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 SEPTEMBER 30, 2017

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 October 24, 2017, there were 19,244,023 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	26
PART II - OTHER INFORMATION
Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	27
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;

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

• 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;

• 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, or rating factors applicable to the Company, its policyholders or the agencies that sell its insurance;

• 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;

• decreased demand for our insurance;

• 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, 2016. 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)

	September 30, 2017			December 31, 2016
	(unaudited)
Assets
Investments:
Fixed maturity securities—held-to-maturity, at amortized cost (fair value    $610,151 and $568,931 in 2017 and 2016, respectively)	$	598,658		$	562,434
Fixed maturity securities—available-for-sale, at fair value (cost $462,892 and    $479,871 in 2017 and 2016, respectively)		467,256			479,097
Equity securities—available-for-sale, at fair value (cost $7,499 and $0 in 2017    and 2016, respectively)		7,801			33
Short-term investments		69,526			29,580
Other investments		1,280			13,330
Total investments		1,144,521			1,084,474
Cash and cash equivalents		80,378			58,936
Amounts recoverable from reinsurers		84,958			83,666
Premiums receivable, net of allowance		185,497			183,005
Deferred income taxes		31,572			33,811
Accrued interest receivable		11,235			11,360
Property and equipment, net		6,320			6,636
Deferred policy acquisition costs		20,906			19,300
Other assets		17,861			37,668
Total assets	$	1,583,248		$	1,518,856
Liabilities and shareholders’ equity
Liabilities:
Reserves for loss and loss adjustment expenses	$	755,026		$	742,776
Unearned premiums		165,820			162,028
Reinsurance premiums payable		—			28
Amounts held for others		35,604			31,974
Policyholder deposits		48,003			49,130
Insurance-related assessments		30,293			31,742
Federal income tax payable		1,909			4,017
Accounts payable and other liabilities		41,827			31,510
Payable for investments purchased		9,821			9,501
Total liabilities		1,088,303			1,062,706
Shareholders’ equity:
Common stock:  voting—$0.01 par value authorized shares—50,000,000    in 2017 and 2016; 20,502,273 and 20,488,385 shares issued and 19,244,023    and 19,230,135  shares outstanding in 2017 and 2016, respectively		204			204
Additional paid-in capital		209,622			208,390
Treasury stock at cost (1,258,250 shares in 2017 and 2016)		(22,370	)		(22,370	)
Accumulated earnings		304,456			270,418
Accumulated other comprehensive income (loss), net		3,033			(492	)
Total shareholders’ equity		494,945			456,150
Total liabilities and shareholders’ equity	$	1,583,248		$	1,518,856

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						Nine Months Ended
	September 30,						September 30,
	2017			2016			2017			2016
Revenues
Gross premiums written	$	87,035		$	88,837		$	269,152		$	292,443
Ceded premiums written		(1,992	)		(2,945	)		(6,581	)		(8,046	)
Net premiums written	$	85,043		$	85,892		$	262,571		$	284,397
Net premiums earned	$	85,118		$	89,918		$	258,779		$	276,607
Net investment income		7,788			8,006			21,969			20,251
Net realized gains (losses) on investments		(192	)		181			(761	)		974
Fee and other income		90			101			284			272
Total revenues		92,804			98,206			280,271			298,104
Expenses
Loss and loss adjustment expenses incurred		48,394			50,526			151,038			146,413
Underwriting and certain other operating costs		7,218			8,104			23,363			25,325
Commissions		6,030			6,362			18,424			19,731
Salaries and benefits		6,033			6,298			18,899			18,403
Policyholder dividends		1,573			889			4,107			3,195
Total expenses		69,248			72,179			215,831			213,067
Income before income taxes		23,556			26,027			64,440			85,037
Income tax expense		6,979			8,131			18,858			26,245
Net income	$	16,577		$	17,896		$	45,582		$	58,792
Net income available to common shareholders	$	16,577		$	17,896		$	45,582		$	58,792
Earnings per share
Basic	$	0.86		$	0.94		$	2.38		$	3.08
Diluted	$	0.86		$	0.93		$	2.37		$	3.06
Shares used in computing earnings per share
Basic		19,171,912			19,121,947			19,161,529			19,092,298
Diluted		19,236,114			19,190,191			19,235,955			19,186,398
Cash dividends declared per common share	$	0.20		$	0.18		$	0.60		$	0.54

See accompanying notes.

5

AMERISAFE, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

(unaudited)

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2017		2016			2017		2016
Net income	$	16,577	$	17,896		$	45,582	$	58,792
Other comprehensive income:
Unrealized gain (loss) on securities, net of tax		617		(1,713	)		3,525		4,009
Comprehensive income	$	17,194	$	16,183		$	49,107	$	62,801

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 Capital		Treasury Stock						Accumulated Earnings			Accumulated Other Comprehensive Income (Loss)			Total
	Shares		Amounts				Shares			Amounts
Balance at December 31, 2016		20,488,385	$	204	$	208,390		(1,258,250	)	$	(22,370	)	$	270,418		$	(492	)	$	456,150
Comprehensive income		—		—		—		—			—			45,582			3,525			49,107
Restricted common stock    issued		13,888		—		396		—			—			—			—			396
Share-based compensation		—		—		836		—			—			—			—			836
Dividends to shareholders		—		—		—		—			—			(11,544	)		—			(11,544	)
Balance at September 30, 2017		20,502,273	$	204	$	209,622		(1,258,250	)	$	(22,370	)	$	304,456		$	3,033		$	494,945

See accompanying notes.

7

AMERISAFE, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(unaudited)

	Nine Months Ended September 30,
	2017			2016
Operating activities
Net income	$	45,582		$	58,792
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		760			884
Net amortization of investments		10,815			12,306
Deferred income taxes		342			(532	)
Net realized (gains) losses on investments		761			(959	)
Net realized losses on disposal of assets		2			1
Share-based compensation		1,283			1,143
Changes in operating assets and liabilities:
Premiums receivable, net		(2,492	)		(15,623	)
Accrued interest receivable		125			(263	)
Deferred policy acquisition costs		(1,606	)		49
Amounts held by others		27,848			1,016
Other assets		(5,131	)		(2,929	)
Reserves for loss and loss adjustment expenses		12,250			18,243
Unearned premiums		3,792			7,790
Reinsurance balances		(1,320	)		(11,892	)
Amounts held for others and policyholder deposits		2,503			6,557
Accounts payable and other liabilities		6,813			8,285
Net cash provided by operating activities		102,327			82,868
Investing activities
Purchases of investments held-to-maturity		(149,981	)		(102,830	)
Purchases of investments available-for-sale		(86,615	)		(161,482	)
Purchases of short-term investments		(53,789	)		(12,132	)
Proceeds from maturities of investments held-to-maturity		112,715			136,896
Proceeds from sales and maturities of investments available-for-sale		82,270			75,470
Proceeds from sales and maturities of short-term investments		17,610			8,033
Proceeds from redemptions of other investments		9,000			—
Purchases of property and equipment		(446	)		(1,091	)
Net cash used in investing activities		(69,236	)		(57,136	)
Financing activities
Proceeds from stock option exercises		—			837
Tax benefit from share-based payments		—			976
Dividends to shareholders		(11,649	)		(10,414	)
Net cash used in financing activities		(11,649	)		(8,601	)
Change in cash and cash equivalents		21,442			17,131
Cash and cash equivalents at beginning of period		58,936			69,481
Cash and cash equivalents at end of period	$	80,378		$	86,612

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 2017 and 2016.

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, 2016.

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 March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09, Compensation – Stock Compensation (Topic 718):  Improvements to Employee Share-Based Payment Accounting.  The new guidance requires that all tax effects related to share-based payments be made through the income statement at the time of settlement as opposed to recognizing excess tax benefits in additional paid-in capital.  It also requires the cash flows resulting from share-based payments to be included as an operating activity.  In addition to the changes, the guidance permits reporting entities to elect to estimate forfeitures related to share-based payments or recognize them as they occur.  The threshold to qualify for equity classification has also been revised to permit withholding up to the maximum statutory tax rates in the applicable jurisdictions.  The adoption of this new guidance in the first quarter of 2017 did not have a material impact on our financial condition and results of operations.

Prospective Accounting Guidance

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 is effective for us in the first quarter of 2018.  Revenue from insurance contracts is excluded from the scope of the new guidance and as a result, adoption of this guidance is not expected to have a material impact on our financial condition and results of operations.

9

In January 2016, the 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.  This standard is effective for us in the first quarter of 2018.  Based on the equity investments currently held by the Company, there would not be a material impact on the Company's financial condition and results of operations if the new guidance were to be adopted in the current accounting period. The impact on the Company's results of operations and financial position at the date of adoption of the updated guidance will be determined by the equity investments held by the Company and the economic conditions at that time.

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 the impact as the implementation date approaches.

All other issued but not yet effective accounting and reporting standards as of September 30, 2017 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 September 30, 2017, 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, 2016 for additional information regarding the Company’s incentive plans.

During the nine months ended September 30, 2017, the Company granted 7,434 and 6,454 shares of restricted common stock to executive officers and non-employee directors, respectively.  The market value of the restricted shares granted totaled $0.7 million.  During the nine months ended September 30, 2016, the Company granted 27,077 and 5,952 shares of restricted common stock to executive officers and non-employee directors, respectively. The market value of the restricted shares granted totaled $1.9 million.

During the nine months ended September 30, 2017, no options to purchase shares of common stock were exercised. During the nine months ended September 30, 2016, options to purchase 68,879 shares of common stock were exercised. In connection with these exercises, the Company received $0.8 million of stock option proceeds.

The Company recognized share-based compensation expense of $0.3 million in the quarters ended September 30, 2017 and 2016.  The Company recognized share-based compensation expense of $1.3 million in the nine months ended September 30, 2017 and $1.1 million for the same period of 2016.

10

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 income available to common shareholders 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 or warrants were exercised or restricted stock becomes vested, and includes the “if converted” method for participating securities if the effect is dilutive.

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(in thousands, except share and per share amounts)
Basic EPS:
Net income available to common shareholders - basic	$	16,577	$	17,896	$	45,582	$	58,792
Basic weighted average common shares		19,171,912		19,121,947		19,161,529		19,092,298
Basic earnings per common share	$	0.86	$	0.94	$	2.38	$	3.08
Diluted EPS:
Net income available to common shareholders - diluted	$	16,577	$	17,896	$	45,582	$	58,792
Diluted weighted average common shares:
Weighted average common shares		19,171,912		19,121,947		19,161,529		19,092,298
Stock options and restricted stock		64,202		68,244		74,426		94,100
Diluted weighted average common shares		19,236,114		19,190,191		19,235,955		19,186,398
Diluted earnings per common share	$	0.86	$	0.93	$	2.37	$	3.06

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 September 30, 2017 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	430,470	$	10,348	$	(573	)	$	440,245
Corporate bonds		121,942		498		(192	)		122,248
U.S. agency-based mortgage-backed securities		10,928		750		(2	)		11,676
U.S. Treasury securities and obligations of U.S.    government agencies		33,672		642		(94	)		34,220
Asset-backed securities		1,646		132		(16	)		1,762
Totals	$	598,658	$	12,370	$	(877	)	$	610,151

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 September 30, 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	$	236,666	$	6,229	$	(1,243	)	$	241,652
Corporate bonds		151,339		699		(54	)		151,984
U.S. agency-based mortgage-backed securities		13,408		8		(748	)		12,668
U.S. Treasury securities and obligations of U.S.      government agencies		61,479		71		(598	)		60,952
Total fixed maturity		462,892		7,007		(2,643	)		467,256
Equity securities		7,499		302		—			7,801
Other investments		1,000		280		—			1,280
Totals	$	471,391	$	7,589	$	(2,643	)	$	476,337

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, 2016 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	394,875	$	7,622	$	(3,014	)	$	399,483
Corporate bonds		143,858		423		(265	)		144,016
Commercial mortgage-backed securities		70		—		—			70
U.S. agency-based mortgage-backed securities		9,967		948		—			10,915
U.S. Treasury securities and obligations    of U.S. government agencies		11,737		746		(67	)		12,416
Asset-backed securities		1,927		163		(59	)		2,031
Totals	$	562,434	$	9,902	$	(3,405	)	$	568,931

