year 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	81,445	80,350	$ 80,518	$ 81,138	$ 82,651	$ 86,888	$ 91,441	$ 99,765	$ 119,957	$ 85,476
Total IBNR	$ 2,202
Cumulative number of reported claims | claim	5,713
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 77,175	75,948	74,920	70,220	65,913	58,460	43,702	24,115	9,233	1,972
Casualty segment | Primary Occurrence | Short-duration Insurance Contracts, Accident Year 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	80,216	78,991	78,685	80,289	85,034	88,820	93,589	96,582	87,875
Total IBNR	$ 2,392
Cumulative number of reported claims | claim	6,117
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 73,318	69,514	66,399	61,929	55,992	44,051	29,312	13,025	2,587
Casualty segment | Primary Occurrence | Short-duration Insurance Contracts, Accident Year 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	82,248	82,193	83,181	86,342	89,622	94,145	98,428	91,139
Total IBNR	$ 3,180
Cumulative number of reported claims | claim	5,851
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 74,814	71,413	67,358	60,769	48,822	32,978	17,124	5,924
Casualty segment | Primary Occurrence | Short-duration Insurance Contracts, Accident Year 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	60,328	59,488	59,028	61,072	65,893	78,406	91,807
Total IBNR	$ 3,502
Cumulative number of reported claims | claim	5,163
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 51,611	47,970	43,276	33,822	23,889	14,539	5,897
Casualty segment | Primary Occurrence | Short-duration Insurance Contracts, Accident Year 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	59,556	60,162	60,329	62,882	67,297	80,823
Total IBNR	$ 6,538
Cumulative number of reported claims | claim	4,287
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 45,753	40,609	34,786	22,366	13,021	6,334
Casualty segment | Primary Occurrence | Short-duration Insurance Contracts, Accident Year 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	66,389	67,237	71,592	79,497	88,092
Total IBNR	$ 12,492
Cumulative number of reported claims | claim	4,242
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 47,343	40,270	29,545	18,771	11,436
Casualty segment | Primary Occurrence | Short-duration Insurance Contracts, Accident Year 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	78,675	83,579	84,975	94,835
Total IBNR	$ 21,351
Cumulative number of reported claims | claim	4,311
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 45,056	33,020	19,902	10,157
Casualty segment | Primary Occurrence | Short-duration Insurance Contracts, Accident Year 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	90,611	96,753	101,950
Total IBNR	$ 38,505
Cumulative number of reported claims | claim	4,148
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 35,764	24,186	10,142
Casualty segment | Primary Occurrence | Short-duration Insurance Contracts, Accident Year 2017
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	111,391	119,741
Total IBNR	$ 64,662
Cumulative number of reported claims | claim	4,119
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 25,933	13,154
Casualty segment | Primary Occurrence | Short-duration Insurance Contracts, Accident Year 2018
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	141,513
Total IBNR	$ 109,482
Cumulative number of reported claims | claim	3,773
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 15,066
Casualty segment | Excess Occurrence
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	341,691
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	149,926
All outstanding liabilities before 2009, net of reinsurance	17,918
Liabilities for losses and loss adjustment expenses, net of reinsurance	209,683	188,963
Casualty segment | Excess Occurrence | Short-duration Insurance Contracts, Accident Year 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	12,072	12,055	11,982	12,601	12,459	12,966	12,893	14,981	19,719	30,267
Total IBNR	$ 285
Cumulative number of reported claims | claim	567
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 11,787	11,786	11,780	11,776	10,808	11,001	9,460	6,585	3,947	956
Casualty segment | Excess Occurrence | Short-duration Insurance Contracts, Accident Year 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	20,527	20,530	21,018	22,044	20,044	18,932	22,111	24,244	29,314
Total IBNR	$ 369
Cumulative number of reported claims | claim	500
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 19,308	19,256	19,175	17,302	15,512	13,282	10,705	6,002	7
Casualty segment | Excess Occurrence | Short-duration Insurance Contracts, Accident Year 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	22,032	21,295	20,959	19,160	18,641	17,443	17,148	26,272
Total IBNR	$ 824
Cumulative number of reported claims | claim	581
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 20,214	17,769	16,494	10,772	8,793	6,981	5,145	2,169
Casualty segment | Excess Occurrence | Short-duration Insurance Contracts, Accident Year 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	23,020	22,433	21,231	21,885	21,021	21,558	29,042
Total IBNR	$ 1,386
Cumulative number of reported claims | claim	855
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 19,310	17,747	16,879	15,380	8,843	3,573	1,315
Casualty segment | Excess Occurrence | Short-duration Insurance Contracts, Accident Year 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	24,922	25,599	25,425	26,857	34,824	39,984
Total IBNR	$ 3,488
Cumulative number of reported claims | claim	933
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 17,956	16,967	14,545	10,967	5,701	1,060
Casualty segment | Excess Occurrence | Short-duration Insurance Contracts, Accident Year 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	33,372	32,274	35,119	39,095	50,889
Total IBNR	$ 8,832
Cumulative number of reported claims | claim	875
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 22,541	18,852	11,002	4,006	1,899
Casualty segment | Excess Occurrence | Short-duration Insurance Contracts, Accident Year 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	42,840	47,392	50,857	53,672
Total IBNR	$ 14,320
Cumulative number of reported claims | claim	669
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 23,184	19,571	10,127	2,048
Casualty segment | Excess Occurrence | Short-duration Insurance Contracts, Accident Year 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	37,676	49,385	56,341
Total IBNR	$ 25,675
Cumulative number of reported claims | claim	572
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 7,441	3,396	1,068
Casualty segment | Excess Occurrence | Short-duration Insurance Contracts, Accident Year 2017
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	55,868	62,863
Total IBNR	$ 43,891
Cumulative number of reported claims | claim	473
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 5,679	17
Casualty segment | Excess Occurrence | Short-duration Insurance Contracts, Accident Year 2018
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	69,362
Total IBNR	$ 63,524
Cumulative number of reported claims | claim	258
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 2,506
Casualty segment | Claims Made
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	381,356
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	177,788
All outstanding liabilities before 2009, net of reinsurance	933
Liabilities for losses and loss adjustment expenses, net of reinsurance	204,501	171,241
Casualty segment | Claims Made | Short-duration Insurance Contracts, Accident Year 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	16,056	11,827	12,053	12,810	13,117	11,710	13,562	9,687	13,703	12,918
Total IBNR	$ 398
Cumulative number of reported claims | claim	383
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 11,955	11,475	11,398	11,217	10,678	5,176	3,413	773	442	113
Casualty segment | Claims Made | Short-duration Insurance Contracts, Accident Year 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	8,735	9,024	9,175	10,581	11,689	10,429	9,776	15,556	13,690
Total IBNR	$ 219
Cumulative number of reported claims | claim	502
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 8,512	8,485	6,956	5,749	5,733	3,626	2,308	1,548	259
Casualty segment | Claims Made | Short-duration Insurance Contracts, Accident Year 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	11,506	7,852	7,720	8,510	10,619	12,260	17,454	17,416
Total IBNR	$ 640
Cumulative number of reported claims | claim	682
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 7,132	6,835	6,209	5,637	5,947	4,508	1,949	330
Casualty segment | Claims Made | Short-duration Insurance Contracts, Accident Year 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	17,569	17,612	18,022	19,590	20,727	26,144	27,576
Total IBNR	$ 1,251
Cumulative number of reported claims | claim	803
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 15,621	14,378	10,968	9,218	6,898	4,086	433
Casualty segment | Claims Made | Short-duration Insurance Contracts, Accident Year 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	37,959	38,473	40,288	44,054	41,488	40,095
Total IBNR	$ 3,751
Cumulative number of reported claims | claim	1,042
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 32,789	29,678	26,121	18,425	7,073	792
Casualty segment | Claims Made | Short-duration Insurance Contracts, Accident Year 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	51,554	55,350	58,152	55,386	53,929
Total IBNR	$ 7,271
Cumulative number of reported claims | claim	1,304
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 40,080	35,755	27,923	9,775	1,705
Casualty segment | Claims Made | Short-duration Insurance Contracts, Accident Year 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	39,906	42,206	47,831	55,006
Total IBNR	$ 10,559
Cumulative number of reported claims | claim	1,335
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 20,920	16,774	10,738	2,215
Casualty segment | Claims Made | Short-duration Insurance Contracts, Accident Year 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	69,493	67,760	59,992
Total IBNR	$ 23,817
Cumulative number of reported claims | claim	1,500
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 27,465	14,558	2,060
Casualty segment | Claims Made | Short-duration Insurance Contracts, Accident Year 2017
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	62,450	60,572
Total IBNR	$ 35,365
Cumulative number of reported claims | claim	1,627
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 11,350	2,455
Casualty segment | Claims Made | Short-duration Insurance Contracts, Accident Year 2018
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	66,128
Total IBNR	$ 50,820
Cumulative number of reported claims | claim	1,272
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 1,964
Casualty segment | Transportation
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	386,520
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	253,052
All outstanding liabilities before 2009, net of reinsurance	90
Liabilities for losses and loss adjustment expenses, net of reinsurance	133,558	119,704
Casualty segment | Transportation | Short-duration Insurance Contracts, Accident Year 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	21,911	21,926	21,969	21,958	22,340	22,613	22,929	23,174	23,366	26,349
Total IBNR	$ 19
Cumulative number of reported claims | claim	2,644
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 21,650	21,650	21,650	21,640	21,325	21,100	19,933	14,613	8,698	5,035
Casualty segment | Transportation | Short-duration Insurance Contracts, Accident Year 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	23,776	23,786	23,701	23,625	23,981	25,593	24,912	23,390	27,239
Total IBNR	$ 44
Cumulative number of reported claims | claim	2,843
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 23,556	23,533	23,488	23,063	21,792	20,045	15,475	10,116	6,296
Casualty segment | Transportation | Short-duration Insurance Contracts, Accident Year 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	25,614	25,167	25,376	25,431	25,272	25,747	23,479	22,957
Total IBNR	$ 52
Cumulative number of reported claims | claim	2,469
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 24,377	23,941	23,537	22,375	19,443	14,477	9,485	5,295
Casualty segment | Transportation | Short-duration Insurance Contracts, Accident Year 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	23,305	23,620	23,689	23,511	22,924	22,203	21,452
Total IBNR	$ 76
Cumulative number of reported claims | claim	2,284
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 22,730	22,566	20,931	17,318	12,394	8,533	4,466
Casualty segment | Transportation | Short-duration Insurance Contracts, Accident Year 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	39,974	38,811	37,673	32,989	32,853	32,742
Total IBNR	$ 350
Cumulative number of reported claims | claim	2,852
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 35,923	33,480	28,220	19,761	11,978	5,306
Casualty segment | Transportation | Short-duration Insurance Contracts, Accident Year 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	40,202	38,590	36,452	33,015	38,361
Total IBNR	$ 911
Cumulative number of reported claims | claim	3,099
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 33,190	27,457	19,676	13,933	7,125
Casualty segment | Transportation | Short-duration Insurance Contracts, Accident Year 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	46,395	47,021	46,258	38,561
Total IBNR	$ 3,824
Cumulative number of reported claims | claim	3,179
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 37,222	29,554	20,709	6,984
Casualty segment | Transportation | Short-duration Insurance Contracts, Accident Year 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	54,105	53,519	50,430
Total IBNR	$ 7,632
Cumulative number of reported claims | claim	3,920
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 30,354	18,354	8,923
Casualty segment | Transportation | Short-duration Insurance Contracts, Accident Year 2017
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	53,641	55,640
Total IBNR	$ 16,406
Cumulative number of reported claims | claim	3,597
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 17,070	7,979
Casualty segment | Transportation | Short-duration Insurance Contracts, Accident Year 2018
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	57,597
Total IBNR	$ 16,690
Cumulative number of reported claims | claim	3,154
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 6,980
Property segment
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	634,383
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	557,162
All outstanding liabilities before 2009, net of reinsurance	17
Liabilities for losses and loss adjustment expenses, net of reinsurance	77,238	68,867
Property segment | Short-duration Insurance Contracts, Accident Year 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	48,925	49,323	49,267	48,707	48,857	48,969	49,534	52,286	55,821	59,975
Total IBNR	$ 13
Cumulative number of reported claims | claim	2,630
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 48,898	49,173	49,051	48,329	48,297	48,031	46,004	43,758	40,775	25,464
Property segment | Short-duration Insurance Contracts, Accident Year 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	52,903	52,952	52,964	52,927	54,153	53,937	55,427	59,145	63,194
Total IBNR	$ 29
Cumulative number of reported claims | claim	2,851
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 52,855	52,851	52,719	52,426	52,729	50,055	47,743	43,091	25,274
Property segment | Short-duration Insurance Contracts, Accident Year 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	62,875	62,456	62,570	62,770	63,724	64,976	66,924	70,246
Total IBNR	$ 142
Cumulative number of reported claims | claim	3,028
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 62,729	61,834	61,428	60,272	59,099	55,778	48,756	27,676
Property segment | Short-duration Insurance Contracts, Accident Year 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	78,161	78,125	79,175	77,569	79,181	80,155	85,485
Total IBNR	$ 167
Cumulative number of reported claims | claim	2,640
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 77,159	76,152	75,640	73,705	72,057	66,509	39,074
Property segment | Short-duration Insurance Contracts, Accident Year 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	61,834	61,914	62,114	62,173	62,090	63,864
Total IBNR	$ 273
Cumulative number of reported claims | claim	2,995
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 61,195	60,520	59,259	57,407	50,840	32,208
Property segment | Short-duration Insurance Contracts, Accident Year 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	49,217	48,761	48,801	49,441	56,587
Total IBNR	$ 315
Cumulative number of reported claims | claim	4,560
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 47,799	46,528	46,148	43,380	30,550
Property segment | Short-duration Insurance Contracts, Accident Year 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	52,720	53,958	56,103	59,863
Total IBNR	$ 680
Cumulative number of reported claims | claim	4,076
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 51,290	50,197	49,348	32,184
Property segment | Short-duration Insurance Contracts, Accident Year 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	55,384	55,594	62,900
Total IBNR	$ 2,093
Cumulative number of reported claims | claim	3,369
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 51,371	46,921	33,134
Property segment | Short-duration Insurance Contracts, Accident Year 2017
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	83,273	90,803
Total IBNR	$ 9,346
Cumulative number of reported claims | claim	2,873
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 66,818	41,314
Property segment | Short-duration Insurance Contracts, Accident Year 2018
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	89,091
Total IBNR	$ 23,235
Cumulative number of reported claims | claim	2,030
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 37,048
Surety segment
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	91,606
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	65,361
All outstanding liabilities before 2009, net of reinsurance	1,992
Liabilities for losses and loss adjustment expenses, net of reinsurance	28,237	23,375
Surety segment | Short-duration Insurance Contracts, Accident Year 2009
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	4,935	4,860	4,923	4,288	4,551	4,146	4,246	4,708	4,896	15,474
Total IBNR	$ 2
Cumulative number of reported claims | claim	1,665
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 4,933	4,849	3,908	3,919	4,336	3,490	2,493	2,382	1,914	$ 892
Surety segment | Short-duration Insurance Contracts, Accident Year 2010
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	6,580	6,244	7,645	7,136	6,810	7,076	6,630	8,205	13,961
Total IBNR	$ 14
Cumulative number of reported claims | claim	1,540
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 6,637	6,663	7,822	7,285	7,151	7,092	5,702	3,205	$ 1,724
Surety segment | Short-duration Insurance Contracts, Accident Year 2011
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	18,281	16,480	16,695	16,766	17,321	17,792	17,832	13,842
Total IBNR	$ 13
Cumulative number of reported claims | claim	1,674
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 17,013	17,086	17,086	17,212	17,403	17,151	16,932	$ 8,160
Surety segment | Short-duration Insurance Contracts, Accident Year 2012
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	7,099	7,471	7,867	8,180	8,667	11,452	17,114
Total IBNR	$ 22
Cumulative number of reported claims | claim	1,469
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 7,065	7,406	7,536	7,416	6,726	6,680	$ 1,883
Surety segment | Short-duration Insurance Contracts, Accident Year 2013
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	5,231	5,271	5,399	6,170	7,516	16,080
Total IBNR	$ 50
Cumulative number of reported claims | claim	1,400
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 5,150	5,098	4,911	4,701	2,856	$ 1,116
Surety segment | Short-duration Insurance Contracts, Accident Year 2014
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	4,267	4,427	5,225	8,106	16,450
Total IBNR	$ 88
Cumulative number of reported claims | claim	1,337
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 4,131	4,059	4,166	4,283	$ 722
Surety segment | Short-duration Insurance Contracts, Accident Year 2015
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	10,456	11,113	12,957	16,958
Total IBNR	$ 824
Cumulative number of reported claims | claim	1,201
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 9,436	7,695	6,719	$ 3,192
Surety segment | Short-duration Insurance Contracts, Accident Year 2016
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	9,351	11,062	18,928
Total IBNR	$ 1,543
Cumulative number of reported claims | claim	1,307
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 6,299	5,817	$ 3,087
Surety segment | Short-duration Insurance Contracts, Accident Year 2017
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	8,641	16,127
Total IBNR	$ 3,630
Cumulative number of reported claims | claim	1,409
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 2,862	$ 979
Surety segment | Short-duration Insurance Contracts, Accident Year 2018
Claims Development [Line Items]
Incurred losses and loss adjustment expenses, net of reinsurance	16,765
Total IBNR	$ 14,535
Cumulative number of reported claims | claim	654
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance	$ 1,835

