Infinity Property & Casualty (IPCC) 10-Q 3 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 28, 2017
Document Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Entity Registrant Name	INFINITY PROPERTY & CASUALTY CORP
Entity Central Index Key	1,195,933
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		11,037,459

Consolidated Statements Of Earn

Consolidated Statements Of Earnings - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Earned premium	$ 339,147	$ 340,715	$ 680,516	$ 676,899
Percent change, Earned premium	(0.50%)		0.50%
Installment and other fee income	$ 26,461	25,385	$ 53,410	50,903
Percent change, Installment and other fee income	4.20%		4.90%
Net investment income	$ 9,001	8,927	$ 17,696	16,990
Percent change, Net investment Income	0.80%		4.20%
Total net realized gains (losses) on investments	$ 1,886	(164)	$ 2,396	(25)
Other income	$ 391	220	$ 666	478
Percent change, Other income	77.30%		39.20%
Total revenues	$ 376,886	375,084	$ 754,683	745,246
Percent change, Total revenues	0.50%		1.30%
Costs and Expenses:
Losses and loss adjustment expenses	$ 273,621	263,514	$ 544,296	528,798
Percent change, Losses and loss adjustment expenses	3.80%		2.90%
Commissions and other underwriting expenses	$ 90,241	89,164	$ 176,180	177,771
Percent change, Commissions and other underwriting expenses	1.20%		(0.90%)
Interest expense	$ 3,511	3,508	$ 7,023	7,017
Percent change, Interest expense	0.10%		0.10%
Corporate general and administrative expenses	$ 2,447	2,060	$ 4,718	3,764
Percent change, Corporate general and administrative expenses	18.80%		25.40%
Other expenses	$ 507	797	$ 829	1,080
Percent change, Other expenses	(36.40%)		(23.20%)
Total costs and expenses	$ 370,327	359,043	$ 733,046	718,429
Percent change, Total costs and expenses	3.10%		2.00%
Earnings before income taxes	$ 6,559	16,040	$ 21,637	26,816
Percent change, Earnings before income taxes	(59.10%)		(19.30%)
Provision for income taxes	$ 1,513	5,026	$ 5,945	8,094
Percent change, Provision for income taxes	(69.90%)		(26.50%)
Net Earnings	$ 5,046	$ 11,015	$ 15,692	$ 18,723
Percent change, Net Earnings	(54.20%)		(16.20%)
Net Earnings per Common Share:
Basic (usd per share)	$ 0.46	$ 1	$ 1.43	$ 1.70
Percent change, Basic	(54.00%)		(15.90%)
Diluted (usd per share)	$ 0.46	$ 0.99	$ 1.41	$ 1.68
Percent change, Diluted	(53.50%)		(16.10%)
Average Number of Common Shares:
Basic (shares)	11,006	11,012	11,002	11,024
Percent change, Basic	(0.10%)		(0.20%)
Diluted (shares)	11,082	11,096	11,105	11,115
Percent change, Diluted	(0.10%)		(0.10%)
Cash Dividends per Common Share (usd per share)	$ 0.58	$ 0.52	$ 1.16	$ 1.04
Percent change, Cash Dividends per Common Share	11.50%		11.50%
Net realized gains on sales	$ 1,886	$ 34	$ 2,406	$ 291
Percent change, Net realized gains on sales			726.30%
Total other-than-temporary impairment (OTTI) losses	0	(198)	$ (46)	(316)
Percent change, Total other-than-temporary impairment (OTTI) losses			(85.60%)
Non-credit portion in other comprehensive income	$ 0	0	$ (36)	0
Non-Credit Portion In Other Comprehensive Income Percentage Change	0.00%
Net impairment losses recognized in earnings	$ 0	198	10	316
Total net realized gains (losses) on investments	$ 1,886	$ (164)	$ 2,396	$ (25)
increase Decrease Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Available For Sale Securities			(96.90%)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 5,046	$ 11,015	$ 15,692	$ 18,723
Other comprehensive income before tax:
Net change in post-retirement benefit liability	(13)	(11)	(25)	(22)
Unrealized gains on investments:
Unrealized holding gains arising during the period	9,055	10,828	19,720	26,287
Less: Reclassification adjustments for (gains) losses included in net earnings	(1,886)	164	(2,396)	25
Unrealized gains on investments, net	7,169	10,992	17,324	26,311
Other comprehensive income, before tax	7,156	10,981	17,299	26,290
Income tax expense related to components of other comprehensive income	(2,505)	(3,843)	(6,055)	(9,201)
Other comprehensive income, net of tax	4,652	7,137	11,244	17,088
Comprehensive income	$ 9,698	$ 18,152	$ 26,937	$ 35,811

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Investments:
Fixed maturities – at fair value (amortized cost $1,431,815 and $1,392,660)	$ 1,439,034	$ 1,390,167
Equity securities – at fair value (cost $74,270 and $77,013)	95,508	90,640
Short-term investments – at fair value (amortized cost $425 and $2,909)	425	2,907
Total investments	1,534,967	1,483,714
Cash and cash equivalents	87,608	92,800
Accrued investment income	13,471	12,485
Agents’ balances and premium receivable, net of allowances for doubtful accounts of $13,216 and $14,207	498,055	495,157
Property and equipment, net of accumulated depreciation of $77,591 and $70,559	87,507	96,166
Prepaid reinsurance premium	3,186	3,410
Recoverables from reinsurers (includes $439 and $121 on paid losses and LAE)	17,864	17,251
Deferred policy acquisition costs	90,403	91,136
Current and deferred income taxes	22,536	21,635
Receivable for securities sold	0	795
Other assets	20,523	12,777
Goodwill	75,275	75,275
Total assets	2,451,396	2,402,601
Liabilities:
Unpaid losses and loss adjustment expenses	701,097	685,455
Unearned premium	623,466	614,347
Long-term debt (fair value $294,132 and $278,726)	273,699	273,591
Commissions payable	13,836	16,176
Payable for securities purchased	14,525	13,922
Other liabilities	112,648	99,924
Total liabilities	1,739,271	1,703,414
Commitments and contingencies (See Note 9)
Shareholders’ equity:
Common stock, no par value (50,000,000 shares authorized; 21,851,207 and 21,809,954 shares issued)	21,862	21,829
Additional paid-in capital	381,477	378,745
Retained earnings	780,575	777,695
Accumulated other comprehensive income, net of tax	19,152	7,907
Treasury stock, at cost (10,807,816 and 10,766,211 shares)	(490,941)	(486,990)
Total shareholders’ equity	712,125	699,187
Total liabilities and shareholders’ equity	$ 2,451,396	$ 2,402,601

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Fixed maturities, amortized cost	$ 1,431,815	$ 1,392,660
Equity securities, cost	74,270	77,013
Short term investments, amortized cost	425	2,909
Agents' balances and premium receivable, allowance for doubtful accounts	13,216	14,207
Property and equipment, accumulated depreciation	77,591	70,559
Recoverable from reinsurers, paid losses and loss adjustment expenses	439	121
Long-term debt, fair value	$ 294,132	$ 278,726
Common stock, par value (usd per share)	$ 0	$ 0
Common stock, shares authorized (shares)	50,000,000	50,000,000
Common stock, shares issued (shares)	21,851,207	21,809,954
Treasury stock, shares (shares)	10,807,816	10,766,211

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income, Net of Tax	Treasury Stock
Beginning Balance at Dec. 31, 2015	$ 687,595	$ 21,794	$ 376,025	$ 757,604	$ 7,811	$ (475,638)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	18,723			18,723
Net change in post-retirement benefit liability	(14)				(14)
Change in unrealized gain on investments	16,960				16,960
Change in non-credit component of impairment losses on fixed maturities	142				142
Comprehensive income	35,811
Dividends paid to common shareholders	(11,497)			(11,497)
Shares issued and share-based compensation expense, including tax benefit	633	7	627
Acquisition of treasury stock	(9,486)					(9,486)
Ending Balance at Jun. 30, 2016	703,057	21,801	376,652	764,829	24,899	(485,124)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	24,362			24,362
Net change in post-retirement benefit liability	71				71
Change in unrealized gain on investments	(17,198)				(17,198)
Change in non-credit component of impairment losses on fixed maturities	135				135
Comprehensive income	7,371
Dividends paid to common shareholders	(11,496)			(11,496)
Shares issued and share-based compensation expense, including tax benefit	2,122	29	2,093
Acquisition of treasury stock	(1,866)					(1,866)
Ending Balance at Dec. 31, 2016	699,187	21,829	378,745	777,695	7,907	(486,990)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	15,692			15,692
Net change in post-retirement benefit liability	(16)				(16)
Change in unrealized gain on investments	11,179				11,179
Change in non-credit component of impairment losses on fixed maturities	82				82
Comprehensive income	26,937
Dividends paid to common shareholders	(12,813)			(12,813)
Shares issued and share-based compensation expense, including tax benefit	2,765	33	2,732
Acquisition of treasury stock	(3,951)					(3,951)
Ending Balance at Jun. 30, 2017	$ 712,125	$ 21,862	$ 381,477	$ 780,575	$ 19,152	$ (490,941)

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating Activities:
Net earnings	$ 5,046	$ 11,015	$ 15,692	$ 18,723
Adjustments:
Depreciation	4,120	3,438	8,296	6,521
Amortization	5,695	5,037	11,023	10,839
Net realized (gains) losses on investments	(1,886)	164	(2,396)	25
(Gain) loss on disposal of property and equipment	(5)	399	(8)	401
Share-based compensation expense	1,238	28	2,622	351
Excess tax benefits from share-based payment arrangements	0	(157)	0	(157)
Activity related to rabbi trust	59	48	128	66
Change in accrued investment income	(1,233)	(314)	(986)	509
Change in agents’ balances and premium receivable	14,207	6,044	(2,898)	(25,016)
Change in reinsurance receivables	(1,307)	1,663	(389)	(2,067)
Change in deferred policy acquisition costs	3,690	1,392	733	(2,664)
Change in other assets	(8,789)	6,433	(13,220)	3,303
Change in unpaid losses and loss adjustment expenses	22,151	(7,265)	15,643	(3,755)
Change in unearned premium	(17,825)	(7,103)	9,118	28,747
Change in other liabilities	4,980	295	10,321	(3,745)
Net cash provided by operating activities	30,141	21,431	53,679	32,396
Investing Activities:
Purchases of fixed maturities	(155,009)	(103,611)	(275,840)	(261,498)
Purchases of equity securities			(1,900)	0
Purchases of short-term investments	425	5,140	425	5,140
Purchases of property and equipment	(695)	(10,450)	(1,584)	(15,395)
Maturities and redemptions of fixed maturities	65,159	36,847	108,478	76,145
Maturities and redemptions of short-term investments	500	0	500	0
Proceeds from sale of fixed maturities	81,487	99,180	119,158	203,115
Proceeds from sale of equity securities	5,000	0	7,002	0
Proceeds from sale of short-term investments	0	1,064	2,400	5,666
Proceeds from sale of property and equipment	6	2	25	2
Net cash (used in) provided by investing activities	(3,978)	17,892	(42,187)	2,896
Financing Activities:
Proceeds from stock options exercised and employee stock purchases	78	68	143	126
Principal payments under capital lease obligations	(134)	(129)	(269)	(249)
Acquisition of treasury stock	(1,450)	(1,116)	(3,746)	(10,137)
Dividends paid to shareholders	(6,411)	(5,753)	(12,813)	(11,497)
Net cash used in financing activities	(7,916)	(6,930)	(16,684)	(21,759)
Net (decrease) increase in cash and cash equivalents	18,247	32,393	(5,192)	13,533
Cash and cash equivalents at beginning of period	69,361	43,623	92,800	62,483
Cash and cash equivalents at end of period	$ 87,608	$ 76,016	$ 87,608	$ 76,016

