10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2018

Commission file number:

001-12251

AMERISAFE, INC.

(Exact Name of Registrant as Specified in Its Charter)

Texas	75-2069407
(State of Incorporation)	(I.R.S. Employer Identification Number)
2301 Highway 190 West, DeRidder, Louisiana	70634
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s telephone number, including area code: (337) 463-9052

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 and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted 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 and post such files).    Yes  ☒    No  ☐

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. (Check one):

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐  (Do not check if a smaller reporting company)	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.              ☐

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

As of August 1, 2018, there were 19,269,980 shares of the Registrant’s common stock, par value $.01 per share, outstanding.

TABLE OF CONTENTS

		Page
		No.
FORWARD-LOOKING STATEMENTS		3
PART I - FINANCIAL INFORMATION
Item 1	Financial Statements	4
Item 2	Management’s Discussion and Analysis of Financial Condition and Results of Operations	21
Item 3	Quantitative and Qualitative Disclosures About Market Risk	26
Item 4	Controls and Procedures	27
PART II - OTHER INFORMATION
Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	28
Item 6	Exhibits	28

2

FORWARD-LOOKING STATEMENTS

This report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and 21E of the Securities Exchange Act of 1934. You should not place undue reliance on these statements. These forward-looking statements include statements that reflect the current views of our senior management with respect to our financial performance and future events with respect to our business and the insurance industry in general. Statements that include the words “expect,” “intend,” “plan,” “believe,” “project,” “forecast,” “estimate,” “may,” “should,” “anticipate” and similar statements of a future or forward-looking nature identify forward-looking statements. Forward-looking statements address matters that involve risks and uncertainties. Accordingly, there are or will be important factors that could cause our actual results to differ materially from those indicated in these statements. We believe that these factors include, but are not limited to, the following:

• the cyclical nature of the workers’ compensation insurance industry;

• increased competition on the basis of types of insurance offered, premium rates, coverage availability, payment terms, claims management, safety services, policy terms, overall financial strength, financial ratings and reputation;

• general economic conditions, including recession, inflation, performance of financial markets, interest rates, unemployment rates and fluctuating asset values;

• changes in relationships with independent agencies;

• developments in capital markets that adversely affect the performance of our investments;

• technology breaches or failures, including those resulting from a malicious cyber attack on the Company or its policyholders and medical providers;

• decreased level of business activity of our policyholders caused by decreased business activity generally, and in particular in the industries we target;

• greater frequency or severity of claims and loss activity, including as a result of natural or man-made catastrophic events, than our underwriting, reserving or investment practices anticipate based on historical experience or industry data;

• adverse developments in economic, competitive, judicial or regulatory conditions within the workers’ compensation insurance industry;

• loss of the services of any of our senior management or other key employees;

• changes in regulations, laws, rates, rating factors, or taxes applicable to the Company, its policyholders or the agencies that sell its insurance;

• changes in accounting standards or new accounting standards;

• changes in legal theories of liability under our insurance policies;

• changes in rating agency policies, practices or ratings;

• changes in the availability, cost or quality of reinsurance and the failure of our reinsurers to pay claims in a timely manner or at all;

• the effects of U.S. involvement in hostilities with other countries and large-scale acts of terrorism, or the threat of hostilities or terrorist acts; and

• other risks and uncertainties described from time to time in the Company’s filings with the Securities and Exchange Commission (“SEC”).

The foregoing factors should not be construed as exhaustive and should be read together with the other cautionary statements included in this report, and under the caption “Risk Factors” in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2017. If one or more events related to these or other risks or uncertainties materialize, or if our underlying assumptions prove to be incorrect, actual results may differ materially from what we anticipate.

3

PART I - FINANCIAL INFORMATION

Item 1. Financial Statements.

AMERISAFE, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except share data)

	June 30, 2018			December 31, 2017
	(unaudited)
Assets
Investments:
Fixed maturity securities—held-to-maturity, at amortized cost (fair value    $607,072 and $639,309 in 2018 and 2017, respectively)	$	605,877		$	629,668
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and    $461,236 in 2018 and 2017, respectively)		440,762			465,594
Equity securities—available-for-sale, at fair value (cost $13,590 and $8,503 in 2018    and 2017, respectively)		13,590			9,282
Short-term investments		106,811			25,770
Total investments		1,167,040			1,130,314
Cash and cash equivalents		21,176			55,559
Amounts recoverable from reinsurers		98,961			90,133
Premiums receivable, net of allowance		189,892			174,234
Deferred income taxes		19,891			19,262
Accrued interest receivable		10,458			10,635
Property and equipment, net		6,644			6,128
Deferred policy acquisition costs		21,601			20,251
Federal income tax recoverable		1,205			1,761
Other assets		17,413			9,959
Total assets	$	1,554,281		$	1,518,236
Liabilities and shareholders’ equity
Liabilities:
Reserves for loss and loss adjustment expenses	$	783,601		$	771,845
Unearned premiums		167,310			157,270
Amounts held for others		39,103			36,908
Policyholder deposits		47,956			48,364
Insurance-related assessments		30,070			28,246
Accounts payable and other liabilities		38,441			37,076
Payable for investments purchased		2,409			13,104
Total liabilities		1,108,890			1,092,813
Shareholders’ equity:
Common stock:  voting—$0.01 par value authorized shares—50,000,000    in 2018 and 2017; 20,528,230 and 20,504,165 shares issued and 19,269,980    and 19,245,915  shares outstanding in 2018 and 2017, respectively		205			204
Additional paid-in capital		210,895			210,081
Treasury stock, at cost (1,258,250 shares in 2018 and 2017)		(22,370	)		(22,370	)
Accumulated earnings		258,744			233,896
Accumulated other comprehensive income (loss), net		(2,083	)		3,612
Total shareholders’ equity		445,391			425,423
Total liabilities and shareholders’ equity	$	1,554,281		$	1,518,236

See accompanying notes.

4

AMERISAFE, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(in thousands, except share and per share data)

(unaudited)

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
Revenues
Gross premiums written	$	93,702		$	87,039		$	191,044		$	182,117
Ceded premiums written		(2,369	)		(2,198	)		(4,699	)		(4,589	)
Net premiums written	$	91,333		$	84,841		$	186,345		$	177,528
Net premiums earned	$	88,995		$	82,749		$	176,305		$	173,661
Net investment income		7,303			7,471			14,512			14,181
Net realized losses on investments		(1,111	)		(388	)		(1,142	)		(569	)
Net unrealized gains (losses) on equity securities		76			—			(314	)		—
Fee and other income		117			93			194			194
Total revenues		95,380			89,925			189,555			187,467
Expenses
Loss and loss adjustment expenses incurred		52,076			46,428			105,238			102,644
Underwriting and certain other operating costs		7,985			7,645			15,831			16,145
Commissions		6,616			5,984			13,110			12,394
Salaries and benefits		6,681			6,554			12,607			12,866
Policyholder dividends		1,092			1,163			2,425			2,534
Total expenses		74,450			67,774			149,211			146,583
Income before income taxes		20,930			22,151			40,344			40,884
Income tax expense		3,974			6,670			7,219			11,879
Net income	$	16,956		$	15,481		$	33,125		$	29,005
Earnings per share
Basic	$	0.88		$	0.81		$	1.73		$	1.51
Diluted	$	0.88		$	0.81		$	1.72		$	1.51
Shares used in computing earnings per share
Basic		19,208,601			19,162,049			19,197,925			19,156,250
Diluted		19,266,735			19,227,960			19,275,883			19,227,997
Cash dividends declared per common share	$	0.22		$	0.20		$	0.44		$	0.40

See accompanying notes.

5

AMERISAFE, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

(unaudited)

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018			2017
Net income	$	16,956	$	15,481	$	33,125		$	29,005
Other comprehensive income:
Unrealized gain (loss) on securities, net of tax  (1)		153		1,956		(5,695	)		2,908
Comprehensive income	$	17,109	$	17,437	$	27,430		$	31,913

______________

(1) Data presented for 2018 includes debt securities only compared to 2017 which includes both debt and equity securities.

See accompanying notes.

6

AMERISAFE, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS’ EQUITY

(in thousands, except share data)

(unaudited)

	Common Stock				Additional Paid-In		Treasury Stock						Accumulated Earnings			Accumulated Other Comprehensive
	Shares		Amounts		Capital		Shares			Amounts			Earnings			Income (Loss)			Total
Balance at December 31, 2017		20,504,165	$	204	$	210,081		(1,258,250	)	$	(22,370	)	$	233,896		$	3,612		$	425,423
Comprehensive income		—		—		—		—			—			33,125			(5,695	)		27,430
Impact of adoption of    ASU 2016-01		—		—		—		—			—			614			—			614
Impact of adoption of    ASU 2018-02		—		—		—		—			—			(414	)		—			(414	)
Common stock issued upon      exercise of options		15,000		—		67		—			—			—			—			67
Common stock issued		9,065		1		195		—			—			—			—			196
Share-based compensation		—		—		552		—			—			—			—			552
Dividends to shareholders		—		—		—		—			—			(8,477	)		—			(8,477	)
Balance at June 30, 2018		20,528,230	$	205	$	210,895		(1,258,250	)	$	(22,370	)	$	258,744		$	(2,083	)	$	445,391

See accompanying notes.

7

AMERISAFE, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(unaudited)

	Six Months Ended June 30,
	2018			2017
Operating activities
Net income	$	33,125		$	29,005
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		488			529
Net amortization of investments		5,979			7,394
Deferred income taxes		831			302
Net realized losses on investments		1,142			569
Net unrealized losses on equity securities		314			—
Net realized losses on disposal of assets		—			2
Share-based compensation		782			937
Changes in operating assets and liabilities:
Premiums receivable, net		(15,658	)		(7,641	)
Accrued interest receivable		177			153
Deferred policy acquisition costs		(1,350	)		(1,582	)
Amounts held by others		(7,855	)		—
Other assets		942			(1,900	)
Reserves for loss and loss adjustment expenses		11,756			6,983
Unearned premiums		10,040			3,867
Reinsurance balances		(8,828	)		(509	)
Amounts held for others and policyholder deposits		1,787			1,882
Accounts payable and other liabilities		3,312			807
Net cash provided by operating activities		36,984			40,798
Investing activities
Purchases of investments held-to-maturity		(38,129	)		(96,697	)
Purchases of investments available-for-sale		(56,550	)		(50,193	)
Purchases of short-term investments		(100,059	)		(30,800	)
Proceeds from maturities of investments held-to-maturity		52,584			66,276
Proceeds from sales and maturities of investments available-for-sale		66,762			54,062
Proceeds from sales and maturities of short-term investments		13,465			13,610
Proceeds from redemptions of other investments		130			6,000
Purchases of property and equipment		(1,004	)		(240	)
Net cash used in investing activities		(62,801	)		(37,982	)
Financing activities
Proceeds from stock option exercises		67			—
Dividends to shareholders		(8,633	)		(7,785	)
Net cash used in financing activities		(8,566	)		(7,785	)
Change in cash and cash equivalents		(34,383	)		(4,969	)
Cash and cash equivalents at beginning of period		55,559			58,936
Cash and cash equivalents at end of period	$	21,176		$	53,967

See accompanying notes.

8

AMERISAFE, INC. AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

Note 1. Basis of Presentation

AMERISAFE, Inc. (the “Company”) is an insurance holding company incorporated in the state of Texas. The accompanying unaudited condensed consolidated financial statements include the accounts of AMERISAFE and its subsidiaries: American Interstate Insurance Company (“AIIC”) and its insurance subsidiaries, Silver Oak Casualty, Inc. (“SOCI”) and American Interstate Insurance Company of Texas (“AIICTX”), Amerisafe Risk Services, Inc. (“RISK”) and Amerisafe General Agency, Inc. (“AGAI”). AIIC and SOCI are property and casualty insurance companies organized under the laws of the state of Nebraska. AIICTX is a property and casualty insurance company organized under the laws of the state of Texas. RISK, a wholly owned subsidiary of the Company, is a claims and safety service company currently servicing only affiliated insurance companies. AGAI, a wholly owned subsidiary of the Company, is a general agent for the Company. AGAI sells insurance, which is underwritten by AIIC, SOCI and AIICTX, as well as by nonaffiliated insurance carriers. The assets and operations of AGAI are not significant to that of the Company and its consolidated subsidiaries.

The terms “AMERISAFE,” the “Company,” “we,” “us” or “our” refer to AMERISAFE, Inc. and its consolidated subsidiaries, as the context requires.

The Company provides workers’ compensation insurance for small to mid-sized employers engaged in hazardous industries, principally construction, trucking, logging and lumber, manufacturing, and agriculture. Assets and revenues of AIIC represent at least 95% of comparable consolidated amounts of the Company for each of the six months ended June 30, 2018 and 2017.

In the opinion of management of the Company, the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting of normal recurring accruals) necessary to present fairly the financial position, the results of operations and cash flows for the periods presented. The unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q under the Securities Exchange Act of 1934 and therefore do not include all information and footnotes to be in conformity with accounting principles generally accepted in the United States (“GAAP”). The results for the interim periods are not necessarily indicative of the results of operations that may be expected for the year. The unaudited condensed consolidated financial statements contained herein should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017.

The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Adopted Accounting Guidance

In January 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-01, Financial Instruments – Overall (Subtopic 825-10):  Recognition and Measurement of Financial Assets and Financial Liabilities.  This guidance requires fair value measurement for equity investments (not including those that result in consolidation of the investee or use the equity method of accounting) and the recognition of changes in fair value to be presented as a component of net income.  The guidance also revises the disclosure requirements related to fair value changes of liabilities presented in comprehensive income, eliminates disclosure related to the methods and assumptions underlying fair value for financial instruments measured at amortized cost, and simplifies impairment assessments for equity investments without readily determinable fair values.  The adoption of this new guidance in the first quarter of 2018 resulted in an immaterial decrease in net income of $390 thousand or a $0.02 decrease in our diluted earnings per common share.  

In May 2014, the FASB issued ASU 2014-09 (Topic 606): Revenue from Contracts with Customers.  The guidance revises the criteria for revenue recognition and requires that the revenue recognized reflect the transfer of promised goods or services to customers in an amount that represents the consideration to which the entity expects to be entitled in exchange for those goods or services.  The standard was effective for us in the first quarter of 2018.  The adoption of the new guidance had no impact on the Company's reporting and disclosure of net premiums earned, net investment income or net realized gains and losses, as these items are not within the scope of this new guidance. The remaining revenue sources are immaterial and not impacted by the new standard.

9

In February 2018, the FASB issued ASU 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220).  This ASU provided new guidance on reclassification from Other Comprehensive Income (“OCI”) of tax effects related to the recently passed tax reform legislation (the “Tax Act”).  The guidance gives entities the option to reclassify to retained earnings tax effects related to items in accumulated OCI deemed to be stranded as a result of tax reform.  The guidance was effective for us in the first quarter of 2018 and was applied retrospectively.  The Company’s policy for releasing income tax effects from accumulated OCI was the individual securities approach for available-for-sale securities.  The adoption of this guidance did not have a material impact on our financial condition and results of operations.

In December 2017, the SEC issued Staff Accounting Bulletin (SAB) 118 which provided guidance on accounting for tax effects of the Tax Act.  Among many changes of the Tax Act which affected Property and Casualty Insurers, the Tax Act required property and casualty taxpayers to discount loss reserves based solely on IRS factors and no longer by reference to historical payment patterns.  As the IRS has yet to release the 2018 discount factors, we have used the 2017 IRS discount factors to estimate the impact of the change in loss reserve discounting factors and adjusted our deferred tax balances for the impact of these changes.  Once the IRS has released the 2018 loss reserve discount factors, we will complete our analysis and include the effect of the difference in the reserve discount factors in the period the analysis is complete or the impact is reasonably estimable.

Prospective Accounting Guidance

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842).  Under current guidance for lessees, leases are only included on the balance sheet if certain criteria, classifying the contract as a capital lease, are met.  The new guidance requires a lessee to recognize a lease liability and a right of use asset for all leases extending beyond twelve months.  The new guidance is effective for us in the first quarter of 2019.  Upon adoption, leases will be recognized and measured at the beginning of the earliest period presented using a modified retrospective approach.  Adoption of the guidance is not expected to have a material effect on the Company’s consolidated financial statements as the Company does not have any significant leases.  

In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses.  The new guidance replaces the methodology of credit loss impairment, which currently, delays the recognition of credit losses until a probable loss has been incurred.  The new guidance requires credit losses for securities measured at amortized cost to be determined using current expected credit loss estimates.  These estimates are to be derived from historical, current and reasonable supporting forecasts, including prepayments and estimates, and will be recorded through a valuation allowance account that will run through the income statement.  The same method will be used for available-for-sale securities, but the valuation allowance will be limited to the amount by which the fair value is below amortized cost.  The standard is effective for us in the first quarter of 2020.  The Company will continue to monitor and evaluate the impact as the implementation date approaches.

All other issued but not yet effective accounting and reporting standards as of June 30, 2018 are either not applicable to the Company or are not expected to have a material impact on the Company.

Note 2. Stock Options and Restricted Stock

As of June 30, 2018, the Company has three equity incentive plans: the AMERISAFE 2005 Equity Incentive Plan (the “2005 Incentive Plan”), the AMERISAFE Non-Employee Director Restricted Stock Plan (the “Restricted Stock Plan”) and the AMERISAFE 2012 Equity and Incentive Compensation Plan (the “2012 Incentive Plan”). In connection with the approval of the 2012 Incentive Plan by the Company’s shareholders, no further grants will be made under the 2005 Incentive Plan.  All grants made under the 2005 Incentive plan continue in effect, subject to the terms and conditions of the 2005 Incentive Plan. See Note 12 to our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2017 for additional information regarding the Company’s incentive plans.