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HISTORICAL LOSS AND LAE DEVELOPMENT - Cumulative Paid Loss and Loss Adjustment Expenses, Net of Reinsurance (Details)	Dec. 31, 2018
Property segment
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Average annual percentage payout of incurred losses by age, Year 1	52.00%
Average annual percentage payout of incurred losses by age, Year 2	30.90%
Average annual percentage payout of incurred losses by age, Year 3	7.40%
Average annual percentage payout of incurred losses by age, Year 4	3.20%
Average annual percentage payout of incurred losses by age, Year 5	3.00%
Average annual percentage payout of incurred losses by age, Year 6	0.70%
Average annual percentage payout of incurred losses by age, Year 7	0.60%
Average annual percentage payout of incurred losses by age, Year 8	1.00%
Average annual percentage payout of incurred losses by age, Year 9	0.10%
Average annual percentage payout of incurred losses by age, Year 10	(0.60%)
Surety segment
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Average annual percentage payout of incurred losses by age, Year 1	24.00%
Average annual percentage payout of incurred losses by age, Year 2	40.00%
Average annual percentage payout of incurred losses by age, Year 3	12.00%
Average annual percentage payout of incurred losses by age, Year 4	7.50%
Average annual percentage payout of incurred losses by age, Year 5	4.50%
Average annual percentage payout of incurred losses by age, Year 6	3.50%
Average annual percentage payout of incurred losses by age, Year 7	(1.30%)
Average annual percentage payout of incurred losses by age, Year 8	(6.10%)
Average annual percentage payout of incurred losses by age, Year 9	9.30%
Average annual percentage payout of incurred losses by age, Year 10	1.70%
Primary Occurrence | Casualty segment
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Average annual percentage payout of incurred losses by age, Year 1	9.70%
Average annual percentage payout of incurred losses by age, Year 2	12.40%
Average annual percentage payout of incurred losses by age, Year 3	16.80%
Average annual percentage payout of incurred losses by age, Year 4	18.60%
Average annual percentage payout of incurred losses by age, Year 5	13.90%
Average annual percentage payout of incurred losses by age, Year 6	8.20%
Average annual percentage payout of incurred losses by age, Year 7	5.50%
Average annual percentage payout of incurred losses by age, Year 8	4.60%
Average annual percentage payout of incurred losses by age, Year 9	3.00%
Average annual percentage payout of incurred losses by age, Year 10	1.50%
Excess Occurrence | Casualty segment
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Average annual percentage payout of incurred losses by age, Year 1	4.50%
Average annual percentage payout of incurred losses by age, Year 2	15.30%
Average annual percentage payout of incurred losses by age, Year 3	18.90%
Average annual percentage payout of incurred losses by age, Year 4	17.00%
Average annual percentage payout of incurred losses by age, Year 5	10.00%
Average annual percentage payout of incurred losses by age, Year 6	8.20%
Average annual percentage payout of incurred losses by age, Year 7	7.40%
Average annual percentage payout of incurred losses by age, Year 8	3.80%
Average annual percentage payout of incurred losses by age, Year 9	0.20%
Average annual percentage payout of incurred losses by age, Year 10	0.00%
Claims Made | Casualty segment
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Average annual percentage payout of incurred losses by age, Year 1	3.00%
Average annual percentage payout of incurred losses by age, Year 2	15.30%
Average annual percentage payout of incurred losses by age, Year 3	18.50%
Average annual percentage payout of incurred losses by age, Year 4	14.70%
Average annual percentage payout of incurred losses by age, Year 5	10.00%
Average annual percentage payout of incurred losses by age, Year 6	13.40%
Average annual percentage payout of incurred losses by age, Year 7	7.40%
Average annual percentage payout of incurred losses by age, Year 8	7.10%
Average annual percentage payout of incurred losses by age, Year 9	0.40%
Average annual percentage payout of incurred losses by age, Year 10	3.00%
Transportation | Casualty segment
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Average annual percentage payout of incurred losses by age, Year 1	17.90%
Average annual percentage payout of incurred losses by age, Year 2	18.20%
Average annual percentage payout of incurred losses by age, Year 3	20.10%
Average annual percentage payout of incurred losses by age, Year 4	20.20%
Average annual percentage payout of incurred losses by age, Year 5	11.20%
Average annual percentage payout of incurred losses by age, Year 6	4.80%
Average annual percentage payout of incurred losses by age, Year 7	1.40%
Average annual percentage payout of incurred losses by age, Year 8	0.60%
Average annual percentage payout of incurred losses by age, Year 9	0.00%
Average annual percentage payout of incurred losses by age, Year 10	0.00%