Significant Reporting And Accou

Significant Reporting And Accounting Policies	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Significant Reporting And Accounting Policies	Significant Reporting and Accounting Policies Nature of Operations We are a holding company that provides insurance through our subsidiaries for personal auto with a concentration on nonstandard risks, commercial auto and classic collectors. Although licensed to write insurance in all 50 states and the District of Columbia, we focus on select states that we believe offer the greatest opportunity for premium growth and profitability. Basis of Consolidation and Reporting The accompanying consolidated financial statements are unaudited and should be read in conjunction with our Annual Report on Form 10-K (Form 10-K) for the year ended December 31, 2016 . This Quarterly Report on Form 10-Q, including the Condensed Notes to Consolidated Financial Statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations, focuses on our financial performance since the beginning of the year. These financial statements reflect certain adjustments necessary for a fair presentation of our results of operations and financial position. Such adjustments consist of normal, recurring accruals recorded to accurately match expenses with their related revenue streams and the elimination of all significant intercompany transactions and balances. We have evaluated events that occurred after June 30, 2017 , for recognition or disclosure in our financial statements and the notes to the financial statements. Schedules may not foot due to rounding. Estimates We based certain accounts and balances within these financial statements upon our estimates and assumptions. The amount of reserves for claims not yet paid, for example, is an item that we can only record by estimation. Unrealized capital gains and losses on investments are subject to market fluctuations, and we use judgment in the determination of whether unrealized losses on certain securities are temporary or other-than-temporary. Should actual results differ significantly from these estimates, the effect on our results of operations could be material. The results of operations for the periods presented may not be indicative of our results for the entire year. Recently Adopted Accounting Standards In March 2016 the FASB issued an ASU related to the accounting for employee share-based payments. The guidance addresses the recognition, presentation and classification of awards, forfeitures and shares withheld for tax purposes. We adopted the change to the presentation of excess tax benefits on the consolidated statements of cash flow retrospectively and all other portions of the standard prospectively as of January 1, 2017. We reclassified $0.2 million of excess tax benefits from financing activities to operating activities for both the three and six months ended June 30, 2016, respectively. The adoption of this standard did not have a material impact on our financial condition or results of operations. Recently Issued Accounting Standards In March 2017 the FASB issued an ASU related to the amortization of premium on purchased callable debt securities. The guidance amends the amortization period for certain purchased callable debt securities held at a premium. Securities that contain explicit, noncontingent call features that are callable at fixed prices and on preset dates should shorten the amortization period for the premium to the earliest call date (and if the call option is not exercised, the effective yield is reset using the payment terms of the debt security). The standard is effective for fiscal years, and interim period within those years, beginning after December 15, 2018, and is to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations. In October 2016 the FASB issued an ASU related to the recognition of income tax on intra-entity transfers of assets other than inventory. The guidance requires the income tax to be recognized when the transfer occurs rather than when the asset is sold to an outside party. The standard is effective for annual periods beginning after December 15, 2017, and interim periods within the year of adoption, and is to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations. In June 2016 the FASB issued an ASU related to the accounting for credit losses. The guidance generally requires credit losses on available-for-sale debt securities to be recognized as an allowance rather than as a reduction to the amortized cost of a security. The standard is effective for fiscal periods beginning after December 15, 2019, and interim periods within the year of adoption, with prospective application of the ASU required for debt securities for which an other-than-temporary impairment has been recognized before the implementation date. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations. In February 2016 the FASB issued an ASU related to the accounting for leases. The guidance requires lessees to recognize lease assets and liabilities on the balance sheet. The standard is effective for fiscal years beginning after December 15, 2018, and is to be applied retrospectively, with an option to use a modified retrospective approach for leases which commenced prior to the effective date of this ASU. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations. In January 2016 the FASB issued an ASU amending the guidance on classifying and measuring financial instruments. The guidance requires equity securities to be measured at fair value and changes in that fair value to be recognized through net income. The standard is effective for fiscal years beginning after December 15, 2017, with a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. We currently record equity securities at fair value and as of June 30, 2017 , we have $13.8 million net unrealized gains , net of tax, recognized as a component of other comprehensive income. In May 2014 the FASB issued an ASU related to the accounting for revenue from contracts with customers. Insurance contracts have been excluded from the scope of the guidance. In August 2015 the FASB issued an ASU to defer the effective date from fiscal years beginning after December 15, 2016, to fiscal years beginning after December 15, 2017. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations. As an insurance-entity, we are largely exempt from the provisions of this standard, with only fee income totaling $107.4 million for the year ended December 31, 2016, subject to this new standard.

Computation Of Earnings Per Sha

Computation Of Earnings Per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Computation of Net Earnings per Share	Computation of Net Earnings per Share The following table illustrates our computations of basic and diluted net earnings per common share ($ in thousands, except per share figures): Three months ended June 30, Six months ended June 30, 2017 2016 2017 2016 Net earnings $ 5,046 $ 11,015 $ 15,692 $ 18,723 Average basic shares outstanding 11,006 11,012 11,002 11,024 Basic net earnings per share $ 0.46 $ 1.00 $ 1.43 $ 1.70 Average basic shares outstanding 11,006 11,012 11,002 11,024 Restricted stock not vested 36 24 34 22 Dilutive effect of Performance Share Plan 41 60 68 69 Average diluted shares outstanding 11,082 11,096 11,105 11,115 Diluted net earnings per share $ 0.46 $ 0.99 $ 1.41 $ 1.68

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Fair values of instruments are based on: (i) quoted prices in active markets for identical assets (Level 1); (ii) quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations in which all significant inputs are observable in active markets (Level 2); or (iii) valuations derived from valuation techniques in which one or more significant inputs are unobservable in the marketplace (Level 3). The following tables present, for each of the fair value hierarchy levels, our assets and liabilities for which we report fair value on a recurring basis ($ in thousands): Fair Value June 30, 2017 Level 1 Level 2 Level 3 Total Cash and cash equivalents $ 87,608 $ 0 $ 0 $ 87,608 Fixed maturity securities: U.S. government 64,025 0 0 64,025 State and municipal 0 498,709 3,447 502,156 Mortgage-backed securities: Residential 0 351,766 0 351,766 Commercial 0 42,060 0 42,060 Total mortgage-backed securities 0 393,826 0 393,826 Asset-backed securities 0 51,527 249 51,775 Corporates 0 427,038 215 427,252 Total fixed maturities 64,025 1,371,099 3,910 1,439,034 Equity securities 95,508 0 0 95,508 Short-term investments 0 425 0 425 Total cash and investments $ 247,141 $ 1,371,524 $ 3,910 $ 1,622,575 Percentage of total cash and investments 15.2 % 84.5 % 0.2 % 100.0 % December 31, 2016 Cash and cash equivalents $ 92,800 $ 0 $ 0 $ 92,800 Fixed maturity securities: U.S. government 62,480 5 0 62,485 State and municipal 0 472,471 3,860 476,331 Mortgage-backed securities: Residential 0 340,367 0 340,367 Commercial 0 69,801 0 69,801 Total mortgage-backed securities 0 410,169 0 410,169 Asset-backed securities 0 37,196 412 37,608 Corporates 0 402,909 666 403,575 Total fixed maturities 62,480 1,322,749 4,938 1,390,167 Equity securities 90,640 0 0 90,640 Short-term investments 769 2,139 0 2,907 Total cash and investments $ 246,689 $ 1,324,888 $ 4,938 $ 1,576,514 Percentage of total cash and investments 15.6 % 84.0 % 0.3 % 100.0 % We do not report our long-term debt at fair value in the Consolidated Balance Sheets. The $294.1 million and $278.7 million fair value of our long-term debt at June 30, 2017 , and December 31, 2016 , respectively, would be included in Level 2 of the fair value hierarchy if it were reported at fair value. Level 1 includes cash and cash equivalents, U.S. Treasury securities, an exchange-traded fund and equities held in a rabbi trust which funds our Supplemental Employee Retirement Plan (SERP). Level 2 includes securities whose fair value was determined using observable market inputs. Level 3 securities are comprised of (i) securities for which there is no active or inactive market for similar instruments; (ii) securities whose fair value is determined based on unobservable inputs; and (iii) securities, other than those backed by the U.S. Government, that are not rated by a nationally recognized statistical rating organization (NRSRO). We recognize transfers between levels at the beginning of the reporting period. A third party nationally recognized pricing service provides the fair value of securities in Level 2. A summary of the significant valuation techniques and market inputs for each class of security follows: U.S. Government : In determining the fair value for U.S. Government securities we use the market approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data and industry and economic events. State and municipal : In determining the fair value for state and municipal securities we use the market approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data and industry and economic events. Mortgage-backed securities : In determining the fair value for mortgage-backed securities we use the market approach and to a lesser extent the income approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data, industry and economic events and monthly payment information. Asset-backed securities : In determining the fair value for asset-backed securities we use the market approach and to a lesser extent the income approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads, reference data, industry and economic events, monthly payment information and collateral performance. Corporate : In determining the fair value for corporate securities we use the market approach. The primary inputs to the valuation include reported trades, dealer quotes for identical or similar assets in markets that are not active, benchmark yields, credit spreads (for investment grade securities), observations of equity and credit default swap curves (for high-yield corporates), reference data and industry and economic events. We review the third party pricing methodologies quarterly and test for significant differences between the market price used to value the security and recent sales activity. The following tables present the progression in the Level 3 fair value category ($ in thousands): Three months ended June 30, 2017 State and Municipal Asset-Backed Securities Corporates Total Balance at beginning of period $ 3,479 $ 4,584 $ 2,553 $ 10,616 Total (losses) gains, unrealized or realized Included in net earnings (29 ) 0 0 (29 ) Included in other comprehensive income (3 ) 1 (4 ) (6 ) Settlements 0 (76 ) (335 ) (411 ) Transfers out 0 (4,259 ) (2,000 ) (6,259 ) Balance at end of period $ 3,447 $ 249 $ 215 $ 3,910 Three months ended June 30, 2016 Balance at beginning of period $ 0 $ 1,338 $ 1,442 $ 2,781 Total (losses) gains, unrealized or realized Included in net earnings (4 ) 0 4 (0 ) Included in other comprehensive income 1 1 (26 ) (24 ) Purchases 0 620 0 620 Settlements 0 0 (312 ) (312 ) Transfers in 628 0 0 628 Balance at end of period $ 626 $ 1,959 $ 1,107 $ 3,692 Six months ended June 30, 2017 State and Municipal Asset-Backed Securities Corporates Total Balance at beginning of period $ 3,860 $ 412 $ 666 $ 4,938 Total (losses) gains, unrealized or realized Included in net earnings (60 ) 0 2 (59 ) Included in other comprehensive income 12 1 (26 ) (12 ) Purchases 0 4,259 2,000 6,259 Sales (694 ) 0 0 (694 ) Settlements 0 (165 ) (427 ) (591 ) Transfers in 329 0 0 329 Transfers out 0 (4,259 ) (2,000 ) (6,259 ) Balance at end of period $ 3,447 $ 249 $ 215 $ 3,910 Six months ended June 30, 2016 Balance at beginning of period $ 10 $ 0 $ 1,524 $ 1,534 Total losses, unrealized or realized Included in net earnings (4 ) 0 7 3 Included in other comprehensive income 1 1 (25 ) (23 ) Purchases 0 620 0 620 Sales 0 0 0 0 Settlements (10 ) 0 (398 ) (408 ) Transfers in 628 1,338 0 1,966 Transfers out 0 0 0 0 Balance at end of period $ 626 $ 1,959 $ 1,107 $ 3,692 Of the $3.9 million fair value of securities in Level 3 at June 30, 2017 , which consisted of five securities, we priced two based on non-binding broker quotes and three securities, which were included in Level 3 because they were not rated by a nationally recognized statistical rating organization, were priced by a nationally recognized pricing service. During the six months ended June 30, 2017, one security, which was an exchange of a rated municipal bond for an unrated refunded bond, was transferred from Level 2 into Level 3 . There were no transfers of securities between Levels 1 and 2. The gains or losses included in net earnings are included in the line item "Net realized gains (losses) on investments" in the Consolidated Statements of Earnings. We recognize the net gains or losses included in other comprehensive income in the line item " Unrealized gains on investments, net " in the Consolidated Statements of Comprehensive Income and the line item "Change in unrealized gain on investments" or the line item "Change in non-credit component of impairment losses on fixed maturities" in the Consolidated Statements of Changes in Shareholders’ Equity. The following table presents the carrying value and estimated fair value of our financial instruments ($ in thousands): June 30, 2017 December 31, 2016 Carrying Value Fair Value Carrying Value Fair Value Assets: Cash and cash equivalents $ 87,608 $ 87,608 $ 92,800 $ 92,800 Available-for-sale securities: Fixed maturities 1,439,034 1,439,034 1,390,167 1,390,167 Equity securities 95,508 95,508 90,640 90,640 Short-term investments 425 425 2,907 2,907 Total cash and investments $ 1,622,575 $ 1,622,575 $ 1,576,514 $ 1,576,514 Liabilities: Long-term debt $ 273,699 $ 294,132 $ 273,591 $ 278,726 Refer to Note 4 – Investments to the Consolidated Financial Statements for additional information on investments and Note 5 – Long-Term Debt to the Consolidated Financial Statements for additional information on long-term debt.