During the six months ended June 30, 2018, the Company granted 3,304 shares of common stock to executive officers and 5,761 shares of restricted common stock to non-employee directors.  The market value of the shares granted totaled $0.5 million.  During the six months ended June 30, 2017, the Company granted 7,434 shares of common stock to executive officers and 6,454 shares of restricted common stock to non-employee directors. The market value of the shares granted totaled $0.7 million.

During the six months ended June 30, 2018, options to purchase 15,000 shares of common stock were exercised. In connection with these exercises, the Company received $0.1 million of stock option proceeds.  During the six months ended June 30, 2017, no options to purchase shares of common stock were exercised.

10

The Company recognized share-based compensation expense of $0.8 million in the quarter ended June 30, 2018 compared to $0.5 million for the same period in 2017.  The Company recognized share-based compensation expense of $0.8 million in the six months ended June 30, 2018 and $0.9 million for the same period in 2017.

Note 3. Earnings Per Share

The Company computes earnings per share (“EPS”) in accordance with FASB Accounting Standards Codification (“ASC”) Topic 260, Earnings Per Share. The Company has no participating unvested common shares which contain nonforfeitable rights to dividends and applies the treasury stock method in computing basic and diluted earnings per share.

Basic EPS is calculated by dividing net income by the weighted-average number of common shares outstanding during the period.

The diluted EPS calculation includes potential common shares assumed issued under the treasury stock method, which reflects the potential dilution that would occur if any outstanding options were exercised or restricted stock becomes vested.

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
	(in thousands, except share and per share amounts)
Basic EPS:
Net income - basic	$	16,956	$	15,481	$	33,125	$	29,005
Basic weighted average common shares		19,208,601		19,162,049		19,197,925		19,156,250
Basic earnings per common share	$	0.88	$	0.81	$	1.73	$	1.51
Diluted EPS:
Net income - diluted	$	16,956	$	15,481	$	33,125	$	29,005
Diluted weighted average common shares:
Weighted average common shares		19,208,601		19,162,049		19,197,925		19,156,250
Stock options and restricted stock		58,134		65,911		77,958		71,747
Diluted weighted average common shares		19,266,735		19,227,960		19,275,883		19,227,997
Diluted earnings per common share	$	0.88	$	0.81	$	1.72	$	1.51

Note 4. Investments

The gross unrealized gains and losses on, and the amortized cost and fair value of, those investments classified as held-to-maturity at June 30, 2018 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	432,914	$	4,714	$	(2,891	)	$	434,737
Corporate bonds		98,702		38		(724	)		98,016
U.S. agency-based mortgage-backed securities		9,038		420		(71	)		9,387
U.S. Treasury securities and obligations of U.S.    government agencies		64,063		385		(691	)		63,757
Asset-backed securities		1,160		25		(10	)		1,175
Totals	$	605,877	$	5,582	$	(4,387	)	$	607,072

11

The gross unrealized gains and losses on, and the cost or amortized cost and fair value of, those investments classified as available-for-sale at June 30, 2018 are summarized as follows:

	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Fixed maturity:
States and political subdivisions	$	217,427	$	3,368	$	(2,495	)	$	218,300
Corporate bonds		144,950		60		(1,051	)		143,959
U.S. agency-based mortgage-backed securities		13,730		—		(368	)		13,362
U.S. Treasury securities and obligations    of U.S. government agencies		67,251		—		(2,110	)		65,141
Total fixed maturity		443,358		3,428		(6,024	)		440,762
Equity securities		13,590		—		—			13,590
Totals	$	456,948	$	3,428	$	(6,024	)	$	454,352

The gross unrealized gains and losses on, and the amortized cost and fair value of, those investments classified as held-to-maturity at December 31, 2017 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	460,428	$	9,628	$	(955	)	$	469,101
Corporate bonds		100,024		190		(167	)		100,047
U.S. agency-based mortgage-backed securities		10,260		625		(40	)		10,845
U.S. Treasury securities and obligations    of U.S. government agencies		57,657		548		(198	)		58,007
Asset-backed securities		1,299		25		(15	)		1,309
Totals	$	629,668	$	11,016	$	(1,375	)	$	639,309

The gross unrealized gains and losses on, and the cost or amortized cost and fair value of, those investments classified as available-for-sale at December 31, 2017 are summarized as follows:

	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Fixed maturity:
States and political subdivisions	$	244,898	$	6,819	$	(577	)	$	251,140
Corporate bonds		130,210		224		(212	)		130,222
U.S. agency-based mortgage-backed securities		18,813		—		(799	)		18,014
U.S. Treasury securities and obligations    of U.S. government agencies		67,315		29		(1,126	)		66,218
Total fixed maturity		461,236		7,072		(2,714	)		465,594
Equity securities		8,503		779		—			9,282
Totals	$	469,739	$	7,851	$	(2,714	)	$	474,876

12

A summary of the amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity at June 30, 2018, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	91,818	$	92,103
After one year through five years		252,775		252,787
After five years through ten years		90,966		91,281
After ten years		160,120		160,339
U.S. agency-based mortgage-backed securities		9,038		9,387
Asset-backed securities		1,160		1,175
Totals	$	605,877	$	607,072

A summary of the amortized cost and fair value of investments in fixed maturity securities, classified as available-for-sale at June 30, 2018, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	69,793	$	69,608
After one year through five years		158,974		156,733
After five years through ten years		32,366		31,784
After ten years		168,495		169,275
U.S. agency-based mortgage-backed securities		13,730		13,362
Totals	$	443,358	$	440,762

The following table summarizes the fair value and gross unrealized losses on securities, aggregated by major investment category and length of time that the individual securities have been in a continuous unrealized loss position:

	Less Than 12 Months				12 Months or Greater				Total
	Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses
	(in thousands)
June 30, 2018
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	204,459	$	2,568	$	12,424	$	323	$	216,883	$	2,891
Corporate bonds		86,816		703		2,237		21		89,053		724
U.S. agency-based mortgage-backed securities		2,524		71		—		—		2,524		71
U.S. Treasury securities and obligations    of U.S. government agencies		43,357		461		11,659		230		55,016		691
Asset-backed securities		565		10		—		—		565		10
Total held-to-maturity securities		337,721		3,813		26,320		574		364,041		4,387
Available-for-Sale
Fixed maturity securities:
States and political subdivisions	$	77,359	$	1,356	$	15,476	$	1,139	$	92,835	$	2,495
Corporate bonds		121,848		1,016		1,021		35		122,869		1,051
U.S. agency-based mortgage-backed securities		11,557		312		1,805		56		13,362		368
U.S. Treasury securities and obligations    of U.S. government agencies		18,071		630		47,070		1,480		65,141		2,110
Total available-for-sale securities		228,835		3,314		65,372		2,710		294,207		6,024
Total	$	566,556	$	7,127	$	91,692	$	3,284	$	658,248	$	10,411

13

	Less Than 12 Months				12 Months or Greater				Total
	Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses
	(in thousands)
December 31, 2017
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	110,698	$	654	$	19,895	$	301	$	130,593	$	955
Corporate bonds		56,425		156		4,121		11		60,546		167
U.S. agency-based mortgage-backed securities		2,798		40		—		—		2,798		40
U.S. Treasury securities and obligations    of U.S. government agencies		48,153		122		3,948		76		52,101		198
Asset-backed securities		—		—		967		15		967		15
Total held-to-maturity securities		218,074		972		28,931		403		247,005		1,375
Available-for-Sale
Fixed maturity securities:
States and political subdivisions	$	23,365	$	86	$	19,153	$	491	$	42,518	$	577
Corporate bonds		82,795		171		5,888		41		88,683		212
U.S. agency-based mortgage-backed securities		14,686		59		3,328		740		18,014		799
U.S. Treasury securities and obligations    of U.S. government agencies		14,730		204		47,716		922		62,446		1,126
Total available-for-sale securities		135,576		520		76,085		2,194		211,661		2,714
Total	$	353,650	$	1,492	$	105,016	$	2,597	$	458,666	$	4,089

At June 30, 2018, the Company held 419 individual fixed maturity securities that were in an unrealized loss position, of which 46 individual fixed maturity securities were in a continuous unrealized loss position for longer than 12 months.

Investment income is recognized as it is earned. The discount or premium on fixed maturity securities is amortized using the “constant yield” method. Anticipated prepayments, where applicable, are considered when determining the amortization of premiums or discounts. Realized investment gains and losses are determined using the specific identification method.

We regularly review our investment portfolio to evaluate the necessity of recording impairment losses for other-than-temporary declines in the fair value of specific investments. We consider various factors in determining if a decline in the fair value of an individual security is other-than-temporary. The key factors we consider are:

• any reduction or elimination of preferred dividends, or nonpayment of scheduled principal or interest payments;

• the financial condition and near-term prospects of the issuer of the applicable security, including any specific events that may affect its operations or earnings;

• how long and by how much the fair value of the security has been below its cost or amortized cost;

• any downgrades of the security by a rating agency;

• our intent not to sell the security for a sufficient time period for it to recover its value;

• the likelihood of being forced to sell the security before the recovery of its value; and

• an evaluation as to whether there are any credit losses on debt securities.

We reviewed all securities with unrealized losses in accordance with the impairment policy described above. The Company determined that the unrealized losses in the fixed maturity securities portfolio related primarily to changes in market interest rates since the date of purchase, current conditions in the capital markets and the impact of those conditions on market liquidity and prices generally. During the six months ended June 30, 2018, unrealized losses increased as rising interest rates decreased the fair value of securities held in the fixed maturity securities portfolio.  We expect to recover the carrying value of these securities as it is not more likely than not that we will be required to sell the securities before the recovery of the amortized cost basis.

14

During the six months ended June 30, 2018 and 2017, there were no impairment losses recognized for other-than-temporary declines in the fair value of our investments.

Net realized losses in the six months ended June 30, 2018 were $1.1 million resulting from the sale of fixed maturity securities classified as available-for-sale. Net realized losses in the six months ended June 30, 2017 were $0.6 million resulting from called fixed maturity securities.

Note 5. Income Taxes

In accordance with FASB ASC Topic 740, “Income Taxes,” we provide for the recognition and measurement of deferred income tax benefits based on the likelihood of their realization in future years. As of June 30, 2018, the Company had no material unrecognized tax benefits and no adjustments to liabilities or operations were required.

In December 2017, the Tax Act was signed into law making significant changes to the Internal Revenue Code.  Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017.  As a result, we recorded a decrease to our net deferred tax assets revalued at the new lower rate of 21% in the fourth quarter of 2017, the period in which the legislation was enacted.

The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. There were no uncertain tax positions recognized for the periods ended June 30, 2018 and 2017.

Tax years 2014 through 2017 are subject to examination by the federal and state taxing authorities.

Note 6. Loss Reserves

We record reserves for estimated losses under insurance policies that we write and for loss adjustment expenses related to the investigation and settlement of policy claims. Our reserves for loss and loss adjustment expenses represent the estimated cost of all reported and unreported loss and loss adjustment expenses incurred and unpaid as of a given point in time.  The reserves for loss and loss adjustment expenses are estimated using individual case-basis valuations, statistical analyses and estimates based upon experience for unreported claims and their associated loss and loss adjustment expenses. Such estimates may be more or less than the amounts ultimately paid when the claims are settled. The estimates are subject to the effects of trends in loss severity and frequency. Although considerable variability is inherent in these estimates, management believes that the reserves for loss and loss adjustment expenses are adequate. The estimates are continually reviewed and adjusted as necessary as experience develops or new information becomes known. Any adjustments are included in current operations.  See Note 9 to our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2017 for additional information regarding the Company’s loss and loss adjustment expense development.

15

The following table provides the Company’s liability for unpaid loss and loss adjustment expenses, net of related amounts recoverable from reinsurers, for the six months ended June 30, 2018 and 2017:

	Six Months Ended June 30,
	2018			2017
	(in thousands)
Balance, beginning of period	$	771,845		$	742,776
Less amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		84,889			78,256
Net balance, beginning of period		686,956			664,520
Add incurred related to:
Current accident year		126,060			119,828
Prior accident years		(20,822	)		(17,184	)
Total incurred		105,238			102,644
Less paid related to:
Current accident year		18,386			15,298
Prior accident years		84,194			80,571
Total paid		102,580			95,869
Net balance, end of period		689,614			671,295
Add amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		93,987			78,464
Balance, end of period	$	783,601		$	749,759

The foregoing reconciliation reflects favorable development of the net reserves at June 30, 2018 and June 30, 2017. The favorable development reduced loss and loss adjustment expenses incurred by $20.8 million and $17.2 million in 2018 and 2017, respectively. The revisions to the Company’s reserves reflect new information gained by claims adjusters in the normal course of adjusting claims and is reflected in the financial statements when the information becomes available. It is typical for more serious claims to take several years or longer to settle and the Company continually revises estimates as more information about claimants’ medical conditions and potential disability becomes known and the claims get closer to being settled.  Multiple factors can cause loss development both unfavorable and favorable. The favorable loss development we experienced across accident years was largely due to favorable case reserve development from closed claims and claims where the worker had reached maximum medical improvement.

Note 7. Comprehensive Income and Accumulated Other Comprehensive Income

Comprehensive income was $17.1 million for the three months ended June 30, 2018, compared to $17.4 million for the three months ended June 30, 2017.  Comprehensive income was $27.4 million for the six months ended June 30, 2018, compared to $31.9 million for the same period in 2017.  The difference between net income as reported and comprehensive income was due to changes in unrealized gains and losses, net of tax on available-for-sale debt securities.

Comprehensive income includes net income plus unrealized gains (losses) on our available-for-sale debt securities, net of tax. In reporting comprehensive income on a net basis in the statements of comprehensive income, we used a 21 percent tax rate in 2018 and a 35 percent tax rate in 2017. The following table illustrates the changes in the balance of each component of accumulated other comprehensive income for each period presented in the interim financial statements.

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(in thousands)
Beginning balance	$	(2,236	)	$	460		$	3,612		$	(492	)
Other comprehensive income (loss) before    reclassification		(449	)		2,038			(5,863	)		3,094
Amounts reclassified from accumulated other    comprehensive income		602			(82	)		168			(186	)
Net current period other comprehensive    income (loss)		153			1,956			(5,695	)		2,908
Ending balance	$	(2,083	)	$	2,416		$	(2,083	)	$	2,416

16

The sale or other-than-temporary impairment of an available-for-sale security results in amounts being reclassified from accumulated other comprehensive income to current period net income. The effects of reclassifications out of accumulated other comprehensive income by the respective line items of net income are presented in the following table.

Component of Accumulated Other	Three Months Ended						Six Months Ended						Affected line item in the
Comprehensive Income	June 30,						June 30,						statement of income
	2018			2017			2018			2017
	(in thousands)
Unrealized gains (losses) on    available-for-sale securities	$	(762	)	$	126		$	(466	)	$	286		Net realized losses on    investments
		(762	)		126			(466	)		286		Income before income taxes
		160			(44	)		44			(100	)	Income tax expense
	$	(602	)	$	82		$	(422	)	$	186		Net income

Note 8. Fair Value Measurements

The Company carries available-for-sale securities at fair value in our consolidated financial statements and determines fair value measurements and disclosure in accordance with FASB ASC Topic 820, Fair Value Measurements and Disclosures.

The Company determines the fair values of its financial instruments based on the fair value hierarchy established in ASC Topic 820, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard defines fair value, describes three levels of inputs that may be used to measure fair value, and expands disclosures about fair value measurements.

Fair value is defined in ASC Topic 820 as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is the price to sell an asset or transfer a liability and, therefore, represents an exit price, not an entry price. Fair value is the exit price in the principal market (or, if lacking a principal market, the most advantageous market) in which the reporting entity would transact. Fair value is a market-based measurement, not an entity-specific measurement, and, as such, is determined based on the assumptions that market participants would use in pricing the asset or liability. The exit price objective of a fair value measurement applies regardless of the reporting entity’s intent and/or ability to sell the asset or transfer the liability at the measurement date.

ASC Topic 820 requires the use of valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities. The income approach uses valuation techniques to convert future amounts, such as cash flows or earnings, to a single present value amount on a discounted basis. The cost approach is based on the amount that currently would be required to replace the service capacity of an asset, also known as current replacement cost. Valuation techniques used to measure fair value are to be consistently applied.

In ASC Topic 820, inputs refer broadly to the assumptions that market participants would use in pricing the asset or liability, including assumptions about risk, for example, the risk inherent in a particular valuation technique used to measure fair value (such as a pricing model) and/or the risk inherent in the inputs to the valuation technique. Inputs may be observable or unobservable:

• Observable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the reporting entity.

• Unobservable inputs are inputs that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances.

17

Valuation techniques used to measure fair value are intended to maximize the use of observable inputs and minimize the use of unobservable inputs. ASC Topic 820 establishes a fair value hierarchy that prioritizes the use of inputs used in valuation techniques into the following three levels:

• Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

• Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability, or inputs that are derived principally from or corroborated by observable market data.

• Level 3 inputs are unobservable inputs for the asset or liability. Unobservable inputs are to be used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date.

In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters.

The fair values of the Company’s investments are based upon prices provided by an independent pricing service. The Company has reviewed these prices for reasonableness and has not adjusted any prices received from the independent provider. Securities reported at fair value utilizing Level 1 inputs represent assets whose fair value is determined based upon observable unadjusted quoted market prices for identical assets in active markets. Level 2 securities represent assets whose fair value is determined using observable market information such as previous day trade prices, quotes from less active markets or quoted prices of securities with similar characteristics. There were no transfers between Level 1 and Level 2 during the six months ended June 30, 2018.