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HISTORICAL LOSS AND LAE DEVELOPMENT - Reconciliation of Incurred and Paid Loss Development to the Liability for Unpaid Losses and Settlement Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Net outstanding liabilities	$ 1,461,348	$ 1,271,503	$ 1,139,337	$ 1,103,785
Unallocated loss adjustment expenses	50,891	48,844
Other	9,998	13,322
Liabilities for losses and loss adjustment expenses, net of reinsurance	1,096,349	969,512
Allowance for uncollectible reinsurance balances recoverable on unpaid losses and settlement expenses	9,793	10,014
Other	980	1,729
Reinsurance recoverable on unpaid claims	364,999	301,991	$ 288,224	$ 297,844
Total gross liability for unpaid loss and settlement expenses	1,461,348	1,271,503
Casualty segment | Primary Occurrence
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Liabilities for losses and loss adjustment expenses, net of reinsurance	372,450	325,182
Reinsurance recoverable on unpaid claims	34,742	36,158
Casualty segment | Excess Occurrence
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Liabilities for losses and loss adjustment expenses, net of reinsurance	209,683	188,963
Reinsurance recoverable on unpaid claims	81,072	74,400
Casualty segment | Claims Made
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Liabilities for losses and loss adjustment expenses, net of reinsurance	204,501	171,241
Reinsurance recoverable on unpaid claims	144,921	117,436
Casualty segment | Transportation
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Liabilities for losses and loss adjustment expenses, net of reinsurance	133,558	119,704
Reinsurance recoverable on unpaid claims	50,748	46,590
Property segment
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Liabilities for losses and loss adjustment expenses, net of reinsurance	77,238	68,867
Reinsurance recoverable on unpaid claims	50,495	28,613
Surety segment
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Liabilities for losses and loss adjustment expenses, net of reinsurance	28,237	23,375
Reinsurance recoverable on unpaid claims	$ 11,834	$ 7,079