Investments

Investments	6 Months Ended
	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investments	Investments We consider all fixed maturity and equity securities to be available-for-sale and report them at fair value with the net unrealized gains or losses reported after-tax (net of any valuation allowance) as a component of other comprehensive income. The proceeds from sales of securities for the three and six months ended June 30, 2017 , were $86.5 million and $128.6 million respectively, while the proceeds from sales of securities for the three and six months ended June 30, 2016 , were $100.2 million and $208.8 million , respectively. There was no receivable for unsettled sales as of June 30, 2017, or June 30, 2016 . Gross gains of $2.3 million and gross losses of $0.4 million were realized on sales of available-for-sale securities during the three months ended June 30, 2017 , compared with gross gains of $0.9 million and gross losses of $0.9 million realized on sales during the three months ended June 30, 2016 . Gross gains of $3.0 million and gross losses of $0.6 million were realized on sales of available-for-sale securities during the six months ended June 30, 2017 , compared with gross gains of $2.2 million and gross losses of $1.9 million realized on sales during the six months ended June 30, 2016 . Gains or losses on securities are determined on a specific identification basis. Summarized information for the major categories of our investment portfolio follows ($ in thousands): June 30, 2017 Amortized Cost or Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI Recognized in Accumulated OCI (1) Fixed maturities: U.S. government $ 64,192 $ 66 $ (234 ) $ 64,025 $ 0 State and municipal 497,850 5,085 (778 ) 502,156 (47 ) Mortgage-backed securities: Residential 353,813 2,264 (4,311 ) 351,766 (1,856 ) Commercial 42,609 65 (614 ) 42,060 0 Total mortgage-backed securities 396,422 2,328 (4,924 ) 393,826 (1,856 ) Asset-backed securities 51,668 130 (22 ) 51,775 (8 ) Corporates 421,684 6,476 (908 ) 427,252 (31 ) Total fixed maturities 1,431,815 14,085 (6,866 ) 1,439,034 (1,942 ) Equity securities 74,270 21,238 0 95,508 0 Short-term investments 425 0 (0 ) 425 0 Total $ 1,506,511 $ 35,323 $ (6,866 ) $ 1,534,967 $ (1,942 ) December 31, 2016 Fixed maturities: U.S. government $ 62,808 $ 55 $ (377 ) $ 62,485 $ 0 State and municipal 477,834 2,313 (3,816 ) 476,331 (51 ) Mortgage-backed securities: Residential 343,095 2,306 (5,034 ) 340,367 (1,967 ) Commercial 70,676 63 (939 ) 69,801 0 Total mortgage-backed securities 413,772 2,369 (5,972 ) 410,169 (1,967 ) Asset-backed securities 37,562 93 (47 ) 37,608 (8 ) Corporates 400,685 4,389 (1,499 ) 403,575 (41 ) Total fixed maturities 1,392,660 9,219 (11,711 ) 1,390,167 (2,068 ) Equity securities 77,013 13,627 0 90,640 0 Short-term investments 2,909 0 (2 ) 2,907 0 Total $ 1,472,582 $ 22,846 $ (11,713 ) $ 1,483,714 $ (2,068 ) (1) The total non-credit portion of OTTI recognized in Accumulated OCI reflecting the original non-credit loss at the time the credit impairment was determined. The following tables set forth the amount of unrealized loss by investment category and length of time that individual securities have been in a continuous unrealized loss position ($ in thousands): Less than 12 Months 12 Months or More June 30, 2017 Number of Securities with Unrealized Losses Fair Value Gross Unrealized Losses Unrealized Losses as % of Cost Number of Securities with Unrealized Losses Fair Value Gross Unrealized Losses Unrealized Losses as % of Cost Fixed maturities: U.S. government 30 $ 48,093 $ (233 ) 0.5 % 1 $ 765 $ (1 ) 0.1 % State and municipal 81 157,706 (713 ) 0.4 % 1 3,743 (66 ) 1.7 % Mortgage-backed securities: Residential 382 220,947 (3,790 ) 1.7 % 46 13,071 (520 ) 3.8 % Commercial 11 28,392 (602 ) 2.1 % 3 5,027 (12 ) 0.2 % Total mortgage-backed securities 393 249,339 (4,392 ) 1.7 % 49 18,098 (532 ) 2.9 % Asset-backed securities 9 8,653 (17 ) 0.2 % 1 1,455 (5 ) 0.3 % Corporates 74 98,429 (756 ) 0.8 % 6 5,975 (152 ) 2.5 % Total fixed maturities 587 562,220 (6,111 ) 1.1 % 58 30,036 (755 ) 2.5 % Short-term investments 1 425 (0 ) 0.0 % 0 0 0 0.0 % Total 588 $ 562,645 $ (6,111 ) 1.1 % 58 $ 30,036 $ (755 ) 2.5 % December 31, 2016 Fixed maturities: U.S. government 31 $ 47,640 $ (377 ) 0.8 % 0 $ 0 $ 0 0.0 % State and municipal 146 303,428 (3,816 ) 1.2 % 0 0 0 0.0 % Mortgage-backed securities: Residential 381 225,117 (4,559 ) 2.0 % 40 11,891 (474 ) 3.8 % Commercial 14 38,002 (788 ) 2.0 % 7 26,537 (150 ) 0.6 % Total mortgage-backed securities 395 263,119 (5,347 ) 2.0 % 47 38,428 (625 ) 1.6 % Asset-backed securities 9 7,836 (46 ) 0.6 % 1 519 (1 ) 0.1 % Corporates 98 145,089 (1,272 ) 0.9 % 7 7,745 (227 ) 2.8 % Total fixed maturities 679 767,112 (10,859 ) 1.4 % 55 46,693 (852 ) 1.8 % Short-term investments 3 2,907 (2 ) 0.1 % 0 0 0 0.0 % Total 682 $ 770,019 $ (10,861 ) 1.4 % 55 $ 46,693 $ (852 ) 1.8 % The determination of whether unrealized losses are “other-than-temporary” requires judgment based on subjective as well as objective factors. Factors we considered and resources we used in our determination include: • whether the unrealized loss is credit-driven or a result of changes in market interest rates; • the length of time the security’s market value has been below its cost; • the extent to which fair value is less than cost basis; • the intent to sell the security; • whether it is more likely than not that there will be a requirement to sell the security before its anticipated recovery; • historical operating, balance sheet and cash flow data contained in issuer SEC filings; • issuer news releases; • near-term prospects for improvement in the issuer and/or its industry; • industry research and communications with industry specialists; and • third-party research and credit rating reports. We regularly evaluate for potential impairment each security position that has either of the following: a fair value of less than 95% of its book value or an unrealized loss that equals or exceeds $ 100,000 . The following table summarizes those securities, excluding the rabbi trust, with unrealized gains or losses: June 30, 2017 December 31, 2016 Number of positions held with unrealized: Gains 677 527 Losses 646 737 Number of positions held that individually exceed unrealized: Gains of $500,000 2 1 Losses of $500,000 0 0 Percentage of positions held with unrealized: Gains that were investment grade 86 % 85 % Losses that were investment grade 96 % 97 % Percentage of fair value held with unrealized: Gains that were investment grade 87 % 84 % Losses that were investment grade 96 % 97 % The following table sets forth the amount of unrealized losses, excluding the rabbi trust, by age and severity at June 30, 2017 ($ in thousands): Age of Unrealized Losses Fair Value of Securities with Unrealized Losses Total Gross Unrealized Losses Less Than 5%* 5% - 10%* Total Gross Greater Than 10%* Three months or less $ 203,738 $ (638 ) $ (638 ) $ 0 $ 0 Four months through six months 18,639 (53 ) (53 ) 0 0 Seven months through nine months 249,433 (4,058 ) (4,058 ) 0 0 Ten months through twelve months 96,024 (1,447 ) (1,447 ) 0 0 Greater than twelve months 24,847 (669 ) (543 ) (127 ) (0 ) Total $ 592,681 $ (6,866 ) $ (6,740 ) $ (127 ) $ (0 ) * As a percentage of amortized cost or cost. The change in unrealized gains (losses) on marketable securities included the following ($ in thousands): Pre-tax Six months ended June 30, 2017 Fixed Maturities Equity Securities Short-Term Investments Tax Effects Net Unrealized holding gains on securities arising during the period $ 9,950 $ 9,766 $ 3 $ (6,902 ) $ 12,818 Realized gains on securities sold (249 ) (2,155 ) (1 ) 842 (1,564 ) Impairment loss recognized in earnings 10 0 0 (3 ) 6 Change in unrealized, net $ 9,711 $ 7,611 $ 2 $ (6,063 ) $ 11,261 Six months ended June 30, 2016 Unrealized holding gains on securities arising during the period $ 25,531 $ 753 $ 3 $ (9,200 ) $ 17,086 Realized (gains) losses on securities sold (293 ) (0 ) 2 102 (189 ) Impairment loss recognized in earnings 316 0 0 (111 ) 205 Change in unrealized, net $ 25,553 $ 753 $ 5 $ (9,209 ) $ 17,102 For fixed maturity securities that are other-than-temporarily impaired, we assess our intent to sell and the likelihood that we will be required to sell the security before recovery of our amortized cost. If a fixed maturity security is considered other-than-temporarily impaired but we do not intend to and are not more than likely to be required to sell the security before our recovery to amortized cost, the amount of the impairment is separated into a credit loss component and the amount due to all other factors ("non-credit component"). The excess of the amortized cost over the present value of the expected cash flows determines the credit loss component of an impairment charge on a fixed maturity security. The present value is determined using the best estimate of cash flows discounted at (i) the effective interest rate implicit at the date of acquisition for non-structured securities; or (ii) the book yield for structured securities. The techniques and assumptions for determining the best estimate of cash flows vary depending on the type of security. We recognize the credit loss component of an impairment charge in net earnings and the non-credit component in accumulated other comprehensive income. If we intend to sell or will, more likely than not, be required to sell a security, the entire amount of the impairment is treated as a credit loss. For our securities held with unrealized losses, we believe, based on our analysis, that we will recover our cost basis in these securities and we do not intend to sell the securities nor is it more likely than not that there will be a requirement to sell the securities before they recover in value. The following table is a progression of credit losses on fixed maturity securities that were bifurcated between a credit and non-credit component ($ in thousands): Six months ended June 30, 2017 2016 Beginning balance $ 557 $ 683 Additions for: Newly impaired securities 10 0 Reductions for: Securities sold and paid down (57 ) (65 ) Ending balance $ 509 $ 618 The table below sets forth the scheduled maturities of fixed maturity securities at June 30, 2017 , based on their fair values ($ in thousands). We report securities that do not have a single maturity date at average maturity. Actual maturities may differ from contractual maturities because certain securities may be called or prepaid by the issuers. Fair Value Amortized Cost Maturity Securities with Unrealized Gains Securities with Unrealized Losses Securities with No Unrealized Gains or Losses All Fixed Maturity Securities All Fixed Maturity Securities One year or less $ 36,678 $ 41,079 $ 11,151 $ 88,909 $ 88,803 After one year through five years 438,388 209,919 0 648,308 643,656 After five years through ten years 190,801 57,673 0 248,474 243,611 After ten years 1,703 6,040 0 7,742 7,655 Mortgage- and asset-backed securities 168,056 277,545 0 445,602 448,090 Total $ 835,627 $ 592,256 $ 11,151 $ 1,439,034 $ 1,431,815

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt ($ in thousands) June 30, 2017 December 31, 2016 Principal $ 275,000 $ 275,000 Unamortized debt issuance costs 1,301 1,409 Long-term debt less unamortized debt issuance costs $ 273,699 $ 273,591 In September 2012 we issued $275 million principal of senior notes due September 2022 (the “ 5.0% Senior Notes”). The 5.0% Senior Notes accrue interest at 5.0% , payable semiannually. At the time we issued the 5.0% Senior Notes, we capitalized $2.2 million of debt issuance costs, which we are amortizing over the term of the 5.0% Senior Notes. We calculated the June 30, 2017 , fair value of $294.1 million using a 122 basis point spread to the 10 -year U.S. Treasury Note Yield of 2.305% . In August 2014 we renewed our agreement for a $50 million three -year revolving credit facility (the “Credit Agreement”) that requires us to meet certain financial and other covenants. We are currently in compliance with all covenants under the Credit Agreement, and as of June 30, 2017 , there were no borrowings outstanding against it.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The following is a reconciliation of income taxes at the statutory rate of 35.0% to the effective provision for income taxes as shown in the Consolidated Statements of Earnings ($ in thousands): Three months ended June 30, Six months ended June 30, 2017 2016 2017 2016 Earnings before income taxes $ 6,559 $ 16,040 $ 21,637 $ 26,816 Income taxes at statutory rate 2,296 5,614 7,573 9,386 Effect of: Dividends-received deduction (136 ) (150 ) (214 ) (222 ) Tax-exempt interest (616 ) (619 ) (1,248 ) (1,258 ) Other (31 ) 180 (165 ) 188 Provision for income taxes as shown on the Consolidated Statements of Earnings $ 1,513 $ 5,026 $ 5,945 $ 8,094 GAAP effective tax rate 23.1 % 31.3 % 27.5 % 30.2 %

Additional Information

Additional Information	6 Months Ended
	Jun. 30, 2017
Supplemental Cash Flow Elements [Abstract]
Additional Information	Additional Information Supplemental Cash Flow Information We made the following payments that we do not separately disclose in the Consolidated Statements of Cash Flows ($ in thousands): Three months ended June 30, Six months ended June 30, 2017 2016 2017 2016 Income tax payments $ 9,800 $ 3,551 $ 12,900 $ 3,551 Interest payments on debt 0 0 6,875 6,875 Interest payments on capital leases 19 19 40 40 Negative Cash Book Balances Negative cash book balances, included in the line item “Other liabilities” in the Consolidated Balance Sheets, were $40.6 million at June 30, 2017 and December 31, 2016 .