At June 30, 2018, assets measured at fair value on a recurring basis are summarized below:

	June 30, 2018
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Financial instruments carried at fair value, classified as a part of:
Securities available-for-sale—fixed maturity:
States and political subdivisions	$	—	$	218,300	$	—	$	218,300
Corporate bonds		—		143,959		—		143,959
U.S. agency-based mortgage-backed securities		—		13,362		—		13,362
U.S. Treasury securities		65,141		—		—		65,141
Total securities available-for-sale—fixed maturity		65,141		375,621		—		440,762
Securities available-for-sale—equity:
Domestic common stock		13,588		—		2		13,590
Total available-for-sale	$	78,729	$	375,621	$	2	$	454,352

At June 30, 2018, assets measured at amortized cost are summarized below:

	June 30, 2018
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Securities held-to-maturity—fixed maturity:
States and political subdivisions	$	—	$	434,737	$	—	$	434,737
Corporate bonds		—		98,016		—		98,016
U.S. agency-based mortgage-backed securities		—		9,387		—		9,387
U.S. Treasury securities		7,095		—		—		7,095
Obligations of U.S. government agencies		—		56,662		—		56,662
Asset-backed securities		—		1,175		—		1,175
Total held-to-maturity	$	7,095	$	599,977	$	—	$	607,072

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At December 31, 2017, assets measured at fair value on a recurring basis are summarized below:

	December 31, 2017
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Financial instruments carried at fair value, classified as part of:
Securities available-for-sale—fixed maturity:
States and political subdivisions	$	—	$	251,140	$	—	$	251,140
Corporate bonds		—		130,222		—		130,222
U.S. agency-based mortgage-backed securities		—		18,014		—		18,014
U.S. Treasury securities and obligations    of U.S. government agencies		66,218		—		—		66,218
Total available-for-sale—fixed maturity	$	66,218	$	399,376	$	—	$	465,594
Securities available-for-sale—equity:
Domestic common stock		9,248		—		34		9,282
Total available-for-sale	$	75,466	$	399,376	$	34	$	474,876

At December 31, 2017, assets measured at amortized cost are summarized below:

	December 31, 2017
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Securities held-to-maturity—fixed maturity:
States and political subdivisions	$	—	$	469,101	$	—	$	469,101
Corporate bonds		—		100,047		—		100,047
U.S. agency-based mortgage-backed securities		—		10,845		—		10,845
U.S. Treasury securities		6,750		—		—		6,750
Obligations of U.S. government agencies		—		51,257		—		51,257
Asset-backed securities		—		1,309		—		1,309
Total held-to-maturity	$	6,750	$	632,559	$	—	$	639,309

The Company determines fair value amounts for financial instruments using available third-party market information. When such information is not available, the Company determines the fair value amounts using appropriate valuation methodologies. Nonfinancial instruments such as real estate, property and equipment, deferred policy acquisition costs, deferred income taxes and loss and loss adjustment expense reserves are excluded from the fair value disclosure.

The following table presents summary information regarding changes in the fair value of assets measured at fair value using Level 3 input.

	Six Months Ended			Twelve Months Ended
	June 30, 2018			December 31, 2017
	(in thousands)
Balance, beginning of period	$	34		$	—
Transfer into Level 3		—			34
Unrealized loss on equity security		(32	)		—
Balance, end of period	$	2		$	34

At June 30, 2018, the Company held one security measured at fair value on a nonrecurring basis due to a recognized impairment of $100,000. The security was valued at fair value at the time of impairment and is currently being carried at the adjusted amortized cost value of $12,000 at June 30, 2018.  The security is valued using Level 2 inputs and had a fair value of $32,000 at June 30, 2018.

Cash and Cash Equivalents —The carrying amounts reported in the accompanying consolidated balance sheets for these financial instruments approximate their fair values, which are characterized as Level 1 assets.

19

Investments —The fair values for fixed maturity and equity securities are based on prices obtained from an independent pricing service. Equity and treasury securities are characterized as Level 1 assets, as their fair values are based on quoted prices in active markets. Fixed maturity securities, other than treasury securities, are characterized as Level 2 assets, as their fair values are determined using observable market inputs.

Short Term Investments —The carrying amounts reported in the accompanying consolidated balance sheets for these financial instruments approximate their fair values. These securities are characterized as Level 2 assets in the fair value hierarchy.

The following table summarizes the carrying values and corresponding fair values for financial instruments:

	As of  June 30, 2018				As of  December 31, 2017
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(in thousands)
Assets:
Fixed maturity securities—held-to-maturity	$	605,877	$	607,072	$	629,668	$	639,309
Fixed maturity securities—available-for-sale		440,762		440,762		465,594		465,594
Equity securities		13,590		13,590		9,282		9,282
Short-term investments		106,811		106,811		25,770		25,770
Cash and cash equivalents		21,176		21,176		55,559		55,559

Note 9. Treasury Stock

The Company’s Board of Directors initiated a share repurchase program in February 2010. In October 2016, the Board reauthorized this program with a limit of $25.0 million with no expiration date.  There were no shares repurchased under this program in the six months ended June 30, 2018 and 2017.

Note 10. Subsequent Events

On July 31, 2018, the Company’s Board of Directors declared a quarterly cash dividend of $0.22 per share payable on September 21, 2018 to shareholders of record as of September 7, 2018. The Board considers the payment of a regular cash dividend each calendar quarter.

20

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion should be read in conjunction with the accompanying unaudited condensed consolidated financial statements and the related notes included in Item 1 of Part I of this Quarterly Report on Form 10-Q, together with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in our Annual Report on Form 10-K for the year ended December 31, 2017.

We begin our discussion with an overview of our Company to give you an understanding of our business and the markets we serve. We then discuss our critical accounting policies. This is followed with a discussion of our results of operations for the three and six months ended June 30, 2018 and 2017. This discussion includes an analysis of certain significant period-to-period variances in our consolidated statements of operations. Our cash flows and financial condition are discussed under the caption “Liquidity and Capital Resources.”

Business Overview

AMERISAFE is a holding company that markets and underwrites workers’ compensation insurance through its insurance subsidiaries. Workers’ compensation insurance covers statutorily prescribed benefits that employers are obligated to provide to their employees who are injured in the course and scope of their employment. Our business strategy is focused on providing this coverage to small to mid-sized employers engaged in hazardous industries, principally construction, trucking, logging and lumber, manufacturing, and agriculture. Employers engaged in hazardous industries pay substantially higher than average rates for workers’ compensation insurance compared to employers in other industries, as measured per payroll dollar. The higher premium rates are due to the nature of the work performed and the inherent workplace danger of our target employers. Hazardous industry employers also tend to have less frequent but more severe claims as compared to employers in other industries due to the nature of their businesses. We provide proactive safety reviews of employers’ workplaces. These safety reviews are a vital component of our underwriting process and also promote safer workplaces. We utilize intensive claims management practices that we believe permit us to reduce the overall cost of our claims. In addition, our audit services ensure that our policyholders pay the appropriate premiums required under the terms of their policies and enable us to monitor payroll patterns that cause underwriting, safety or fraud concerns. We believe that the higher premiums typically paid by our policyholders, together with our disciplined underwriting and safety, claims and audit services, provide us with the opportunity to earn attractive returns for our shareholders.

We actively market our insurance in 27 states through independent agencies, as well as through our wholly owned insurance agency subsidiary. We are also licensed in an additional 20 states, the District of Columbia and the U.S. Virgin Islands.

Critical Accounting Policies

Understanding our accounting policies is key to understanding our financial statements. Management considers some of these policies to be very important to the presentation of our financial results because they require us to make significant estimates and assumptions. These estimates and assumptions affect the reported amounts of our assets, liabilities, revenues and expenses and related disclosures. Some of the estimates result from judgments that can be subjective and complex and, consequently, actual results in future periods might differ from these estimates.

Management believes that the most critical accounting policies relate to the reporting of reserves for loss and loss adjustment expenses, including losses that have occurred but have not been reported prior to the reporting date, amounts recoverable from reinsurers, premiums receivable, assessments, deferred policy acquisition costs, deferred income taxes, the impairment of investment securities and share-based compensation. These critical accounting policies are more fully described in Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our Annual Report on Form 10-K for the year ended December 31, 2017.

21

Results of Operations

The following table summarizes our consolidated financial results for the three and six months ended June 30, 2018 and 2017.

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(dollars in thousands, except per share data)
	(unaudited)
Gross premiums written	$	93,702		$	87,039		$	191,044		$	182,117
Net premiums earned		88,995			82,749			176,305			173,661
Net investment income		7,303			7,471			14,512			14,181
Total revenues		95,380			89,925			189,555			187,467
Total expenses		74,450			67,774			149,211			146,583
Net income		16,956			15,481			33,125			29,005
Diluted earnings per common share	$	0.88		$	0.81		$	1.72		$	1.51
Other Key Measures
Net combined ratio (1)		83.6	%		81.9	%		84.7	%		84.4	%
Return on average equity (2)		15.5	%		13.1	%		15.2	%		12.4	%
Book value per share (3)	$	23.11		$	25.02		$	23.11		$	25.02

(1) The net combined ratio is calculated by dividing the sum of loss and loss adjustment expenses incurred, underwriting and certain other operating costs, commissions, salaries and benefits, and policyholder dividends by net premiums earned in the current period.

(2) Return on average equity is calculated by dividing the annualized net income by the average shareholders’ equity for the applicable period.

(3) Book value per share is calculated by dividing shareholders’ equity by total outstanding shares, as of the end of the period.

Consolidated Results of Operations for Three Months Ended June 30, 2018 Compared to June 30, 2017

Gross Premiums Written. Gross premiums written for the quarter ended June 30, 2018 were $93.7 million, compared to $87.0 million for the same period in 2017, an increase of 7.7%. The increase was attributable to a $6.5 million increase in premiums resulting from payroll audits and related premium adjustments for policies written in previous quarters and a $0.5 million increase in assumed premium from mandatory pooling arrangements.  Offsetting these increases was a $0.4 million decrease in annual premiums on voluntary policies written during the period.  The effective loss cost multiplier, or ELCM, for our voluntary business was 1.66 for the second quarter ended June 30, 2018 compared to 1.68 for the same period in 2017.

Net Premiums Written. Net premiums written for the quarter ended June 30, 2018 were $91.3 million, compared to $84.8 million for the same period in 2017, an increase of 7.7%. The increase was primarily attributable to the increase in gross premiums written. As a percentage of gross premiums earned, ceded premiums were 2.6% for the second quarter of 2018 and 2017.  For additional information, see Item 1, “Business—Reinsurance” in our Annual Report on Form 10-K for the year ended December 31, 2017.

Net Premiums Earned. Net premiums earned for the second quarter of 2018 were $89.0 million, compared to $82.7 million for the same period in 2017, an increase of 7.5%. The increase was attributable to the increase in net premiums written in the quarter.

Net Investment Income. Net investment income for the quarter ended June 30, 2018 was $7.3 million, compared to $7.5 million for the same period in 2017. The decrease of $0.2 million was largely due to the change in value of an investment in a limited partnership hedge fund recorded in last year’s second quarter.  In last year’s second quarter, there was an increase in the value of the hedge fund.  The change in value of this investment was recorded in investment income.  Average invested assets, including cash and cash equivalents, were $1.2 billion in the quarter ended June 30, 2018 and 2017. The pre-tax investment yield on our investment portfolio was 2.5% and 2.6% per annum during the quarters ended June 30, 2018 and 2017, respectively. The tax-equivalent yield on our investment portfolio was 2.9% per annum for the quarter ended June 30, 2018 and 3.3% for the same period in 2017. The tax-equivalent yield is calculated using the effective interest rate and the appropriate marginal tax rate.

Net Realized Gains (Losses) on Investments. Net realized losses on investments for the three months ended June 30, 2018 totaled $1.1 million compared to net realized losses of $0.4 million for the same period in 2017. Net realized losses in the second quarter of 2018 were attributable to the sale of fixed maturity securities classified as available-for-sale.  Net realized losses in the second quarter of 2017 were attributable to called fixed maturity securities.

22

Net Unrealized Gains (Losses) on Equity Securities. Net unrealized gains on equity securities for the three months ended June 30, 2018 were $0.1 million and represent the change in fair value recognized in net income as a result of the adoption of ASU 2016-01 as further discussed in Note 1 above.

Loss and Loss Adjustment Expenses Incurred. Loss and loss adjustment expenses (“LAE”) incurred totaled $52.1 million for the three months ended June 30, 2018, compared to $46.4 million for the same period in 2017, an increase of $5.6 million, or 12.2%. The current accident year loss and LAE incurred were $63.6 million, or 71.5% of net premiums earned, compared to $57.1 million, or 69.0% of net premiums earned for the same period in 2017. We recorded favorable prior accident year development of $11.6 million in the second quarter of 2018, compared to favorable prior accident year development of $10.7 million in the same period of 2017, as further discussed below in “Prior Year Development.” Our net loss ratio was 58.5% in the second quarter of 2018, compared to 56.1% for the same period of 2017.

Underwriting and Certain Other Operating Costs, Commissions and Salaries and Benefits. Underwriting and certain other operating costs, commissions and salaries and benefits for the quarter ended June 30, 2018 were $21.3 million, compared to $20.2 million for the same period in 2017, an increase of 5.4%. This increase was primarily due to a $0.6 million increase in commission expense and a $0.5 million increase in premium taxes.  Offsetting these increases were a decrease of $0.4 million in insurance related assessments and a $0.2 million decrease in accounts receivable write-offs.  Our expense ratio was 23.9% in the second quarter of 2018 compared to 24.4% in the second quarter of 2017.

Income Tax Expense. Income tax expense for the three months ended June 30, 2018 was $4.0 million, compared to $6.7 million for the same period in 2017. The decrease was attributable to the lower federal corporate income tax rate of 21% compared to 35% in the same period of 2017 as well as a decrease in the pre-tax income to $20.9 million in the quarter ended June 30, 2018 from $22.2 million in the same period in 2017. The effective tax rate for the Company decreased to 19.0% in the quarter ended June 30, 2018 from 30.1% in the same period in 2017. The decrease in the effective tax rate resulted from the lower federal income tax rate and a slightly higher proportion of tax-exempt income to underwriting income in the quarter relative to the second quarter of 2017.

Consolidated Results of Operations for Six Months Ended June 30, 2018 Compared to June 30, 2017

Gross Premiums Written. Gross premiums written for the first six months of 2018 were $191.0 million, compared to $182.1 million for the same period in 2017, an increase of 4.9%. The increase was primarily attributable to a $7.5 million increase in premiums resulting from payroll audits and related premium adjustments for policies written in previous quarters and a $1.0 million increase in annual premiums on voluntary policies written during the period.  These increases were partially offset by a $3.4 million decrease in assumed premium from mandatory pooling arrangements.  The ELCM for our voluntary business was 1.64 for the six months ended June 30, 2018 compared to 1.67 for the same period in 2017.

Net Premiums Written. Net premiums written for the six months ended June 30, 2018 were $186.3 million, compared to $177.5 million for the same period in 2017, an increase of 5.0%. The increase was primarily attributable to the increase in gross premiums written. As a percentage of gross premiums earned, ceded premiums were 2.6% for the first six months of 2018 and 2017.  For additional information, see Item 1, “Business—Reinsurance” in our Annual Report on Form 10-K for the year ended December 31, 2017.

Net Premiums Earned. Net premiums earned for the first six months of 2018 were $176.3 million, compared to $173.7 million for the same period in 2017, an increase of 1.5%. The increase was attributable to the increase in net premiums written during the period.

Net Investment Income. Net investment income for the first six months of 2018 was $14.5 million, compared to $14.2 million for the same period in 2017, an increase of 2.3%. The increase was largely due to the change in value of an investment in a limited partnership hedge fund recorded in the prior year.  During the six months ended June 30, 2017, there was a decrease in value of the hedge fund.  The change in value of this investment was recorded in investment income.  Average invested assets, including cash and cash equivalents were $1.2 billion in the six months ended June 30, 2018 and 2017. The pre-tax investment yield on our investment portfolio was 2.4% per annum during the six months ended June 30, 2018 and 2017. The tax-equivalent yield on our investment portfolio was 2.9% per annum for the first six months of 2018 compared to 3.3% in the same period in 2017. The tax-equivalent yield is calculated using the effective interest rate and the appropriate marginal tax rate.

Net Realized Gains (Losses) on Investments. Net realized losses on investments for the six months ended June 30, 2018 totaled $1.1 million, compared to net realized losses of $0.6 million for the same period in 2017.  Net realized losses in the first six months of 2018 were attributable to the sale of fixed maturity securities classified as available-for-sale.   Net realized losses in the first six months of 2017 were attributable to called fixed maturity securities.

23

Net Unrealized Gains (Losses) on Equity Securities. Net unrealized losses on equity securities for the six months ended June 30, 2018 were $0.3 million and represent the change in fair value recognized in net income as a result of the adoption of ASU 2016-01 as further discussed in Note 1 above.