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HISTORICAL LOSS AND LAE DEVELOPMENT - Reserve Development (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	$ (49,950)	$ (38,868)	$ (41,994)
Casualty segment
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(33,252)	(17,462)	(32,401)
Property segment
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(10,813)	(12,134)	(4,793)
Property segment | Marine
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(5,000)	(6,800)	(2,100)
Property segment | Assumed property
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(2,800)		(2,500)
Property segment | Commercial property
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(2,000)	(3,200)
Property segment | Other direct property products
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development			200
Surety segment
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(5,885)	(9,272)	(4,800)
Surety segment | Commercial surety product
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(4,600)	(3,500)	(1,700)
Surety segment | Contract surety product
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development		(4,400)	(100)
Surety segment | Energy surety product
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(1,700)	(1,500)	(1,900)
Surety segment | Miscellaneous Surety Product
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	800	100	(1,100)
Primary Occurrence | Casualty segment
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(15,600)
Primary Occurrence | Casualty segment | General liability
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(6,700)	(4,600)	(17,600)
Primary Occurrence | Casualty segment | P&C Package
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development		(3,200)	(6,200)
Excess Occurrence | Casualty segment
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(21,400)
Excess Occurrence | Casualty segment | Commercial products
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(10,800)	(9,900)	(13,800)
Excess Occurrence | Casualty segment | Personal umbrella
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development		(1,100)	4,900
Claims Made | Casualty segment
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	(3,900)
Claims Made | Casualty segment | Executive products
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development		(4,400)	(14,700)
Claims Made | Casualty segment | Medical professional liability
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development		3,700
Claims Made | Casualty segment | Miscellaneous Professional Liability Member
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development			(800)
Transportation | Casualty segment
(Favorable)/unfavorable reserve development
(Favorable)/unfavorable reserve development	$ (500)	$ 7,400	$ 15,400

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HISTORICAL LOSS AND LAE DEVELOPMENT - Environmental, Asbestos and Mass Tort Exposures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
UNPAID LOSSES AND LAE AT END OF YEAR
Gross	$ 1,461,348	$ 1,271,503	$ 1,139,337	$ 1,103,785
Net	$ 1,096,349	969,512	851,113	$ 805,941
Minimum period for which product lines related to majority of reserves have been in runoff	20 years
Asbestos and environmental exposures
LOSS AND LAE PAYMENTS (CUMULATIVE)
Gross	$ 136,043	132,883	130,358
Ceded	(68,638)	(67,507)	(66,644)
Net	67,405	65,376	63,714
UNPAID LOSSES AND LAE AT END OF YEAR
Gross	24,262	28,042	28,815
Ceded	(5,373)	(5,715)	(4,987)
Net	$ 18,889	$ 22,327	$ 23,828

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INCOME TAXES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Tax discounting of claim reserves	$ 18,327,000	$ 20,020,000
Unearned premium offset	17,864,000	16,528,000
Deferred compensation	2,700,000	1,435,000
Stock option expense	2,702,000	2,283,000
Other	616,000	578,000
Deferred tax assets before allowance	42,209,000	40,844,000
Total deferred tax assets	42,209,000	40,844,000
Deferred tax liabilities:
Net unrealized appreciation of securities	22,177,000	51,448,000
Deferred policy acquisition costs	17,836,000	16,320,000
Deferred Tax Liabilities Discounting Of Unpaid Losses TCJA Offset	5,203,000	9,466,000
Book/tax depreciation	3,133,000	3,159,000
Intangible assets	1,711,000	584,000
Undistributed earnings of unconsolidated investees	15,811,000	13,431,000
Other	576,000	204,000
Total deferred tax liabilities	66,447,000	94,612,000
Net deferred tax liability	$ (24,238,000)	$ (53,768,000)
U.S. federal tax rate (as a percent)	21.00%	35.00%	35.00%
Increase (reduction) in taxes resulting from:
Provision for income taxes at the statutory rate of 21% in 2018 and 35% in 2017	$ 14,192,000	$ 29,606,000	$ 54,979,000
Enactment Of Tax Cuts And Jobs Act	(2,268,000)	(32,821,000)
Excess tax benefit on share-based compensation	(4,533,000)	(5,798,000)
Dividends received deduction	(775,000)	(2,025,000)	(2,216,000)
ESOP dividends paid deduction	(1,184,000)	(2,905,000)	(3,302,000)
Tax-exempt interest income	(1,795,000)	(4,671,000)	(4,263,000)
Unconsolidated investee dividends		(1,351,000)	(2,772,000)
Other items, net	(235,000)	(474,000)	(264,000)
Income tax expense (benefit)	$ 3,402,000	$ (20,439,000)	$ 42,162,000
Reconciliation of income tax expense rate to the U.S. federal tax rate
U.S. federal tax rate (as a percent)	21.00%	35.00%	35.00%
Enactment of Tax Cuts and Jobs Act (TCJA)	(3.40%)	(38.80%)
Excess tax benefit on share-based compensation	(6.70%)	(6.90%)
Effective rate reduction due to dividend received (as a percent)	(1.10%)	(2.40%)	(1.40%)
Effective rate reduction due to dividend paid to ESOP (as a percent)	(1.80%)	(3.40%)	(2.10%)
Effective rate reduction due to tax exempt interest income (as a percent)	(2.70%)	(5.50%)	(2.70%)
Effective rate reduction due to unconsolidated investee dividends		(1.60%)	(1.80%)
Effective rate reduction due to other items, net (as a percent)	(0.30%)	(0.60%)	(0.20%)
Effective Income Tax Rate Reconciliation, Percent, Total	5.00%	(24.20%)	26.80%
Income tax expense (benefit)	$ 3,402,000	$ (20,439,000)	$ 42,162,000
Effective tax rates (as a percent)	5.00%	(24.20%)	26.80%
Capital gains rate (as a percent)	21.00%
Dividend received	$ 9,900,000	$ 0	$ 9,900,000
Lower tax rate (as a percent)	7.40%		7.00%
Effective rate reduction due to dividends paid to ESOP (as a percent)	1.80%	3.40%	2.10%
Expected effective tax rate when deferred items reverse in future years (as a percent)	21.00%
Federal and state income taxes paid	$ 16,400,000	$ 10,400,000	$ 26,900,000

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EMPLOYEE BENEFITS - Stock Ownership and Incentive Plans (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Employee Stock Ownership, 401(K) And Deferred Compensation Plan
Annual expenses for incentive plans	$ 11.9	$ 19.7	$ 19.2
ESOP and 401(k) Plans
Employee Stock Ownership, 401(K) And Deferred Compensation Plan
Vesting period of profit sharing contributions	3 years
Expenses recognized	$ 8.8	$ 12.5	$ 11.7
Employee Stock Ownership Plan (ESOP)
Employee Stock Ownership, 401(K) And Deferred Compensation Plan
Shares purchased under defined contribution plan	98,717	124,186	112,608
Average price of shares purchased (in dollars per share)	$ 62.80	$ 58.02	$ 64.20
Aggregate price of shares purchased	$ 6.2	$ 7.2	$ 7.2
Shares held by the ESOP	2,985,390
Employee 401(k) Plans
Employee Stock Ownership, 401(K) And Deferred Compensation Plan
Employer contribution as a percent of eligible compensation	3.00%
Vesting percentage in basic and voluntary contributions	100.00%
Deferred compensation plan
Employee Stock Ownership, 401(K) And Deferred Compensation Plan
Shares purchased under defined contribution plan	7,049	7,464	6,702
Average price of shares purchased (in dollars per share)	$ 68.36	$ 58.66	$ 61.61
Aggregate price of shares purchased	$ 0.5	$ 0.4	$ 0.4
Assets held under trust	$ 36.2