Insurance Reserves

Insurance Reserves	6 Months Ended
	Jun. 30, 2017
Insurance [Abstract]
Insurance Reserves	Insurance Reserves Insurance reserves include liabilities for unpaid losses, both known and estimated for incurred but not reported (IBNR), and unpaid loss adjustment expenses (LAE). The following table provides an analysis of changes in the liability for unpaid losses and LAE on a GAAP basis ($ in thousands): Three months ended June 30, Six months ended June 30, 2017 2016 2017 2016 Balance at Beginning of Period Unpaid losses on known claims $ 233,303 $ 236,701 $ 238,412 $ 237,660 IBNR losses 307,932 295,281 306,641 290,097 LAE 137,712 141,493 140,402 142,207 Total unpaid losses and LAE 678,947 673,475 685,455 669,965 Reinsurance recoverables (16,133 ) (17,724 ) (17,130 ) (14,694 ) Unpaid losses and LAE, net of reinsurance recoverables 662,814 655,751 668,325 655,271 Current Activity Loss and LAE incurred: Current accident year 280,356 275,687 557,400 546,854 Prior accident years (6,736 ) (12,173 ) (13,104 ) (18,056 ) Total loss and LAE incurred 273,621 263,514 544,296 528,798 Loss and LAE payments: Current accident year (163,911 ) (174,138 ) (260,780 ) (263,582 ) Prior accident years (88,850 ) (97,405 ) (268,169 ) (272,764 ) Total loss and LAE payments (252,761 ) (271,543 ) (528,948 ) (536,347 ) Balance at End of Period Unpaid losses and LAE, net of reinsurance recoverables 683,673 647,723 683,673 647,723 Add back reinsurance recoverables 17,425 18,487 17,425 18,487 Total unpaid losses and LAE 701,097 666,210 701,097 666,210 Unpaid losses on known claims 235,400 236,947 235,400 236,947 IBNR losses 323,184 290,767 323,184 290,767 LAE 142,513 138,496 142,513 138,496 Total unpaid losses and LAE $ 701,097 $ 666,210 $ 701,097 $ 666,210 The $6.7 million and $13.1 million of favorable reserve development during the three and six months ended June 30, 2017 , respectively, was primarily due to decreases in ultimate frequency and severity estimates in California along with lower ultimate frequency estimates in Florida related to material damage and uninsured motorists bodily injury coverages for accident year 2016. This favorable development was partially offset by increases in ultimate severity estimates in bodily injury and personal injury protection coverages in our commercial auto product as well as from personal injury protection in our personal auto product. The $12.2 million and $18.1 million of favorable reserve development during the three and six months ended June 30, 2016 , respectively, was primarily due to decreases in severity estimates related to Florida personal injury protection and bodily injury coverages and a decrease in California bodily injury loss adjustment expenses, and primarily related to accident years 2014 and prior. The favorable development for the six months ended June 30, 2016, was partially offset by unfavorable development from accident year 2015 in California material damage coverages, driven by an increase in severity.

Commitments And Contingencies

Commitments And Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments There have been no material changes from the commitments discussed on Form 10-K for the year ended December 31, 2016 . For a description of our previously reported commitments, refer to Note 14 Commitments and Contingencies of our Form 10-K for the year ended December 31, 2016 . Contingencies From time to time, we and our subsidiaries are named as defendants in various lawsuits incidental to our insurance operations. We consider legal actions relating to claims made in the ordinary course of seeking indemnification for a loss covered by the insurance policy in establishing loss and LAE reserves. We also face in the ordinary course of business lawsuits that seek damages beyond policy limits, commonly known as extra-contractual claims, as well as class action and individual lawsuits that involve issues not unlike those facing other insurance companies and employers. We continually evaluate potential liabilities and reserves for litigation of these types using the criteria established by the Contingencies topic of the FASB Accounting Standards Codification. Under this guidance, we may only record reserves for a loss if the likelihood of occurrence is probable and we can reasonably estimate the amount or range of the loss. When disclosing litigation or claims where a material loss is judged to be reasonably possible, we will disclose an estimated range of loss or state that an estimate cannot be made. We consider each legal action using this guidance and record reserves for losses as warranted by establishing a reserve captured within our Consolidated Balance Sheets line-items “Unpaid losses and loss adjustment expenses” for extra-contractual claims and “Other liabilities” for class action and other non-claims related lawsuits. We record amounts incurred on the Consolidated Statements of Earnings within “Losses and loss adjustment expenses” for extra-contractual claims and “Other expenses” for class action and other non-claims related lawsuits. The following legal actions have been brought against us for which we have accrued no loss, and for which an estimate of a possible range of loss cannot be made under the above rules. While it is not possible to predict the ultimate outcome of these lawsuits, we do not believe they are likely to have a material effect on our financial condition or liquidity. However, losses incurred because of these cases could have a material adverse impact on net earnings in a given period. In Reyes v. Infinity Indemnity Insurance Company (Circuit Court of Miami-Dade County, Florida), which was initially filed on June 4, 2014, a third-party claimant is attempting to recover from Infinity a $30 million consent judgment obtained against an Infinity policyholder for personal injuries suffered by the claimant. In December 2014 the trial court granted Infinity's motion for partial summary judgment, finding the consent judgment unenforceable and that no bad faith claim could exist as a matter of law. The plaintiff successfully appealed that ruling. Petitions for Rehearing and for Certiorari Review by the Florida Supreme Court were denied on March 10, 2017 and June 14, 2017, respectively sending the matter back to the trial court, where resumed litigation is expected to focus next on the issues of coverage and duty to defend. We will continue to vigorously defend against all claims in this case. As of June 30, 2017, pending putative (i.e., not certified) class action lawsuits that challenge certain of Infinity’s business operations and practices included the following: • allegations we sold a lessor liability endorsement affording only illusory coverage. • a challenge to denial of personal injury protection benefits to a class of injured third parties in vehicle accidents. • a challenge to our payment of a percentage of arbitration awards to collection agencies in successful intercompany arbitrations. • allegations that we are obligated to reimburse Medicare or secondary payers for accident-related medical payments in which personal injury protection benefits were denied. In addition to lawsuits, regulatory bodies, including state insurance departments and the Securities and Exchange Commission, among others, may make inquiries, investigate consumer complaints or conduct on-site examinations concerning specific business practices or compliance more generally. Such inquiries, investigations or examinations have in the past and may in the future directly or indirectly result in regulatory orders requiring remedial, injunctive or other actions or the assessment of substantial fines or other penalties. During the first quarter of 2017, as a result of our review of certain business practices surrounding a California consumer complaint to the California Department of Insurance (CDI), a $3.8 million adjustment was made to written and earned premium, reflecting premium to be returned to policyholders. During the second quarter, the CDI inquired about how we estimate and adjust an insured's annual mileage driven. Under California's auto insurance regulations, annual miles driven is one of three mandatory factors used to determine insurance premium rates. Although we believe we are in compliance with applicable regulations, we opted to revise the methodology we employ during the renewal process for estimating changes in annual miles. This change resulted in lowering mileage on approximately 200,000 policies renewed predominately in years 2016 and 2017, and correspondingly lowering rates on those policies. Any excess premiums collected are being returned to policyholders, which resulted in premium adjustments to written and earned premium for the second quarter of $18.3 million and $12.4 million , respectively. While we believe our policies fully comply with all state regulations, given the broad administrative and interpretative powers of state insurance departments, future and unanticipated judicial, regulatory or legislative changes may raise challenges over established rate, underwriting or claims practices. For a description of previously reported contingencies, refer to Note 14 Commitments and Contingencies in the Form 10-K for the year ended December 31, 2016.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	6 Months Ended
	Jun. 30, 2017
Stockholders' Equity Note [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income The components of other comprehensive income before and after tax are as follows ($ in thousands): Three months ended June 30, 2017 2016 Before Tax Income Tax Net Before Tax Income Tax Net Accumulated change in post-retirement benefit liability, beginning of period $ 1,020 $ (357 ) $ 663 $ 934 $ (327 ) $ 607 Effect on other comprehensive income (13 ) 4 (8 ) (11 ) 4 (7 ) Accumulated change in post-retirement benefit liability, end of period 1,007 (353 ) 655 923 (323 ) 600 Accumulated unrealized gains on investments, net, beginning of period 21,288 (7,451 ) 13,837 26,392 (9,237 ) 17,155 Other comprehensive income before reclassification 9,055 (3,169 ) 5,886 10,828 (3,790 ) 7,038 Reclassification adjustment for other-than-temporary impairments included in net income 0 0 0 198 (69 ) 129 Reclassification adjustment for realized gains included in net income (1,886 ) 660 (1,226 ) (34 ) 12 (22 ) Effect on other comprehensive income 7,169 (2,509 ) 4,660 10,992 (3,847 ) 7,144 Accumulated unrealized gains on investments, net, end of period 28,457 (9,960 ) 18,497 37,383 (13,084 ) 24,299 Accumulated other comprehensive income, beginning of period 22,308 (7,808 ) 14,500 27,326 (9,564 ) 17,762 Change in post-retirement benefit liability (13 ) 4 (8 ) (11 ) 4 (7 ) Change in unrealized gains on investments, net 7,169 (2,509 ) 4,660 10,992 (3,847 ) 7,144 Effect on other comprehensive income 7,156 (2,505 ) 4,652 10,981 (3,843 ) 7,137 Accumulated other comprehensive income, end of period $ 29,464 $ (10,312 ) $ 19,152 $ 38,306 $ (13,407 ) $ 24,899 Six months ended June 30, 2017 2016 Before Tax Income Tax Net Before Tax Income Tax Net Accumulated change in post-retirement benefit liability, beginning of period $ 1,033 $ (361 ) $ 671 $ 944 $ (331 ) $ 614 Effect on other comprehensive income (25 ) 9 (16 ) (22 ) 8 (14 ) Accumulated change in post-retirement benefit liability, end of period 1,007 (353 ) 655 923 (323 ) 600 Accumulated unrealized gains on investments, net, beginning of period 11,133 (3,896 ) 7,236 11,072 (3,875 ) 7,197 Other comprehensive income before reclassification 19,720 (6,902 ) 12,818 26,287 (9,200 ) 17,086 Reclassification adjustment for other-than-temporary impairments included in net income 10 (3 ) 6 316 (111 ) 205 Reclassification adjustment for realized gains included in net income (2,406 ) 842 (1,564 ) (291 ) 102 (189 ) Effect on other comprehensive income 17,324 (6,063 ) 11,261 26,311 (9,209 ) 17,102 Accumulated unrealized gains on investments, net, end of period 28,457 (9,960 ) 18,497 37,383 (13,084 ) 24,299 Accumulated other comprehensive income, beginning of period 12,165 (4,258 ) 7,907 12,016 (4,206 ) 7,811 Change in post-retirement benefit liability (25 ) 9 (16 ) (22 ) 8 (14 ) Change in unrealized gains on investments, net 17,324 (6,063 ) 11,261 26,311 (9,209 ) 17,102 Effect on other comprehensive income 17,299 (6,055 ) 11,244 26,290 (9,201 ) 17,088 Accumulated other comprehensive income, end of period $ 29,464 $ (10,312 ) $ 19,152 $ 38,306 $ (13,407 ) $ 24,899