Loss and Loss Adjustment Expenses Incurred. Loss and LAE incurred totaled $105.2 million for the six months ended June 30, 2018, compared to $102.6 million for the same period in 2017, an increase of $2.6 million, or 2.5%. The current accident year loss and LAE incurred were $126.1 million, or 71.5% of net premiums earned, compared to $119.8 million, or 69.0% of net premiums earned, for the same period in 2017. We recorded favorable prior accident year development of $20.8 million in the first six months of 2018, compared to favorable prior accident year development of $17.2 million in the same period of 2017, as further discussed below in “Prior Year Development.” Our net loss ratio was 59.7% in the first six months of 2018, compared to 59.1% for the same period of 2017.

Underwriting and Certain Other Operating Costs, Commissions and Salaries and Benefits. Underwriting and certain other operating costs, commissions and salaries and benefits for the six months ended June 30, 2018 were $41.5 million, compared to $41.4 million for the same period in 2017, an increase of 0.3%. This increase was primarily due to a $1.5 million increase in premium taxes, a $0.7 million increase in commission expense and a $0.3 million change in reinsurance experience-rated commission.  Offsetting these increases were a $1.7 million decrease in insurance related assessments and a $0.6 million decrease in accounts receivable write-offs. Our expense ratio was 23.6% in the first six months of 2018 compared to 23.8% in the same period of 2017.

Income Tax Expense. Income tax expense for the six months ended June 30, 2018 was $7.2 million, compared to $11.9 million for the same period in 2017. The decrease was attributable to the lower federal corporate income tax rate of 21% compared to 35% in the same period of 2017 in addition to a decrease in pre-tax income to $40.3 million in the first six months of 2018 from $40.9 million in the first six months of 2017. The effective tax rate for the Company decreased to 17.9% for the six months ended June 30, 2018 from 29.1% for the six months ended June 30, 2017.  The decrease in the effective tax rate resulted largely from the lower federal income tax rate for the six months ended June 30, 2018 compared with the six months ended June 30, 2017.

Liquidity and Capital Resources

Our principal sources of operating funds are premiums, investment income and proceeds from sales and maturities of investments. Our primary uses of operating funds include payments of claims and operating expenses. Currently, we pay claims using cash flow from operations and invest the remaining funds.

Net cash provided by operating activities was $37.0 million for the six months ended June 30, 2018, which represented a $3.8 million decrease from $40.8 million in net cash provided by operating activities for the six months ended June 30, 2017. This decrease in operating cash flow was attributable to a $7.9 million increase in amounts held by others, a $6.4 million increase in losses paid and a $1.1 million decrease in investment income.  Offsetting these amounts were a $9.5 million decrease in federal taxes paid and a $2.1 million increase in premium collections.

Net cash used in investing activities was $62.8 million for the six months ended June 30, 2018, compared to net cash used in investment activities of $38.0 million for the same period in 2017. Cash provided by sales and maturities of investments totaled $132.8 million for the six months ended June 30, 2018, compared to $133.9 million for the same period in 2017. A total of $194.7 million in cash was used to purchase investments in the six months ended June 30, 2018, compared to $177.7 million in purchases for the same period in 2017.

Net cash used in financing activities in the six months ended June 30, 2018 was $8.6 million compared to net cash used in financing activities of $7.8 million for the same period in 2017. In the six months ended June 30, 2018, $8.6 million of cash was used for dividends paid to shareholders compared to $7.8 million in the same period of 2017. Proceeds from stock option exercises totaled $0.1 million in first half of 2018 compared to none in the same period in 2017.  

Investment Portfolio

Our investment portfolio, including cash and cash equivalents, totaled $1.2 billion at June 30, 2018 and December 31, 2017. Purchases of fixed maturity securities are classified as available-for-sale or held-to-maturity at the time of purchase based on the individual security. The reported value of our fixed maturity securities classified as held-to-maturity, as defined by FASB ASC Topic 320, Investments-Debt and Equity Securities, was equal to their amortized cost, and thus was not impacted by changing interest rates. Our equity securities and fixed maturity securities classified as available-for-sale were reported at fair value.

24

The composition of our investment portfolio, including cash and cash equivalents, as of June 30, 2018, is shown in the following table:

	Carrying Value		Percentage of Portfolio
	(in thousands)
Fixed maturity securities—held-to-maturity:
States and political subdivisions	$	432,914		36.4	%
Corporate bonds		98,702		8.3	%
U.S. agency-based mortgage-backed securities		9,038		0.8	%
U.S. Treasury securities and obligations of U.S. government agencies		64,063		5.4	%
Asset-backed securities		1,160		0.1	%
Total fixed maturity securities—held-to-maturity		605,877		51.0	%
Fixed maturity securities—available-for-sale:
States and political subdivisions		218,300		18.4	%
Corporate bonds		143,959		12.1	%
U.S. agency-based mortgage-backed securities		13,362		1.1	%
U.S. Treasury securities and obligations of U.S. government agencies		65,141		5.5	%
Total fixed maturity securities—available-for-sale		440,762		37.1	%
Equity securities		13,590		1.1	%
Short-term investments		106,811		9.0	%
Cash and cash equivalents		21,176		1.8	%
Total investments, including cash and cash equivalents	$	1,188,216		100.0	%

Our debt securities classified as available-for-sale are “marked to market” as of the end of each calendar quarter. As of that date, unrealized gains and losses are recorded to Accumulated Other Comprehensive Income (Loss), except when such securities are deemed to be other-than-temporarily impaired. For our securities classified as held-to-maturity, unrealized gains and losses are not recorded in the financial statements until realized or until a decline in fair value, below amortized cost, is deemed to be other-than-temporary.

During the three and six months ended June 30, 2018 and 2017, there were no impairment losses recognized for other-than-temporary declines in the fair value of our investments.

Prior Year Development

The Company recorded favorable prior accident year development of $11.6 million in the three months ended June 30, 2018. The table below sets forth the favorable development for the three and six months ended June 30, 2018 and 2017 for accident years 2013 through 2017 and, collectively, for all accident years prior to 2013.

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(in millions)
Accident Year
2017	$	—	$	—	$	—	$	—
2016		3.2		—		3.2		—
2015		3.4		4.3		9.4		4.3
2014		1.4		3.5		4.3		7.5
2013		1.7		1.5		1.7		3.9
Prior to 2013		1.9		1.4		2.2		1.5
Total net development	$	11.6	$	10.7	$	20.8	$	17.2

25

The table below sets forth the number of open claims as of June 30, 2018 and 2017, and the number of claims reported and closed during the three and six months then ended.

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Open claims at beginning of period		4,943			4,942			4,982			5,195
Claims reported		1,386			1,252			2,645			2,476
Claims closed		(1,307	)		(1,353	)		(2,605	)		(2,830	)
Open claims at end of period		5,022			4,841			5,022			4,841

The number of open claims at June 30, 2018 increased by 181 claims as compared to the number of open claims at June 30, 2017. At June 30, 2018, our incurred amounts for certain accident years, particularly 2016, 2015 and 2014, developed more favorably than management previously expected. The revisions to the Company’s reserves reflect new information gained by claims adjusters in the normal course of adjusting claims and is reflected in the financial statements when the information becomes available. It is typical for more serious claims to take several years or longer to settle and the Company continually revises estimates as more information about claimants’ medical conditions and potential disability becomes known and the claims get closer to being settled.  Multiple factors can cause both favorable and unfavorable loss development. The favorable loss development we experienced across accident years was largely due to favorable case reserve development from closed claims and claims where the worker had reached maximum medical improvement.

The assumptions we used in establishing our reserves were based on our historical claims data. However, as of June 30, 2018, actual results for certain accident years have been better than our assumptions would have predicted. We do not presently intend to modify our assumptions for establishing reserves in light of recent results. However, if actual results for current and future accident years are consistent with, or different than, our results in these recent accident years, our historical claims data will reflect this change and, over time, will impact the reserves we establish for future claims.

Our reserves for loss and loss adjustment expenses are inherently uncertain and our focus on providing workers’ compensation insurance to employers engaged in hazardous industries results in our receiving relatively fewer but more severe claims than many other workers’ compensation insurance companies. As a result of this focus on higher severity, lower frequency business, our reserve for loss and loss adjustment expenses may have greater volatility than other workers’ compensation insurance companies. For additional information, see Item 1, “Business—Loss Reserves” in our Annual Report on Form 10-K for the year ended December 31, 2017.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

Market risk is the risk of potential economic loss principally arising from adverse changes in the fair value of financial instruments. The major components of market risk affecting us are credit risk, interest rate risk and equity price risk. We currently have no exposure to foreign currency risk.

Since December 31, 2017, there have been no material changes in the quantitative or qualitative aspect of our market risk profile. For additional information regarding the Company’s exposure to certain market risks, see Item 7A, “Quantitative and Qualitative Disclosures About Market Risk” in our Annual Report on Form 10-K for the year ended December 31, 2017.

26

Item 4. Controls and Procedures.

Under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, we have evaluated the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of the end of the period covered by this report. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report to provide reasonable assurance that information we are required to disclose in reports that are filed or submitted under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the rules and forms specified by the SEC. We note that the design of any system of controls is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving the stated goals under all potential future conditions.

Because of its inherent limitations, management does not expect that our disclosure controls and procedures and our internal controls over financial reporting will prevent or detect all 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 policies and procedures may deteriorate. Any control system, no matter how well designed and operated, is based upon certain assumptions and can only provide reasonable, not absolute assurance that its objectives will be met. Further, no evaluation of controls can provide absolute assurance that misstatements due to errors or fraud will not occur or that all control issues and instances of fraud, if any within the Company, have been detected.

There have not been any changes in our internal control over financial reporting during the period covered by this report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

27

PART II—OTHER INFORMATION

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

The Board of Directors initially authorized the Company’s share repurchase program in February 2010. In October 2016, the Board reauthorized this program with no expiration date. As of June 30, 2018, we had repurchased a total of 1,258,250 shares of our outstanding common stock for $22.4 million.  The Company had $25.0 million available for future purchases at June 30, 2018 under this program.  There were no shares repurchased during the six months ended June 30, 2018 and 2017. The purchases may be effected from time to time depending upon market conditions and subject to applicable regulatory considerations.  It is anticipated that future purchases will be funded from available capital.  

Item 6. Exhibits.

Exhibit No.	Description
10.1	2018 Restated Non-Employee Director Restricted Stock Plan (incorporated by reference to Appendix A to the Company’s Proxy Statement on Schedule 14A filed April 29, 2016)
31.1	Certification of G. Janelle Frost filed pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of Neal A. Fuller filed pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	Certification of G. Janelle Frost and Neal A. Fuller filed pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

28

SIGNATURES

Pursuant to the requirements 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.

	AMERISAFE, INC.
August 3, 2018	/s/ G. Janelle Frost
	G. Janelle Frost
	President, Chief Executive Officer and Director
	(Principal Executive Officer)
August 3, 2018	/s/ Neal A. Fuller
	Neal A. Fuller
	Executive Vice President and Chief Financial Officer
	(Principal Financial and Accounting Officer)

29

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, G. Janelle Frost, certify that:

1. I have reviewed this quarterly report on Form 10-Q of AMERISAFE, Inc.;

2. 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;

3. 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;

4. The registrant’s other certifying officer(s) 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 most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) 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 control 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: August 3, 2018	/s/ G. Janelle Frost
	G. Janelle Frost
	President and Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Neal A. Fuller, certify that:

1. I have reviewed this quarterly report on Form 10-Q of AMERISAFE, Inc.;

2. 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;

3. 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;

4. The registrant’s other certifying officer(s) 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 most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) 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 control 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: August 3, 2018	/s/ Neal A. Fuller
	Neal A. Fuller
	Executive Vice President and Chief Financial Officer
	(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. § 1350,

AS ADOPTED PURSUANT TO § 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the filing of the Quarterly Report on Form 10-Q of AMERISAFE, Inc., a Texas corporation (the “Company”), for the quarter ended June 30, 2018, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned officers of the Company certifies, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to such officer’s knowledge:

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 as of the dates and for the periods expressed in the Report.

Date: August 3, 2018	/s/ G. Janelle Frost
	G. Janelle Frost
	President and Chief Executive Officer
	(Principal Executive Officer)
	/s/ Neal A. Fuller
	Neal A. Fuller
	Executive Vice President and Chief Financial Officer
	(Principal Financial Officer)

The foregoing certification is being furnished solely pursuant to 18 U.S.C. § 1350 and is not being filed as part of the Report or as a separate disclosure document.

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 01, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Trading Symbol	AMSF
Entity Registrant Name	AMERISAFE INC
Entity Central Index Key	0001018979
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		19,269,980

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Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Investments:
Fixed maturity securities—held-to-maturity, at amortized cost (fair value $607,072 and $639,309 in 2018 and 2017, respectively)	$ 605,877	$ 629,668
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	440,762	465,594
Equity securities—available-for-sale, at fair value (cost $13,590 and $8,503 in 2018 and 2017, respectively)	13,590	9,282
Short-term investments	106,811	25,770
Total investments	1,167,040	1,130,314
Cash and cash equivalents	21,176	55,559
Amounts recoverable from reinsurers	98,961	90,133
Premiums receivable, net of allowance	189,892	174,234
Deferred income taxes	19,891	19,262
Accrued interest receivable	10,458	10,635
Property and equipment, net	6,644	6,128
Deferred policy acquisition costs	21,601	20,251
Federal income tax recoverable	1,205	1,761
Other assets	17,413	9,959
Total assets	1,554,281	1,518,236
Liabilities:
Reserves for loss and loss adjustment expenses	783,601	771,845
Unearned premiums	167,310	157,270
Amounts held for others	39,103	36,908
Policyholder deposits	47,956	48,364
Insurance-related assessments	30,070	28,246
Accounts payable and other liabilities	38,441	37,076
Payable for investments purchased	2,409	13,104
Total liabilities	1,108,890	1,092,813
Shareholders’ equity:
Common stock: voting—$0.01 par value authorized shares—50,000,000 in 2018 and 2017; 20,528,230 and 20,504,165 shares issued and 19,269,980 and 19,245,915 shares outstanding in 2018 and 2017, respectively	205	204
Additional paid-in capital	210,895	210,081
Treasury stock, at cost (1,258,250 shares in 2018 and 2017)	(22,370)	(22,370)
Accumulated earnings	258,744	233,896
Accumulated other comprehensive income (loss), net	(2,083)	3,612
Total shareholders’ equity	445,391	425,423
Total liabilities and shareholders’ equity	$ 1,554,281	$ 1,518,236

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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Fixed maturity securities, fair value	$ 607,072	$ 639,309
Fixed maturity securities, cost	443,358	461,236
Equity securities, cost	$ 13,590	$ 8,503
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	20,528,230	20,504,165
Common stock, shares outstanding	19,269,980	19,245,915
Treasury stock, shares	1,258,250	1,258,250

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Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Gross premiums written	$ 93,702	$ 87,039	$ 191,044	$ 182,117
Ceded premiums written	(2,369)	(2,198)	(4,699)	(4,589)
Net premiums written	91,333	84,841	186,345	177,528
Net premiums earned	88,995	82,749	176,305	173,661
Net investment income	7,303	7,471	14,512	14,181
Net realized losses on investments	(1,111)	(388)	(1,142)	(569)
Net unrealized gains (losses) on equity securities	76		(314)
Fee and other income	117	93	194	194
Total revenues	95,380	89,925	189,555	187,467
Expenses
Loss and loss adjustment expenses incurred	52,076	46,428	105,238	102,644
Underwriting and certain other operating costs	7,985	7,645	15,831	16,145
Commissions	6,616	5,984	13,110	12,394
Salaries and benefits	6,681	6,554	12,607	12,866
Policyholder dividends	1,092	1,163	2,425	2,534
Total expenses	74,450	67,774	149,211	146,583
Income before income taxes	20,930	22,151	40,344	40,884
Income tax expense	3,974	6,670	7,219	11,879
Net income	$ 16,956	$ 15,481	$ 33,125	$ 29,005
Earnings per share
Basic	$ 0.88	$ 0.81	$ 1.73	$ 1.51
Diluted	$ 0.88	$ 0.81	$ 1.72	$ 1.51
Shares used in computing earnings per share
Basic	19,208,601	19,162,049	19,197,925	19,156,250
Diluted	19,266,735	19,227,960	19,275,883	19,227,997
Cash dividends declared per common share	$ 0.22	$ 0.20	$ 0.44	$ 0.40

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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 16,956	$ 15,481	$ 33,125	$ 29,005
Other comprehensive income:
Unrealized gain (loss) on securities, net of tax	[1]	153	1,956	(5,695)	2,908
Comprehensive income		$ 17,109	$ 17,437	$ 27,430	$ 31,913

[1] Data presented for 2018 includes debt securities only compared to 2017 which includes both debt and equity securities.