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, 2016 are summarized as follows:

	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Fixed maturity:
States and political subdivisions	$	231,168	$	4,340	$	(3,215	)	$	232,293
Corporate bonds		182,350		436		(271	)		182,515
U.S. agency-based mortgage-backed securities		10,428		17		(1,103	)		9,342
U.S. Treasury securities and obligations    of U.S. government agencies		55,925		—		(978	)		54,947
Total fixed maturity		479,871		4,793		(5,567	)		479,097
Equity securities		—		33		—			33
Other investments		10,000		3,330		—			13,330
Totals	$	489,871	$	8,156	$	(5,567	)	$	492,460

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A summary of the amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity at September 30, 2017, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	113,488	$	113,988
After one year through five years		239,333		243,851
After five years through ten years		98,935		101,450
After ten years		134,328		137,424
U.S. agency-based mortgage-backed securities		10,928		11,676
Asset-backed securities		1,646		1,762
Totals	$	598,658	$	610,151

A summary of the amortized cost and fair value of investments in fixed maturity securities, classified as available-for-sale at September 30, 2017, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	85,898	$	86,051
After one year through five years		160,278		161,077
After five years through ten years		32,117		32,427
After ten years		171,191		175,033
U.S. agency-based mortgage-backed securities		13,408		12,668
Totals	$	462,892	$	467,256

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)
September 30, 2017
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	61,279	$	205	$	22,658	$	368	$	83,937	$	573
Corporate bonds		46,074		183		3,041		9		49,115		192
U.S. agency-based mortgage-backed securities		2,993		2		—		—		2,993		2
U.S. Treasury securities and obligations of U.S.    government agencies		24,242		45		3,977		49		28,219		94
Asset-backed securities		—		—		1,023		16		1,023		16
Total held-to-maturity securities		134,588		435		30,699		442		165,287		877
Available-for Sale
Fixed maturity securities:
States and political subdivisions	$	16,373	$	101	$	26,213	$	1,142	$	42,586	$	1,243
Corporate bonds		15,357		35		4,845		19		20,202		54
U.S. agency-based mortgage-backed securities		5,359		19		3,497		729		8,856		748
U.S. Treasury securities and obligations of U.S.    government agencies		51,182		550		4,002		48		55,184		598
Total available-for-sale securities		88,271		705		38,557		1,938		126,828		2,643
Total	$	222,859	$	1,140	$	69,256	$	2,380	$	292,115	$	3,520

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	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, 2016
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	157,507	$	3,014	$	—	$	—	$	157,507	$	3,014
Corporate bonds		44,654		202		6,292		63		50,946		265
U.S. Treasury securities and obligations of U.S.    government agencies		3,968		67		—		—		3,968		67
Asset-backed securities		—		—		1,173		59		1,173		59
Total held-to-maturity securities		206,129		3,283		7,465		122		213,594		3,405
Available-for Sale
Fixed maturity securities:
States and political subdivisions	$	73,505	$	2,976	$	4,523	$	239	$	78,028	$	3,215
Corporate bonds		41,419		111		7,922		160		49,341		271
U.S. agency-based mortgage-backed securities		3,702		48		3,607		1,055		7,309		1,103
U.S. Treasury securities and obligations of U.S.    government agencies		54,947		978		—		—		54,947		978
Total available-for-sale securities		173,573		4,113		16,052		1,454		189,625		5,567
Total	$	379,702	$	7,396	$	23,517	$	1,576	$	403,219	$	8,972

At September 30, 2017, the Company held 169 individual fixed maturity securities that were in an unrealized loss position, of which 48 individual fixed maturity securities were in a continuous unrealized loss position for longer than 12 months.

The Company holds investments in a limited partnership hedge fund accounted for under the equity method. The carrying value of this investment is $1.3 million at September 30, 2017.

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. 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.

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During the nine months ended September 30, 2017 and2016, there were no impairment losses recognized for other-than-temporary declines in the fair value of our investments

Net realized losses in the nine months ended September 30, 2017 were $0.8 million resulting from called fixed maturity securities. Net realized gains in the nine months ended September 30, 2016 were $1.0 million resulting from the sale of fixed maturity securities classified as available-for-sale.

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 September 30, 2017, the Company had no material unrecognized tax benefits and no adjustments to liabilities or operations were required.

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 September 30, 2017 and 2016.

Tax years 2013 through 2016 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, 2016 for additional information regarding the Company’s loss and loss adjustment expense development.

The following table provides the Company’s liability for unpaid claims and claim adjustment expenses, net of related amounts recoverable from reinsurers, for nine months ended September 30, 2017 and 2016:

	Nine Months Ended September 30,
	2017			2016
	(in thousands)
Balance, beginning of period	$	742,776		$	718,033
Less amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		78,256			64,858
Net balance, beginning of period		664,520			653,175
Add incurred related to:
Current accident year		178,562			187,819
Prior accident years		(27,524	)		(41,406	)
Total incurred		151,038			146,413
Less paid related to:
Current accident year		31,749			31,209
Prior accident years		108,284			108,485
Total paid		140,033			139,694
Net balance, end of period		675,525			659,894
Add amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		79,501			76,382
Balance, end of period	$	755,026		$	736,276

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The foregoing reconciliation reflects favorabledevelopment of the net reserves at September 30, 2017andSeptember 30, 2016. The favorabledevelopment reduced loss and loss adjustment expense incurred by $27.5 million and $41.4 million in 2017 and 2016, 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 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.

Note 7. Comprehensive Income and Accumulated Other Comprehensive Income

Comprehensive income was $17.2 million for the three months ended September 30, 2017, compared to $16.2 million for the three months ended September 30, 2016.  Comprehensive income was $49.1 million for the nine months ended September 30, 2017, compared to $62.8 million for the same period in 2016.  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 securities.

Comprehensive income includes net income plus unrealized gains (losses) on our available-for-sale investment securities, net of tax. In reporting comprehensive income on a net basis in the statements of income, we used a 35 percent tax rate. 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 September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Beginning balance	$	2,416		$	8,309		$	(492	)	$	2,587
Other comprehensive income (loss) before    reclassification		820			(1,589	)		4,032			4,286
Amounts reclassified from accumulated other    comprehensive income		(203	)		(124	)		(507	)		(277	)
Net current period other comprehensive    income (loss)		617			(1,713	)		3,525			4,009
Ending balance	$	3,033		$	6,596		$	3,033		$	6,596

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						Nine Months Ended						Affected line item in the
Comprehensive Income	September 30,						September 30,						statement of income
	2017			2016			2017			2016
	(in thousands)
Unrealized gains on available-for-    sale securities	$	312		$	191		$	780		$	426		Net realized gains (losses) on    investments
		312			191			780			426		Income before income taxes
		(109	)		(67	)		(273	)		(149	)	Income tax expense
	$	203		$	124		$	507		$	277		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.

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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 nine months ended September 30, 2017.

17

At September 30, 2017, assets and liabilities measured at fair value on a recurring basis are summarized below:

	September 30, 2017
	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	$	—	$	241,652	$	—	$	241,652
Corporate bonds		—		151,984		—		151,984
U.S. agency-based mortgage-backed securities		—		12,668		—		12,668
U.S. Treasury securities		60,952		—		—		60,952
Total securities available for sale—fixed maturity		60,952		406,304		—		467,256
Securities available for sale—equity:
Domestic common stock		7,801		—		—		7,801
Total available for sale	$	68,753	$	406,304	$	—	$	475,057

At September 30, 2017, assets and liabilities measured at amortized cost are summarized below:

	September 30, 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	$	—	$	440,245	$	—	$	440,245
Corporate bonds		—		122,248		—		122,248
U.S. agency-based mortgage-backed securities		—		11,676		—		11,676
U.S. Treasury securities		6,785		—		—		6,785
Obligations of U.S. government agencies		—		27,435		—		27,435
Asset-backed securities		—		1,762		—		1,762
Total held-to-maturity	$	6,785	$	603,366	$	—	$	610,151

At December 31, 2016, assets and liabilities measured at fair value on a recurring basis are summarized below:

	December 31, 2016
	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	$	—	$	232,293	$	—	$	232,293
Corporate bonds		—		182,515		—		182,515
U.S. agency-based mortgage-backed securities		—		9,342		—		9,342
U.S. Treasury securities and obligations    of U.S. government agencies		54,947		—		—		54,947
Total available for sale—fixed maturity	$	54,947	$	424,150	$	—	$	479,097
Securities available for sale—equity:
Domestic common stock		33		—		—		33
Total available for sale	$	54,980	$	424,150	$	—	$	479,130

18

At December 31, 2016, assets and liabilities measured at amortized cost are summarized below:

	December 31, 2016
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Securities held-to-maturity—fixed maturity:
States and political subdivisions	$	—	$	399,483	$	—	$	399,483
Corporate bonds		—		144,016		—		144,016
Commercial mortgage-backed securities		—		70		—		70
U.S. agency-based mortgage-backed securities		—		10,915		—		10,915
U.S. Treasury securities		6,779		—		—		6,779
Obligations of U.S. government agencies		—		5,637		—		5,637
Asset-backed securities		—		2,031		—		2,031
Total held-to-maturity	$	6,779	$	562,152	$	—	$	568,931

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.

At September 30, 2017, the Company held two securities measured at fair value on a nonrecurring basis due to a recognized impairment of $0.3 million. The securities are valued using Level 2 inputs and had a value of $0.3 million at September 30, 2017.  The securities were valued at fair value at the time of impairment and are currently being carried at the adjusted amortized cost.  The fair value of the securities was $0.4 million at September 30, 2017.

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.

Other Investments —Other investments consist of a limited partnership interest that is accounted for under the equity method valued using the net asset value provided by the general partner of the limited partnership, which approximates the fair value of the interest. The limited partnership’s objective is to generate absolute returns by investing long and short in publicly-traded global securities. Redemptions are allowed monthly following a 60-day notice with no lock up periods. The Company has no unfunded commitments related to the limited partnership hedge fund.

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

	As of  September 30, 2017				As of  December 31, 2016
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(in thousands)
Assets:
Fixed maturity securities—held-to-maturity	$	598,658	$	610,151	$	562,434	$	568,931
Fixed maturity securities—available-for-sale		467,256		467,256		479,097		479,097
Equity securities		7,801		7,801		33		33
Short-term investments		69,526		69,526		29,580		29,580
Other investments		1,280		1,280		13,330		13,330
Cash and cash equivalents		80,378		80,378		58,936		58,936

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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 nine months ended September 30, 2017. Since the beginning of this plan, the Company has repurchased a total of 1,258,250 shares for $22.4 million, or an average price of $17.78, including commissions.

Note 10. Commitments and Contingencies

In February 2015, the Company was notified of an adverse verdict against its subsidiary, AIIC, related to a 2009 workers’ compensation claim in the State of Iowa. The verdict was for $25.3 million, of which $0.3 million was for actual damages and $25.0 million was awarded for punitive damages. The Company posted an appeal bond in the amount of $27.8 million, as required by law. AIIC appealed both the verdict and the damage awards. On May 19, 2017, the Supreme Court of Iowa reversed the judgments for actual and punitive damages and remanded the case for a new trial, presently scheduled for first quarter 2018.  On July 24, 2017, the $27.8 million appeal bond was returned to AIIC.

The Company maintains reinsurance against catastrophic losses, including court ordered judgments. As of September 30, 2017, the Company’s total reserve for the claim was $2.3 million. The $2.3 million reserve does not include payments that the Company has previously paid in this case. The payments, plus the $2.3 million reserve, total $5.4 million. The Company’s retention is $5.0 million before its reinsurance providers are obligated to reimburse the Company for additional costs. The Company presently believes that the reserve amount, together with its reinsurance coverage, is adequate to satisfy this claim.

Note 11. Subsequent Events

On October 23, 2017, the Company’s Board of Directors declared a quarterly cash dividend of $0.20 per share payable on December 28, 2017 to shareholders of record as of December 14, 2017. The Board considers the payment of a regular cash dividend each calendar quarter.