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Segment Information	Segment Information We manage our business based on product line and have three operating segments: Personal Auto, Commercial Auto and Classic Collector (our reportable segments are Personal Auto and Commercial Auto). Our Personal Auto product provides coverage to individuals for liability to others for bodily injury and property damage and for physical damage to an insured's own vehicle from collision and various other perils. In addition, some states require policies to provide for first party personal injury protection, frequently referred to as no-fault coverage. Our Commercial Auto product provides coverage to businesses for liability to others for bodily injury and property damage and for physical damage to vehicles from collision and various other perils. We primarily target businesses with fleets of 20 or fewer vehicles and average 1.9 vehicles per policy. We avoid businesses that are involved in what we consider to be hazardous operations or interstate commerce. Our Classic Collector product provides coverage to individuals with classic or antique automobiles for liability to others for bodily injury and property damage and for physical damage to an insured's own vehicle from collision and various other perils. All segment revenues are generated from external customers. The following table provides revenues by segment and a reconciliation to "Total revenues" as reported on the Consolidated Statements of Earnings ($ in thousands): Three months ended June 30, Six months ended June 30, Gross written premium: 2017 2016 2017 2016 Personal Auto $ 276,928 $ 294,654 $ 601,280 $ 632,154 Commercial Auto 41,806 37,409 84,591 72,649 Classic Collector 5,056 4,898 8,621 8,126 Total gross written premium 323,790 336,961 694,491 712,929 Ceded reinsurance: Personal Auto (1,005 ) (1,000 ) (1,988 ) (2,012 ) Commercial Auto (1) 1,253 1,244 (159 ) (1,750 ) Classic Collector (209 ) (187 ) (422 ) (437 ) Total ceded reinsurance 39 57 (2,569 ) (4,199 ) Net written premium: Personal Auto 275,923 293,654 599,292 630,142 Commercial Auto 43,059 38,653 84,432 70,899 Classic Collector 4,848 4,711 8,199 7,689 Total net written premium 323,829 337,018 691,923 708,730 Change in unearned premium: Personal Auto 22,526 12,270 1,543 (20,429 ) Commercial Auto (6,208 ) (7,555 ) (12,378 ) (10,988 ) Classic Collector (1,000 ) (1,019 ) (572 ) (413 ) Total change in unearned premium 15,318 3,697 (11,407 ) (31,830 ) Earned premium: Personal Auto 298,449 305,925 600,835 609,713 Commercial Auto 36,851 31,098 72,054 59,911 Classic Collector 3,848 3,692 7,627 7,276 Total earned premium 339,147 340,715 680,516 676,899 Installment and other fee income: Personal Auto 23,558 22,851 47,706 46,023 Commercial Auto 2,903 2,534 5,705 4,880 Classic Collector 0 0 0 0 Total installment and other fee income 26,461 25,385 53,410 50,903 Net investment income 9,001 8,927 17,696 16,990 Net realized gains on investments 1,886 (164 ) 2,396 (25 ) Other income 391 220 666 478 Total revenues $ 376,886 $ 375,084 $ 754,683 $ 745,246 (1) Effective June 1, 2017, the premium paid for our excess of loss reinsurance contract for our commercial auto business is now based on earned premium rather than written premium. Premium ceded during the three and six months ended June 30, 2017 includes the return of $2.6 million of unearned premium due to the termination of the previous excess of loss contract. Our management uses underwriting income and combined ratios calculated on a statutory accident year basis as primary measures of profitability. Statutory accident year underwriting income is calculated by subtracting losses and loss adjustment expenses and commissions and other underwriting expenses (including bad debt charge-offs on agents' balances and premium receivables) from the total of earned premium and installment and other fee income. The statutory accident year combined ratio represents the sum of the following ratios: (i) losses and LAE incurred, excluding development from prior accident years, as a percentage of net earned premium; and (ii) underwriting expenses incurred, including bad debt and net of fees, as a percentage of net written premium. The primary differences between the calculation of the statutory accident year used by management and the statutory calendar year combined ratios is the exclusion of bad debt charge-offs and the inclusion of development on prior accident year loss and LAE reserves. Certain expenses are treated differently under statutory accounting principles. Under GAAP, commissions, premium taxes and other variable costs incurred in connection with successfully writing new and renewal business are capitalized as deferred policy acquisition costs and amortized on a pro rata basis over the period in which the related premium is earned. On a statutory basis, these items are expensed as incurred. Additionally, bad debt charge-offs on agents' balances and premium receivables are included in the GAAP combined ratios. The following tables present the underwriting income and combined ratio on a statutory accident year basis with reconciliations to "Earnings before income taxes" as presented on the Consolidated Statements of Earnings ($ in thousands). We do not allocate assets or "Provision for income taxes" to operating segments. Three months ended June 30, 2017 Personal Auto Commercial Auto Classic Collector Total Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Statutory accident year underwriting income $ (2,384 ) 102.2 % $ 1,207 94.0 % $ (57 ) 92.6 % $ (1,235 ) 101.2 % Bad debt charge-offs 3,672 466 1 4,138 Favorable (unfavorable) development on prior accident years 9,060 (2,234 ) (90 ) 6,736 Statutory calendar year underwriting income 10,347 97.8 % (561 ) 99.0 % (146 ) 95.0 % 9,639 97.9 % Statutory-to-GAAP underwriting income differences (7,892 ) GAAP calendar year underwriting income 1,747 99.5 % Net investment income 9,001 Net realized gains on investments 1,886 Other income 391 Interest expense (3,511 ) Corporate general and administrative expenses (2,447 ) Other expenses (507 ) Earnings before income taxes $ 6,559 (1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases. Three months ended June 30, 2016 Personal Auto Commercial Auto Classic Collector Total Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Statutory accident year underwriting income $ 3,467 99.6 % $ (765 ) 97.6 % $ 28 90.6 % $ 2,730 99.4 % Bad debt charge-offs 4,334 459 7 4,800 Favorable (unfavorable) development on prior accident years 11,426 1,042 (295 ) 12,173 Statutory calendar year underwriting income 19,227 94.4 % 736 93.0 % (261 ) 98.5 % 19,703 94.4 % Statutory-to-GAAP underwriting income differences (6,280 ) GAAP calendar year underwriting income 13,422 96.1 % Net investment income 8,927 Net realized gains on investments (164 ) Other income 220 Interest expense (3,508 ) Corporate general and administrative expenses (2,060 ) Other expenses (797 ) Earnings before income taxes $ 16,040 (1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases. Six months ended June 30, 2017 Personal Auto Commercial Auto Classic Collector Total Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Statutory accident year underwriting income $ (790 ) 100.2 % $ 1,836 94.6 % $ 278 93.7 % $ 1,323 99.5 % Bad debt charge-offs 5,923 756 11 6,690 Favorable (unfavorable) development on prior accident years 16,046 (3,108 ) 166 13,104 Statutory calendar year underwriting income 21,178 96.4 % (517 ) 98.0 % 456 91.4 % 21,117 96.6 % Statutory-to-GAAP underwriting income differences (7,667 ) GAAP calendar year underwriting income 13,450 98.0 % Net investment income 17,696 Net realized gains on investments 2,396 Other income 666 Interest expense (7,023 ) Corporate general and administrative expenses (4,718 ) Other expenses (829 ) Earnings before income taxes $ 21,637 (1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases. Six months ended June 30, 2016 Personal Auto Commercial Auto Classic Collector Total Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Statutory accident year underwriting income $ 1,417 99.2 % $ (1,480 ) 99.1 % $ 818 87.0 % $ 754 99.0 % Bad debt charge-offs 7,366 813 17 8,197 Favorable (unfavorable) development on prior accident years 15,080 2,922 53 18,056 Statutory calendar year underwriting income 23,863 95.4 % 2,255 93.0 % 888 86.0 % 27,007 95.2 % Statutory-to-GAAP underwriting income differences (5,773 ) GAAP calendar year underwriting income 21,234 96.9 % Net investment income 16,990 Net realized gains on investments (25 ) Other income 478 Interest expense (7,017 ) Corporate general and administrative expenses (3,764 ) Other expenses (1,080 ) Earnings before income taxes $ 26,816 (1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases.

Significant Reporting And Acc19

Significant Reporting And Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Basis of Consolidation and Reporting	Basis of Consolidation and Reporting The accompanying consolidated financial statements are unaudited and should be read in conjunction with our Annual Report on Form 10-K (Form 10-K) for the year ended December 31, 2016 . This Quarterly Report on Form 10-Q, including the Condensed Notes to Consolidated Financial Statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations, focuses on our financial performance since the beginning of the year. These financial statements reflect certain adjustments necessary for a fair presentation of our results of operations and financial position. Such adjustments consist of normal, recurring accruals recorded to accurately match expenses with their related revenue streams and the elimination of all significant intercompany transactions and balances. We have evaluated events that occurred after June 30, 2017 , for recognition or disclosure in our financial statements and the notes to the financial statements. Schedules may not foot due to rounding.
Estimates	Estimates We based certain accounts and balances within these financial statements upon our estimates and assumptions. The amount of reserves for claims not yet paid, for example, is an item that we can only record by estimation. Unrealized capital gains and losses on investments are subject to market fluctuations, and we use judgment in the determination of whether unrealized losses on certain securities are temporary or other-than-temporary. Should actual results differ significantly from these estimates, the effect on our results of operations could be material. The results of operations for the periods presented may not be indicative of our results for the entire year.
Recently Adopted and Issued Accounting Standards	Recently Adopted Accounting Standards In March 2016 the FASB issued an ASU related to the accounting for employee share-based payments. The guidance addresses the recognition, presentation and classification of awards, forfeitures and shares withheld for tax purposes. We adopted the change to the presentation of excess tax benefits on the consolidated statements of cash flow retrospectively and all other portions of the standard prospectively as of January 1, 2017. We reclassified $0.2 million of excess tax benefits from financing activities to operating activities for both the three and six months ended June 30, 2016, respectively. The adoption of this standard did not have a material impact on our financial condition or results of operations. Recently Issued Accounting Standards In March 2017 the FASB issued an ASU related to the amortization of premium on purchased callable debt securities. The guidance amends the amortization period for certain purchased callable debt securities held at a premium. Securities that contain explicit, noncontingent call features that are callable at fixed prices and on preset dates should shorten the amortization period for the premium to the earliest call date (and if the call option is not exercised, the effective yield is reset using the payment terms of the debt security). The standard is effective for fiscal years, and interim period within those years, beginning after December 15, 2018, and is to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations. In October 2016 the FASB issued an ASU related to the recognition of income tax on intra-entity transfers of assets other than inventory. The guidance requires the income tax to be recognized when the transfer occurs rather than when the asset is sold to an outside party. The standard is effective for annual periods beginning after December 15, 2017, and interim periods within the year of adoption, and is to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations. In June 2016 the FASB issued an ASU related to the accounting for credit losses. The guidance generally requires credit losses on available-for-sale debt securities to be recognized as an allowance rather than as a reduction to the amortized cost of a security. The standard is effective for fiscal periods beginning after December 15, 2019, and interim periods within the year of adoption, with prospective application of the ASU required for debt securities for which an other-than-temporary impairment has been recognized before the implementation date. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations. In February 2016 the FASB issued an ASU related to the accounting for leases. The guidance requires lessees to recognize lease assets and liabilities on the balance sheet. The standard is effective for fiscal years beginning after December 15, 2018, and is to be applied retrospectively, with an option to use a modified retrospective approach for leases which commenced prior to the effective date of this ASU. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations. In January 2016 the FASB issued an ASU amending the guidance on classifying and measuring financial instruments. The guidance requires equity securities to be measured at fair value and changes in that fair value to be recognized through net income. The standard is effective for fiscal years beginning after December 15, 2017, with a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. We currently record equity securities at fair value and as of June 30, 2017 , we have $13.8 million net unrealized gains , net of tax, recognized as a component of other comprehensive income. In May 2014 the FASB issued an ASU related to the accounting for revenue from contracts with customers. Insurance contracts have been excluded from the scope of the guidance. In August 2015 the FASB issued an ASU to defer the effective date from fiscal years beginning after December 15, 2016, to fiscal years beginning after December 15, 2017. We do not expect the adoption of this standard to have a material impact on our financial condition or results of operations. As an insurance-entity, we are largely exempt from the provisions of this standard, with only fee income totaling $107.4 million for the year ended December 31, 2016, subject to this new standard.