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EMPLOYEE BENEFITS - Stock Options and Stock Plans (Details) - USD ($)	1 Months Ended			12 Months Ended			24 Months Ended	44 Months Ended	60 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2018	May 06, 2015	May 07, 2015
Weighted Number of Options Outstanding
Outstanding options at the beginning of the period (in shares)				2,257,015	2,207,110	2,582,220	2,207,110
Options granted (in shares)	330,750	384,750	345,750	432,000	482,375	440,750
Options exercised (in shares)				(705,785)	(390,870)	(756,380)
Options canceled/forfeited (in shares)				(18,350)	(41,600)	(59,480)
Outstanding options at the end of the period (in shares)				1,964,880	2,257,015	2,207,110	1,964,880	1,964,880
Exercisable options at the end of the period (in shares)				724,730	975,055	862,605	724,730	724,730
Weighted Average Exercise Price
Outstanding options at the beginning of the period (in dollars per share)				$ 46.80	$ 40.90	$ 32.42	$ 40.90
Options granted (in dollars per share)				64.91	57.12	63.54
Options exercised (in dollars per share)				36.81	26.07	24.87
Options canceled/forfeited (in dollars per share)				60.84	48.30	44.39
Outstanding options at the end of the period (in dollars per share)				54.24	46.80	40.90	54.24	$ 54.24
Exercisable options at the end of the period (in dollars per share)				$ 46.62	$ 38.66	$ 31.23	$ 46.62	$ 46.62
Weighted Average Remaining Contractual Life
Weighted-average remaining contractual term of options outstanding				5 years 3 months	4 years 10 months 17 days	4 years 11 months 5 days
Weighted-average remaining contractual term of exercisable options				3 years 9 months 15 days	3 years 3 months	3 years 3 months 7 days
Aggregate Intrinsic Value
Options exercised (in dollars)				$ 24,304,000	$ 12,779,000	$ 31,328,000
Outstanding options at the end of the period (in dollars)				29,317,000	32,620,000	49,531,000	$ 29,317,000	$ 29,317,000
Exercisable options at the end of the period (in dollars)				$ 16,212,000	$ 21,780,000	$ 27,523,000	16,212,000	16,212,000
Weighted-average fair value of options granted (in dollars per share)	$ 10.31	$ 7.91	$ 11.42	$ 10.58	$ 8.00	$ 11.38
Stock-based compensation expenses (in dollars)				$ 4,500,000	$ 4,400,000	$ 4,100,000
Income tax benefit from stock-based compensation (in dollars)				900,000	1,500,000	1,400,000
Unrecognized stock-based compensation expense (in dollars)				$ 5,600,000	$ 5,700,000	$ 6,200,000	$ 5,600,000	$ 5,600,000
Weighted average grant date assumptions and weighted average fair value
Weighted-average fair value of grants (in dollars per share)	$ 10.31	$ 7.91	$ 11.42	$ 10.58	$ 8.00	$ 11.38
Risk-free interest rates (as a percent)				2.72%	1.90%	1.21%
Dividend yield (as a percent)				2.98%	3.60%	1.61%
Expected volatility (as a percent)				22.87%	22.95%	23.06%
Expected option life				5 years 26 days	5 years 18 days	5 years 15 days
Period for which annualized dividends is considered to calculate dividend yield				5 years
RLI Corp. Long-Term Incentive Plan (LTIP) and Omnibus Stock Plan
Stock options and stock plans
Award vesting period				5 years
Term of options				8 years
Age and period of service of the participant to be eligible for retirement				75 years
RLI Corp. Long-Term Incentive Plan (2010 LTIP)
Stock options and stock plans
Shares authorized for grant										4,000,000
Stock options granted to date (in shares)									2,878,000
RLI Corp. Long-Term Incentive Plan (2015 LTIP)
Stock options and stock plans
Shares authorized for grant				4,000,000			4,000,000	4,000,000
Stock options granted to date (in shares)								1,903,630
Weighted Number of Options Outstanding
Options granted (in shares)				455,055
Restricted Stock Units (RSUs) [Member] | Outside director
Stock options and stock plans
Award vesting period				1 year
Aggregate Intrinsic Value
Stock-based compensation expenses (in dollars)				$ 300,000
Unrecognized stock-based compensation expense (in dollars)				$ 200,000			$ 200,000	$ 200,000
Weighted average grant date assumptions and weighted average fair value
RSUs Granted				8,430
RSUs Outstanding				8,629			8,629	8,629
Grant date fair value of RSUs				$ 50,000
Restricted Stock Units (RSUs) [Member] | RLI Corp. Long-Term Incentive Plan (2015 LTIP)
Stock options and stock plans
Award vesting period				3 years
Age and period of service of the participant to be eligible for retirement				75 years
Aggregate Intrinsic Value
Stock-based compensation expenses (in dollars)				$ 600,000	$ 400,000
Unrecognized stock-based compensation expense (in dollars)				$ 700,000			$ 700,000	$ 700,000
Weighted average grant date assumptions and weighted average fair value
RSUs Granted				14,625			30,075
RSUs Outstanding				30,567			30,567	30,567

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STATUTORY INFORMATION AND DIVIDEND RESTRICTIONS (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) company	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Statutory information and dividend restrictions
Number of insurance companies | company	3
Remaining unrestricted equity, liquid assets	$ 63,100,000
Equity	806,842,000	$ 853,598,000	$ 823,572,000	$ 823,469,000
Fair Value of Investment in Affiliate Included in Statutory Surplus	132,800,000	106,900,000	104,400,000
Cost Basis of Investment in Affiliate Included in Statutory Surplus	64,600,000
Insurance subsidiaries
Selected information for insurance subsidiaries
Consolidated net income, statutory basis	135,791,000	72,889,000	128,165,000
Consolidated surplus, statutory basis	829,775,000	864,554,000	859,976,000
RLI Ins.
Statutory information and dividend restrictions
Authorized control level RBC	170,900,000	157,700,000	127,000,000
Selected information for insurance subsidiaries
Consolidated surplus, statutory basis	$ 829,800,000	864,600,000	860,000,000
Dividend restriction as percentage of policyholder surplus	10.00%
Payments of Ordinary Dividends	$ 13,000,000	107,000,000	123,600,000
Extraordinary dividend paid after seeking and receiving approval from the Illinois regulatory authorities	$ 110,000,000	$ 0	$ 0

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COMMITMENTS AND CONTINGENT LIABILITIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Minimum future rental payments under noncancellable leases
2019	$ 5,911
2020	6,019
2021	5,924
2022	5,884
2023	4,459
2024-2035	3,968
Total minimum future rental payments	32,165
Expense associated with operating leases	6,900	$ 6,800	$ 6,400
Other Assets [Abstract]
Qualified Affordable Housing Project Investments, Commitment	7,400
Loss Contingency, Information about Litigation Matters [Abstract]
Loss Contingency, Damages Sought, Value	21,700
Investment In Low Income Housing Tax Credit Partnership Net Of Amortization Member
Other Assets [Abstract]
Qualified Affordable Housing Project Investments, Commitment	7,400
Investment in Private Funds
Other Assets [Abstract]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	$ 18,800