On October 23, 2017, the Company’s Board of Directors declared an extraordinary cash dividend of $3.50 per share payable on December 28, 2017 to shareholders of record on December 14, 2017.

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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, 2016.

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 nine months ended September 30, 2017 and 2016. 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, 2016.

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Results of Operations

The following table summarizes our consolidated financial results for the three and nine months ended September 30, 2017 and 2016.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(dollars in thousands, except per share data)
	(unaudited)
Gross premiums written	$	87,035		$	88,837		$	269,152		$	292,443
Net premiums earned		85,118			89,918			258,779			276,607
Net investment income		7,788			8,006			21,969			20,251
Total revenues		92,804			98,206			280,271			298,104
Total expenses		69,248			72,179			215,831			213,067
Net income		16,577			17,896			45,582			58,792
Diluted earnings per common share	$	0.86		$	0.93		$	2.37		$	3.06
Other Key Measures
Net combined ratio (1)		81.4	%		80.3	%		83.5	%		77.0	%
Return on average equity (2)		13.6	%		14.2	%		12.8	%		16.3	%
Book value per share (3)	$	25.72		$	26.51		$	25.72		$	26.51

(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 September 30, 2017 Compared to September 30, 2016

Gross Premiums Written. Gross premiums written for the quarter ended September 30, 2017 were $87.0 million, compared to $88.8 million for the same period in 2016, a decrease of 2.0%. The decrease was attributable to a $1.6 million decrease in annual premiums on voluntary policies written during the period.  The effective loss cost multiplier, or ELCM, for our voluntary business was 1.69 for the third quarter ended September 30, 2017 compared to 1.71 for the same period in 2016.

Net Premiums Written. Net premiums written for the quarter ended September 30, 2017 were $85.0 million, compared to $85.9 million for the same period in 2016, a decrease of 1.0%. The decrease was primarily attributable to the decrease in gross premiums written. As a percentage of gross premiums earned, ceded premiums were 2.3% for the third quarter of 2017 compared to 3.2% for the third quarter of 2016.  The decrease in ceded premiums as a percentage of gross premiums earned reflects a $0.3 million decrease in the third quarter of 2017 resulting from a decrease in reinsurance rates.  The prior year third quarter ceded premiums included an increase of $0.5 million due to unfavorable ceded loss development during the period.  For additional information, see Item 1, “Business—Reinsurance” in our Annual Report on Form 10-K for the year ended December 31, 2016.

Net Premiums Earned. Net premiums earned for the third quarter of 2017 were $85.1 million, compared to $89.9 million for the same period in 2016, a decrease of 5.3%. The decrease was attributable to a decrease in net premiums written.

Net Investment Income. Net investment income for the quarter ended September 30, 2017 was $7.8 million, compared to $8.0 million for the same period in 2016. The decrease of $0.2 million was largely due to the change in value of a limited partnership hedge fund investment.  In last year’s third quarter, there was a significant gain in value of the hedge fund.  The change in value of this investment is recorded in investment income each quarter.  Average invested assets, including cash and cash equivalents, were $1.2 billion in the quarter ended September 30, 2017 and 2016. The pre-tax investment yield on our investment portfolio was 2.6% and 2.7% per annum during the quarters ended September 30, 2017 and 2016, respectively. The tax-equivalent yield on our investment portfolio was 3.2% per annum for the quarter ended September 30, 2017 and 2016. The tax-equivalent yield is calculated using the effective interest rate and the appropriate marginal tax rate.

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Net Realized Gains (Losses) on Investments. Net realized losses on investments for the three months ended September 30, 2017 totaled $0.2 million compared to net realized gains of $0.2 millionfor the same period in 2016. Net realized losses in the third quarter of 2017 were attributable to called fixed maturity securities.  Net realized gains in the third quarter of 2016 were attributable to the sale of fixed maturity securities classified as available-for-sale.

Loss and Loss Adjustment Expenses Incurred. Loss and loss adjustment expenses (“LAE”) incurred totaled $48.4 million for the three months ended September 30, 2017, compared to $50.5 million for the same period in 2016, a decrease of $2.1 million, or 4.2%. The current accident year loss and LAE incurred were $58.7 million, or 69.0% of net premiums earned, compared to $61.1 million, or 67.9% of net premiums earned for the same period in 2016. We recorded favorable prior accident year development of $10.3 million in the third quarter of 2017, compared to favorable prior accident year development of $10.5 million in the same period of 2016, as further discussed below in “Prior Year Development.” Our net loss ratio was 56.9% in the third quarter of 2017, compared to 56.2% for the same period of 2016.

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 September 30, 2017 were $19.3 million, compared to $20.8 million for the same period in 2016, a decrease of 7.1%. This decrease was primarily due to a $1.3 million decrease in insurance related assessments, a $0.3 million decrease in commission expense and a $0.3 million decrease in compensation expense. Offsetting these decreases was a $0.4 million increase in premium taxes.  Our expense ratio was 22.7% in the third quarter of 2017 compared to 23.1% in the third quarter of 2016.

Income Tax Expense. Income tax expense for the three months ended September 30, 2017 was $7.0 million, compared to $8.1 million for the same period in 2016. The decrease was attributable to a decrease in the pre-tax income to $23.6 million in the quarter ended September 30, 2017 from $26.0 million in the same period in 2016. Also, the effective tax rate decreased to 29.6% in the quarter ended September 30, 2017 from 31.2% in the same period in 2016. The decrease in the tax rate resulted from a higher proportion of tax-exempt income to underwriting income in the quarter relative to the third quarter of 2016.

Consolidated Results of Operations for Nine Months Ended September 30, 2017 Compared to September 30, 2016

Gross Premiums Written. Gross premiums written for the first nine months of 2017 were $269.2 million, compared to $292.4 million for the same period in 2016, a decrease of 8.0%. The decrease was attributable to a $13.6 million decrease in annual premiums on voluntary policies written during the period, an $8.4 million decrease in premiums resulting from payroll audits and related premium adjustments for policies written in previous quarters and a $0.6 million decrease in assumed premium from mandatory pooling arrangements.  The ELCM for our voluntary business was 1.67 for the nine months ended September 30, 2017 compared to 1.73 for the same period in 2016.

Net Premiums Written. Net premiums written for the nine months ended September 30, 2017 were $262.6 million, compared to $284.4 million for the same period in 2016, a decrease of 7.7%. The decrease was primarily attributable to the decrease in gross premiums written. As a percentage of gross premiums earned, ceded premiums were 2.5% and 2.8% for the first nine months of 2017 and 2016, respectively. The decrease in ceded premiums as a percentage of gross premiums earned reflects a decrease of $0.3 million of ceded premiums in 2017 resulting from a prior period accrual adjustment compared to an increase of $0.7 million in the prior year due to ceded losses during the period.  For additional information, see Item 1, “Business—Reinsurance” in our Annual Report on Form 10-K for the year ended December 31, 2016.

Net Premiums Earned. Net premiums earned for the first nine months of 2017 were $258.8 million, compared to $276.6 million for the same period in 2016, a decrease of 6.4%. The decrease was attributable to the decrease in net premiums written during the period.

Net Investment Income. Net investment income for the first nine months of 2017 was $22.0 million, compared to $20.3 million for the same period in 2016, an increase of 8.5%. The increase was largely due to an increase in interest income resulting from redemption premiums on corporate bonds called prior to maturity.  Average invested assets, including cash and cash equivalents were $1.2 billion in the nine months ended September 30, 2017 and 2016. The pre-tax investment yield on our investment portfolio was 2.5% per annum during the nine months ended September 30, 2017, compared to 2.4% per annum during the same period in 2016. The tax-equivalent yield on our investment portfolio was 3.2% per annum for the first nine months of 2017 and 2016. 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 nine months ended September 30, 2017 totaled $0.8 million, compared to net realized gains of $1.0 million for the same period in 2016.  Net realized losses in the first nine months of 2017 were attributable to called fixed maturity securities.   Net realized gains in the first nine months of 2016 were attributable to the sale of fixed maturity securities classified as available-for-sale.

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Loss and Loss Adjustment Expenses Incurred. Loss and LAE incurred totaled $151.0 million for the nine months ended September 30, 2017, compared to $146.4 million for the same period in 2016, an increase of $4.6 million, or 3.2%. The current accident year loss and LAE incurred were $178.6 million, or 69.0% of net premiums earned, compared to $187.8 million, or 67.9% of net premiums earned, for the same period in 2016. We recorded favorable prior accident year development of $27.5 million in the first nine months of 2017, compared to favorable prior accident year development of $41.4 million in the same period of 2016, as further discussed below in “Prior Year Development.” Our net loss ratio was 58.4% in the first nine months of 2017, compared to 52.9% for the same period of 2016.

Underwriting and Certain Other Operating Costs, Commissions and Salaries and Benefits. Underwriting and certain other operating costs, commissions and salaries and benefits for the nine months ended September 30, 2017 were $60.7 million, compared to $63.5 million for the same period in 2016, a decrease of 4.4%. This decrease was primarily due to a $2.1 million decrease in insurance related assessments and a $1.3 million decrease in commission expense.  Offsetting these decreases were a $0.6 million increase in premium taxes and a $0.5 million increase in compensation expense. Our expense ratio was 23.5% in the first nine months of 2017 compared to 22.9% in the same period of 2016.

Income Tax Expense. Income tax expense for the nine months ended September 30, 2017 was $18.9 million, compared to $26.2 million for the same period in 2016. The decrease was attributable to a decrease in pre-tax income to $64.4 million in the first nine months of 2017 from $85.0 million in the first nine months of 2016. The effective tax rate decreased to 29.3% for the nine months ended September 30, 2017 from 30.9% for the nine months ended September 30, 2016.  The decrease in the tax rate resulted from a higher proportion of tax-exempt income to underwriting income for the nine months ended September 30, 2017 compared with the nine months ended September 30, 2016.

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 $102.3 million for the nine months ended September 30, 2017, which represented a $19.5 million increase from $82.9 million in net cash provided by operating activities for the nine months ended September 30, 2016. This increase in operating cash flow was attributable to a $26.8 million decrease in amounts held by others resulting from the return of an appeal bond as further discussed above in Note 10, a $4.0 million decrease in federal taxes paid and a $1.1 million increase in reinsurance recoveries.  Offsetting these amounts were an $8.6 million decrease in premium collections, a $2.5 million increase in underwriting expenses paid and a $1.3 million increase in losses paid.

Net cash used in investing activities was $69.2 million for the nine months ended September 30, 2017, compared to net cash used in investment activities of $57.1 million for the same period in 2016. Cash provided by sales and maturities of investments totaled $212.6 million for the nine months ended September 30, 2017, compared to $220.4 million for the same period in 2016. A total of $290.4 million in cash was used to purchase investments in the nine months ended September 30, 2017, compared to $276.4 million in purchases for the same period in 2016.

Net cash used in financing activities in the nine months ended September 30, 2017 was $11.6 million compared to net cash used in financing activities of $8.6 million for the same period in 2016. In the nine months ended September 30, 2017, $11.6 million of cash was used for dividends paid to shareholders compared to $10.4 million in the same period of 2016. During the nine months ended September 30, 2017, there was no tax benefit from share-based compensation compared to $1.0 million for the same period in 2016. There were no proceeds from stock option exercises during the year compared to $0.8 million in the same period in 2016.  

Investment Portfolio

Our investment portfolio, including cash and cash equivalents, totaled $1.2 billion at September 30, 2017 compared to $1.1 billion at December 31, 2016. 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.