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Condensed Consolidated Statement of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2016						$ (492)
Comprehensive income	$ 31,913
Common stock issued upon exercise of options, Shares	0
Ending Balance at Jun. 30, 2017						2,416
Beginning Balance at Mar. 31, 2017						460
Comprehensive income	$ 17,437
Ending Balance at Jun. 30, 2017						2,416
Beginning Balance at Dec. 31, 2017	$ 425,423	$ 204	$ 210,081	$ (22,370)	$ 233,896	3,612
Beginning Balance, Shares at Dec. 31, 2017	20,504,165	20,504,165
Treasury Stock Beginning Balance, Shares at Dec. 31, 2017	(1,258,250)			(1,258,250)
Comprehensive income	$ 27,430				33,125	(5,695)
Impact of adoption of ASU | ASU 2016-01 [Member]	614				614
Impact of adoption of ASU | ASU 2018-02 [Member]	(414)				(414)
Common stock issued upon exercise of options	$ 67		67
Common stock issued upon exercise of options, Shares	15,000	15,000
Common stock issued	$ 196	$ 1	195
Common stock issued, Shares		9,065
Share-based compensation	552		552
Dividends to shareholders	(8,477)				(8,477)
Ending Balance at Jun. 30, 2018	$ 445,391	$ 205	210,895	$ (22,370)	258,744	(2,083)
Ending Balance, Shares at Jun. 30, 2018	20,528,230	20,528,230
Treasury Stock Ending Balance, Shares at Jun. 30, 2018	(1,258,250)			(1,258,250)
Beginning Balance at Mar. 31, 2018						(2,236)
Comprehensive income	$ 17,109
Ending Balance at Jun. 30, 2018	$ 445,391	$ 205	$ 210,895	$ (22,370)	$ 258,744	$ (2,083)
Ending Balance, Shares at Jun. 30, 2018	20,528,230	20,528,230
Treasury Stock Ending Balance, Shares at Jun. 30, 2018	(1,258,250)			(1,258,250)

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities
Net income	$ 33,125	$ 29,005
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	488	529
Net amortization of investments	5,979	7,394
Deferred income taxes	831	302
Net realized losses on investments	1,142	569
Net unrealized losses on equity securities	314
Net realized losses on disposal of assets		2
Share-based compensation	782	937
Changes in operating assets and liabilities:
Premiums receivable, net	(15,658)	(7,641)
Accrued interest receivable	177	153
Deferred policy acquisition costs	(1,350)	(1,582)
Amounts held by others	(7,855)
Other assets	942	(1,900)
Reserves for loss and loss adjustment expenses	11,756	6,983
Unearned premiums	10,040	3,867
Reinsurance balances	(8,828)	(509)
Amounts held for others and policyholder deposits	1,787	1,882
Accounts payable and other liabilities	3,312	807
Net cash provided by operating activities	36,984	40,798
Investing activities
Purchases of investments held-to-maturity	(38,129)	(96,697)
Purchases of investments available-for-sale	(56,550)	(50,193)
Purchases of short-term investments	(100,059)	(30,800)
Proceeds from maturities of investments held-to-maturity	52,584	66,276
Proceeds from sales and maturities of investments available-for-sale	66,762	54,062
Proceeds from sales and maturities of short-term investments	13,465	13,610
Proceeds from redemptions of other investments	130	6,000
Purchases of property and equipment	(1,004)	(240)
Net cash used in investing activities	(62,801)	(37,982)
Financing activities
Proceeds from stock option exercises	67
Dividends to shareholders	(8,633)	(7,785)
Net cash used in financing activities	(8,566)	(7,785)
Change in cash and cash equivalents	(34,383)	(4,969)
Cash and cash equivalents at beginning of period	55,559	58,936
Cash and cash equivalents at end of period	$ 21,176	$ 53,967

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Basis of Presentation

6 Months Ended

Jun. 30, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Basis of Presentation

Note 1. Basis of Presentation

AMERISAFE, Inc. (the “Company”) is an insurance holding company incorporated in the state of Texas. The accompanying unaudited condensed consolidated financial statements include the accounts of AMERISAFE and its subsidiaries: American Interstate Insurance Company (“AIIC”) and its insurance subsidiaries, Silver Oak Casualty, Inc. (“SOCI”) and American Interstate Insurance Company of Texas (“AIICTX”), Amerisafe Risk Services, Inc. (“RISK”) and Amerisafe General Agency, Inc. (“AGAI”). AIIC and SOCI are property and casualty insurance companies organized under the laws of the state of Nebraska. AIICTX is a property and casualty insurance company organized under the laws of the state of Texas. RISK, a wholly owned subsidiary of the Company, is a claims and safety service company currently servicing only affiliated insurance companies. AGAI, a wholly owned subsidiary of the Company, is a general agent for the Company. AGAI sells insurance, which is underwritten by AIIC, SOCI and AIICTX, as well as by nonaffiliated insurance carriers. The assets and operations of AGAI are not significant to that of the Company and its consolidated subsidiaries.

The terms “AMERISAFE,” the “Company,” “we,” “us” or “our” refer to AMERISAFE, Inc. and its consolidated subsidiaries, as the context requires.

The Company provides workers’ compensation insurance for small to mid-sized employers engaged in hazardous industries, principally construction, trucking, logging and lumber, manufacturing, and agriculture. Assets and revenues of AIIC represent at least 95% of comparable consolidated amounts of the Company for each of the six months ended June 30, 2018 and 2017.

In the opinion of management of the Company, the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting of normal recurring accruals) necessary to present fairly the financial position, the results of operations and cash flows for the periods presented. The unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q under the Securities Exchange Act of 1934 and therefore do not include all information and footnotes to be in conformity with accounting principles generally accepted in the United States (“GAAP”). The results for the interim periods are not necessarily indicative of the results of operations that may be expected for the year. The unaudited condensed consolidated financial statements contained herein should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017.

The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Adopted Accounting Guidance

In January 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-01, Financial Instruments – Overall (Subtopic 825-10):  Recognition and Measurement of Financial Assets and Financial Liabilities.  This guidance requires fair value measurement for equity investments (not including those that result in consolidation of the investee or use the equity method of accounting) and the recognition of changes in fair value to be presented as a component of net income.  The guidance also revises the disclosure requirements related to fair value changes of liabilities presented in comprehensive income, eliminates disclosure related to the methods and assumptions underlying fair value for financial instruments measured at amortized cost, and simplifies impairment assessments for equity investments without readily determinable fair values.  The adoption of this new guidance in the first quarter of 2018 resulted in an immaterial decrease in net income of $390 thousand or a $0.02 decrease in our diluted earnings per common share.  

In May 2014, the FASB issued ASU 2014-09 (Topic 606): Revenue from Contracts with Customers.  The guidance revises the criteria for revenue recognition and requires that the revenue recognized reflect the transfer of promised goods or services to customers in an amount that represents the consideration to which the entity expects to be entitled in exchange for those goods or services.  The standard was effective for us in the first quarter of 2018.  The adoption of the new guidance had no impact on the Company's reporting and disclosure of net premiums earned, net investment income or net realized gains and losses, as these items are not within the scope of this new guidance. The remaining revenue sources are immaterial and not impacted by the new standard.

In February 2018, the FASB issued ASU 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220).  This ASU provided new guidance on reclassification from Other Comprehensive Income (“OCI”) of tax effects related to the recently passed tax reform legislation (the “Tax Act”).  The guidance gives entities the option to reclassify to retained earnings tax effects related to items in accumulated OCI deemed to be stranded as a result of tax reform.  The guidance was effective for us in the first quarter of 2018 and was applied retrospectively.  The Company’s policy for releasing income tax effects from accumulated OCI was the individual securities approach for available-for-sale securities.  The adoption of this guidance did not have a material impact on our financial condition and results of operations.

In December 2017, the SEC issued Staff Accounting Bulletin (SAB) 118 which provided guidance on accounting for tax effects of the Tax Act.  Among many changes of the Tax Act which affected Property and Casualty Insurers, the Tax Act required property and casualty taxpayers to discount loss reserves based solely on IRS factors and no longer by reference to historical payment patterns.  As the IRS has yet to release the 2018 discount factors, we have used the 2017 IRS discount factors to estimate the impact of the change in loss reserve discounting factors and adjusted our deferred tax balances for the impact of these changes.  Once the IRS has released the 2018 loss reserve discount factors, we will complete our analysis and include the effect of the difference in the reserve discount factors in the period the analysis is complete or the impact is reasonably estimable.

Prospective Accounting Guidance

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842).  Under current guidance for lessees, leases are only included on the balance sheet if certain criteria, classifying the contract as a capital lease, are met.  The new guidance requires a lessee to recognize a lease liability and a right of use asset for all leases extending beyond twelve months.  The new guidance is effective for us in the first quarter of 2019.  Upon adoption, leases will be recognized and measured at the beginning of the earliest period presented using a modified retrospective approach.  Adoption of the guidance is not expected to have a material effect on the Company’s consolidated financial statements as the Company does not have any significant leases.  

In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses.  The new guidance replaces the methodology of credit loss impairment, which currently, delays the recognition of credit losses until a probable loss has been incurred.  The new guidance requires credit losses for securities measured at amortized cost to be determined using current expected credit loss estimates.  These estimates are to be derived from historical, current and reasonable supporting forecasts, including prepayments and estimates, and will be recorded through a valuation allowance account that will run through the income statement.  The same method will be used for available-for-sale securities, but the valuation allowance will be limited to the amount by which the fair value is below amortized cost.  The standard is effective for us in the first quarter of 2020.  The Company will continue to monitor and evaluate the impact as the implementation date approaches.

All other issued but not yet effective accounting and reporting standards as of June 30, 2018 are either not applicable to the Company or are not expected to have a material impact on the Company.

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Stock Options and Restricted Stock

6 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Options and Restricted Stock

Note 2. Stock Options and Restricted Stock

As of June 30, 2018, the Company has three equity incentive plans: the AMERISAFE 2005 Equity Incentive Plan (the “2005 Incentive Plan”), the AMERISAFE Non-Employee Director Restricted Stock Plan (the “Restricted Stock Plan”) and the AMERISAFE 2012 Equity and Incentive Compensation Plan (the “2012 Incentive Plan”). In connection with the approval of the 2012 Incentive Plan by the Company’s shareholders, no further grants will be made under the 2005 Incentive Plan.  All grants made under the 2005 Incentive plan continue in effect, subject to the terms and conditions of the 2005 Incentive Plan. See Note 12 to our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2017 for additional information regarding the Company’s incentive plans.

During the six months ended June 30, 2018, the Company granted 3,304 shares of common stock to executive officers and 5,761 shares of restricted common stock to non-employee directors.  The market value of the shares granted totaled $0.5 million.  During the six months ended June 30, 2017, the Company granted 7,434 shares of common stock to executive officers and 6,454 shares of restricted common stock to non-employee directors. The market value of the shares granted totaled $0.7 million.

During the six months ended June 30, 2018, options to purchase 15,000 shares of common stock were exercised. In connection with these exercises, the Company received $0.1 million of stock option proceeds.  During the six months ended June 30, 2017, no options to purchase shares of common stock were exercised.

The Company recognized share-based compensation expense of $0.8 million in the quarter ended June 30, 2018 compared to $0.5 million for the same period in 2017.  The Company recognized share-based compensation expense of $0.8 million in the six months ended June 30, 2018 and $0.9 million for the same period in 2017.

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Earnings Per Share

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Earnings Per Share

Note 3. Earnings Per Share

The Company computes earnings per share (“EPS”) in accordance with FASB Accounting Standards Codification (“ASC”) Topic 260, Earnings Per Share. The Company has no participating unvested common shares which contain nonforfeitable rights to dividends and applies the treasury stock method in computing basic and diluted earnings per share.

Basic EPS is calculated by dividing net income by the weighted-average number of common shares outstanding during the period.

The diluted EPS calculation includes potential common shares assumed issued under the treasury stock method, which reflects the potential dilution that would occur if any outstanding options were exercised or restricted stock becomes vested.

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
	(in thousands, except share and per share amounts)
Basic EPS:
Net income - basic	$	16,956	$	15,481	$	33,125	$	29,005
Basic weighted average common shares		19,208,601		19,162,049		19,197,925		19,156,250
Basic earnings per common share	$	0.88	$	0.81	$	1.73	$	1.51
Diluted EPS:
Net income - diluted	$	16,956	$	15,481	$	33,125	$	29,005
Diluted weighted average common shares:
Weighted average common shares		19,208,601		19,162,049		19,197,925		19,156,250
Stock options and restricted stock		58,134		65,911		77,958		71,747
Diluted weighted average common shares		19,266,735		19,227,960		19,275,883		19,227,997
Diluted earnings per common share	$	0.88	$	0.81	$	1.72	$	1.51

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Investments

6 Months Ended

Jun. 30, 2018

Investments Debt And Equity Securities [Abstract]

Investments

Note 4. Investments

The gross unrealized gains and losses on, and the amortized cost and fair value of, those investments classified as held-to-maturity at June 30, 2018 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	432,914	$	4,714	$	(2,891	)	$	434,737
Corporate bonds		98,702		38		(724	)		98,016
U.S. agency-based mortgage-backed securities		9,038		420		(71	)		9,387
U.S. Treasury securities and obligations of U.S.    government agencies		64,063		385		(691	)		63,757
Asset-backed securities		1,160		25		(10	)		1,175
Totals	$	605,877	$	5,582	$	(4,387	)	$	607,072

The gross unrealized gains and losses on, and the cost or amortized cost and fair value of, those investments classified as available-for-sale at June 30, 2018 are summarized as follows:

	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Fixed maturity:
States and political subdivisions	$	217,427	$	3,368	$	(2,495	)	$	218,300
Corporate bonds		144,950		60		(1,051	)		143,959
U.S. agency-based mortgage-backed securities		13,730		—		(368	)		13,362
U.S. Treasury securities and obligations    of U.S. government agencies		67,251		—		(2,110	)		65,141
Total fixed maturity		443,358		3,428		(6,024	)		440,762
Equity securities		13,590		—		—			13,590
Totals	$	456,948	$	3,428	$	(6,024	)	$	454,352

The gross unrealized gains and losses on, and the amortized cost and fair value of, those investments classified as held-to-maturity at December 31, 2017 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	460,428	$	9,628	$	(955	)	$	469,101
Corporate bonds		100,024		190		(167	)		100,047
U.S. agency-based mortgage-backed securities		10,260		625		(40	)		10,845
U.S. Treasury securities and obligations    of U.S. government agencies		57,657		548		(198	)		58,007
Asset-backed securities		1,299		25		(15	)		1,309
Totals	$	629,668	$	11,016	$	(1,375	)	$	639,309

The gross unrealized gains and losses on, and the cost or amortized cost and fair value of, those investments classified as available-for-sale at December 31, 2017 are summarized as follows:

	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Fixed maturity:
States and political subdivisions	$	244,898	$	6,819	$	(577	)	$	251,140
Corporate bonds		130,210		224		(212	)		130,222
U.S. agency-based mortgage-backed securities		18,813		—		(799	)		18,014
U.S. Treasury securities and obligations    of U.S. government agencies		67,315		29		(1,126	)		66,218
Total fixed maturity		461,236		7,072		(2,714	)		465,594
Equity securities		8,503		779		—			9,282
Totals	$	469,739	$	7,851	$	(2,714	)	$	474,876

A summary of the amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity at June 30, 2018, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	91,818	$	92,103
After one year through five years		252,775		252,787
After five years through ten years		90,966		91,281
After ten years		160,120		160,339
U.S. agency-based mortgage-backed securities		9,038		9,387
Asset-backed securities		1,160		1,175
Totals	$	605,877	$	607,072

A summary of the amortized cost and fair value of investments in fixed maturity securities, classified as available-for-sale at June 30, 2018, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	69,793	$	69,608
After one year through five years		158,974		156,733
After five years through ten years		32,366		31,784
After ten years		168,495		169,275
U.S. agency-based mortgage-backed securities		13,730		13,362
Totals	$	443,358	$	440,762

The following table summarizes the fair value and gross unrealized losses on securities, aggregated by major investment category and length of time that the individual securities have been in a continuous unrealized loss position:

	Less Than 12 Months				12 Months or Greater				Total
	Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses
	(in thousands)
June 30, 2018
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	204,459	$	2,568	$	12,424	$	323	$	216,883	$	2,891
Corporate bonds		86,816		703		2,237		21		89,053		724
U.S. agency-based mortgage-backed securities		2,524		71		—		—		2,524		71
U.S. Treasury securities and obligations    of U.S. government agencies		43,357		461		11,659		230		55,016		691
Asset-backed securities		565		10		—		—		565		10
Total held-to-maturity securities		337,721		3,813		26,320		574		364,041		4,387
Available-for-Sale
Fixed maturity securities:
States and political subdivisions	$	77,359	$	1,356	$	15,476	$	1,139	$	92,835	$	2,495
Corporate bonds		121,848		1,016		1,021		35		122,869		1,051
U.S. agency-based mortgage-backed securities		11,557		312		1,805		56		13,362		368
U.S. Treasury securities and obligations    of U.S. government agencies		18,071		630		47,070		1,480		65,141		2,110
Total available-for-sale securities		228,835		3,314		65,372		2,710		294,207		6,024
Total	$	566,556	$	7,127	$	91,692	$	3,284	$	658,248	$	10,411

	Less Than 12 Months				12 Months or Greater				Total
	Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses
	(in thousands)
December 31, 2017
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	110,698	$	654	$	19,895	$	301	$	130,593	$	955
Corporate bonds		56,425		156		4,121		11		60,546		167
U.S. agency-based mortgage-backed securities		2,798		40		—		—		2,798		40
U.S. Treasury securities and obligations    of U.S. government agencies		48,153		122		3,948		76		52,101		198
Asset-backed securities		—		—		967		15		967		15
Total held-to-maturity securities		218,074		972		28,931		403		247,005		1,375
Available-for-Sale
Fixed maturity securities:
States and political subdivisions	$	23,365	$	86	$	19,153	$	491	$	42,518	$	577
Corporate bonds		82,795		171		5,888		41		88,683		212
U.S. agency-based mortgage-backed securities		14,686		59		3,328		740		18,014		799
U.S. Treasury securities and obligations    of U.S. government agencies		14,730		204		47,716		922		62,446		1,126
Total available-for-sale securities		135,576		520		76,085		2,194		211,661		2,714
Total	$	353,650	$	1,492	$	105,016	$	2,597	$	458,666	$	4,089

At June 30, 2018, the Company held 419 individual fixed maturity securities that were in an unrealized loss position, of which 46 individual fixed maturity securities were in a continuous unrealized loss position for longer than 12 months.