Computation of Net Earnings per

Computation of Net Earnings per Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Earnings Per Common Share	The following table illustrates our computations of basic and diluted net earnings per common share ($ in thousands, except per share figures): Three months ended June 30, Six months ended June 30, 2017 2016 2017 2016 Net earnings $ 5,046 $ 11,015 $ 15,692 $ 18,723 Average basic shares outstanding 11,006 11,012 11,002 11,024 Basic net earnings per share $ 0.46 $ 1.00 $ 1.43 $ 1.70 Average basic shares outstanding 11,006 11,012 11,002 11,024 Restricted stock not vested 36 24 34 22 Dilutive effect of Performance Share Plan 41 60 68 69 Average diluted shares outstanding 11,082 11,096 11,105 11,115 Diluted net earnings per share $ 0.46 $ 0.99 $ 1.41 $ 1.68

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair value by hierarchy	The following tables present, for each of the fair value hierarchy levels, our assets and liabilities for which we report fair value on a recurring basis ($ in thousands): Fair Value June 30, 2017 Level 1 Level 2 Level 3 Total Cash and cash equivalents $ 87,608 $ 0 $ 0 $ 87,608 Fixed maturity securities: U.S. government 64,025 0 0 64,025 State and municipal 0 498,709 3,447 502,156 Mortgage-backed securities: Residential 0 351,766 0 351,766 Commercial 0 42,060 0 42,060 Total mortgage-backed securities 0 393,826 0 393,826 Asset-backed securities 0 51,527 249 51,775 Corporates 0 427,038 215 427,252 Total fixed maturities 64,025 1,371,099 3,910 1,439,034 Equity securities 95,508 0 0 95,508 Short-term investments 0 425 0 425 Total cash and investments $ 247,141 $ 1,371,524 $ 3,910 $ 1,622,575 Percentage of total cash and investments 15.2 % 84.5 % 0.2 % 100.0 % December 31, 2016 Cash and cash equivalents $ 92,800 $ 0 $ 0 $ 92,800 Fixed maturity securities: U.S. government 62,480 5 0 62,485 State and municipal 0 472,471 3,860 476,331 Mortgage-backed securities: Residential 0 340,367 0 340,367 Commercial 0 69,801 0 69,801 Total mortgage-backed securities 0 410,169 0 410,169 Asset-backed securities 0 37,196 412 37,608 Corporates 0 402,909 666 403,575 Total fixed maturities 62,480 1,322,749 4,938 1,390,167 Equity securities 90,640 0 0 90,640 Short-term investments 769 2,139 0 2,907 Total cash and investments $ 246,689 $ 1,324,888 $ 4,938 $ 1,576,514 Percentage of total cash and investments 15.6 % 84.0 % 0.3 % 100.0 %
Fair value level 3 reconciliation	The following tables present the progression in the Level 3 fair value category ($ in thousands): Three months ended June 30, 2017 State and Municipal Asset-Backed Securities Corporates Total Balance at beginning of period $ 3,479 $ 4,584 $ 2,553 $ 10,616 Total (losses) gains, unrealized or realized Included in net earnings (29 ) 0 0 (29 ) Included in other comprehensive income (3 ) 1 (4 ) (6 ) Settlements 0 (76 ) (335 ) (411 ) Transfers out 0 (4,259 ) (2,000 ) (6,259 ) Balance at end of period $ 3,447 $ 249 $ 215 $ 3,910 Three months ended June 30, 2016 Balance at beginning of period $ 0 $ 1,338 $ 1,442 $ 2,781 Total (losses) gains, unrealized or realized Included in net earnings (4 ) 0 4 (0 ) Included in other comprehensive income 1 1 (26 ) (24 ) Purchases 0 620 0 620 Settlements 0 0 (312 ) (312 ) Transfers in 628 0 0 628 Balance at end of period $ 626 $ 1,959 $ 1,107 $ 3,692 Six months ended June 30, 2017 State and Municipal Asset-Backed Securities Corporates Total Balance at beginning of period $ 3,860 $ 412 $ 666 $ 4,938 Total (losses) gains, unrealized or realized Included in net earnings (60 ) 0 2 (59 ) Included in other comprehensive income 12 1 (26 ) (12 ) Purchases 0 4,259 2,000 6,259 Sales (694 ) 0 0 (694 ) Settlements 0 (165 ) (427 ) (591 ) Transfers in 329 0 0 329 Transfers out 0 (4,259 ) (2,000 ) (6,259 ) Balance at end of period $ 3,447 $ 249 $ 215 $ 3,910 Six months ended June 30, 2016 Balance at beginning of period $ 10 $ 0 $ 1,524 $ 1,534 Total losses, unrealized or realized Included in net earnings (4 ) 0 7 3 Included in other comprehensive income 1 1 (25 ) (23 ) Purchases 0 620 0 620 Sales 0 0 0 0 Settlements (10 ) 0 (398 ) (408 ) Transfers in 628 1,338 0 1,966 Transfers out 0 0 0 0 Balance at end of period $ 626 $ 1,959 $ 1,107 $ 3,692
Carrying Value and Estimated Fair Value	The following table presents the carrying value and estimated fair value of our financial instruments ($ in thousands): June 30, 2017 December 31, 2016 Carrying Value Fair Value Carrying Value Fair Value Assets: Cash and cash equivalents $ 87,608 $ 87,608 $ 92,800 $ 92,800 Available-for-sale securities: Fixed maturities 1,439,034 1,439,034 1,390,167 1,390,167 Equity securities 95,508 95,508 90,640 90,640 Short-term investments 425 425 2,907 2,907 Total cash and investments $ 1,622,575 $ 1,622,575 $ 1,576,514 $ 1,576,514 Liabilities: Long-term debt $ 273,699 $ 294,132 $ 273,591 $ 278,726

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Summary of information of investment portfolio	Summarized information for the major categories of our investment portfolio follows ($ in thousands): June 30, 2017 Amortized Cost or Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value OTTI Recognized in Accumulated OCI (1) Fixed maturities: U.S. government $ 64,192 $ 66 $ (234 ) $ 64,025 $ 0 State and municipal 497,850 5,085 (778 ) 502,156 (47 ) Mortgage-backed securities: Residential 353,813 2,264 (4,311 ) 351,766 (1,856 ) Commercial 42,609 65 (614 ) 42,060 0 Total mortgage-backed securities 396,422 2,328 (4,924 ) 393,826 (1,856 ) Asset-backed securities 51,668 130 (22 ) 51,775 (8 ) Corporates 421,684 6,476 (908 ) 427,252 (31 ) Total fixed maturities 1,431,815 14,085 (6,866 ) 1,439,034 (1,942 ) Equity securities 74,270 21,238 0 95,508 0 Short-term investments 425 0 (0 ) 425 0 Total $ 1,506,511 $ 35,323 $ (6,866 ) $ 1,534,967 $ (1,942 ) December 31, 2016 Fixed maturities: U.S. government $ 62,808 $ 55 $ (377 ) $ 62,485 $ 0 State and municipal 477,834 2,313 (3,816 ) 476,331 (51 ) Mortgage-backed securities: Residential 343,095 2,306 (5,034 ) 340,367 (1,967 ) Commercial 70,676 63 (939 ) 69,801 0 Total mortgage-backed securities 413,772 2,369 (5,972 ) 410,169 (1,967 ) Asset-backed securities 37,562 93 (47 ) 37,608 (8 ) Corporates 400,685 4,389 (1,499 ) 403,575 (41 ) Total fixed maturities 1,392,660 9,219 (11,711 ) 1,390,167 (2,068 ) Equity securities 77,013 13,627 0 90,640 0 Short-term investments 2,909 0 (2 ) 2,907 0 Total $ 1,472,582 $ 22,846 $ (11,713 ) $ 1,483,714 $ (2,068 ) (1) The total non-credit portion of OTTI recognized in Accumulated OCI reflecting the original non-credit loss at the time the credit impairment was determined.
Unrealized loss by investment category and length of time	The following tables set forth the amount of unrealized loss by investment category and length of time that individual securities have been in a continuous unrealized loss position ($ in thousands): Less than 12 Months 12 Months or More June 30, 2017 Number of Securities with Unrealized Losses Fair Value Gross Unrealized Losses Unrealized Losses as % of Cost Number of Securities with Unrealized Losses Fair Value Gross Unrealized Losses Unrealized Losses as % of Cost Fixed maturities: U.S. government 30 $ 48,093 $ (233 ) 0.5 % 1 $ 765 $ (1 ) 0.1 % State and municipal 81 157,706 (713 ) 0.4 % 1 3,743 (66 ) 1.7 % Mortgage-backed securities: Residential 382 220,947 (3,790 ) 1.7 % 46 13,071 (520 ) 3.8 % Commercial 11 28,392 (602 ) 2.1 % 3 5,027 (12 ) 0.2 % Total mortgage-backed securities 393 249,339 (4,392 ) 1.7 % 49 18,098 (532 ) 2.9 % Asset-backed securities 9 8,653 (17 ) 0.2 % 1 1,455 (5 ) 0.3 % Corporates 74 98,429 (756 ) 0.8 % 6 5,975 (152 ) 2.5 % Total fixed maturities 587 562,220 (6,111 ) 1.1 % 58 30,036 (755 ) 2.5 % Short-term investments 1 425 (0 ) 0.0 % 0 0 0 0.0 % Total 588 $ 562,645 $ (6,111 ) 1.1 % 58 $ 30,036 $ (755 ) 2.5 % December 31, 2016 Fixed maturities: U.S. government 31 $ 47,640 $ (377 ) 0.8 % 0 $ 0 $ 0 0.0 % State and municipal 146 303,428 (3,816 ) 1.2 % 0 0 0 0.0 % Mortgage-backed securities: Residential 381 225,117 (4,559 ) 2.0 % 40 11,891 (474 ) 3.8 % Commercial 14 38,002 (788 ) 2.0 % 7 26,537 (150 ) 0.6 % Total mortgage-backed securities 395 263,119 (5,347 ) 2.0 % 47 38,428 (625 ) 1.6 % Asset-backed securities 9 7,836 (46 ) 0.6 % 1 519 (1 ) 0.1 % Corporates 98 145,089 (1,272 ) 0.9 % 7 7,745 (227 ) 2.8 % Total fixed maturities 679 767,112 (10,859 ) 1.4 % 55 46,693 (852 ) 1.8 % Short-term investments 3 2,907 (2 ) 0.1 % 0 0 0 0.0 % Total 682 $ 770,019 $ (10,861 ) 1.4 % 55 $ 46,693 $ (852 ) 1.8 %
Summary of unrealized gains or losses	The following table summarizes those securities, excluding the rabbi trust, with unrealized gains or losses: June 30, 2017 December 31, 2016 Number of positions held with unrealized: Gains 677 527 Losses 646 737 Number of positions held that individually exceed unrealized: Gains of $500,000 2 1 Losses of $500,000 0 0 Percentage of positions held with unrealized: Gains that were investment grade 86 % 85 % Losses that were investment grade 96 % 97 % Percentage of fair value held with unrealized: Gains that were investment grade 87 % 84 % Losses that were investment grade 96 % 97 %
Unrealized loss by age and severity	The following table sets forth the amount of unrealized losses, excluding the rabbi trust, by age and severity at June 30, 2017 ($ in thousands): Age of Unrealized Losses Fair Value of Securities with Unrealized Losses Total Gross Unrealized Losses Less Than 5%* 5% - 10%* Total Gross Greater Than 10%* Three months or less $ 203,738 $ (638 ) $ (638 ) $ 0 $ 0 Four months through six months 18,639 (53 ) (53 ) 0 0 Seven months through nine months 249,433 (4,058 ) (4,058 ) 0 0 Ten months through twelve months 96,024 (1,447 ) (1,447 ) 0 0 Greater than twelve months 24,847 (669 ) (543 ) (127 ) (0 ) Total $ 592,681 $ (6,866 ) $ (6,740 ) $ (127 ) $ (0 ) * As a percentage of amortized cost or cost.
Change in unrealized gains (losses) on marketable securities	The change in unrealized gains (losses) on marketable securities included the following ($ in thousands): Pre-tax Six months ended June 30, 2017 Fixed Maturities Equity Securities Short-Term Investments Tax Effects Net Unrealized holding gains on securities arising during the period $ 9,950 $ 9,766 $ 3 $ (6,902 ) $ 12,818 Realized gains on securities sold (249 ) (2,155 ) (1 ) 842 (1,564 ) Impairment loss recognized in earnings 10 0 0 (3 ) 6 Change in unrealized, net $ 9,711 $ 7,611 $ 2 $ (6,063 ) $ 11,261 Six months ended June 30, 2016 Unrealized holding gains on securities arising during the period $ 25,531 $ 753 $ 3 $ (9,200 ) $ 17,086 Realized (gains) losses on securities sold (293 ) (0 ) 2 102 (189 ) Impairment loss recognized in earnings 316 0 0 (111 ) 205 Change in unrealized, net $ 25,553 $ 753 $ 5 $ (9,209 ) $ 17,102
Progression of credit losses on fixed maturity securities	The following table is a progression of credit losses on fixed maturity securities that were bifurcated between a credit and non-credit component ($ in thousands): Six months ended June 30, 2017 2016 Beginning balance $ 557 $ 683 Additions for: Newly impaired securities 10 0 Reductions for: Securities sold and paid down (57 ) (65 ) Ending balance $ 509 $ 618
Scheduled maturities of fixed maturity securities	The table below sets forth the scheduled maturities of fixed maturity securities at June 30, 2017 , based on their fair values ($ in thousands). We report securities that do not have a single maturity date at average maturity. Actual maturities may differ from contractual maturities because certain securities may be called or prepaid by the issuers. Fair Value Amortized Cost Maturity Securities with Unrealized Gains Securities with Unrealized Losses Securities with No Unrealized Gains or Losses All Fixed Maturity Securities All Fixed Maturity Securities One year or less $ 36,678 $ 41,079 $ 11,151 $ 88,909 $ 88,803 After one year through five years 438,388 209,919 0 648,308 643,656 After five years through ten years 190,801 57,673 0 248,474 243,611 After ten years 1,703 6,040 0 7,742 7,655 Mortgage- and asset-backed securities 168,056 277,545 0 445,602 448,090 Total $ 835,627 $ 592,256 $ 11,151 $ 1,439,034 $ 1,431,815