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The composition of our investment portfolio, including cash and cash equivalents, as of September 30, 2017, is shown in the following table:

	Carrying Value		Percentage of Portfolio
	(in thousands)
Fixed maturity securities—held-to-maturity:
States and political subdivisions	$	430,470		35.2	%
Corporate bonds		121,942		10.0	%
U.S. agency-based mortgage-backed securities		10,928		0.9	%
U.S. Treasury securities and obligations of U.S. government agencies		33,672		2.7	%
Asset-backed securities		1,646		0.1	%
Total fixed maturity securities—held-to-maturity		598,658		48.9	%
Fixed maturity securities—available-for-sale:
States and political subdivisions		241,652		19.7	%
Corporate bonds		151,984		12.4	%
U.S. agency-based mortgage-backed securities		12,668		1.0	%
U.S. Treasury securities and obligations of U.S. government agencies		60,952		5.0	%
Total fixed maturity securities—available-for-sale		467,256		38.1	%
Equity securities		7,801		0.6	%
Short-term investments		69,526		5.7	%
Other investments		1,280		0.1	%
Cash and cash equivalents		80,378		6.6	%
Total investments, including cash and cash equivalents	$	1,224,899		100.0	%

Our 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 nine months ended September 30, 2017 and 2016, 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 $10.3 million in the three months ended September 30, 2017. The table below sets forth the favorable development for the three and nine months ended September 30, 2017 and 2016 for accident years 2012 through 2016 and, collectively, for all accident years prior to 2012.

	Three Months Ended September 30, 2017		Three Months Ended September 30, 2016		Nine Months Ended September 30, 2017		Nine Months Ended September 30, 2016
	(in millions)
Accident Year
2016	$	—	$	—	$	—	$	—
2015		3.4		—		7.8		—
2014		3.0		5.1		10.5		12.8
2013		1.3		1.9		5.2		11.4
2012		1.1		0.9		1.6		8.3
Prior to 2012		1.5		2.6		2.4		8.9
Total net development	$	10.3	$	10.5	$	27.5	$	41.4

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The table below sets forth the number of open claims as of September 30, 2017 and 2016, and the number of claims reported and closed during the three and nine months then ended.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Open claims at beginning of period		4,841			5,141			5,195			5,300
Claims reported		1,428			1,535			3,904			4,145
Claims closed		(1,190	)		(1,456	)		(4,020	)		(4,225	)
Open claims at end of period		5,079			5,220			5,079			5,220

The number of open claims at September 30, 2017 decreased by 141 claims as compared to the number of open claims at September 30, 2016. At September 30, 2017, our incurred amounts for certain accident years, particularly 2015, 2014 and 2013, 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 September 30, 2017, 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, 2016.

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, 2016, 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, 2016.

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.

26

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.

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 September 30, 2017, 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 September 30, 2017 under this program.  There were no shares repurchased during the nine months ended September 30, 2017 and 2016. 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.  

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Item 6. Exhibits.

Exhibit No.	Description
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

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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.
October 27, 2017	/s/ G. Janelle Frost
	G. Janelle Frost
	President, Chief Executive Officer and Director
	(Principal Executive Officer)
October 27, 2017	/s/ Neal A. Fuller
	Neal A. Fuller
	Executive Vice President and Chief Financial Officer
	(Principal Financial and Accounting Officer)

29

EXHIBIT INDEX

Exhibit No.	Description
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

30

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: October 27, 2017	/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: October 27, 2017	/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 September 30, 2017, 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: October 27, 2017	/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.

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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 24, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q3
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		19,244,023

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Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Investments:
Fixed maturity securities—held-to-maturity, at amortized cost (fair value $610,151 and $568,931 in 2017 and 2016, respectively)	$ 598,658	$ 562,434
Fixed maturity securities—available-for-sale, at fair value (cost $462,892 and $479,871 in 2017 and 2016, respectively)	467,256	479,097
Equity securities—available-for-sale, at fair value (cost $7,499 and $0 in 2017 and 2016, respectively)	7,801	33
Short-term investments	69,526	29,580
Other investments	1,280	13,330
Total investments	1,144,521	1,084,474
Cash and cash equivalents	80,378	58,936
Amounts recoverable from reinsurers	84,958	83,666
Premiums receivable, net of allowance	185,497	183,005
Deferred income taxes	31,572	33,811
Accrued interest receivable	11,235	11,360
Property and equipment, net	6,320	6,636
Deferred policy acquisition costs	20,906	19,300
Other assets	17,861	37,668
Total assets	1,583,248	1,518,856
Liabilities:
Reserves for loss and loss adjustment expenses	755,026	742,776
Unearned premiums	165,820	162,028
Reinsurance premiums payable		28
Amounts held for others	35,604	31,974
Policyholder deposits	48,003	49,130
Insurance-related assessments	30,293	31,742
Federal income tax payable	1,909	4,017
Accounts payable and other liabilities	41,827	31,510
Payable for investments purchased	9,821	9,501
Total liabilities	1,088,303	1,062,706
Shareholders’ equity:
Common stock: voting—$0.01 par value authorized shares—50,000,000 in 2017 and 2016; 20,502,273 and 20,488,385 shares issued and 19,244,023 and 19,230,135 shares outstanding in 2017 and 2016, respectively	204	204
Additional paid-in capital	209,622	208,390
Treasury stock at cost (1,258,250 shares in 2017 and 2016)	(22,370)	(22,370)
Accumulated earnings	304,456	270,418
Accumulated other comprehensive income (loss), net	3,033	(492)
Total shareholders’ equity	494,945	456,150
Total liabilities and shareholders’ equity	$ 1,583,248	$ 1,518,856

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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Fixed maturity securities, fair value	$ 610,151	$ 568,931
Fixed maturity securities, cost	462,892	479,871
Equity securities, cost	$ 7,499	$ 0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	20,502,273	20,488,385
Common stock, shares outstanding	19,244,023	19,230,135
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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues
Gross premiums written	$ 87,035	$ 88,837	$ 269,152	$ 292,443
Ceded premiums written	(1,992)	(2,945)	(6,581)	(8,046)
Net premiums written	85,043	85,892	262,571	284,397
Net premiums earned	85,118	89,918	258,779	276,607
Net investment income	7,788	8,006	21,969	20,251
Net realized gains (losses) on investments	(192)	181	(761)	974
Fee and other income	90	101	284	272
Total revenues	92,804	98,206	280,271	298,104
Expenses
Loss and loss adjustment expenses incurred	48,394	50,526	151,038	146,413
Underwriting and certain other operating costs	7,218	8,104	23,363	25,325
Commissions	6,030	6,362	18,424	19,731
Salaries and benefits	6,033	6,298	18,899	18,403
Policyholder dividends	1,573	889	4,107	3,195
Total expenses	69,248	72,179	215,831	213,067
Income before income taxes	23,556	26,027	64,440	85,037
Income tax expense	6,979	8,131	18,858	26,245
Net income	16,577	17,896	45,582	58,792
Net income available to common shareholders	$ 16,577	$ 17,896	$ 45,582	$ 58,792
Earnings per share
Basic	$ 0.86	$ 0.94	$ 2.38	$ 3.08
Diluted	$ 0.86	$ 0.93	$ 2.37	$ 3.06
Shares used in computing earnings per share
Basic	19,171,912	19,121,947	19,161,529	19,092,298
Diluted	19,236,114	19,190,191	19,235,955	19,186,398
Cash dividends declared per common share	$ 0.20	$ 0.18	$ 0.60	$ 0.54

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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 16,577	$ 17,896	$ 45,582	$ 58,792
Other comprehensive income:
Unrealized gain (loss) on securities, net of tax	617	(1,713)	3,525	4,009
Comprehensive income	$ 17,194	$ 16,183	$ 49,107	$ 62,801

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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, 2015						$ 2,587
Comprehensive income	$ 62,801
Ending Balance at Sep. 30, 2016						6,596
Beginning Balance at Jun. 30, 2016						8,309
Comprehensive income	16,183
Ending Balance at Sep. 30, 2016						6,596
Beginning Balance at Dec. 31, 2016	$ 456,150	$ 204	$ 208,390	$ (22,370)	$ 270,418	(492)
Beginning Balance, Shares at Dec. 31, 2016	20,488,385	20,488,385
Treasury Stock Beginning Balance, Shares at Dec. 31, 2016	(1,258,250)			(1,258,250)
Comprehensive income	$ 49,107				45,582	3,525
Restricted common stock issued	396		396
Restricted common stock issued, Shares		13,888
Share-based compensation	836		836
Dividends to shareholders	(11,544)				(11,544)
Ending Balance at Sep. 30, 2017	$ 494,945	$ 204	209,622	$ (22,370)	304,456	3,033
Ending Balance, Shares at Sep. 30, 2017	20,502,273	20,502,273
Treasury Stock Ending Balance, Shares at Sep. 30, 2017	(1,258,250)			(1,258,250)
Beginning Balance at Jun. 30, 2017						2,416
Comprehensive income	$ 17,194
Ending Balance at Sep. 30, 2017	$ 494,945	$ 204	$ 209,622	$ (22,370)	$ 304,456	$ 3,033
Ending Balance, Shares at Sep. 30, 2017	20,502,273	20,502,273
Treasury Stock Ending Balance, Shares at Sep. 30, 2017	(1,258,250)			(1,258,250)

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating activities
Net income	$ 45,582	$ 58,792
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	760	884
Net amortization of investments	10,815	12,306
Deferred income taxes	342	(532)
Net realized (gains) losses on investments	761	(959)
Net realized losses on disposal of assets	2	1
Share-based compensation	1,283	1,143
Changes in operating assets and liabilities:
Premiums receivable, net	(2,492)	(15,623)
Accrued interest receivable	125	(263)
Deferred policy acquisition costs	(1,606)	49
Amounts held by others	27,848	1,016
Other assets	(5,131)	(2,929)
Reserves for loss and loss adjustment expenses	12,250	18,243
Unearned premiums	3,792	7,790
Reinsurance balances	(1,320)	(11,892)
Amounts held for others and policyholder deposits	2,503	6,557
Accounts payable and other liabilities	6,813	8,285
Net cash provided by operating activities	102,327	82,868
Investing activities
Purchases of investments held-to-maturity	(149,981)	(102,830)
Purchases of investments available-for-sale	(86,615)	(161,482)
Purchases of short-term investments	(53,789)	(12,132)
Proceeds from maturities of investments held-to-maturity	112,715	136,896
Proceeds from sales and maturities of investments available-for-sale	82,270	75,470
Proceeds from sales and maturities of short-term investments	17,610	8,033
Proceeds from redemptions of other investments	9,000
Purchases of property and equipment	(446)	(1,091)
Net cash used in investing activities	(69,236)	(57,136)
Financing activities
Proceeds from stock option exercises		837
Tax benefit from share-based payments		976
Dividends to shareholders	(11,649)	(10,414)
Net cash used in financing activities	(11,649)	(8,601)
Change in cash and cash equivalents	21,442	17,131
Cash and cash equivalents at beginning of period	58,936	69,481
Cash and cash equivalents at end of period	$ 80,378	$ 86,612

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Basis of Presentation

9 Months Ended

Sep. 30, 2017

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 2017 and 2016.

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, 2016.

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 March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09, Compensation – Stock Compensation (Topic 718):  Improvements to Employee Share-Based Payment Accounting.  The new guidance requires that all tax effects related to share-based payments be made through the income statement at the time of settlement as opposed to recognizing excess tax benefits in additional paid-in capital.  It also requires the cash flows resulting from share-based payments to be included as an operating activity.  In addition to the changes, the guidance permits reporting entities to elect to estimate forfeitures related to share-based payments or recognize them as they occur.  The threshold to qualify for equity classification has also been revised to permit withholding up to the maximum statutory tax rates in the applicable jurisdictions.  The adoption of this new guidance in the first quarter of 2017 did not have a material impact on our financial condition and results of operations.

Prospective Accounting Guidance

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 is effective for us in the first quarter of 2018.  Revenue from insurance contracts is excluded from the scope of the new guidance and as a result, adoption of this guidance is not expected to have a material impact on our financial condition and results of operations.

In January 2016, the 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.  This standard is effective for us in the first quarter of 2018.  Based on the equity investments currently held by the Company, there would not be a material impact on the Company's financial condition and results of operations if the new guidance were to be adopted in the current accounting period. The impact on the Company's results of operations and financial position at the date of adoption of the updated guidance will be determined by the equity investments held by the Company and the economic conditions at that time.

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 the impact as the implementation date approaches.