Investment income is recognized as it is earned. The discount or premium on fixed maturity securities is amortized using the “constant yield” method. Anticipated prepayments, where applicable, are considered when determining the amortization of premiums or discounts. Realized investment gains and losses are determined using the specific identification method.

We regularly review our investment portfolio to evaluate the necessity of recording impairment losses for other-than-temporary declines in the fair value of specific investments. We consider various factors in determining if a decline in the fair value of an individual security is other-than-temporary. The key factors we consider are:

• any reduction or elimination of preferred dividends, or nonpayment of scheduled principal or interest payments;

• the financial condition and near-term prospects of the issuer of the applicable security, including any specific events that may affect its operations or earnings;

• how long and by how much the fair value of the security has been below its cost or amortized cost;

• any downgrades of the security by a rating agency;

• our intent not to sell the security for a sufficient time period for it to recover its value;

• the likelihood of being forced to sell the security before the recovery of its value; and

• an evaluation as to whether there are any credit losses on debt securities.

We reviewed all securities with unrealized losses in accordance with the impairment policy described above. The Company determined that the unrealized losses in the fixed maturity securities portfolio related primarily to changes in market interest rates since the date of purchase, current conditions in the capital markets and the impact of those conditions on market liquidity and prices generally. During the six months ended June 30, 2018, unrealized losses increased as rising interest rates decreased the fair value of securities held in the fixed maturity securities portfolio.  We expect to recover the carrying value of these securities as it is not more likely than not that we will be required to sell the securities before the recovery of the amortized cost basis.

During the six months ended June 30, 2018 and 2017, there were no impairment losses recognized for other-than-temporary declines in the fair value of our investments.

Net realized losses in the six months ended June 30, 2018 were $1.1 million resulting from the sale of fixed maturity securities classified as available-for-sale. Net realized losses in the six months ended June 30, 2017 were $0.6 million resulting from called fixed maturity securities.

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Income Taxes

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Note 5. Income Taxes

In accordance with FASB ASC Topic 740, “Income Taxes,” we provide for the recognition and measurement of deferred income tax benefits based on the likelihood of their realization in future years. As of June 30, 2018, the Company had no material unrecognized tax benefits and no adjustments to liabilities or operations were required.

In December 2017, the Tax Act was signed into law making significant changes to the Internal Revenue Code.  Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017.  As a result, we recorded a decrease to our net deferred tax assets revalued at the new lower rate of 21% in the fourth quarter of 2017, the period in which the legislation was enacted.

The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. There were no uncertain tax positions recognized for the periods ended June 30, 2018 and 2017.

Tax years 2014 through 2017 are subject to examination by the federal and state taxing authorities.

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Loss Reserves

6 Months Ended

Jun. 30, 2018

Insurance [Abstract]

Loss Reserves

Note 6. Loss Reserves

We record reserves for estimated losses under insurance policies that we write and for loss adjustment expenses related to the investigation and settlement of policy claims. Our reserves for loss and loss adjustment expenses represent the estimated cost of all reported and unreported loss and loss adjustment expenses incurred and unpaid as of a given point in time.  The reserves for loss and loss adjustment expenses are estimated using individual case-basis valuations, statistical analyses and estimates based upon experience for unreported claims and their associated loss and loss adjustment expenses. Such estimates may be more or less than the amounts ultimately paid when the claims are settled. The estimates are subject to the effects of trends in loss severity and frequency. Although considerable variability is inherent in these estimates, management believes that the reserves for loss and loss adjustment expenses are adequate. The estimates are continually reviewed and adjusted as necessary as experience develops or new information becomes known. Any adjustments are included in current operations.  See Note 9 to our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2017 for additional information regarding the Company’s loss and loss adjustment expense development.

The following table provides the Company’s liability for unpaid loss and loss adjustment expenses, net of related amounts recoverable from reinsurers, for the six months ended June 30, 2018 and 2017:

	Six Months Ended June 30,
	2018			2017
	(in thousands)
Balance, beginning of period	$	771,845		$	742,776
Less amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		84,889			78,256
Net balance, beginning of period		686,956			664,520
Add incurred related to:
Current accident year		126,060			119,828
Prior accident years		(20,822	)		(17,184	)
Total incurred		105,238			102,644
Less paid related to:
Current accident year		18,386			15,298
Prior accident years		84,194			80,571
Total paid		102,580			95,869
Net balance, end of period		689,614			671,295
Add amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		93,987			78,464
Balance, end of period	$	783,601		$	749,759

The foregoing reconciliation reflects favorable development of the net reserves at June 30, 2018 and June 30, 2017. The favorable development reduced loss and loss adjustment expenses incurred by $20.8 million and $17.2 million in 2018 and 2017, respectively. The revisions to the Company’s reserves reflect new information gained by claims adjusters in the normal course of adjusting claims and is reflected in the financial statements when the information becomes available. It is typical for more serious claims to take several years or longer to settle and the Company continually revises estimates as more information about claimants’ medical conditions and potential disability becomes known and the claims get closer to being settled.  Multiple factors can cause loss development both unfavorable and favorable. The favorable loss development we experienced across accident years was largely due to favorable case reserve development from closed claims and claims where the worker had reached maximum medical improvement.

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Comprehensive Income and Accumulated Other Comprehensive Income

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Comprehensive Income and Accumulated Other Comprehensive Income

Note 7. Comprehensive Income and Accumulated Other Comprehensive Income

Comprehensive income was $17.1 million for the three months ended June 30, 2018, compared to $17.4 million for the three months ended June 30, 2017.  Comprehensive income was $27.4 million for the six months ended June 30, 2018, compared to $31.9 million for the same period in 2017.  The difference between net income as reported and comprehensive income was due to changes in unrealized gains and losses, net of tax on available-for-sale debt securities.

Comprehensive income includes net income plus unrealized gains (losses) on our available-for-sale debt securities, net of tax. In reporting comprehensive income on a net basis in the statements of comprehensive income, we used a 21 percent tax rate in 2018 and a 35 percent tax rate in 2017. The following table illustrates the changes in the balance of each component of accumulated other comprehensive income for each period presented in the interim financial statements.

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(in thousands)
Beginning balance	$	(2,236	)	$	460		$	3,612		$	(492	)
Other comprehensive income (loss) before    reclassification		(449	)		2,038			(5,863	)		3,094
Amounts reclassified from accumulated other    comprehensive income		602			(82	)		168			(186	)
Net current period other comprehensive    income (loss)		153			1,956			(5,695	)		2,908
Ending balance	$	(2,083	)	$	2,416		$	(2,083	)	$	2,416

The sale or other-than-temporary impairment of an available-for-sale security results in amounts being reclassified from accumulated other comprehensive income to current period net income. The effects of reclassifications out of accumulated other comprehensive income by the respective line items of net income are presented in the following table.

Component of Accumulated Other	Three Months Ended						Six Months Ended						Affected line item in the
Comprehensive Income	June 30,						June 30,						statement of income
	2018			2017			2018			2017
	(in thousands)
Unrealized gains (losses) on    available-for-sale securities	$	(762	)	$	126		$	(466	)	$	286		Net realized losses on    investments
		(762	)		126			(466	)		286		Income before income taxes
		160			(44	)		44			(100	)	Income tax expense
	$	(602	)	$	82		$	(422	)	$	186		Net income

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Fair Value Measurements

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 8. Fair Value Measurements

The Company carries available-for-sale securities at fair value in our consolidated financial statements and determines fair value measurements and disclosure in accordance with FASB ASC Topic 820, Fair Value Measurements and Disclosures.

The Company determines the fair values of its financial instruments based on the fair value hierarchy established in ASC Topic 820, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard defines fair value, describes three levels of inputs that may be used to measure fair value, and expands disclosures about fair value measurements.

Fair value is defined in ASC Topic 820 as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is the price to sell an asset or transfer a liability and, therefore, represents an exit price, not an entry price. Fair value is the exit price in the principal market (or, if lacking a principal market, the most advantageous market) in which the reporting entity would transact. Fair value is a market-based measurement, not an entity-specific measurement, and, as such, is determined based on the assumptions that market participants would use in pricing the asset or liability. The exit price objective of a fair value measurement applies regardless of the reporting entity’s intent and/or ability to sell the asset or transfer the liability at the measurement date.

ASC Topic 820 requires the use of valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities. The income approach uses valuation techniques to convert future amounts, such as cash flows or earnings, to a single present value amount on a discounted basis. The cost approach is based on the amount that currently would be required to replace the service capacity of an asset, also known as current replacement cost. Valuation techniques used to measure fair value are to be consistently applied.

In ASC Topic 820, inputs refer broadly to the assumptions that market participants would use in pricing the asset or liability, including assumptions about risk, for example, the risk inherent in a particular valuation technique used to measure fair value (such as a pricing model) and/or the risk inherent in the inputs to the valuation technique. Inputs may be observable or unobservable:

• Observable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the reporting entity.

• Unobservable inputs are inputs that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances.

Valuation techniques used to measure fair value are intended to maximize the use of observable inputs and minimize the use of unobservable inputs. ASC Topic 820 establishes a fair value hierarchy that prioritizes the use of inputs used in valuation techniques into the following three levels:

• Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

• Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability, or inputs that are derived principally from or corroborated by observable market data.

• Level 3 inputs are unobservable inputs for the asset or liability. Unobservable inputs are to be used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date.

In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters.

The fair values of the Company’s investments are based upon prices provided by an independent pricing service. The Company has reviewed these prices for reasonableness and has not adjusted any prices received from the independent provider. Securities reported at fair value utilizing Level 1 inputs represent assets whose fair value is determined based upon observable unadjusted quoted market prices for identical assets in active markets. Level 2 securities represent assets whose fair value is determined using observable market information such as previous day trade prices, quotes from less active markets or quoted prices of securities with similar characteristics. There were no transfers between Level 1 and Level 2 during the six months ended June 30, 2018.

At June 30, 2018, assets measured at fair value on a recurring basis are summarized below:

	June 30, 2018
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Financial instruments carried at fair value, classified as a part of:
Securities available-for-sale—fixed maturity:
States and political subdivisions	$	—	$	218,300	$	—	$	218,300
Corporate bonds		—		143,959		—		143,959
U.S. agency-based mortgage-backed securities		—		13,362		—		13,362
U.S. Treasury securities		65,141		—		—		65,141
Total securities available-for-sale—fixed maturity		65,141		375,621		—		440,762
Securities available-for-sale—equity:
Domestic common stock		13,588		—		2		13,590
Total available-for-sale	$	78,729	$	375,621	$	2	$	454,352

At June 30, 2018, assets measured at amortized cost are summarized below:

	June 30, 2018
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Securities held-to-maturity—fixed maturity:
States and political subdivisions	$	—	$	434,737	$	—	$	434,737
Corporate bonds		—		98,016		—		98,016
U.S. agency-based mortgage-backed securities		—		9,387		—		9,387
U.S. Treasury securities		7,095		—		—		7,095
Obligations of U.S. government agencies		—		56,662		—		56,662
Asset-backed securities		—		1,175		—		1,175
Total held-to-maturity	$	7,095	$	599,977	$	—	$	607,072

At December 31, 2017, assets measured at fair value on a recurring basis are summarized below:

	December 31, 2017
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Financial instruments carried at fair value, classified as part of:
Securities available-for-sale—fixed maturity:
States and political subdivisions	$	—	$	251,140	$	—	$	251,140
Corporate bonds		—		130,222		—		130,222
U.S. agency-based mortgage-backed securities		—		18,014		—		18,014
U.S. Treasury securities and obligations    of U.S. government agencies		66,218		—		—		66,218
Total available-for-sale—fixed maturity	$	66,218	$	399,376	$	—	$	465,594
Securities available-for-sale—equity:
Domestic common stock		9,248		—		34		9,282
Total available-for-sale	$	75,466	$	399,376	$	34	$	474,876

At December 31, 2017, assets measured at amortized cost are summarized below:

	December 31, 2017
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Securities held-to-maturity—fixed maturity:
States and political subdivisions	$	—	$	469,101	$	—	$	469,101
Corporate bonds		—		100,047		—		100,047
U.S. agency-based mortgage-backed securities		—		10,845		—		10,845
U.S. Treasury securities		6,750		—		—		6,750
Obligations of U.S. government agencies		—		51,257		—		51,257
Asset-backed securities		—		1,309		—		1,309
Total held-to-maturity	$	6,750	$	632,559	$	—	$	639,309

The Company determines fair value amounts for financial instruments using available third-party market information. When such information is not available, the Company determines the fair value amounts using appropriate valuation methodologies. Nonfinancial instruments such as real estate, property and equipment, deferred policy acquisition costs, deferred income taxes and loss and loss adjustment expense reserves are excluded from the fair value disclosure.

The following table presents summary information regarding changes in the fair value of assets measured at fair value using Level 3 input.

	Six Months Ended			Twelve Months Ended
	June 30, 2018			December 31, 2017
	(in thousands)
Balance, beginning of period	$	34		$	—
Transfer into Level 3		—			34
Unrealized loss on equity security		(32	)		—
Balance, end of period	$	2		$	34

At June 30, 2018, the Company held one security measured at fair value on a nonrecurring basis due to a recognized impairment of $100,000. The security was valued at fair value at the time of impairment and is currently being carried at the adjusted amortized cost value of $12,000 at June 30, 2018.  The security is valued using Level 2 inputs and had a fair value of $32,000 at June 30, 2018.

Cash and Cash Equivalents —The carrying amounts reported in the accompanying consolidated balance sheets for these financial instruments approximate their fair values, which are characterized as Level 1 assets.

Investments —The fair values for fixed maturity and equity securities are based on prices obtained from an independent pricing service. Equity and treasury securities are characterized as Level 1 assets, as their fair values are based on quoted prices in active markets. Fixed maturity securities, other than treasury securities, are characterized as Level 2 assets, as their fair values are determined using observable market inputs.

Short Term Investments —The carrying amounts reported in the accompanying consolidated balance sheets for these financial instruments approximate their fair values. These securities are characterized as Level 2 assets in the fair value hierarchy.

The following table summarizes the carrying values and corresponding fair values for financial instruments:

	As of  June 30, 2018				As of  December 31, 2017
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(in thousands)
Assets:
Fixed maturity securities—held-to-maturity	$	605,877	$	607,072	$	629,668	$	639,309
Fixed maturity securities—available-for-sale		440,762		440,762		465,594		465,594
Equity securities		13,590		13,590		9,282		9,282
Short-term investments		106,811		106,811		25,770		25,770
Cash and cash equivalents		21,176		21,176		55,559		55,559

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Treasury Stock

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Treasury Stock

Note 9. Treasury Stock

The Company’s Board of Directors initiated a share repurchase program in February 2010. In October 2016, the Board reauthorized this program with a limit of $25.0 million with no expiration date.  There were no shares repurchased under this program in the six months ended June 30, 2018 and 2017.

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Subsequent Events

6 Months Ended

Jun. 30, 2018

Subsequent Events [Abstract]

Subsequent Events

Note 10. Subsequent Events

On July 31, 2018, the Company’s Board of Directors declared a quarterly cash dividend of $0.22 per share payable on September 21, 2018 to shareholders of record as of September 7, 2018. The Board considers the payment of a regular cash dividend each calendar quarter.

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Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Adopted Accounting Guidance

Adopted Accounting Guidance

In January 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-01, Financial Instruments – Overall (Subtopic 825-10):  Recognition and Measurement of Financial Assets and Financial Liabilities.  This guidance requires fair value measurement for equity investments (not including those that result in consolidation of the investee or use the equity method of accounting) and the recognition of changes in fair value to be presented as a component of net income.  The guidance also revises the disclosure requirements related to fair value changes of liabilities presented in comprehensive income, eliminates disclosure related to the methods and assumptions underlying fair value for financial instruments measured at amortized cost, and simplifies impairment assessments for equity investments without readily determinable fair values.  The adoption of this new guidance in the first quarter of 2018 resulted in an immaterial decrease in net income of $390 thousand or a $0.02 decrease in our diluted earnings per common share.  

In May 2014, the FASB issued ASU 2014-09 (Topic 606): Revenue from Contracts with Customers.  The guidance revises the criteria for revenue recognition and requires that the revenue recognized reflect the transfer of promised goods or services to customers in an amount that represents the consideration to which the entity expects to be entitled in exchange for those goods or services.  The standard was effective for us in the first quarter of 2018.  The adoption of the new guidance had no impact on the Company's reporting and disclosure of net premiums earned, net investment income or net realized gains and losses, as these items are not within the scope of this new guidance. The remaining revenue sources are immaterial and not impacted by the new standard.

In February 2018, the FASB issued ASU 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220).  This ASU provided new guidance on reclassification from Other Comprehensive Income (“OCI”) of tax effects related to the recently passed tax reform legislation (the “Tax Act”).  The guidance gives entities the option to reclassify to retained earnings tax effects related to items in accumulated OCI deemed to be stranded as a result of tax reform.  The guidance was effective for us in the first quarter of 2018 and was applied retrospectively.  The Company’s policy for releasing income tax effects from accumulated OCI was the individual securities approach for available-for-sale securities.  The adoption of this guidance did not have a material impact on our financial condition and results of operations.