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Schedule of long-term debt	($ in thousands) June 30, 2017 December 31, 2016 Principal $ 275,000 $ 275,000 Unamortized debt issuance costs 1,301 1,409 Long-term debt less unamortized debt issuance costs $ 273,699 $ 273,591

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Reconciliation of provision for income taxes	The following is a reconciliation of income taxes at the statutory rate of 35.0% to the effective provision for income taxes as shown in the Consolidated Statements of Earnings ($ in thousands): Three months ended June 30, Six months ended June 30, 2017 2016 2017 2016 Earnings before income taxes $ 6,559 $ 16,040 $ 21,637 $ 26,816 Income taxes at statutory rate 2,296 5,614 7,573 9,386 Effect of: Dividends-received deduction (136 ) (150 ) (214 ) (222 ) Tax-exempt interest (616 ) (619 ) (1,248 ) (1,258 ) Other (31 ) 180 (165 ) 188 Provision for income taxes as shown on the Consolidated Statements of Earnings $ 1,513 $ 5,026 $ 5,945 $ 8,094 GAAP effective tax rate 23.1 % 31.3 % 27.5 % 30.2 %

Additional Information (Tables)

Additional Information (Tables)	6 Months Ended
	Jun. 30, 2017
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	We made the following payments that we do not separately disclose in the Consolidated Statements of Cash Flows ($ in thousands): Three months ended June 30, Six months ended June 30, 2017 2016 2017 2016 Income tax payments $ 9,800 $ 3,551 $ 12,900 $ 3,551 Interest payments on debt 0 0 6,875 6,875 Interest payments on capital leases 19 19 40 40

Insurance Reserves (Tables)

Insurance Reserves (Tables)	6 Months Ended
	Jun. 30, 2017
Insurance [Abstract]
Liability for unpaid losses and LAE	The following table provides an analysis of changes in the liability for unpaid losses and LAE on a GAAP basis ($ in thousands): Three months ended June 30, Six months ended June 30, 2017 2016 2017 2016 Balance at Beginning of Period Unpaid losses on known claims $ 233,303 $ 236,701 $ 238,412 $ 237,660 IBNR losses 307,932 295,281 306,641 290,097 LAE 137,712 141,493 140,402 142,207 Total unpaid losses and LAE 678,947 673,475 685,455 669,965 Reinsurance recoverables (16,133 ) (17,724 ) (17,130 ) (14,694 ) Unpaid losses and LAE, net of reinsurance recoverables 662,814 655,751 668,325 655,271 Current Activity Loss and LAE incurred: Current accident year 280,356 275,687 557,400 546,854 Prior accident years (6,736 ) (12,173 ) (13,104 ) (18,056 ) Total loss and LAE incurred 273,621 263,514 544,296 528,798 Loss and LAE payments: Current accident year (163,911 ) (174,138 ) (260,780 ) (263,582 ) Prior accident years (88,850 ) (97,405 ) (268,169 ) (272,764 ) Total loss and LAE payments (252,761 ) (271,543 ) (528,948 ) (536,347 ) Balance at End of Period Unpaid losses and LAE, net of reinsurance recoverables 683,673 647,723 683,673 647,723 Add back reinsurance recoverables 17,425 18,487 17,425 18,487 Total unpaid losses and LAE 701,097 666,210 701,097 666,210 Unpaid losses on known claims 235,400 236,947 235,400 236,947 IBNR losses 323,184 290,767 323,184 290,767 LAE 142,513 138,496 142,513 138,496 Total unpaid losses and LAE $ 701,097 $ 666,210 $ 701,097 $ 666,210

Accumulated Other Comprehensi27

Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2017
Stockholders' Equity Note [Abstract]
Schedule of Other Comprehensive Income Before and After Tax	The components of other comprehensive income before and after tax are as follows ($ in thousands): Three months ended June 30, 2017 2016 Before Tax Income Tax Net Before Tax Income Tax Net Accumulated change in post-retirement benefit liability, beginning of period $ 1,020 $ (357 ) $ 663 $ 934 $ (327 ) $ 607 Effect on other comprehensive income (13 ) 4 (8 ) (11 ) 4 (7 ) Accumulated change in post-retirement benefit liability, end of period 1,007 (353 ) 655 923 (323 ) 600 Accumulated unrealized gains on investments, net, beginning of period 21,288 (7,451 ) 13,837 26,392 (9,237 ) 17,155 Other comprehensive income before reclassification 9,055 (3,169 ) 5,886 10,828 (3,790 ) 7,038 Reclassification adjustment for other-than-temporary impairments included in net income 0 0 0 198 (69 ) 129 Reclassification adjustment for realized gains included in net income (1,886 ) 660 (1,226 ) (34 ) 12 (22 ) Effect on other comprehensive income 7,169 (2,509 ) 4,660 10,992 (3,847 ) 7,144 Accumulated unrealized gains on investments, net, end of period 28,457 (9,960 ) 18,497 37,383 (13,084 ) 24,299 Accumulated other comprehensive income, beginning of period 22,308 (7,808 ) 14,500 27,326 (9,564 ) 17,762 Change in post-retirement benefit liability (13 ) 4 (8 ) (11 ) 4 (7 ) Change in unrealized gains on investments, net 7,169 (2,509 ) 4,660 10,992 (3,847 ) 7,144 Effect on other comprehensive income 7,156 (2,505 ) 4,652 10,981 (3,843 ) 7,137 Accumulated other comprehensive income, end of period $ 29,464 $ (10,312 ) $ 19,152 $ 38,306 $ (13,407 ) $ 24,899 Six months ended June 30, 2017 2016 Before Tax Income Tax Net Before Tax Income Tax Net Accumulated change in post-retirement benefit liability, beginning of period $ 1,033 $ (361 ) $ 671 $ 944 $ (331 ) $ 614 Effect on other comprehensive income (25 ) 9 (16 ) (22 ) 8 (14 ) Accumulated change in post-retirement benefit liability, end of period 1,007 (353 ) 655 923 (323 ) 600 Accumulated unrealized gains on investments, net, beginning of period 11,133 (3,896 ) 7,236 11,072 (3,875 ) 7,197 Other comprehensive income before reclassification 19,720 (6,902 ) 12,818 26,287 (9,200 ) 17,086 Reclassification adjustment for other-than-temporary impairments included in net income 10 (3 ) 6 316 (111 ) 205 Reclassification adjustment for realized gains included in net income (2,406 ) 842 (1,564 ) (291 ) 102 (189 ) Effect on other comprehensive income 17,324 (6,063 ) 11,261 26,311 (9,209 ) 17,102 Accumulated unrealized gains on investments, net, end of period 28,457 (9,960 ) 18,497 37,383 (13,084 ) 24,299 Accumulated other comprehensive income, beginning of period 12,165 (4,258 ) 7,907 12,016 (4,206 ) 7,811 Change in post-retirement benefit liability (25 ) 9 (16 ) (22 ) 8 (14 ) Change in unrealized gains on investments, net 17,324 (6,063 ) 11,261 26,311 (9,209 ) 17,102 Effect on other comprehensive income 17,299 (6,055 ) 11,244 26,290 (9,201 ) 17,088 Accumulated other comprehensive income, end of period $ 29,464 $ (10,312 ) $ 19,152 $ 38,306 $ (13,407 ) $ 24,899