All other issued but not yet effective accounting and reporting standards as of September 30, 2017 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

9 Months Ended

Sep. 30, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Options and Restricted Stock

Note 2. Stock Options and Restricted Stock

As of September 30, 2017, 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, 2016 for additional information regarding the Company’s incentive plans.

During the nine months ended September 30, 2017, the Company granted 7,434 and 6,454 shares of restricted common stock to executive officers and non-employee directors, respectively.  The market value of the restricted shares granted totaled $0.7 million.  During the nine months ended September 30, 2016, the Company granted 27,077 and 5,952 shares of restricted common stock to executive officers and non-employee directors, respectively. The market value of the restricted shares granted totaled $1.9 million.

During the nine months ended September 30, 2017, no options to purchase shares of common stock were exercised. During the nine months ended September 30, 2016, options to purchase 68,879 shares of common stock were exercised. In connection with these exercises, the Company received $0.8 million of stock option proceeds.

The Company recognized share-based compensation expense of $0.3 million in the quarters ended September 30, 2017 and 2016.  The Company recognized share-based compensation expense of $1.3 million in the nine months ended September 30, 2017 and $1.1 million for the same period of 2016.

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Earnings Per Share

9 Months Ended

Sep. 30, 2017

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 income available to common shareholders 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 or warrants were exercised or restricted stock becomes vested, and includes the “if converted” method for participating securities if the effect is dilutive.

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(in thousands, except share and per share amounts)
Basic EPS:
Net income available to common shareholders - basic	$	16,577	$	17,896	$	45,582	$	58,792
Basic weighted average common shares		19,171,912		19,121,947		19,161,529		19,092,298
Basic earnings per common share	$	0.86	$	0.94	$	2.38	$	3.08
Diluted EPS:
Net income available to common shareholders - diluted	$	16,577	$	17,896	$	45,582	$	58,792
Diluted weighted average common shares:
Weighted average common shares		19,171,912		19,121,947		19,161,529		19,092,298
Stock options and restricted stock		64,202		68,244		74,426		94,100
Diluted weighted average common shares		19,236,114		19,190,191		19,235,955		19,186,398
Diluted earnings per common share	$	0.86	$	0.93	$	2.37	$	3.06

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Investments

9 Months Ended

Sep. 30, 2017

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 September 30, 2017 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	430,470	$	10,348	$	(573	)	$	440,245
Corporate bonds		121,942		498		(192	)		122,248
U.S. agency-based mortgage-backed securities		10,928		750		(2	)		11,676
U.S. Treasury securities and obligations of U.S.    government agencies		33,672		642		(94	)		34,220
Asset-backed securities		1,646		132		(16	)		1,762
Totals	$	598,658	$	12,370	$	(877	)	$	610,151

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 September 30, 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	$	236,666	$	6,229	$	(1,243	)	$	241,652
Corporate bonds		151,339		699		(54	)		151,984
U.S. agency-based mortgage-backed securities		13,408		8		(748	)		12,668
U.S. Treasury securities and obligations of U.S.      government agencies		61,479		71		(598	)		60,952
Total fixed maturity		462,892		7,007		(2,643	)		467,256
Equity securities		7,499		302		—			7,801
Other investments		1,000		280		—			1,280
Totals	$	471,391	$	7,589	$	(2,643	)	$	476,337

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, 2016 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	394,875	$	7,622	$	(3,014	)	$	399,483
Corporate bonds		143,858		423		(265	)		144,016
Commercial mortgage-backed securities		70		—		—			70
U.S. agency-based mortgage-backed securities		9,967		948		—			10,915
U.S. Treasury securities and obligations    of U.S. government agencies		11,737		746		(67	)		12,416
Asset-backed securities		1,927		163		(59	)		2,031
Totals	$	562,434	$	9,902	$	(3,405	)	$	568,931

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, 2016 are summarized as follows:

	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Fixed maturity:
States and political subdivisions	$	231,168	$	4,340	$	(3,215	)	$	232,293
Corporate bonds		182,350		436		(271	)		182,515
U.S. agency-based mortgage-backed securities		10,428		17		(1,103	)		9,342
U.S. Treasury securities and obligations    of U.S. government agencies		55,925		—		(978	)		54,947
Total fixed maturity		479,871		4,793		(5,567	)		479,097
Equity securities		—		33		—			33
Other investments		10,000		3,330		—			13,330
Totals	$	489,871	$	8,156	$	(5,567	)	$	492,460

A summary of the amortized cost and fair value of investments in fixed maturity securities, classified as held-to-maturity at September 30, 2017, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	113,488	$	113,988
After one year through five years		239,333		243,851
After five years through ten years		98,935		101,450
After ten years		134,328		137,424
U.S. agency-based mortgage-backed securities		10,928		11,676
Asset-backed securities		1,646		1,762
Totals	$	598,658	$	610,151

A summary of the amortized cost and fair value of investments in fixed maturity securities, classified as available-for-sale at September 30, 2017, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	85,898	$	86,051
After one year through five years		160,278		161,077
After five years through ten years		32,117		32,427
After ten years		171,191		175,033
U.S. agency-based mortgage-backed securities		13,408		12,668
Totals	$	462,892	$	467,256

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)
September 30, 2017
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	61,279	$	205	$	22,658	$	368	$	83,937	$	573
Corporate bonds		46,074		183		3,041		9		49,115		192
U.S. agency-based mortgage-backed securities		2,993		2		—		—		2,993		2
U.S. Treasury securities and obligations of U.S.    government agencies		24,242		45		3,977		49		28,219		94
Asset-backed securities		—		—		1,023		16		1,023		16
Total held-to-maturity securities		134,588		435		30,699		442		165,287		877
Available-for Sale
Fixed maturity securities:
States and political subdivisions	$	16,373	$	101	$	26,213	$	1,142	$	42,586	$	1,243
Corporate bonds		15,357		35		4,845		19		20,202		54
U.S. agency-based mortgage-backed securities		5,359		19		3,497		729		8,856		748
U.S. Treasury securities and obligations of U.S.    government agencies		51,182		550		4,002		48		55,184		598
Total available-for-sale securities		88,271		705		38,557		1,938		126,828		2,643
Total	$	222,859	$	1,140	$	69,256	$	2,380	$	292,115	$	3,520

	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, 2016
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	157,507	$	3,014	$	—	$	—	$	157,507	$	3,014
Corporate bonds		44,654		202		6,292		63		50,946		265
U.S. Treasury securities and obligations of U.S.    government agencies		3,968		67		—		—		3,968		67
Asset-backed securities		—		—		1,173		59		1,173		59
Total held-to-maturity securities		206,129		3,283		7,465		122		213,594		3,405
Available-for Sale
Fixed maturity securities:
States and political subdivisions	$	73,505	$	2,976	$	4,523	$	239	$	78,028	$	3,215
Corporate bonds		41,419		111		7,922		160		49,341		271
U.S. agency-based mortgage-backed securities		3,702		48		3,607		1,055		7,309		1,103
U.S. Treasury securities and obligations of U.S.    government agencies		54,947		978		—		—		54,947		978
Total available-for-sale securities		173,573		4,113		16,052		1,454		189,625		5,567
Total	$	379,702	$	7,396	$	23,517	$	1,576	$	403,219	$	8,972

At September 30, 2017, the Company held 169 individual fixed maturity securities that were in an unrealized loss position, of which 48 individual fixed maturity securities were in a continuous unrealized loss position for longer than 12 months.

The Company holds investments in a limited partnership hedge fund accounted for under the equity method. The carrying value of this investment is $1.3 million at September 30, 2017.

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. 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 nine months ended September 30, 2017 and 2016, there were no impairment losses recognized for other-than-temporary declines in the fair value of our investments

Net realized losses in the nine months ended September 30, 2017 were $0.8 million resulting from called fixed maturity securities. Net realized gains in the nine months ended September 30, 2016 were $1.0 million resulting from the sale of fixed maturity securities classified as available-for-sale.

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Income Taxes

9 Months Ended

Sep. 30, 2017

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 September 30, 2017, the Company had no material unrecognized tax benefits and no adjustments to liabilities or operations were required.

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 September 30, 2017 and 2016.

Tax years 2013 through 2016 are subject to examination by the federal and state taxing authorities.

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Loss Reserves

9 Months Ended

Sep. 30, 2017

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, 2016 for additional information regarding the Company’s loss and loss adjustment expense development.

The following table provides the Company’s liability for unpaid claims and claim adjustment expenses, net of related amounts recoverable from reinsurers, for nine months ended September 30, 2017 and 2016:

	Nine Months Ended September 30,
	2017			2016
	(in thousands)
Balance, beginning of period	$	742,776		$	718,033
Less amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		78,256			64,858
Net balance, beginning of period		664,520			653,175
Add incurred related to:
Current accident year		178,562			187,819
Prior accident years		(27,524	)		(41,406	)
Total incurred		151,038			146,413
Less paid related to:
Current accident year		31,749			31,209
Prior accident years		108,284			108,485
Total paid		140,033			139,694
Net balance, end of period		675,525			659,894
Add amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		79,501			76,382
Balance, end of period	$	755,026		$	736,276

The foregoing reconciliation reflects favorable development of the net reserves at September 30, 2017 and September 30, 2016. The favorable development reduced loss and loss adjustment expense incurred by $27.5 million and $41.4 million in 2017 and 2016, 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 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.

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Comprehensive Income and Accumulated Other Comprehensive Income

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Comprehensive Income and Accumulated Other Comprehensive Income

Note 7. Comprehensive Income and Accumulated Other Comprehensive Income

Comprehensive income was $17.2 million for the three months ended September 30, 2017, compared to $16.2 million for the three months ended September 30, 2016.  Comprehensive income was $49.1 million for the nine months ended September 30, 2017, compared to $62.8 million for the same period in 2016.  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 securities.

Comprehensive income includes net income plus unrealized gains (losses) on our available-for-sale investment securities, net of tax. In reporting comprehensive income on a net basis in the statements of income, we used a 35 percent tax rate. 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 September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Beginning balance	$	2,416		$	8,309		$	(492	)	$	2,587
Other comprehensive income (loss) before    reclassification		820			(1,589	)		4,032			4,286
Amounts reclassified from accumulated other    comprehensive income		(203	)		(124	)		(507	)		(277	)
Net current period other comprehensive    income (loss)		617			(1,713	)		3,525			4,009
Ending balance	$	3,033		$	6,596		$	3,033		$	6,596

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						Nine Months Ended						Affected line item in the
Comprehensive Income	September 30,						September 30,						statement of income
	2017			2016			2017			2016
	(in thousands)
Unrealized gains on available-for-    sale securities	$	312		$	191		$	780		$	426		Net realized gains (losses) on    investments
		312			191			780			426		Income before income taxes
		(109	)		(67	)		(273	)		(149	)	Income tax expense
	$	203		$	124		$	507		$	277		Net income

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Fair Value Measurements

9 Months Ended

Sep. 30, 2017

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 nine months ended September 30, 2017.