In December 2017, the SEC issued Staff Accounting Bulletin (SAB) 118 which provided guidance on accounting for tax effects of the Tax Act.  Among many changes of the Tax Act which affected Property and Casualty Insurers, the Tax Act required property and casualty taxpayers to discount loss reserves based solely on IRS factors and no longer by reference to historical payment patterns.  As the IRS has yet to release the 2018 discount factors, we have used the 2017 IRS discount factors to estimate the impact of the change in loss reserve discounting factors and adjusted our deferred tax balances for the impact of these changes.  Once the IRS has released the 2018 loss reserve discount factors, we will complete our analysis and include the effect of the difference in the reserve discount factors in the period the analysis is complete or the impact is reasonably estimable.

Prospective Accounting Guidance

Prospective Accounting Guidance

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842).  Under current guidance for lessees, leases are only included on the balance sheet if certain criteria, classifying the contract as a capital lease, are met.  The new guidance requires a lessee to recognize a lease liability and a right of use asset for all leases extending beyond twelve months.  The new guidance is effective for us in the first quarter of 2019.  Upon adoption, leases will be recognized and measured at the beginning of the earliest period presented using a modified retrospective approach.  Adoption of the guidance is not expected to have a material effect on the Company’s consolidated financial statements as the Company does not have any significant leases.  

In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses.  The new guidance replaces the methodology of credit loss impairment, which currently, delays the recognition of credit losses until a probable loss has been incurred.  The new guidance requires credit losses for securities measured at amortized cost to be determined using current expected credit loss estimates.  These estimates are to be derived from historical, current and reasonable supporting forecasts, including prepayments and estimates, and will be recorded through a valuation allowance account that will run through the income statement.  The same method will be used for available-for-sale securities, but the valuation allowance will be limited to the amount by which the fair value is below amortized cost.  The standard is effective for us in the first quarter of 2020.  The Company will continue to monitor and evaluate the impact as the implementation date approaches.

All other issued but not yet effective accounting and reporting standards as of June 30, 2018 are either not applicable to the Company or are not expected to have a material impact on the Company.

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Fair Value Measurements (Policies)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

The Company carries available-for-sale securities at fair value in our consolidated financial statements and determines fair value measurements and disclosure in accordance with FASB ASC Topic 820, Fair Value Measurements and Disclosures.

The Company determines the fair values of its financial instruments based on the fair value hierarchy established in ASC Topic 820, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard defines fair value, describes three levels of inputs that may be used to measure fair value, and expands disclosures about fair value measurements.

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Earnings Per Share

The diluted EPS calculation includes potential common shares assumed issued under the treasury stock method, which reflects the potential dilution that would occur if any outstanding options were exercised or restricted stock becomes vested.

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
	(in thousands, except share and per share amounts)
Basic EPS:
Net income - basic	$	16,956	$	15,481	$	33,125	$	29,005
Basic weighted average common shares		19,208,601		19,162,049		19,197,925		19,156,250
Basic earnings per common share	$	0.88	$	0.81	$	1.73	$	1.51
Diluted EPS:
Net income - diluted	$	16,956	$	15,481	$	33,125	$	29,005
Diluted weighted average common shares:
Weighted average common shares		19,208,601		19,162,049		19,197,925		19,156,250
Stock options and restricted stock		58,134		65,911		77,958		71,747
Diluted weighted average common shares		19,266,735		19,227,960		19,275,883		19,227,997
Diluted earnings per common share	$	0.88	$	0.81	$	1.72	$	1.51

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Investments (Tables)

6 Months Ended

Jun. 30, 2018

Gross Unrealized Gains and Losses and Amortized Cost and Fair Value of Investments Classified as Held-to-maturity

The gross unrealized gains and losses on, and the amortized cost and fair value of, those investments classified as held-to-maturity at June 30, 2018 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	432,914	$	4,714	$	(2,891	)	$	434,737
Corporate bonds		98,702		38		(724	)		98,016
U.S. agency-based mortgage-backed securities		9,038		420		(71	)		9,387
U.S. Treasury securities and obligations of U.S.    government agencies		64,063		385		(691	)		63,757
Asset-backed securities		1,160		25		(10	)		1,175
Totals	$	605,877	$	5,582	$	(4,387	)	$	607,072

The gross unrealized gains and losses on, and the amortized cost and fair value of, those investments classified as held-to-maturity at December 31, 2017 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	460,428	$	9,628	$	(955	)	$	469,101
Corporate bonds		100,024		190		(167	)		100,047
U.S. agency-based mortgage-backed securities		10,260		625		(40	)		10,845
U.S. Treasury securities and obligations    of U.S. government agencies		57,657		548		(198	)		58,007
Asset-backed securities		1,299		25		(15	)		1,309
Totals	$	629,668	$	11,016	$	(1,375	)	$	639,309

Gross Unrealized Gains and Losses and Cost or Amortized Cost and Fair Value of Investments Classified as Available-for-sale

The gross unrealized gains and losses on, and the cost or amortized cost and fair value of, those investments classified as available-for-sale at June 30, 2018 are summarized as follows:

	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Fixed maturity:
States and political subdivisions	$	217,427	$	3,368	$	(2,495	)	$	218,300
Corporate bonds		144,950		60		(1,051	)		143,959
U.S. agency-based mortgage-backed securities		13,730		—		(368	)		13,362
U.S. Treasury securities and obligations    of U.S. government agencies		67,251		—		(2,110	)		65,141
Total fixed maturity		443,358		3,428		(6,024	)		440,762
Equity securities		13,590		—		—			13,590
Totals	$	456,948	$	3,428	$	(6,024	)	$	454,352

The gross unrealized gains and losses on, and the cost or amortized cost and fair value of, those investments classified as available-for-sale at December 31, 2017 are summarized as follows:

	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Fixed maturity:
States and political subdivisions	$	244,898	$	6,819	$	(577	)	$	251,140
Corporate bonds		130,210		224		(212	)		130,222
U.S. agency-based mortgage-backed securities		18,813		—		(799	)		18,014
U.S. Treasury securities and obligations    of U.S. government agencies		67,315		29		(1,126	)		66,218
Total fixed maturity		461,236		7,072		(2,714	)		465,594
Equity securities		8,503		779		—			9,282
Totals	$	469,739	$	7,851	$	(2,714	)	$	474,876

Investment Securities Continuous Unrealized Loss Position

The following table summarizes the fair value and gross unrealized losses on securities, aggregated by major investment category and length of time that the individual securities have been in a continuous unrealized loss position:

	Less Than 12 Months				12 Months or Greater				Total
	Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses
	(in thousands)
June 30, 2018
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	204,459	$	2,568	$	12,424	$	323	$	216,883	$	2,891
Corporate bonds		86,816		703		2,237		21		89,053		724
U.S. agency-based mortgage-backed securities		2,524		71		—		—		2,524		71
U.S. Treasury securities and obligations    of U.S. government agencies		43,357		461		11,659		230		55,016		691
Asset-backed securities		565		10		—		—		565		10
Total held-to-maturity securities		337,721		3,813		26,320		574		364,041		4,387
Available-for-Sale
Fixed maturity securities:
States and political subdivisions	$	77,359	$	1,356	$	15,476	$	1,139	$	92,835	$	2,495
Corporate bonds		121,848		1,016		1,021		35		122,869		1,051
U.S. agency-based mortgage-backed securities		11,557		312		1,805		56		13,362		368
U.S. Treasury securities and obligations    of U.S. government agencies		18,071		630		47,070		1,480		65,141		2,110
Total available-for-sale securities		228,835		3,314		65,372		2,710		294,207		6,024
Total	$	566,556	$	7,127	$	91,692	$	3,284	$	658,248	$	10,411

	Less Than 12 Months				12 Months or Greater				Total
	Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses		Fair Value of Investments with Unrealized Losses		Gross Unrealized Losses
	(in thousands)
December 31, 2017
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	110,698	$	654	$	19,895	$	301	$	130,593	$	955
Corporate bonds		56,425		156		4,121		11		60,546		167
U.S. agency-based mortgage-backed securities		2,798		40		—		—		2,798		40
U.S. Treasury securities and obligations    of U.S. government agencies		48,153		122		3,948		76		52,101		198
Asset-backed securities		—		—		967		15		967		15
Total held-to-maturity securities		218,074		972		28,931		403		247,005		1,375
Available-for-Sale
Fixed maturity securities:
States and political subdivisions	$	23,365	$	86	$	19,153	$	491	$	42,518	$	577
Corporate bonds		82,795		171		5,888		41		88,683		212
U.S. agency-based mortgage-backed securities		14,686		59		3,328		740		18,014		799
U.S. Treasury securities and obligations    of U.S. government agencies		14,730		204		47,716		922		62,446		1,126
Total available-for-sale securities		135,576		520		76,085		2,194		211,661		2,714
Total	$	353,650	$	1,492	$	105,016	$	2,597	$	458,666	$	4,089

Held-to-Maturity Securities [Member]

Summary of Amortized Cost and Fair Value of Investments in Fixed Maturity Securities, by Contractual Maturity

A summary of the amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity at June 30, 2018, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	91,818	$	92,103
After one year through five years		252,775		252,787
After five years through ten years		90,966		91,281
After ten years		160,120		160,339
U.S. agency-based mortgage-backed securities		9,038		9,387
Asset-backed securities		1,160		1,175
Totals	$	605,877	$	607,072

Available-for-Sale Securities [Member]

Summary of Amortized Cost and Fair Value of Investments in Fixed Maturity Securities, by Contractual Maturity

A summary of the amortized cost and fair value of investments in fixed maturity securities, classified as available-for-sale at June 30, 2018, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	69,793	$	69,608
After one year through five years		158,974		156,733
After five years through ten years		32,366		31,784
After ten years		168,495		169,275
U.S. agency-based mortgage-backed securities		13,730		13,362
Totals	$	443,358	$	440,762

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Loss Reserves (Tables)

6 Months Ended

Jun. 30, 2018

Insurance [Abstract]

Liability for Unpaid Loss and Loss Adjustment Expenses, Net of Related Amounts Recoverable from Reinsurers

The following table provides the Company’s liability for unpaid loss and loss adjustment expenses, net of related amounts recoverable from reinsurers, for the six months ended June 30, 2018 and 2017:

	Six Months Ended June 30,
	2018			2017
	(in thousands)
Balance, beginning of period	$	771,845		$	742,776
Less amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		84,889			78,256
Net balance, beginning of period		686,956			664,520
Add incurred related to:
Current accident year		126,060			119,828
Prior accident years		(20,822	)		(17,184	)
Total incurred		105,238			102,644
Less paid related to:
Current accident year		18,386			15,298
Prior accident years		84,194			80,571
Total paid		102,580			95,869
Net balance, end of period		689,614			671,295
Add amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		93,987			78,464
Balance, end of period	$	783,601		$	749,759

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Comprehensive Income and Accumulated Other Comprehensive Income (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Schedule of Changes in Accumulated Other Comprehensive Income (AOCI)

The following table illustrates the changes in the balance of each component of accumulated other comprehensive income for each period presented in the interim financial statements.

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(in thousands)
Beginning balance	$	(2,236	)	$	460		$	3,612		$	(492	)
Other comprehensive income (loss) before    reclassification		(449	)		2,038			(5,863	)		3,094
Amounts reclassified from accumulated other    comprehensive income		602			(82	)		168			(186	)
Net current period other comprehensive    income (loss)		153			1,956			(5,695	)		2,908
Ending balance	$	(2,083	)	$	2,416		$	(2,083	)	$	2,416

Reclassification Out of Accumulated Other Comprehensive Income

The effects of reclassifications out of accumulated other comprehensive income by the respective line items of net income are presented in the following table.

Component of Accumulated Other	Three Months Ended						Six Months Ended						Affected line item in the
Comprehensive Income	June 30,						June 30,						statement of income
	2018			2017			2018			2017
	(in thousands)
Unrealized gains (losses) on    available-for-sale securities	$	(762	)	$	126		$	(466	)	$	286		Net realized losses on    investments
		(762	)		126			(466	)		286		Income before income taxes
		160			(44	)		44			(100	)	Income tax expense
	$	(602	)	$	82		$	(422	)	$	186		Net income

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of Assets Measured at Fair Value on Recurring Basis

At June 30, 2018, assets measured at fair value on a recurring basis are summarized below:

	June 30, 2018
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Financial instruments carried at fair value, classified as a part of:
Securities available-for-sale—fixed maturity:
States and political subdivisions	$	—	$	218,300	$	—	$	218,300
Corporate bonds		—		143,959		—		143,959
U.S. agency-based mortgage-backed securities		—		13,362		—		13,362
U.S. Treasury securities		65,141		—		—		65,141
Total securities available-for-sale—fixed maturity		65,141		375,621		—		440,762
Securities available-for-sale—equity:
Domestic common stock		13,588		—		2		13,590
Total available-for-sale	$	78,729	$	375,621	$	2	$	454,352

At December 31, 2017, assets measured at fair value on a recurring basis are summarized below:

	December 31, 2017
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Financial instruments carried at fair value, classified as part of:
Securities available-for-sale—fixed maturity:
States and political subdivisions	$	—	$	251,140	$	—	$	251,140
Corporate bonds		—		130,222		—		130,222
U.S. agency-based mortgage-backed securities		—		18,014		—		18,014
U.S. Treasury securities and obligations    of U.S. government agencies		66,218		—		—		66,218
Total available-for-sale—fixed maturity	$	66,218	$	399,376	$	—	$	465,594
Securities available-for-sale—equity:
Domestic common stock		9,248		—		34		9,282
Total available-for-sale	$	75,466	$	399,376	$	34	$	474,876

Schedule of Assets Measured at Amortized Cost

At June 30, 2018, assets measured at amortized cost are summarized below:

	June 30, 2018
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Securities held-to-maturity—fixed maturity:
States and political subdivisions	$	—	$	434,737	$	—	$	434,737
Corporate bonds		—		98,016		—		98,016
U.S. agency-based mortgage-backed securities		—		9,387		—		9,387
U.S. Treasury securities		7,095		—		—		7,095
Obligations of U.S. government agencies		—		56,662		—		56,662
Asset-backed securities		—		1,175		—		1,175
Total held-to-maturity	$	7,095	$	599,977	$	—	$	607,072

At December 31, 2017, assets measured at amortized cost are summarized below:

	December 31, 2017
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Securities held-to-maturity—fixed maturity:
States and political subdivisions	$	—	$	469,101	$	—	$	469,101
Corporate bonds		—		100,047		—		100,047
U.S. agency-based mortgage-backed securities		—		10,845		—		10,845
U.S. Treasury securities		6,750		—		—		6,750
Obligations of U.S. government agencies		—		51,257		—		51,257
Asset-backed securities		—		1,309		—		1,309
Total held-to-maturity	$	6,750	$	632,559	$	—	$	639,309

Summary of Information Regarding Changes in Fair Value of Assets Measured at Fair Value

The following table presents summary information regarding changes in the fair value of assets measured at fair value using Level 3 input.

	Six Months Ended			Twelve Months Ended
	June 30, 2018			December 31, 2017
	(in thousands)
Balance, beginning of period	$	34		$	—
Transfer into Level 3		—			34
Unrealized loss on equity security		(32	)		—
Balance, end of period	$	2		$	34

Summary of Carrying Values and Corresponding Fair Values for Financial Instruments

The following table summarizes the carrying values and corresponding fair values for financial instruments:

	As of  June 30, 2018				As of  December 31, 2017
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(in thousands)
Assets:
Fixed maturity securities—held-to-maturity	$	605,877	$	607,072	$	629,668	$	639,309
Fixed maturity securities—available-for-sale		440,762		440,762		465,594		465,594
Equity securities		13,590		13,590		9,282		9,282
Short-term investments		106,811		106,811		25,770		25,770
Cash and cash equivalents		21,176		21,176		55,559		55,559

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Basis of Presentation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Percentage of comparable consolidated amounts	95.00%	95.00%
ASU 2016-01 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Decrease in net income	$ 390
ASU 2016-01 [Member] | Common Shares [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Decrease in diluted earnings per common share	$ 0.02

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Stock Options and Restricted Stock - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Incentive_Plan shares	Jun. 30, 2017 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans | Incentive_Plan			3
Market value of shares granted | $			$ 500	$ 700
Stock options exercised, Shares | shares			15,000	0
Proceeds from stock option exercises | $			$ 67
Share-based compensation expense | $	$ 800	$ 500	$ 800	$ 900
Executive Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock granted, shares | shares			3,304	7,434
Restricted Stock Units (RSUs) [Member] | Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock granted, shares | shares			5,761	6,454

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Earnings Per Share - Calculation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share Basic [Abstract]
Net income - basic	$ 16,956	$ 15,481	$ 33,125	$ 29,005
Basic weighted average common shares	19,208,601	19,162,049	19,197,925	19,156,250
Basic earnings per common share	$ 0.88	$ 0.81	$ 1.73	$ 1.51
Net income - diluted	$ 16,956	$ 15,481	$ 33,125	$ 29,005
Weighted average common shares	19,208,601	19,162,049	19,197,925	19,156,250
Stock options and restricted stock	58,134	65,911	77,958	71,747
Diluted weighted average common shares	19,266,735	19,227,960	19,275,883	19,227,997
Diluted earnings per common share	$ 0.88	$ 0.81	$ 1.72	$ 1.51