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OPERATING SEGMENT INFORMATION - Summary of Segments (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
REVENUES
Net premiums earned	$ 204,002	$ 200,815	$ 196,522	$ 190,027	$ 188,296	$ 182,025	$ 184,331	$ 183,285	$ 791,366	$ 737,937	$ 728,608
Net investment income	16,962	16,314	14,577	14,232	14,446	14,187	13,238	13,005	62,085	54,876	53,075
Net realized gains	15,507	18,647	20,849	8,404	5,111	35	(1,359)	624	63,407	4,411	34,645
Net unrealized losses on equity securities	(64,200)	4,848	(12,611)	(26,772)					(98,735)
Consolidated revenue									818,123	797,224	816,328
INSURANCE EXPENSES
Loss and settlement expenses									428,193	401,584	349,778
Policy acquisition costs									267,738	252,515	249,612
Other insurance expenses									53,803	56,994	53,093
Insurance expenses									749,734	711,093	652,483
NET EARNINGS
Net underwriting income									41,632	26,844	76,125
Net investment income	16,962	16,314	14,577	14,232	14,446	14,187	13,238	13,005	62,085	54,876	53,075
Net realized gains	15,507	18,647	20,849	8,404	5,111	35	(1,359)	624	63,407	4,411	34,645
Net unrealized losses on equity securities	(64,200)	4,848	(12,611)	(26,772)					(98,735)
General corporate expense and interest on debt									(16,864)	(18,766)	(17,596)
Equity in earnings of unconsolidated investees									16,056	17,224	10,833
Earnings before income taxes	(32,708)	46,349	39,562	14,378	24,972	(862)	34,036	26,443	67,581	84,589	157,082
Income tax expense									3,402	(20,439)	42,162
Net earnings	$ (20,660)	$ 39,372	$ 33,251	$ 12,216	$ 57,258	$ 1,734	$ 26,208	$ 19,828	$ 64,179	105,028	114,920
Maui Jim Inc.
Segment reporting information
Ownership percentage	40.00%								40.00%
Prime Holdings Insurance Services, Inc. (Prime)
Segment reporting information
Ownership percentage	23.00%								23.00%
Casualty segment
REVENUES
Net premiums earned									$ 523,472	478,603	454,843
INSURANCE EXPENSES
Loss and settlement expenses									329,763	305,679	259,907
Policy acquisition costs									151,007	136,135	128,566
Other insurance expenses									31,562	32,885	30,040
NET EARNINGS
Net underwriting income									11,140	3,904	36,329
Property segment
REVENUES
Net premiums earned									149,261	138,346	152,167
INSURANCE EXPENSES
Loss and settlement expenses									83,822	85,027	71,350
Policy acquisition costs									51,830	51,070	54,167
Other insurance expenses									12,725	14,108	13,819
NET EARNINGS
Net underwriting income									884	(11,859)	12,832
Surety segment
REVENUES
Net premiums earned									118,633	120,988	121,598
INSURANCE EXPENSES
Loss and settlement expenses									14,608	10,878	18,521
Policy acquisition costs									64,901	65,310	66,879
Other insurance expenses									9,516	10,001	9,234
NET EARNINGS
Net underwriting income									$ 29,608	$ 34,799	$ 26,964

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OPERATING SEGMENT INFORMATION - Revenue by Product (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue by major product
Net premiums earned	$ 204,002	$ 200,815	$ 196,522	$ 190,027	$ 188,296	$ 182,025	$ 184,331	$ 183,285	$ 791,366	$ 737,937	$ 728,608
Casualty segment
Revenue by major product
Net premiums earned									523,472	478,603	454,843
Casualty segment | Commercial excess and personal umbrella
Revenue by major product
Net premiums earned									124,350	115,543	111,079
Casualty segment | General liability
Revenue by major product
Net premiums earned									93,928	90,283	86,853
Casualty segment | Transportation
Revenue by major product
Net premiums earned									81,053	78,061	81,402
Casualty segment | Professional services
Revenue by major product
Net premiums earned									79,951	78,508	75,872
Casualty segment | Small commercial
Revenue by major product
Net premiums earned									51,519	49,601	45,660
Casualty segment | Executive products
Revenue by major product
Net premiums earned									21,326	18,086	18,755
Casualty segment | Medical professional liability
Revenue by major product
Net premiums earned									16,042	17,072	17,449
Casualty segment | Other casualty
Revenue by major product
Net premiums earned									55,303	31,449	17,773
Property segment
Revenue by major product
Net premiums earned									149,261	138,346	152,167
Property segment | Commercial property
Revenue by major product
Net premiums earned									71,501	63,117	68,165
Property segment | Marine
Revenue by major product
Net premiums earned									59,795	50,931	48,301
Property segment | Specialty Personal
Revenue by major product
Net premiums earned									16,901	20,793	24,981
Property segment | Other property
Revenue by major product
Net premiums earned									1,064	3,505	10,720
Surety segment
Revenue by major product
Net premiums earned									118,633	120,988	121,598
Surety segment | Miscellaneous
Revenue by major product
Net premiums earned									46,968	47,237	46,235
Surety segment | Contract
Revenue by major product
Net premiums earned									28,196	28,573	28,240
Surety segment | Commercial
Revenue by major product
Net premiums earned									26,751	27,625	29,105
Surety segment | Energy Surety
Revenue by major product
Net premiums earned									$ 16,718	$ 17,553	$ 18,018

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UNAUDITED INTERIM FINANCIAL INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
UNAUDITED INTERIM FINANCIAL INFORMATION
Net premiums earned	$ 204,002	$ 200,815	$ 196,522	$ 190,027	$ 188,296	$ 182,025	$ 184,331	$ 183,285	$ 791,366	$ 737,937	$ 728,608
Net investment income	16,962	16,314	14,577	14,232	14,446	14,187	13,238	13,005	62,085	54,876	53,075
Net realized gains (losses)	15,507	18,647	20,849	8,404	5,111	35	(1,359)	624	63,407	4,411	34,645
Equity Securities, FV-NI, Unrealized Gain (Loss)	(64,200)	4,848	(12,611)	(26,772)					(98,735)
Earnings before income taxes	(32,708)	46,349	39,562	14,378	24,972	(862)	34,036	26,443	67,581	84,589	157,082
Net earnings	$ (20,660)	$ 39,372	$ 33,251	$ 12,216	$ 57,258	$ 1,734	$ 26,208	$ 19,828	$ 64,179	$ 105,028	$ 114,920
Basic earnings per share (in dollars per share)	$ (0.46)	$ 0.89	$ 0.75	$ 0.28	$ 1.30	$ 0.04	$ 0.60	$ 0.45	$ 1.45	$ 2.39	$ 2.63
Diluted earnings per share (in dollars per share)	$ (0.46)	$ 0.88	$ 0.74	$ 0.27	$ 1.29	$ 0.04	$ 0.59	$ 0.45	$ 1.43	$ 2.36	$ 2.59

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SCHEDULE I-SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES (Details) $ in Thousands	Dec. 31, 2018 USD ($)
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	$ 2,090,288
Fair Value	2,194,230
Amount at which shown in the balance sheet	2,194,230
Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	1,776,465
Fair Value	1,760,515
Amount at which shown in the balance sheet	1,760,515
Debt securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	1,776,465
Fair Value	1,760,515
Amount at which shown in the balance sheet	1,760,515
U.S. government | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	199,982
Fair Value	200,229
Amount at which shown in the balance sheet	200,229
U.S. Agency | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	31,716
Fair Value	31,904
Amount at which shown in the balance sheet	31,904
Non-U.S. govt. & agency | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	8,170
Fair Value	7,639
Amount at which shown in the balance sheet	7,639
Mtge/ABS/CMBS | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	402,992
Fair Value	395,253
Amount at which shown in the balance sheet	395,253
ABS/CMBS | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	137,224
Fair Value	136,723
Amount at which shown in the balance sheet	136,723
Corporate Debt | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	681,909
Fair Value	668,679
Amount at which shown in the balance sheet	668,679
Municipal | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	314,472
Fair Value	320,088
Amount at which shown in the balance sheet	320,088
Equity securities | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	220,373
Fair Value	340,483
Amount at which shown in the balance sheet	340,483
Ind Misc & all other | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	98,879
Fair Value	177,040
Amount at which shown in the balance sheet	177,040
ETFs (Ind/misc) | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	121,494
Fair Value	163,443
Amount at which shown in the balance sheet	163,443
Cash and Short-term Investments | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	41,690
Fair Value	41,690
Amount at which shown in the balance sheet	41,690
Other Invested Assets | Available for sale securities
SCHEDULE I - SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES
Cost	51,760
Fair Value	51,542
Amount at which shown in the balance sheet	$ 51,542