At September 30, 2017, assets and liabilities measured at fair value on a recurring basis are summarized below:

	September 30, 2017
	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	$	—	$	241,652	$	—	$	241,652
Corporate bonds		—		151,984		—		151,984
U.S. agency-based mortgage-backed securities		—		12,668		—		12,668
U.S. Treasury securities		60,952		—		—		60,952
Total securities available for sale—fixed maturity		60,952		406,304		—		467,256
Securities available for sale—equity:
Domestic common stock		7,801		—		—		7,801
Total available for sale	$	68,753	$	406,304	$	—	$	475,057

At September 30, 2017, assets and liabilities measured at amortized cost are summarized below:

	September 30, 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	$	—	$	440,245	$	—	$	440,245
Corporate bonds		—		122,248		—		122,248
U.S. agency-based mortgage-backed securities		—		11,676		—		11,676
U.S. Treasury securities		6,785		—		—		6,785
Obligations of U.S. government agencies		—		27,435		—		27,435
Asset-backed securities		—		1,762		—		1,762
Total held-to-maturity	$	6,785	$	603,366	$	—	$	610,151

At December 31, 2016, assets and liabilities measured at fair value on a recurring basis are summarized below:

	December 31, 2016
	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	$	—	$	232,293	$	—	$	232,293
Corporate bonds		—		182,515		—		182,515
U.S. agency-based mortgage-backed securities		—		9,342		—		9,342
U.S. Treasury securities and obligations    of U.S. government agencies		54,947		—		—		54,947
Total available for sale—fixed maturity	$	54,947	$	424,150	$	—	$	479,097
Securities available for sale—equity:
Domestic common stock		33		—		—		33
Total available for sale	$	54,980	$	424,150	$	—	$	479,130

At December 31, 2016, assets and liabilities measured at amortized cost are summarized below:

	December 31, 2016
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Securities held-to-maturity—fixed maturity:
States and political subdivisions	$	—	$	399,483	$	—	$	399,483
Corporate bonds		—		144,016		—		144,016
Commercial mortgage-backed securities		—		70		—		70
U.S. agency-based mortgage-backed securities		—		10,915		—		10,915
U.S. Treasury securities		6,779		—		—		6,779
Obligations of U.S. government agencies		—		5,637		—		5,637
Asset-backed securities		—		2,031		—		2,031
Total held-to-maturity	$	6,779	$	562,152	$	—	$	568,931

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.

At September 30, 2017, the Company held two securities measured at fair value on a nonrecurring basis due to a recognized impairment of $0.3 million. The securities are valued using Level 2 inputs and had a value of $0.3 million at September 30, 2017.  The securities were valued at fair value at the time of impairment and are currently being carried at the adjusted amortized cost.  The fair value of the securities was $0.4 million at September 30, 2017.

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.

Other Investments —Other investments consist of a limited partnership interest that is accounted for under the equity method valued using the net asset value provided by the general partner of the limited partnership, which approximates the fair value of the interest. The limited partnership’s objective is to generate absolute returns by investing long and short in publicly-traded global securities. Redemptions are allowed monthly following a 60-day notice with no lock up periods. The Company has no unfunded commitments related to the limited partnership hedge fund.

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

	As of  September 30, 2017				As of  December 31, 2016
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(in thousands)
Assets:
Fixed maturity securities—held-to-maturity	$	598,658	$	610,151	$	562,434	$	568,931
Fixed maturity securities—available-for-sale		467,256		467,256		479,097		479,097
Equity securities		7,801		7,801		33		33
Short-term investments		69,526		69,526		29,580		29,580
Other investments		1,280		1,280		13,330		13,330
Cash and cash equivalents		80,378		80,378		58,936		58,936

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Treasury Stock

9 Months Ended

Sep. 30, 2017

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 nine months ended September 30, 2017. Since the beginning of this plan, the Company has repurchased a total of 1,258,250 shares for $22.4 million, or an average price of $17.78, including commissions.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2017

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 10. Commitments and Contingencies

In February 2015, the Company was notified of an adverse verdict against its subsidiary, AIIC, related to a 2009 workers’ compensation claim in the State of Iowa. The verdict was for $25.3 million, of which $0.3 million was for actual damages and $25.0 million was awarded for punitive damages. The Company posted an appeal bond in the amount of $27.8 million, as required by law. AIIC appealed both the verdict and the damage awards. On May 19, 2017, the Supreme Court of Iowa reversed the judgments for actual and punitive damages and remanded the case for a new trial, presently scheduled for first quarter 2018.  On July 24, 2017, the $27.8 million appeal bond was returned to AIIC.

The Company maintains reinsurance against catastrophic losses, including court ordered judgments. As of September 30, 2017, the Company’s total reserve for the claim was $2.3 million. The $2.3 million reserve does not include payments that the Company has previously paid in this case. The payments, plus the $2.3 million reserve, total $5.4 million. The Company’s retention is $5.0 million before its reinsurance providers are obligated to reimburse the Company for additional costs. The Company presently believes that the reserve amount, together with its reinsurance coverage, is adequate to satisfy this claim.

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Subsequent Events

9 Months Ended

Sep. 30, 2017

Subsequent Events [Abstract]

Subsequent Events

Note 11. Subsequent Events

On October 23, 2017, the Company’s Board of Directors declared a quarterly cash dividend of $0.20 per share payable on December 28, 2017 to shareholders of record as of December 14, 2017. The Board considers the payment of a regular cash dividend each calendar quarter.

On October 23, 2017, the Company’s Board of Directors declared an extraordinary cash dividend of $3.50 per share payable on December 28, 2017 to shareholders of record on December 14, 2017.

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Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2017

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Adopted Accounting Guidance

Adopted Accounting Guidance

In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09, Compensation – Stock Compensation (Topic 718):  Improvements to Employee Share-Based Payment Accounting.  The new guidance requires that all tax effects related to share-based payments be made through the income statement at the time of settlement as opposed to recognizing excess tax benefits in additional paid-in capital.  It also requires the cash flows resulting from share-based payments to be included as an operating activity.  In addition to the changes, the guidance permits reporting entities to elect to estimate forfeitures related to share-based payments or recognize them as they occur.  The threshold to qualify for equity classification has also been revised to permit withholding up to the maximum statutory tax rates in the applicable jurisdictions.  The adoption of this new guidance in the first quarter of 2017 did not have a material impact on our financial condition and results of operations.

Prospective Accounting Guidance

Prospective Accounting Guidance

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 is effective for us in the first quarter of 2018.  Revenue from insurance contracts is excluded from the scope of the new guidance and as a result, adoption of this guidance is not expected to have a material impact on our financial condition and results of operations.

In January 2016, the 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.  This standard is effective for us in the first quarter of 2018.  Based on the equity investments currently held by the Company, there would not be a material impact on the Company's financial condition and results of operations if the new guidance were to be adopted in the current accounting period. The impact on the Company's results of operations and financial position at the date of adoption of the updated guidance will be determined by the equity investments held by the Company and the economic conditions at that time.

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 the impact as the implementation date approaches.

All other issued but not yet effective accounting and reporting standards as of September 30, 2017 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)

9 Months Ended

Sep. 30, 2017

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)

9 Months Ended

Sep. 30, 2017

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 or warrants were exercised or restricted stock becomes vested, and includes the “if converted” method for participating securities if the effect is dilutive.

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(in thousands, except share and per share amounts)
Basic EPS:
Net income available to common shareholders - basic	$	16,577	$	17,896	$	45,582	$	58,792
Basic weighted average common shares		19,171,912		19,121,947		19,161,529		19,092,298
Basic earnings per common share	$	0.86	$	0.94	$	2.38	$	3.08
Diluted EPS:
Net income available to common shareholders - diluted	$	16,577	$	17,896	$	45,582	$	58,792
Diluted weighted average common shares:
Weighted average common shares		19,171,912		19,121,947		19,161,529		19,092,298
Stock options and restricted stock		64,202		68,244		74,426		94,100
Diluted weighted average common shares		19,236,114		19,190,191		19,235,955		19,186,398
Diluted earnings per common share	$	0.86	$	0.93	$	2.37	$	3.06

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Investments (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30, 2017 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	430,470	$	10,348	$	(573	)	$	440,245
Corporate bonds		121,942		498		(192	)		122,248
U.S. agency-based mortgage-backed securities		10,928		750		(2	)		11,676
U.S. Treasury securities and obligations of U.S.    government agencies		33,672		642		(94	)		34,220
Asset-backed securities		1,646		132		(16	)		1,762
Totals	$	598,658	$	12,370	$	(877	)	$	610,151

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, 2016 are summarized as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
States and political subdivisions	$	394,875	$	7,622	$	(3,014	)	$	399,483
Corporate bonds		143,858		423		(265	)		144,016
Commercial mortgage-backed securities		70		—		—			70
U.S. agency-based mortgage-backed securities		9,967		948		—			10,915
U.S. Treasury securities and obligations    of U.S. government agencies		11,737		746		(67	)		12,416
Asset-backed securities		1,927		163		(59	)		2,031
Totals	$	562,434	$	9,902	$	(3,405	)	$	568,931

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 September 30, 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	$	236,666	$	6,229	$	(1,243	)	$	241,652
Corporate bonds		151,339		699		(54	)		151,984
U.S. agency-based mortgage-backed securities		13,408		8		(748	)		12,668
U.S. Treasury securities and obligations of U.S.      government agencies		61,479		71		(598	)		60,952
Total fixed maturity		462,892		7,007		(2,643	)		467,256
Equity securities		7,499		302		—			7,801
Other investments		1,000		280		—			1,280
Totals	$	471,391	$	7,589	$	(2,643	)	$	476,337

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, 2016 are summarized as follows:

	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Fixed maturity:
States and political subdivisions	$	231,168	$	4,340	$	(3,215	)	$	232,293
Corporate bonds		182,350		436		(271	)		182,515
U.S. agency-based mortgage-backed securities		10,428		17		(1,103	)		9,342
U.S. Treasury securities and obligations    of U.S. government agencies		55,925		—		(978	)		54,947
Total fixed maturity		479,871		4,793		(5,567	)		479,097
Equity securities		—		33		—			33
Other investments		10,000		3,330		—			13,330
Totals	$	489,871	$	8,156	$	(5,567	)	$	492,460

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)
September 30, 2017
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	61,279	$	205	$	22,658	$	368	$	83,937	$	573
Corporate bonds		46,074		183		3,041		9		49,115		192
U.S. agency-based mortgage-backed securities		2,993		2		—		—		2,993		2
U.S. Treasury securities and obligations of U.S.    government agencies		24,242		45		3,977		49		28,219		94
Asset-backed securities		—		—		1,023		16		1,023		16
Total held-to-maturity securities		134,588		435		30,699		442		165,287		877
Available-for Sale
Fixed maturity securities:
States and political subdivisions	$	16,373	$	101	$	26,213	$	1,142	$	42,586	$	1,243
Corporate bonds		15,357		35		4,845		19		20,202		54
U.S. agency-based mortgage-backed securities		5,359		19		3,497		729		8,856		748
U.S. Treasury securities and obligations of U.S.    government agencies		51,182		550		4,002		48		55,184		598
Total available-for-sale securities		88,271		705		38,557		1,938		126,828		2,643
Total	$	222,859	$	1,140	$	69,256	$	2,380	$	292,115	$	3,520

	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, 2016
Held-to-Maturity
Fixed maturity securities:
States and political subdivisions	$	157,507	$	3,014	$	—	$	—	$	157,507	$	3,014
Corporate bonds		44,654		202		6,292		63		50,946		265
U.S. Treasury securities and obligations of U.S.    government agencies		3,968		67		—		—		3,968		67
Asset-backed securities		—		—		1,173		59		1,173		59
Total held-to-maturity securities		206,129		3,283		7,465		122		213,594		3,405
Available-for Sale
Fixed maturity securities:
States and political subdivisions	$	73,505	$	2,976	$	4,523	$	239	$	78,028	$	3,215
Corporate bonds		41,419		111		7,922		160		49,341		271
U.S. agency-based mortgage-backed securities		3,702		48		3,607		1,055		7,309		1,103
U.S. Treasury securities and obligations of U.S.    government agencies		54,947		978		—		—		54,947		978
Total available-for-sale securities		173,573		4,113		16,052		1,454		189,625		5,567
Total	$	379,702	$	7,396	$	23,517	$	1,576	$	403,219	$	8,972

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 September 30, 2017, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	113,488	$	113,988
After one year through five years		239,333		243,851
After five years through ten years		98,935		101,450
After ten years		134,328		137,424
U.S. agency-based mortgage-backed securities		10,928		11,676
Asset-backed securities		1,646		1,762
Totals	$	598,658	$	610,151

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 September 30, 2017, by contractual maturity, is as follows:

	Amortized Cost		Fair Value
	(in thousands)
Maturity:
Within one year	$	85,898	$	86,051
After one year through five years		160,278		161,077
After five years through ten years		32,117		32,427
After ten years		171,191		175,033
U.S. agency-based mortgage-backed securities		13,408		12,668
Totals	$	462,892	$	467,256

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Loss Reserves (Tables)

9 Months Ended

Sep. 30, 2017

Insurance [Abstract]