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Investments - Gross Unrealized Gains and Losses and Amortized Cost and Fair Value of Investments Classified as Held-to-Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	$ 605,877	$ 629,668
Held-to-Maturity, Gross Unrealized Gains	5,582	11,016
Held-to-Maturity, Gross Unrealized Losses	(4,387)	(1,375)
Held-to-Maturity, Fair Value	607,072	639,309
States and Political Subdivisions [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	432,914	460,428
Held-to-Maturity, Gross Unrealized Gains	4,714	9,628
Held-to-Maturity, Gross Unrealized Losses	(2,891)	(955)
Held-to-Maturity, Fair Value	434,737	469,101
Corporate Bonds [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	98,702	100,024
Held-to-Maturity, Gross Unrealized Gains	38	190
Held-to-Maturity, Gross Unrealized Losses	(724)	(167)
Held-to-Maturity, Fair Value	98,016	100,047
U.S. Agency-Based Mortgage-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	9,038	10,260
Held-to-Maturity, Gross Unrealized Gains	420	625
Held-to-Maturity, Gross Unrealized Losses	(71)	(40)
Held-to-Maturity, Fair Value	9,387	10,845
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	64,063	57,657
Held-to-Maturity, Gross Unrealized Gains	385	548
Held-to-Maturity, Gross Unrealized Losses	(691)	(198)
Held-to-Maturity, Fair Value	63,757	58,007
Asset-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	1,160	1,299
Held-to-Maturity, Gross Unrealized Gains	25	25
Held-to-Maturity, Gross Unrealized Losses	(10)	(15)
Held-to-Maturity, Fair Value	$ 1,175	$ 1,309

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Investments - Gross Unrealized Gains and Losses and Cost or Amortized Cost and Fair Value of Investments Classified as Available-for-Sale (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Investment [Line Items]
Fixed maturity, Cost or Amortized Cost	$ 443,358	$ 461,236
Fixed maturity, Gross Unrealized Gains	3,428	7,072
Fixed maturity, Gross Unrealized Losses	(6,024)	(2,714)
Fixed maturity, Fair Value	440,762	465,594
Equity securities, Cost or Amortized Cost	13,590	8,503
Equity securities, Gross Unrealized Gains		779
Equity securities, Gross Unrealized Losses
Equity securities, Fair Value	13,590	9,282
Totals, Cost or Amortized Cost	456,948	469,739
Totals, Gross Unrealized Gains	3,428	7,851
Totals, Gross Unrealized Losses	(6,024)	(2,714)
Totals, Fair Value	454,352	474,876
States and Political Subdivisions [Member]
Investment [Line Items]
Fixed maturity, Cost or Amortized Cost	217,427	244,898
Fixed maturity, Gross Unrealized Gains	3,368	6,819
Fixed maturity, Gross Unrealized Losses	(2,495)	(577)
Fixed maturity, Fair Value	218,300	251,140
Corporate Bonds [Member]
Investment [Line Items]
Fixed maturity, Cost or Amortized Cost	144,950	130,210
Fixed maturity, Gross Unrealized Gains	60	224
Fixed maturity, Gross Unrealized Losses	(1,051)	(212)
Fixed maturity, Fair Value	143,959	130,222
U.S. Agency-Based Mortgage-Backed Securities [Member]
Investment [Line Items]
Fixed maturity, Cost or Amortized Cost	13,730	18,813
Fixed maturity, Gross Unrealized Losses	(368)	(799)
Fixed maturity, Fair Value	13,362	18,014
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Investment [Line Items]
Fixed maturity, Cost or Amortized Cost	67,251	67,315
Fixed maturity, Gross Unrealized Gains		29
Fixed maturity, Gross Unrealized Losses	(2,110)	(1,126)
Fixed maturity, Fair Value	$ 65,141	$ 66,218

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Investments - Summary of Amortized Cost and Fair Value of Investments in Fixed Maturity Securities, Classified as Held-to-Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Investment [Line Items]
Within one year, Amortized Cost	$ 91,818
After one year through five years, Amortized Cost	252,775
After five years through ten years, Amortized Cost	90,966
After ten years, Amortized Cost	160,120
Held-to-maturity, Amortized Cost, Totals	605,877	$ 629,668
Within one year, Fair Value	92,103
After one year through five years, Fair Value	252,787
After five years through ten years, Fair Value	91,281
After ten years, Fair Value	160,339
Held-to-maturity, Fair Value, Totals	607,072	639,309
U.S. Agency-Based Mortgage-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost	9,038
Held-to-maturity, Amortized Cost, Totals	9,038	10,260
Held-to-maturity, Fair Value	9,387
Held-to-maturity, Fair Value, Totals	9,387	10,845
Asset-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost	1,160
Held-to-maturity, Amortized Cost, Totals	1,160	1,299
Held-to-maturity, Fair Value	1,175
Held-to-maturity, Fair Value, Totals	$ 1,175	$ 1,309

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Investments - Summary of Amortized Cost and Fair Value of Investments in Fixed Maturity Securities, Classified as Available-for-Sale (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Investment [Line Items]
Within one year, Amortized Cost	$ 69,793
After one year through five years, Amortized Cost	158,974
After five years through ten years, Amortized Cost	32,366
After ten years, Amortized Cost	168,495
Fixed maturity, Cost or Amortized Cost	443,358	$ 461,236
Within one year, Fair Value	69,608
After one year through five years, Fair Value	156,733
After five years through ten years, Fair Value	31,784
After ten years, Fair Value	169,275
Total, Fair Value	440,762	465,594
U.S. Agency-Based Mortgage-Backed Securities [Member]
Investment [Line Items]
Available-for-sale securities, Amortized Cost	13,730
Fixed maturity, Cost or Amortized Cost	13,730	18,813
Available-for-sale securities, Fair value	13,362
Total, Fair Value	$ 13,362	$ 18,014

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Investments - Investment Securities Continuous Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Investment [Line Items]
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Less Than 12 Months	$ 337,721	$ 218,074
Held-to-maturity securities, Gross Unrealized Losses, Less Than 12 Months	3,813	972
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	26,320	28,931
Held-to-maturity securities, Gross Unrealized Losses, 12 Months or Greater	574	403
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	364,041	247,005
Held-to-maturity securities, Gross Unrealized Losses, Total	4,387	1,375
Available-for Sale, Fair value of Investments with Unrealized Losses, Less Than 12 Months	228,835	135,576
Available-for Sale, Gross Unrealized Losses, Less Than 12 Months	3,314	520
Available-for Sale, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	65,372	76,085
Available-for Sale, Gross Unrealized Losses, 12 Months or Greater	2,710	2,194
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total	294,207	211,661
Available-for Sale, Gross Unrealized Losses, Total	6,024	2,714
Fair Value of Investments with Unrealized Losses, Less Than 12 months	566,556	353,650
Gross Unrealized Loss, Less Than 12 Months	7,127	1,492
Fair Value of Investments with Unrealized Losses, 12 Months or Greater	91,692	105,016
Gross Unrealized Losses, 12 Months or Greater	3,284	2,597
Fair Value of Investments with Unrealized Losses, Total	658,248	458,666
Gross Unrealized Losses, Total	10,411	4,089
States and Political Subdivisions [Member]
Investment [Line Items]
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Less Than 12 Months	204,459	110,698
Held-to-maturity securities, Gross Unrealized Losses, Less Than 12 Months	2,568	654
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	12,424	19,895
Held-to-maturity securities, Gross Unrealized Losses, 12 Months or Greater	323	301
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	216,883	130,593
Held-to-maturity securities, Gross Unrealized Losses, Total	2,891	955
Available-for Sale, Fair value of Investments with Unrealized Losses, Less Than 12 Months	77,359	23,365
Available-for Sale, Gross Unrealized Losses, Less Than 12 Months	1,356	86
Available-for Sale, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	15,476	19,153
Available-for Sale, Gross Unrealized Losses, 12 Months or Greater	1,139	491
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total	92,835	42,518
Available-for Sale, Gross Unrealized Losses, Total	2,495	577
Corporate Bonds [Member]
Investment [Line Items]
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Less Than 12 Months	86,816	56,425
Held-to-maturity securities, Gross Unrealized Losses, Less Than 12 Months	703	156
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	2,237	4,121
Held-to-maturity securities, Gross Unrealized Losses, 12 Months or Greater	21	11
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	89,053	60,546
Held-to-maturity securities, Gross Unrealized Losses, Total	724	167
Available-for Sale, Fair value of Investments with Unrealized Losses, Less Than 12 Months	121,848	82,795
Available-for Sale, Gross Unrealized Losses, Less Than 12 Months	1,016	171
Available-for Sale, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	1,021	5,888
Available-for Sale, Gross Unrealized Losses, 12 Months or Greater	35	41
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total	122,869	88,683
Available-for Sale, Gross Unrealized Losses, Total	1,051	212
U.S. Agency-Based Mortgage-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Less Than 12 Months	2,524	2,798
Held-to-maturity securities, Gross Unrealized Losses, Less Than 12 Months	71	40
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	2,524	2,798
Held-to-maturity securities, Gross Unrealized Losses, Total	71	40
Available-for Sale, Fair value of Investments with Unrealized Losses, Less Than 12 Months	11,557	14,686
Available-for Sale, Gross Unrealized Losses, Less Than 12 Months	312	59
Available-for Sale, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	1,805	3,328
Available-for Sale, Gross Unrealized Losses, 12 Months or Greater	56	740
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total	13,362	18,014
Available-for Sale, Gross Unrealized Losses, Total	368	799
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Investment [Line Items]
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Less Than 12 Months	43,357	48,153
Held-to-maturity securities, Gross Unrealized Losses, Less Than 12 Months	461	122
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	11,659	3,948
Held-to-maturity securities, Gross Unrealized Losses, 12 Months or Greater	230	76
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	55,016	52,101
Held-to-maturity securities, Gross Unrealized Losses, Total	691	198
Available-for Sale, Fair value of Investments with Unrealized Losses, Less Than 12 Months	18,071	14,730
Available-for Sale, Gross Unrealized Losses, Less Than 12 Months	630	204
Available-for Sale, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	47,070	47,716
Available-for Sale, Gross Unrealized Losses, 12 Months or Greater	1,480	922
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total	65,141	62,446
Available-for Sale, Gross Unrealized Losses, Total	2,110	1,126
Asset-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Less Than 12 Months	565
Held-to-maturity securities, Gross Unrealized Losses, Less Than 12 Months	10
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, 12 Months or Greater		967
Held-to-maturity securities, Gross Unrealized Losses, 12 Months or Greater		15
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	565	967
Held-to-maturity securities, Gross Unrealized Losses, Total	$ 10	$ 15

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Investments - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) Security	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Security	Jun. 30, 2017 USD ($)
Investments Schedule [Abstract]
Individual fixed maturity held in unrealized loss position | Security	419		419
Individual fixed maturity held in unrealized loss position longer than 12 months | Security	46		46
Impairment losses recognized | $			$ 0	$ 0
Net realized losses on investments | $	$ (1,111,000)	$ (388,000)	$ (1,142,000)	$ (569,000)

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Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended		12 Months Ended
	Dec. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Unrecognized tax benefits		$ 0
U.S. federal income tax statutory rate	21.00%	21.00%		35.00%
Company recognized uncertain tax positions		$ 0	$ 0

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Loss Reserves - Liability for Unpaid Loss and Loss Adjustment Expenses, Net of Related Amounts Recoverable from Reinsurers (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Roll Forward In Liability For Unpaid Claims And Claims Adjustment Expense [Abstract]
Balance, beginning of period	$ 771,845	$ 742,776
Less amounts recoverable from reinsurers on unpaid loss and loss adjustment expenses	84,889	78,256
Net balance, beginning of period	686,956	664,520
Add incurred related to:
Current accident year	126,060	119,828
Prior accident years	(20,822)	(17,184)
Total incurred	105,238	102,644
Less paid related to:
Current accident year	18,386	15,298
Prior accident years	84,194	80,571
Total paid	102,580	95,869
Net balance, end of period	689,614	671,295
Add amounts recoverable from reinsurers on unpaid loss and loss adjustment expenses	93,987	78,464
Balance, end of period	$ 783,601	$ 749,759

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Loss Reserves - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Insurance [Abstract]
Loss and LAE Related to Prior Periods	$ 20,822	$ 17,184

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Comprehensive Income and Accumulated Other Comprehensive Income - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Comprehensive income	$ 17,109	$ 17,437	$ 27,430	$ 31,913
Comprehensive income tax rate			21.00%	35.00%

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Comprehensive Income and Accumulated Other Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Income (AOCI) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance			$ 425,423
Ending Balance	$ 445,391		445,391
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(2,236)	$ 460	3,612	$ (492)
Other comprehensive income (loss) before reclassification	(449)	2,038	(5,863)	3,094
Amounts reclassified from accumulated other comprehensive income	602	(82)	168	(186)
Net current period other comprehensive income (loss)	153	1,956	(5,695)	2,908
Ending Balance	$ (2,083)	$ 2,416	$ (2,083)	$ 2,416

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Comprehensive Income and Accumulated Other Comprehensive Income - Reclassification Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	$ 20,930	$ 22,151	$ 40,344	$ 40,884
Income tax expense	(3,974)	(6,670)	(7,219)	(11,879)
Net income	16,956	15,481	33,125	29,005
Unrealized Gains on Available-for-Sale Securities [Member] | Reclassification Out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Unrealized gains (losses) on available-for-sale securities	(762)	126	(466)	286
Income before income taxes	(762)	126	(466)	286
Income tax expense	160	(44)	44	(100)
Net income	$ (602)	$ 82	$ (422)	$ 186

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Fair Value Measurements - Schedule of Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	$ 440,762	$ 465,594
Available-for-sale—equity, Fair Value	13,590	9,282
Total available-for-sale	454,352	474,876
Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	440,762	465,594
Total available-for-sale	454,352	474,876
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	65,141	66,218
Total available-for-sale	78,729	75,466
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	375,621	399,376
Total available-for-sale	375,621	399,376
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total available-for-sale	2	34
Fair Value, Measurements, Recurring [Member] | Common Stock [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale—equity, Fair Value	13,590	9,282
Fair Value, Measurements, Recurring [Member] | Common Stock [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale—equity, Fair Value	13,588	9,248
Fair Value, Measurements, Recurring [Member] | Common Stock [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale—equity, Fair Value	2	34
Fair Value, Measurements, Recurring [Member] | States and Political Subdivisions [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	218,300	251,140
Fair Value, Measurements, Recurring [Member] | States and Political Subdivisions [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	218,300	251,140
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	143,959	130,222
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	143,959	130,222
Fair Value, Measurements, Recurring [Member] | U.S. Agency-Based Mortgage-Backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	13,362	18,014
Fair Value, Measurements, Recurring [Member] | U.S. Agency-Based Mortgage-Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	13,362	18,014
Fair Value, Measurements, Recurring [Member] | U.S. Treasury Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	65,141	66,218
Fair Value, Measurements, Recurring [Member] | U.S. Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturity securities—available-for-sale, at fair value (cost $443,358 and $461,236 in 2018 and 2017, respectively)	$ 65,141	$ 66,218

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Fair Value Measurements - Schedule of Assets Measured at Amortized Cost (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	$ 607,072	$ 639,309
States and Political Subdivisions [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	434,737	469,101
Corporate Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	98,016	100,047
U.S. Agency-Based Mortgage-Backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	9,387	10,845
U.S. Treasury Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	7,095	6,750
Obligations of U.S. Government Agencies [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	56,662	51,257
Asset-Backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	1,175	1,309
Fair Value, Inputs, Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	7,095	6,750
Fair Value, Inputs, Level 1 [Member] | U.S. Treasury Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	7,095	6,750
Fair Value, Inputs, Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	599,977	632,559
Fair Value, Inputs, Level 2 [Member] | States and Political Subdivisions [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	434,737	469,101
Fair Value, Inputs, Level 2 [Member] | Corporate Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	98,016	100,047
Fair Value, Inputs, Level 2 [Member] | U.S. Agency-Based Mortgage-Backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	9,387	10,845
Fair Value, Inputs, Level 2 [Member] | Obligations of U.S. Government Agencies [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	56,662	51,257
Fair Value, Inputs, Level 2 [Member] | Asset-Backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	$ 1,175	$ 1,309

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Fair Value Measurements - Summary of Information Regarding Changes in Fair Value of Assets Measured at Fair Value (Detail) - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	$ 34
Transfer into Level 3		$ 34
Unrealized loss on equity security	(32)
Balance, end of period	$ 2	$ 34

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Fair Value Measurements - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held to maturity, carrying value	$ 605,877,000	$ 629,668,000
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Recognized impairment	100,000
Securities held to maturity, carrying value	12,000
Securities held to maturity, fair value	$ 32,000

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Fair Value Measurements - Summary of Carrying Values and Corresponding Fair Values for Financial Instruments (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturity securities-held-to-maturity	$ 605,877	$ 629,668
Fixed maturity securities-held-to-maturity	607,072	639,309
Fixed maturity securities-available-for-sale	440,762	465,594
Equity securities	13,590	9,282
Short-term investments	106,811	25,770
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturity securities-held-to-maturity	607,072	639,309
Fixed maturity securities-available-for-sale	440,762	465,594
Equity securities	13,590	9,282
Short-term investments	106,811	25,770
Cash and cash equivalents	21,176	55,559
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturity securities-available-for-sale	440,762	465,594
Equity securities	13,590	9,282
Short-term investments	106,811	25,770
Cash and cash equivalents	$ 21,176	$ 55,559

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Treasury Stock - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Oct. 31, 2016
Equity [Abstract]
Share repurchase program, new limit amount			$ 25,000,000
Shares repurchased under the program	0	0

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Subsequent Events - Additional Information (Detail) - Subsequent Event [Member] - Dividend Declared [Member]	Jul. 31, 2018 $ / shares
Subsequent Event [Line Items]
Date of declared to shareholders entitled to dividends	Jul. 31, 2018
Cash dividend per share	$ 0.22
Date of payment to shareholders entitled to dividends	Sep. 21, 2018
Date of record of shareholders entitled to dividends	Sep. 07, 2018