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SCHEDULE II-CONDENSED FINANCIAL INFORMATION OF REGISTRANT (PARENT COMPANY) - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash	$ 30,140	$ 24,271
Short-term investments, at cost which approximates fair value	11,550	9,980
Investments in unconsolidated investee, at equity value	94,967	90,067
Fixed income:
Available-for-sale fixed income	1,760,515	1,672,239
Property and equipment, at cost, net of accumulated depreciation of $1,426 in 2017 and $1,523 in 2016	54,692	55,849
TOTAL ASSETS	3,105,065	2,947,244
Liabilities:
Bonds payable, long-term debt	149,115	148,928
TOTAL LIABILITIES	2,298,223	2,093,646
Shareholders' Equity
Common stock ($1 par value, authorized 100,000,000 shares, issued 67,078,569 shares in 2017 and 66,874,911 shares in 2016, and outstanding 44,148,355 shares in 2017 and 43,944,697 shares in 2016)	674	67,079
Paid-in capital	305,660	233,077
Accumulated other comprehensive earnings	(14,572)	157,919
Retained earnings	908,079	788,522
Deferred compensation	8,354	8,640
Treasury shares at cost (22,930,214 shares in 2017 and 2016)	(401,353)	(401,639)
TOTAL SHAREHOLDERS’ EQUITY	806,842	853,598	$ 823,572	$ 823,469
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	3,105,065	2,947,244
PARENT COMPANY
ASSETS
Cash	3,214	204
Short-term investments, at cost which approximates fair value		70
Accounts receivable, affiliates		1,057
Investments in subsidiaries, at equity value	828,806	912,515
Investments in unconsolidated investee, at equity value	79,521	77,720
Fixed income:
Available-for-sale fixed income	59,878	23,210
Property and equipment, at cost, net of accumulated depreciation of $1,426 in 2017 and $1,523 in 2016	1,914	1,982
Income taxes receivable - current		1,542
Other assets	547	156
TOTAL ASSETS	973,880	1,018,456
Liabilities:
Accounts payable, affiliates	130
Income taxes payable--current	32
Income taxes payable--deferred	15,081	13,207
Bonds payable, long-term debt	149,115	148,928
Interest payable, long-term debt	2,153	2,153
Other liabilities	527	570
TOTAL LIABILITIES	167,038	164,858
Shareholders' Equity
Common stock ($1 par value, authorized 100,000,000 shares, issued 67,078,569 shares in 2017 and 66,874,911 shares in 2016, and outstanding 44,148,355 shares in 2017 and 43,944,697 shares in 2016)	674	67,079
Paid-in capital	305,660	233,077
Accumulated other comprehensive earnings	(14,572)	157,919
Retained earnings	908,079	788,522
Deferred compensation	8,354	8,640
Treasury shares at cost (22,930,214 shares in 2017 and 2016)	(401,353)	(401,639)
TOTAL SHAREHOLDERS’ EQUITY	806,842	853,598
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 973,880	$ 1,018,456

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SCHEDULE II-CONDENSED FINANCIAL INFORMATION OF REGISTRANT (PARENT COMPANY) - Balance Sheets Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
CONDENSED BALANCE SHEETS (Parenthetical)
Available-for-sale, amortized cost	$ 1,776,465	$ 1,646,411
Property and equipment, accumulated depreciation	$ 54,275	$ 47,676
Common stock, par value (in dollars per share)	$ 0.01	$ 1.00
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	67,434,257	67,078,569
Common stock, shares outstanding (in shares)	44,504,043	44,148,355
Treasury stock, shares (in shares)	22,930,214	22,930,214
PARENT COMPANY
CONDENSED BALANCE SHEETS (Parenthetical)
Available-for-sale, amortized cost	$ 58,812	$ 23,184
Property and equipment, accumulated depreciation	$ 1,494	$ 1,426
Common stock, par value (in dollars per share)	$ 0.01	$ 1.00
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	67,434,257	67,078,569
Common stock, shares outstanding (in shares)	44,504,043	44,148,355
Treasury stock, shares (in shares)	22,930,214	22,930,214

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SCHEDULE II-CONDENSED FINANCIAL INFORMATION OF REGISTRANT (PARENT COMPANY) - Statements of Earnings and Comprehensive Earnings (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONDENSED STATEMENTS OF EARNINGS AND COMPREHENSIVE EARNINGS
Net investment income	$ 16,962	$ 16,314	$ 14,577	$ 14,232	$ 14,446	$ 14,187	$ 13,238	$ 13,005	$ 62,085	$ 54,876	$ 53,075
Net realized gains									63,624	6,970	34,740
Equity in earnings of unconsolidated investees									16,056	17,224	10,833
Interest expense on debt									(7,437)	(7,426)	(7,426)
Earnings before income taxes	(32,708)	46,349	39,562	14,378	24,972	(862)	34,036	26,443	67,581	84,589	157,082
Income tax benefit									3,402	(20,439)	42,162
Net earnings	$ (20,660)	$ 39,372	$ 33,251	$ 12,216	$ 57,258	$ 1,734	$ 26,208	$ 19,828	64,179	105,028	114,920
Unrealized gains (losses) on securities:
Other comprehensive earnings (loss), net of tax									(33,997)	35,309	(1,164)
Comprehensive earnings									30,182	140,337	113,756
PARENT COMPANY
CONDENSED STATEMENTS OF EARNINGS AND COMPREHENSIVE EARNINGS
Net investment income									648	647	942
Net realized gains									(142)	(36)	(360)
Equity in earnings of unconsolidated investees									12,471	14,436	9,764
Selling, general and administrative expenses									(9,427)	(11,340)	(10,170)
Interest expense on debt									(7,437)	(7,426)	(7,426)
Earnings before income taxes									(3,887)	(3,719)	(7,250)
Income tax benefit									(2,359)	(16,601)	(8,467)
Net earnings (loss) before equity in net earnings of subsidiaries									(1,528)	12,882	1,217
Equity in net earnings of subsidiaries									65,707	92,146	113,703
Net earnings									64,179	105,028	114,920
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during the period									710	21	308
Less: reclassification adjustment for losses (gains) included in net earnings									112	6	(131)
Other Comprehensive Income (Loss), Net of Tax, Total									822	27	177
Equity in other comprehensive earnings (loss) of subsidiaries/investees									(34,819)	35,282	(1,341)
Other comprehensive earnings (loss), net of tax									(33,997)	35,309	(1,164)
Comprehensive earnings									$ 30,182	$ 140,337	$ 113,756