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

The following table provides the Company’s liability for unpaid claims and claim adjustment expenses, net of related amounts recoverable from reinsurers, for nine months ended September 30, 2017 and 2016:

	Nine Months Ended September 30,
	2017			2016
	(in thousands)
Balance, beginning of period	$	742,776		$	718,033
Less amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		78,256			64,858
Net balance, beginning of period		664,520			653,175
Add incurred related to:
Current accident year		178,562			187,819
Prior accident years		(27,524	)		(41,406	)
Total incurred		151,038			146,413
Less paid related to:
Current accident year		31,749			31,209
Prior accident years		108,284			108,485
Total paid		140,033			139,694
Net balance, end of period		675,525			659,894
Add amounts recoverable from reinsurers    on unpaid loss and loss adjustment expenses		79,501			76,382
Balance, end of period	$	755,026		$	736,276

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Comprehensive Income and Accumulated Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
	(in thousands)
Beginning balance	$	2,416		$	8,309		$	(492	)	$	2,587
Other comprehensive income (loss) before    reclassification		820			(1,589	)		4,032			4,286
Amounts reclassified from accumulated other    comprehensive income		(203	)		(124	)		(507	)		(277	)
Net current period other comprehensive    income (loss)		617			(1,713	)		3,525			4,009
Ending balance	$	3,033		$	6,596		$	3,033		$	6,596

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						Nine Months Ended						Affected line item in the
Comprehensive Income	September 30,						September 30,						statement of income
	2017			2016			2017			2016
	(in thousands)
Unrealized gains on available-for-    sale securities	$	312		$	191		$	780		$	426		Net realized gains (losses) on    investments
		312			191			780			426		Income before income taxes
		(109	)		(67	)		(273	)		(149	)	Income tax expense
	$	203		$	124		$	507		$	277		Net income

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis

At September 30, 2017, assets and liabilities measured at fair value on a recurring basis are summarized below:

	September 30, 2017
	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	$	—	$	241,652	$	—	$	241,652
Corporate bonds		—		151,984		—		151,984
U.S. agency-based mortgage-backed securities		—		12,668		—		12,668
U.S. Treasury securities		60,952		—		—		60,952
Total securities available for sale—fixed maturity		60,952		406,304		—		467,256
Securities available for sale—equity:
Domestic common stock		7,801		—		—		7,801
Total available for sale	$	68,753	$	406,304	$	—	$	475,057

At December 31, 2016, assets and liabilities measured at fair value on a recurring basis are summarized below:

	December 31, 2016
	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	$	—	$	232,293	$	—	$	232,293
Corporate bonds		—		182,515		—		182,515
U.S. agency-based mortgage-backed securities		—		9,342		—		9,342
U.S. Treasury securities and obligations    of U.S. government agencies		54,947		—		—		54,947
Total available for sale—fixed maturity	$	54,947	$	424,150	$	—	$	479,097
Securities available for sale—equity:
Domestic common stock		33		—		—		33
Total available for sale	$	54,980	$	424,150	$	—	$	479,130

Schedule of Assets and Liabilities Measured at Amortized Cost

At September 30, 2017, assets and liabilities measured at amortized cost are summarized below:

	September 30, 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	$	—	$	440,245	$	—	$	440,245
Corporate bonds		—		122,248		—		122,248
U.S. agency-based mortgage-backed securities		—		11,676		—		11,676
U.S. Treasury securities		6,785		—		—		6,785
Obligations of U.S. government agencies		—		27,435		—		27,435
Asset-backed securities		—		1,762		—		1,762
Total held-to-maturity	$	6,785	$	603,366	$	—	$	610,151

At December 31, 2016, assets and liabilities measured at amortized cost are summarized below:

	December 31, 2016
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
	(in thousands)
Securities held-to-maturity—fixed maturity:
States and political subdivisions	$	—	$	399,483	$	—	$	399,483
Corporate bonds		—		144,016		—		144,016
Commercial mortgage-backed securities		—		70		—		70
U.S. agency-based mortgage-backed securities		—		10,915		—		10,915
U.S. Treasury securities		6,779		—		—		6,779
Obligations of U.S. government agencies		—		5,637		—		5,637
Asset-backed securities		—		2,031		—		2,031
Total held-to-maturity	$	6,779	$	562,152	$	—	$	568,931

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  September 30, 2017				As of  December 31, 2016
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(in thousands)
Assets:
Fixed maturity securities—held-to-maturity	$	598,658	$	610,151	$	562,434	$	568,931
Fixed maturity securities—available-for-sale		467,256		467,256		479,097		479,097
Equity securities		7,801		7,801		33		33
Short-term investments		69,526		69,526		29,580		29,580
Other investments		1,280		1,280		13,330		13,330
Cash and cash equivalents		80,378		80,378		58,936		58,936

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Basis of Presentation - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Percentage of comparable consolidated amounts	95.00%	95.00%

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Stock Options and Restricted Stock - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Incentive_Plan shares	Sep. 30, 2016 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans | Incentive_Plan			3
Stock options exercised, Shares | shares			0	68,879
Proceeds from stock option exercises | $				$ 837
Share-based compensation expense | $	$ 300	$ 300	$ 1,300	1,100
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market value of restricted shares granted | $			$ 700	$ 1,900
Restricted Stock Units (RSUs) [Member] | Executive Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted common stock granted | shares			7,434	27,077
Restricted Stock Units (RSUs) [Member] | Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted common stock granted | shares			6,454	5,952

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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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share Basic [Abstract]
Net income available to common shareholders - basic	$ 16,577	$ 17,896	$ 45,582	$ 58,792
Basic weighted average common shares	19,171,912	19,121,947	19,161,529	19,092,298
Basic earnings per common share	$ 0.86	$ 0.94	$ 2.38	$ 3.08
Net income available to common shareholders - diluted	$ 16,577	$ 17,896	$ 45,582	$ 58,792
Weighted average common shares	19,171,912	19,121,947	19,161,529	19,092,298
Stock options and restricted stock	64,202	68,244	74,426	94,100
Diluted weighted average common shares	19,236,114	19,190,191	19,235,955	19,186,398
Diluted earnings per common share	$ 0.86	$ 0.93	$ 2.37	$ 3.06

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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	Sep. 30, 2017	Dec. 31, 2016
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	$ 598,658	$ 562,434
Held-to-Maturity, Gross Unrealized Gains	12,370	9,902
Held-to-Maturity, Gross Unrealized Losses	(877)	(3,405)
Held-to-Maturity, Fair Value	610,151	568,931
States and Political Subdivisions [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	430,470	394,875
Held-to-Maturity, Gross Unrealized Gains	10,348	7,622
Held-to-Maturity, Gross Unrealized Losses	(573)	(3,014)
Held-to-Maturity, Fair Value	440,245	399,483
Corporate Bonds [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	121,942	143,858
Held-to-Maturity, Gross Unrealized Gains	498	423
Held-to-Maturity, Gross Unrealized Losses	(192)	(265)
Held-to-Maturity, Fair Value	122,248	144,016
Commercial Mortgage-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals		70
Held-to-Maturity, Fair Value		70
U.S. Agency-Based Mortgage-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	10,928	9,967
Held-to-Maturity, Gross Unrealized Gains	750	948
Held-to-Maturity, Gross Unrealized Losses	(2)
Held-to-Maturity, Fair Value	11,676	10,915
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	33,672	11,737
Held-to-Maturity, Gross Unrealized Gains	642	746
Held-to-Maturity, Gross Unrealized Losses	(94)	(67)
Held-to-Maturity, Fair Value	34,220	12,416
Asset-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost, Totals	1,646	1,927
Held-to-Maturity, Gross Unrealized Gains	132	163
Held-to-Maturity, Gross Unrealized Losses	(16)	(59)
Held-to-Maturity, Fair Value	$ 1,762	$ 2,031

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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	Sep. 30, 2017	Dec. 31, 2016
Investment [Line Items]
Available-for-Sale, Cost or Amortized Cost	$ 471,391	$ 489,871
Available-for-Sale, Gross Unrealized Gains	7,589	8,156
Available-for-Sale, Gross Unrealized Losses	(2,643)	(5,567)
Available-for-Sale, Fair Value	476,337	492,460
Other Investments [Member]
Investment [Line Items]
Available-for-Sale, Cost or Amortized Cost	1,000	10,000
Available-for-Sale, Gross Unrealized Gains	280	3,330
Available-for-Sale, Fair Value	1,280	13,330
Total Fixed Maturity [Member]
Investment [Line Items]
Available-for-Sale, Cost or Amortized Cost	462,892	479,871
Available-for-Sale, Gross Unrealized Gains	7,007	4,793
Available-for-Sale, Gross Unrealized Losses	(2,643)	(5,567)
Available-for-Sale, Fair Value	467,256	479,097
States and Political Subdivisions [Member]
Investment [Line Items]
Available-for-Sale, Cost or Amortized Cost	236,666	231,168
Available-for-Sale, Gross Unrealized Gains	6,229	4,340
Available-for-Sale, Gross Unrealized Losses	(1,243)	(3,215)
Available-for-Sale, Fair Value	241,652	232,293
Corporate Bonds [Member]
Investment [Line Items]
Available-for-Sale, Cost or Amortized Cost	151,339	182,350
Available-for-Sale, Gross Unrealized Gains	699	436
Available-for-Sale, Gross Unrealized Losses	(54)	(271)
Available-for-Sale, Fair Value	151,984	182,515
U.S. Agency-Based Mortgage-Backed Securities [Member]
Investment [Line Items]
Available-for-Sale, Cost or Amortized Cost	13,408	10,428
Available-for-Sale, Gross Unrealized Gains	8	17
Available-for-Sale, Gross Unrealized Losses	(748)	(1,103)
Available-for-Sale, Fair Value	12,668	9,342
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Investment [Line Items]
Available-for-Sale, Cost or Amortized Cost	61,479	55,925
Available-for-Sale, Gross Unrealized Gains	71
Available-for-Sale, Gross Unrealized Losses	(598)	(978)
Available-for-Sale, Fair Value	60,952	54,947
Equity Securities [Member]
Investment [Line Items]
Available-for-Sale, Cost or Amortized Cost	7,499
Available-for-Sale, Gross Unrealized Gains	302	33
Available-for-Sale, Fair Value	$ 7,801	$ 33

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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	Sep. 30, 2017	Dec. 31, 2016
Investment [Line Items]
Within one year, Amortized Cost	$ 113,488
After one year through five years, Amortized Cost	239,333
After five years through ten years, Amortized Cost	98,935
After ten years, Amortized Cost	134,328
Held-to-maturity, Amortized Cost, Totals	598,658	$ 562,434
Within one year, Fair Value	113,988
After one year through five years, Fair Value	243,851
After five years through ten years, Fair Value	101,450
After ten years, Fair Value	137,424
Held-to-maturity, Fair Value, Totals	610,151	$ 568,931
U.S. Agency-Based Mortgage-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost	10,928
Held-to-maturity, Fair Value	11,676
Asset-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity, Amortized Cost	1,646
Held-to-maturity, Fair Value	$ 1,762

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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	Sep. 30, 2017	Dec. 31, 2016
Investment [Line Items]
Within one year, Amortized Cost	$ 85,898
After one year through five years, Amortized Cost	160,278
After five years through ten years, Amortized Cost	32,117
After ten years, Amortized Cost	171,191
Total , Amortized Cost	462,892	$ 479,871
Within one year, Fair Value	86,051
After one year through five years, Fair Value	161,077
After five years through ten years, Fair Value	32,427
After ten years, Fair Value	175,033
Total, Fair Value	467,256	$ 479,097
U.S. Agency-Based Mortgage-Backed Securities [Member]
Investment [Line Items]
Available-for-sale securities, Amortized Cost	13,408
Available-for-sale securities, Fair value	$ 12,668

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Investments - Investment Securities Continuous Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Investment [Line Items]
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Less Than 12 Months	$ 134,588	$ 206,129
Held-to-maturity securities, Gross Unrealized Losses, Less Than 12 Months	435	3,283
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	30,699	7,465
Held-to-maturity securities, Gross Unrealized Losses, 12 Months or Greater	442	122
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	165,287	213,594
Held-to-maturity securities, Gross Unrealized Losses, Total	877	3,405
Available-for Sale, Fair value of Investments with Unrealized Losses, Less Than 12 Months	88,271	173,573
Available-for Sale, Gross Unrealized Losses, Less Than 12 Months	705	4,113
Available-for Sale, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	38,557	16,052
Available-for Sale, Gross Unrealized Losses, 12 Months or Greater	1,938	1,454
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total	126,828	189,625
Available-for Sale, Gross Unrealized Losses, Total	2,643	5,567
Fair Value of Investments with Unrealized Losses, Less Than 12 months	222,859	379,702
Gross Unrealized Loss, Less Than 12 Months	1,140	7,396
Fair Value of Investments with Unrealized Losses, 12 Months or Greater	69,256	23,517
Gross Unrealized Losses, 12 Months or Greater	2,380	1,576
Fair Value of Investments with Unrealized Losses, Total	292,115	403,219
Gross Unrealized Losses, Total	3,520	8,972
States and Political Subdivisions [Member]
Investment [Line Items]
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Less Than 12 Months	61,279	157,507
Held-to-maturity securities, Gross Unrealized Losses, Less Than 12 Months	205	3,014
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	22,658
Held-to-maturity securities, Gross Unrealized Losses, 12 Months or Greater	368
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	83,937	157,507
Held-to-maturity securities, Gross Unrealized Losses, Total	573	3,014
Available-for Sale, Fair value of Investments with Unrealized Losses, Less Than 12 Months	16,373	73,505
Available-for Sale, Gross Unrealized Losses, Less Than 12 Months	101	2,976
Available-for Sale, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	26,213	4,523
Available-for Sale, Gross Unrealized Losses, 12 Months or Greater	1,142	239
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total	42,586	78,028
Available-for Sale, Gross Unrealized Losses, Total	1,243	3,215
Corporate Bonds [Member]
Investment [Line Items]
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Less Than 12 Months	46,074	44,654
Held-to-maturity securities, Gross Unrealized Losses, Less Than 12 Months	183	202
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	3,041	6,292
Held-to-maturity securities, Gross Unrealized Losses, 12 Months or Greater	9	63
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	49,115	50,946
Held-to-maturity securities, Gross Unrealized Losses, Total	192	265
Available-for Sale, Fair value of Investments with Unrealized Losses, Less Than 12 Months	15,357	41,419
Available-for Sale, Gross Unrealized Losses, Less Than 12 Months	35	111
Available-for Sale, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	4,845	7,922
Available-for Sale, Gross Unrealized Losses, 12 Months or Greater	19	160
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total	20,202	49,341
Available-for Sale, Gross Unrealized Losses, Total	54	271
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	2,993
Held-to-maturity securities, Gross Unrealized Losses, Less Than 12 Months	2
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	2,993
Held-to-maturity securities, Gross Unrealized Losses, Total	2
Available-for Sale, Fair value of Investments with Unrealized Losses, Less Than 12 Months	5,359	3,702
Available-for Sale, Gross Unrealized Losses, Less Than 12 Months	19	48
Available-for Sale, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	3,497	3,607
Available-for Sale, Gross Unrealized Losses, 12 Months or Greater	729	1,055
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total	8,856	7,309
Available-for Sale, Gross Unrealized Losses, Total	748	1,103
Asset-Backed Securities [Member]
Investment [Line Items]
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	1,023	1,173
Held-to-maturity securities, Gross Unrealized Losses, 12 Months or Greater	16	59
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	1,023	1,173
Held-to-maturity securities, Gross Unrealized Losses, Total	16	59
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	24,242	3,968
Held-to-maturity securities, Gross Unrealized Losses, Less Than 12 Months	45	67
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	3,977
Held-to-maturity securities, Gross Unrealized Losses, 12 Months or Greater	49
Held-to-maturity securities, Fair Value of Investments with Unrealized Losses, Total	28,219	3,968
Held-to-maturity securities, Gross Unrealized Losses, Total	94	67
Available-for Sale, Fair value of Investments with Unrealized Losses, Less Than 12 Months	51,182	54,947
Available-for Sale, Gross Unrealized Losses, Less Than 12 Months	550	978
Available-for Sale, Fair Value of Investments with Unrealized Losses, 12 Months or Greater	4,002
Available-for Sale, Gross Unrealized Losses, 12 Months or Greater	48
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total	55,184	54,947
Available-for Sale, Gross Unrealized Losses, Total	$ 598	$ 978

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Investments - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) Security	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Security	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Investments Schedule [Abstract]
Individual fixed maturity held in unrealized loss position | Security	169		169
Individual fixed maturity held in unrealized loss position longer than 12 months | Security	48		48
Carrying value of investments	$ 1,280,000		$ 1,280,000		$ 13,330,000
Impairment losses recognized			0	$ 0
Net realized gains (losses) on investments	$ (192,000)	$ 181,000	$ (761,000)	$ 974,000

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Income Taxes - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 0
Company recognized uncertain tax positions	$ 0	$ 0

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Loss Reserves - Liability for Unpaid Claims and Claim Adjustment Expenses, Net of Related Amounts Recoverable from Reinsurers (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Roll Forward In Liability For Unpaid Claims And Claims Adjustment Expense [Abstract]
Balance, beginning of period	$ 742,776	$ 718,033
Less amounts recoverable from reinsurers on unpaid loss and loss adjustment expenses	78,256	64,858
Net balance, beginning of period	664,520	653,175
Add incurred related to:
Current accident year	178,562	187,819
Prior accident years	(27,524)	(41,406)
Total incurred	151,038	146,413
Less paid related to:
Current accident year	31,749	31,209
Prior accident years	108,284	108,485
Total paid	140,033	139,694
Net balance, end of period	675,525	659,894
Add amounts recoverable from reinsurers on unpaid loss and loss adjustment expenses	79,501	76,382
Balance, end of period	$ 755,026	$ 736,276

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Loss Reserves - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Insurance [Abstract]
Loss and LAE Related to Prior Periods	$ 27,524	$ 41,406

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Comprehensive Income and Accumulated Other Comprehensive Income - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Comprehensive income	$ 17,194	$ 16,183	$ 49,107	$ 62,801
Comprehensive income tax rate			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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance			$ 456,150
Ending Balance	$ 494,945		494,945
Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	2,416	$ 8,309	(492)	$ 2,587
Other comprehensive income (loss) before reclassification	820	(1,589)	4,032	4,286
Amounts reclassified from accumulated other comprehensive income	(203)	(124)	(507)	(277)
Net current period other comprehensive income (loss)	617	(1,713)	3,525	4,009
Ending Balance	$ 3,033	$ 6,596	$ 3,033	$ 6,596

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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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	$ 23,556	$ 26,027	$ 64,440	$ 85,037
Income tax expense	(6,979)	(8,131)	(18,858)	(26,245)
Net income	16,577	17,896	45,582	58,792
Changes in Net Unrealized Gains (Losses) on Investment Securities [Member] | Reclassification Out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Unrealized gains on available-for-sale securities	312	191	780	426
Income before income taxes	312	191	780	426
Income tax expense	(109)	(67)	(273)	(149)
Net income	$ 203	$ 124	$ 507	$ 277

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Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	$ 476,337	$ 492,460
Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	7,801	33
Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	475,057	479,130
Fair Value, Measurements, Recurring [Member] | Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	467,256	479,097
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	68,753	54,980
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	60,952	54,947
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	406,304	424,150
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	406,304	424,150
Fair Value, Measurements, Recurring [Member] | Common Stock [Member] | Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	7,801	33
Fair Value, Measurements, Recurring [Member] | Common Stock [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	7,801	33
Fair Value, Measurements, Recurring [Member] | States and Political Subdivisions [Member] | Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	241,652	232,293
Fair Value, Measurements, Recurring [Member] | States and Political Subdivisions [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	241,652	232,293
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member] | Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	151,984	182,515
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	151,984	182,515
Fair Value, Measurements, Recurring [Member] | U.S. Agency-Based Mortgage-Backed Securities [Member] | Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	12,668	9,342
Fair Value, Measurements, Recurring [Member] | U.S. Agency-Based Mortgage-Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	12,668	9,342
Fair Value, Measurements, Recurring [Member] | U.S. Treasury Securities [Member] | Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	60,952	54,947
Fair Value, Measurements, Recurring [Member] | U.S. Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-Sale, Fair Value	$ 60,952	$ 54,947

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Fair Value Measurements - Schedule of Assets and Liabilities Measured at Amortized Cost (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	$ 610,151	$ 568,931
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	440,245	399,483
Corporate Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	122,248	144,016
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	11,676	10,915
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	6,785	6,779
US Government-sponsored Enterprises Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	27,435	5,637
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	1,762	2,031
Commercial 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		70
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	6,785	6,779
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	6,785	6,779
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	603,366	562,152
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	440,245	399,483
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	122,248	144,016
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	11,676	10,915
Fair Value, Inputs, Level 2 [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held-to-maturity-fixed maturity, Fair Value	27,435	5,637
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	$ 1,762	2,031
Fair Value, Inputs, Level 2 [Member] | Commercial 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		$ 70

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Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities held to maturity, carrying value	$ 598,658	$ 562,434
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	300
Securities held to maturity, carrying value	300
Securities held to maturity, fair value	$ 400

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Fair Value Measurements - Summary of Carrying Values and Corresponding Fair Values for Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturity securities-held-to-maturity	$ 610,151	$ 568,931
Securities held to maturity, carrying value	598,658	562,434
Fixed maturity securities-available-for-sale	467,256	479,097
Equity securities	7,801	33
Short-term investments	69,526	29,580
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturity securities-held-to-maturity	610,151	568,931
Fixed maturity securities-available-for-sale	467,256	479,097
Equity securities	7,801	33
Short-term investments	69,526	29,580
Other investments	1,280	13,330
Cash and cash equivalents	80,378	58,936
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity, carrying value	598,658	562,434
Fixed maturity securities-available-for-sale	467,256	479,097
Equity securities	7,801	33
Short-term investments	69,526	29,580
Other investments	1,280	13,330
Cash and cash equivalents	$ 80,378	$ 58,936

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Treasury Stock - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Oct. 25, 2016
Equity [Abstract]
Share repurchase program, new limit amount			$ 25,000,000
Shares repurchased under the program	0
Shares repurchased	1,258,250	1,258,250
Shares repurchased, value	$ 22,400,000
Shares repurchased, average price	$ 17.78

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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions		1 Months Ended	9 Months Ended
	Jul. 24, 2017	Feb. 28, 2015	Sep. 30, 2017
Loss Contingencies [Line Items]
Retention amount			$ 5.0
AIIC [Member]
Loss Contingencies [Line Items]
Appeal bond returned amount	$ 27.8
AIIC [Member] | Iowa [Member]
Loss Contingencies [Line Items]
Appeal bond			27.8
AIIC [Member] | 2009 Workers' Compensation Claim [Member] | Iowa [Member]
Loss Contingencies [Line Items]
Workers compensation claim, damages awarded		$ 25.3
Workers compensation claims contingency reserves			2.3
Total amount expensed on workers compensation claim			$ 5.4
AIIC [Member] | Plaintiff Seeking Actual Damages [Member] | Iowa [Member]
Loss Contingencies [Line Items]
Amount of damages		0.3
AIIC [Member] | Plaintiff Seeking Punitive Damages [Member] | Iowa [Member]
Loss Contingencies [Line Items]
Amount of damages		$ 25.0

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Subsequent Events - Additional Information (Detail) - Subsequent Event [Member]	Oct. 23, 2017 $ / shares
Dividend Declared [Member]
Subsequent Event [Line Items]
Cash dividend per share	$ 0.20
Date of payment to shareholders entitled to dividends	Dec. 28, 2017
Date of record of shareholders entitled to dividends	Dec. 14, 2017
Extraordinary Dividend Declared [Member]
Subsequent Event [Line Items]
Cash dividend per share	$ 3.50
Date of payment to shareholders entitled to dividends	Dec. 28, 2017
Date of record of shareholders entitled to dividends	Dec. 14, 2017