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SCHEDULE II-CONDENSED FINANCIAL INFORMATION OF REGISTRANT (PARENT COMPANY) - Statements of Cash Flows (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Adjustments to reconcile net losses to net cash provided by (used in) operating activities:
Net realized gains (losses)	$ (15,507,000)	$ (18,647,000)	$ (20,849,000)	$ (8,404,000)	$ (5,111,000)	$ (35,000)	$ 1,359,000	$ (624,000)	$ (63,407,000)	$ (4,411,000)	$ (34,645,000)
Depreciation									7,042,000	6,944,000	6,430,000
Other items, net									6,171,000	16,368,000	17,699,000
Change in:
Stock option excess tax benefit											(9,576,000)
Changes in investment in unconsolidated investees:
Undistributed earnings									(16,056,000)	(17,224,000)	(10,833,000)
Dividends received									9,900,000	0	9,900,000
Net Cash Provided by Operating Activities									217,102,000	197,525,000	174,463,000
Purchase of:
Fixed income, available-for-sale									(725,675,000)	(430,727,000)	(557,067,000)
Short-term investments, net									(1,570,000)	(4,965,000)
Property and equipment									(6,087,000)	(9,238,000)	(16,155,000)
Sale of:
Fixed income, available-for-sale									395,019,000	168,760,000	329,091,000
Short-term investments, net											2,564,000
Property and equipment									167,000	128,000	1,688,000
Call or maturity of:
Fixed income, available-for-sale									187,380,000	195,617,000	141,255,000
Net Cash Used in Investing Activities, Total									(134,209,000)	(81,212,000)	(53,622,000)
Cash flows from financing activities
Excess tax benefit from exercise of stock options											9,576,000
Stock plan share issuance									(6,076,000)	(3,502,000)	741,000
Net Cash Used in Financing Activities, Total									(77,024,000)	(110,311,000)	(113,653,000)
Net increase (decrease) in cash									5,869,000	6,002,000	7,188,000
Cash at the beginning of the period				24,271,000				18,269,000	24,271,000	18,269,000	11,081,000
Cash at the end of the period	30,140,000				24,271,000				30,140,000	24,271,000	18,269,000
Interest paid on outstanding debt									7,300,000	7,300,000	7,300,000
PARENT COMPANY
Cash flows from operating activities
Earnings (loss) before equity in net earnings of subsidiaries									(1,528,000)	12,882,000	1,217,000
Adjustments to reconcile net losses to net cash provided by (used in) operating activities:
Net realized gains (losses)									142,000	36,000	360,000
Depreciation									68,000	77,000	196,000
Other items, net									(471,000)	595,000	560,000
Change in:
Affiliate balances receivable/payable									1,187,000	(930,000)	(535,000)
Federal income taxes									3,430,000	(6,874,000)	9,762,000
Stock option excess tax benefit											(9,576,000)
Changes in investment in unconsolidated investees:
Undistributed earnings									(12,471,000)	(14,436,000)	(9,764,000)
Dividends received									9,900,000		9,900,000
Net Cash Provided by Operating Activities									257,000	(8,650,000)	2,120,000
Purchase of:
Fixed income, available-for-sale									(73,812,000)	(5,773,000)	(12,844,000)
Short-term investments, net										(47,000)
Sale of:
Fixed income, available-for-sale									12,056,000	24,771,000	4,981,000
Short-term investments, net									70,000		63,000
Property and equipment										128,000
Call or maturity of:
Fixed income, available-for-sale									75,662,000	3,499,000	6,859,000
Cash dividends received-subsidiaries									73,363,000	107,000,000	123,600,000
Net Cash Used in Investing Activities, Total									87,339,000	129,578,000	122,659,000
Cash flows from financing activities
Excess tax benefit from exercise of stock options											9,576,000
Stock plan share issuance									(6,076,000)	(3,502,000)	741,000
Cash dividends paid									(90,662,000)	(124,247,000)	(133,771,000)
Net Cash Used in Financing Activities, Total									(84,586,000)	(120,745,000)	(124,936,000)
Net increase (decrease) in cash									3,010,000	183,000	(157,000)
Cash at the beginning of the period				$ 204,000				$ 21,000	204,000	21,000	178,000
Cash at the end of the period	$ 3,214,000				$ 204,000				3,214,000	204,000	21,000
Interest paid on outstanding debt									$ 7,300,000	$ 7,300,000	$ 7,300,000

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SCHEDULE III-SUPPLEMENTARY INSURANCE INFORMATION (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Supplementary insurance information
Deferred policy acquisition costs	$ 84,934	$ 77,716	$ 73,147
Unpaid losses and settlement expenses, gross	1,461,348	1,271,503	1,139,337
Unearned premiums, gross	496,505	451,449	433,777
Net premiums earned	791,366	737,937	728,608
Incurred losses and settlement expenses
Current accident year	478,143	440,452	391,772
Prior accident years	(49,950)	(38,868)	(41,994)
Policy acquisition costs	267,738	252,515	249,612
Other operating expenses	53,803	56,994	53,093
Net premiums written	823,175	749,854	740,952
Casualty segment
Supplementary insurance information
Deferred policy acquisition costs	50,040	44,358	39,131
Unpaid losses and settlement expenses, gross	1,283,204	1,127,787	1,021,506
Unearned premiums, gross	330,836	296,751	276,096
Net premiums earned	523,472	478,603	454,843
Incurred losses and settlement expenses
Current accident year	363,015	323,141	292,308
Prior accident years	(33,252)	(17,462)	(32,401)
Policy acquisition costs	151,007	136,135	128,566
Other operating expenses	31,562	32,885	30,040
Net premiums written	547,177	494,649	470,082
Property segment
Supplementary insurance information
Deferred policy acquisition costs	14,090	13,029	13,115
Unpaid losses and settlement expenses, gross	134,822	107,304	76,989
Unearned premiums, gross	93,032	84,010	84,425
Net premiums earned	149,261	138,346	152,167
Incurred losses and settlement expenses
Current accident year	94,635	97,161	76,143
Prior accident years	(10,813)	(12,134)	(4,793)
Policy acquisition costs	51,830	51,070	54,167
Other operating expenses	12,725	14,108	13,819
Net premiums written	155,601	137,031	149,170
Surety segment
Supplementary insurance information
Deferred policy acquisition costs	20,804	20,329	20,901
Unpaid losses and settlement expenses, gross	43,322	36,412	40,842
Unearned premiums, gross	72,637	70,688	73,256
Net premiums earned	118,633	120,988	121,598
Incurred losses and settlement expenses
Current accident year	20,493	20,150	23,321
Prior accident years	(5,885)	(9,272)	(4,800)
Policy acquisition costs	64,901	65,310	66,879
Other operating expenses	9,516	10,001	9,234
Net premiums written	$ 120,397	$ 118,174	$ 121,700

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SCHEDULE IV-REINSURANCE (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
RLI Insurance Group Premiums earned
Direct amount									$ 896,234	$ 835,118	$ 835,294
Ceded to other companies									146,794	129,702	134,572
Assumed from other companies									41,926	32,521	27,886
Net amount	$ 204,002	$ 200,815	$ 196,522	$ 190,027	$ 188,296	$ 182,025	$ 184,331	$ 183,285	$ 791,366	$ 737,937	$ 728,608
Percentage of amount assumed to net									5.30%	4.40%	3.80%
Casualty segment
RLI Insurance Group Premiums earned
Direct amount									$ 578,643	$ 536,085	$ 528,691
Ceded to other companies									96,639	86,190	89,635
Assumed from other companies									41,468	28,708	15,787
Net amount									$ 523,472	$ 478,603	$ 454,843
Percentage of amount assumed to net									7.90%	6.00%	3.50%
Property segment
RLI Insurance Group Premiums earned
Direct amount									$ 193,855	$ 172,668	$ 179,460
Ceded to other companies									44,634	37,607	38,353
Assumed from other companies									40	3,285	11,060
Net amount									$ 149,261	$ 138,346	$ 152,167
Percentage of amount assumed to net									0.00%	2.40%	7.30%
Surety segment
RLI Insurance Group Premiums earned
Direct amount									$ 123,736	$ 126,365	$ 127,143
Ceded to other companies									5,521	5,905	6,584
Assumed from other companies									418	528	1,039
Net amount									$ 118,633	$ 120,988	$ 121,598
Percentage of amount assumed to net									0.40%	0.40%	0.90%

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SCHEDULE V-VALUATION AND QUALIFYING ACCOUNTS (Details) - Allowance for uncollectible reinsurance - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for uncollectible reinsurance
Balance at beginning of period	$ 25,911	$ 25,911	$ 25,911
Amounts charged to expense
Amounts recovered (written off)
Balance at end of period	$ 25,911	$ 25,911	$ 25,911

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SCHEDULE VI-SUPPLEMENTARY INFORMATION CONCERNING PROPERTY-CASUALTY INSURANCE OPERATIONS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Claims and claim adjustment expenses incurred related to:
Current accident year	$ 478,143	$ 440,452	$ 391,772
Prior accident years	(49,950)	(38,868)	(41,994)
Amortization of deferred acquisition costs	267,738	252,515	249,612
Consolidated property-casualty insurance operations
SUPPLEMENTARY INFORMATION CONCERNING PROPERTY-CASUALTY INSURANCE OPERATIONS
Deferred policy acquisition costs	84,934	77,716	73,147
Claims and claim adjustment expense reserves	1,461,348	1,271,503	1,139,337
Unearned premiums, gross	496,505	451,449	433,777
Net premiums earned	791,366	737,937	728,608
Net investment income	62,085	54,876	53,075
Claims and claim adjustment expenses incurred related to:
Current accident year	478,143	440,452	391,772
Prior accident years	(49,950)	(38,868)	(41,994)
Amortization of deferred acquisition costs	267,738	252,515	249,612
Paid claims and claims adjustment expenses	301,356	283,185	304,606
Net premiums written	$ 823,175	$ 749,854	$ 740,952