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Schedule of Segment Revenues and Earnings Before Income Taxes	The following table provides revenues by segment and a reconciliation to "Total revenues" as reported on the Consolidated Statements of Earnings ($ in thousands): Three months ended June 30, Six months ended June 30, Gross written premium: 2017 2016 2017 2016 Personal Auto $ 276,928 $ 294,654 $ 601,280 $ 632,154 Commercial Auto 41,806 37,409 84,591 72,649 Classic Collector 5,056 4,898 8,621 8,126 Total gross written premium 323,790 336,961 694,491 712,929 Ceded reinsurance: Personal Auto (1,005 ) (1,000 ) (1,988 ) (2,012 ) Commercial Auto (1) 1,253 1,244 (159 ) (1,750 ) Classic Collector (209 ) (187 ) (422 ) (437 ) Total ceded reinsurance 39 57 (2,569 ) (4,199 ) Net written premium: Personal Auto 275,923 293,654 599,292 630,142 Commercial Auto 43,059 38,653 84,432 70,899 Classic Collector 4,848 4,711 8,199 7,689 Total net written premium 323,829 337,018 691,923 708,730 Change in unearned premium: Personal Auto 22,526 12,270 1,543 (20,429 ) Commercial Auto (6,208 ) (7,555 ) (12,378 ) (10,988 ) Classic Collector (1,000 ) (1,019 ) (572 ) (413 ) Total change in unearned premium 15,318 3,697 (11,407 ) (31,830 ) Earned premium: Personal Auto 298,449 305,925 600,835 609,713 Commercial Auto 36,851 31,098 72,054 59,911 Classic Collector 3,848 3,692 7,627 7,276 Total earned premium 339,147 340,715 680,516 676,899 Installment and other fee income: Personal Auto 23,558 22,851 47,706 46,023 Commercial Auto 2,903 2,534 5,705 4,880 Classic Collector 0 0 0 0 Total installment and other fee income 26,461 25,385 53,410 50,903 Net investment income 9,001 8,927 17,696 16,990 Net realized gains on investments 1,886 (164 ) 2,396 (25 ) Other income 391 220 666 478 Total revenues $ 376,886 $ 375,084 $ 754,683 $ 745,246 (1) Effective June 1, 2017, the premium paid for our excess of loss reinsurance contract for our commercial auto business is now based on earned premium rather than written premium. Premium ceded during the three and six months ended June 30, 2017 includes the return of $2.6 million of unearned premium due to the termination of the previous excess of loss contract. The following tables present the underwriting income and combined ratio on a statutory accident year basis with reconciliations to "Earnings before income taxes" as presented on the Consolidated Statements of Earnings ($ in thousands). We do not allocate assets or "Provision for income taxes" to operating segments. Three months ended June 30, 2017 Personal Auto Commercial Auto Classic Collector Total Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Statutory accident year underwriting income $ (2,384 ) 102.2 % $ 1,207 94.0 % $ (57 ) 92.6 % $ (1,235 ) 101.2 % Bad debt charge-offs 3,672 466 1 4,138 Favorable (unfavorable) development on prior accident years 9,060 (2,234 ) (90 ) 6,736 Statutory calendar year underwriting income 10,347 97.8 % (561 ) 99.0 % (146 ) 95.0 % 9,639 97.9 % Statutory-to-GAAP underwriting income differences (7,892 ) GAAP calendar year underwriting income 1,747 99.5 % Net investment income 9,001 Net realized gains on investments 1,886 Other income 391 Interest expense (3,511 ) Corporate general and administrative expenses (2,447 ) Other expenses (507 ) Earnings before income taxes $ 6,559 (1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases. Three months ended June 30, 2016 Personal Auto Commercial Auto Classic Collector Total Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Statutory accident year underwriting income $ 3,467 99.6 % $ (765 ) 97.6 % $ 28 90.6 % $ 2,730 99.4 % Bad debt charge-offs 4,334 459 7 4,800 Favorable (unfavorable) development on prior accident years 11,426 1,042 (295 ) 12,173 Statutory calendar year underwriting income 19,227 94.4 % 736 93.0 % (261 ) 98.5 % 19,703 94.4 % Statutory-to-GAAP underwriting income differences (6,280 ) GAAP calendar year underwriting income 13,422 96.1 % Net investment income 8,927 Net realized gains on investments (164 ) Other income 220 Interest expense (3,508 ) Corporate general and administrative expenses (2,060 ) Other expenses (797 ) Earnings before income taxes $ 16,040 (1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases. Six months ended June 30, 2017 Personal Auto Commercial Auto Classic Collector Total Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Statutory accident year underwriting income $ (790 ) 100.2 % $ 1,836 94.6 % $ 278 93.7 % $ 1,323 99.5 % Bad debt charge-offs 5,923 756 11 6,690 Favorable (unfavorable) development on prior accident years 16,046 (3,108 ) 166 13,104 Statutory calendar year underwriting income 21,178 96.4 % (517 ) 98.0 % 456 91.4 % 21,117 96.6 % Statutory-to-GAAP underwriting income differences (7,667 ) GAAP calendar year underwriting income 13,450 98.0 % Net investment income 17,696 Net realized gains on investments 2,396 Other income 666 Interest expense (7,023 ) Corporate general and administrative expenses (4,718 ) Other expenses (829 ) Earnings before income taxes $ 21,637 (1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases. Six months ended June 30, 2016 Personal Auto Commercial Auto Classic Collector Total Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Pre-tax Profit (Loss) Combined Ratio (1) Statutory accident year underwriting income $ 1,417 99.2 % $ (1,480 ) 99.1 % $ 818 87.0 % $ 754 99.0 % Bad debt charge-offs 7,366 813 17 8,197 Favorable (unfavorable) development on prior accident years 15,080 2,922 53 18,056 Statutory calendar year underwriting income 23,863 95.4 % 2,255 93.0 % 888 86.0 % 27,007 95.2 % Statutory-to-GAAP underwriting income differences (5,773 ) GAAP calendar year underwriting income 21,234 96.9 % Net investment income 16,990 Net realized gains on investments (25 ) Other income 478 Interest expense (7,017 ) Corporate general and administrative expenses (3,764 ) Other expenses (1,080 ) Earnings before income taxes $ 26,816 (1) Management includes the provision for uncollectible accounts in the underwriting income and combined ratio on both statutory accident year and GAAP calendar year bases.

Significant Reporting And Acc29

Significant Reporting And Accounting Policies (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017USD ($)state	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)state	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Schedule of Available-for-sale Securities [Line Items]
Number of states licensed to write insurance | state	50		50
Cash provided by (used in) operating activities	$ 30,141	$ 21,431	$ 53,679	$ 32,396
Net cash provided by (used in) financing activities	7,916	6,930	16,684	21,759
Unrealized holding gains on securities arising during period, net of tax			12,818	17,086
Installment and other fee income	$ 26,461	25,385	53,410	50,903	$ 107,400
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains on securities arising during period, net of tax			$ 13,800
Accounting Standards Update 2016-09, Statutory Tax Withholding Component
Schedule of Available-for-sale Securities [Line Items]
Cash provided by (used in) operating activities		200		200
Net cash provided by (used in) financing activities		$ 200		$ 200

Computation of Net Earnings p30

Computation of Net Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Computation of net earnings per share
Net earnings	$ 5,046	$ 11,015	$ 15,692	$ 24,362	$ 18,723
Average basic shares outstanding (shares)	11,006	11,012	11,002		11,024
Basic net earnings per share (usd per share)	$ 0.46	$ 1	$ 1.43		$ 1.70
Average diluted shares outstanding (shares)	11,082	11,096	11,105		11,115
Diluted net earnings per share (usd per share)	$ 0.46	$ 0.99	$ 1.41		$ 1.68
Restricted stock not vested
Computation of net earnings per share
Dilutive shares (shares)	36	24	34		22
Dilutive effect of Performance Share Plan
Computation of net earnings per share
Dilutive shares (shares)	41	60	68		69

Fair Value - Fair Value by Hier

Fair Value - Fair Value by Hierarchy (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 1,534,967	$ 1,483,714
Recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Long-term debt	294,100	278,700
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash and cash equivalents	87,608	92,800
Long-term debt	294,132	278,726
Fair Value | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	1,439,034	1,390,167
Fair Value | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	95,508	90,640
Fair Value | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	425	2,907
Fair Value | Recurring basis
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash and cash equivalents	87,608	92,800
Total cash and investments	$ 1,622,575	$ 1,576,514
Percentage of total cash and investments (percent)	100.00%	100.00%
Fair Value | Recurring basis | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 1,439,034	$ 1,390,167
Fair Value | Recurring basis | U.S. government
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	64,025	62,485
Fair Value | Recurring basis | State and Municipal
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	502,156	476,331
Fair Value | Recurring basis | Mortgage- Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	393,826	410,169
Fair Value | Recurring basis | Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	351,766	340,367
Fair Value | Recurring basis | Commercial
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	42,060	69,801
Fair Value | Recurring basis | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	51,775	37,608
Fair Value | Recurring basis | Corporates
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	427,252	403,575
Fair Value | Recurring basis | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	95,508	90,640
Fair Value | Recurring basis | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	425	2,907
Fair Value | Recurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash and cash equivalents	87,608	92,800
Total cash and investments	$ 247,141	$ 246,689
Percentage of total cash and investments (percent)	15.20%	15.60%
Fair Value | Recurring basis | Level 1 | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 64,025	$ 62,480
Fair Value | Recurring basis | Level 1 | U.S. government
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	64,025	62,480
Fair Value | Recurring basis | Level 1 | State and Municipal
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Mortgage- Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Commercial
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Corporates
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 1 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	95,508	90,640
Fair Value | Recurring basis | Level 1 | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	769
Fair Value | Recurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash and cash equivalents	0	0
Total cash and investments	$ 1,371,524	$ 1,324,888
Percentage of total cash and investments (percent)	84.50%	84.00%
Fair Value | Recurring basis | Level 2 | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 1,371,099	$ 1,322,749
Fair Value | Recurring basis | Level 2 | U.S. government
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	5
Fair Value | Recurring basis | Level 2 | State and Municipal
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	498,709	472,471
Fair Value | Recurring basis | Level 2 | Mortgage- Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	393,826	410,169
Fair Value | Recurring basis | Level 2 | Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	351,766	340,367
Fair Value | Recurring basis | Level 2 | Commercial
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	42,060	69,801
Fair Value | Recurring basis | Level 2 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	51,527	37,196
Fair Value | Recurring basis | Level 2 | Corporates
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	427,038	402,909
Fair Value | Recurring basis | Level 2 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 2 | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	425	2,139
Fair Value | Recurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis
Cash and cash equivalents	0	0
Total cash and investments	$ 3,910	$ 4,938
Percentage of total cash and investments (percent)	0.20%	0.30%
Fair Value | Recurring basis | Level 3 | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 3,910	$ 4,938
Fair Value | Recurring basis | Level 3 | U.S. government
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 3 | State and Municipal
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	3,447	3,860
Fair Value | Recurring basis | Level 3 | Mortgage- Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 3 | Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 3 | Commercial
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 3 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	249	412
Fair Value | Recurring basis | Level 3 | Corporates
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	215	666
Fair Value | Recurring basis | Level 3 | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	0	0
Fair Value | Recurring basis | Level 3 | Short-term investments
Fair Value, Assets and Liabilities Measured on Recurring Basis
Available-for-sale securities:	$ 0	$ 0

Fair Value - Level 3 Investment

Fair Value - Level 3 Investments (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)security	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)security	Jun. 30, 2016USD ($)
Level 3 reconciliation
Balance at beginning of period			$ 4,938	$ 1,534
Included in net earnings			(59)	3
Included in other comprehensive income			(12)	(23)
Purchases			6,259	620
Sales			(694)	0
Settlements			(591)	(408)
Transfers in			329	1,966
Transfers out	$ 6,259		$ 6,259	0
Balance at end of period		$ 3,692		3,692
Number of securities transferred into Level 3 (securities) | security			1
Level 3
Level 3 reconciliation
Balance at beginning of period	10,616	2,781
Included in net earnings	(29)	0
Included in other comprehensive income	(6)	(24)
Purchases		620
Settlements	(411)	(312)
Transfers in		628
Balance at end of period	$ 3,910	3,692	$ 3,910	3,692
Number of positions (securities) | security	5		5
Level 3 | Non-binding broker quotes
Level 3 reconciliation
Number of positions (securities) | security	2		2
Level 3 | Nationally recognized pricing service
Level 3 reconciliation
Number of positions (securities) | security	3		3
State and Municipal
Level 3 reconciliation
Balance at beginning of period			$ 3,860	10
Included in net earnings			(60)	(4)
Included in other comprehensive income			12	1
Purchases			0	0
Sales			(694)	0
Settlements			0	(10)
Transfers in			329	628
Transfers out	$ 0		0	0
Balance at end of period	3,447	626	3,447	626
State and Municipal | Level 3
Level 3 reconciliation
Balance at beginning of period	3,479	0
Included in net earnings	(29)	(4)
Included in other comprehensive income	(3)	1
Purchases		0
Settlements	0	0
Transfers in		628
Balance at end of period	3,447	626	3,447	626
Asset-backed securities
Level 3 reconciliation
Balance at beginning of period			412	0
Included in net earnings			0	0
Included in other comprehensive income			1	1
Purchases			4,259	620
Sales			0	0
Settlements			(165)	0
Transfers in			0	1,338
Transfers out	4,259		4,259	0
Balance at end of period	249	1,959	249	1,959
Asset-backed securities | Level 3
Level 3 reconciliation
Balance at beginning of period	4,584	1,338
Included in net earnings	0	0
Included in other comprehensive income	1	1
Purchases		620
Settlements	(76)	0
Transfers in		0
Balance at end of period	249	1,959	249	1,959
Corporates
Level 3 reconciliation
Balance at beginning of period			666	1,524
Included in net earnings			2	7
Included in other comprehensive income			(26)	(25)
Purchases			2,000	0
Sales			0	0
Settlements			(427)	(398)
Transfers in			0	0
Transfers out	2,000		2,000	0
Balance at end of period	215	1,107	215	1,107
Corporates | Level 3
Level 3 reconciliation
Balance at beginning of period	2,553	1,442
Included in net earnings	0	4
Included in other comprehensive income	(4)	(26)
Purchases		0
Settlements	(335)	(312)
Transfers in		0
Balance at end of period	$ 215	$ 1,107	$ 215	$ 1,107

Fair Value - Fair Value of Fina

Fair Value - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	$ 1,534,967	$ 1,483,714
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	87,608	92,800
Total cash and investments	1,622,575	1,576,514
Long-term debt	273,699	273,591
Carrying Value | Fixed Maturities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	1,439,034	1,390,167
Carrying Value | Equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	95,508	90,640
Carrying Value | Short-term investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	425	2,907
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	87,608	92,800
Total cash and investments	1,622,575	1,576,514
Long-term debt	294,132	278,726
Fair Value | Fixed Maturities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	1,439,034	1,390,167
Fair Value | Equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	95,508	90,640
Fair Value | Short-term investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities:	$ 425	$ 2,907

Investments - Textual (Details)

Investments - Textual (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of available-for-sale securities	$ 86,500	$ 100,200	$ 128,600	$ 208,800
Receivable for securities sold	0		0		$ 795
Gross realized gains	2,300	900	3,000	2,200
Gross realized losses	$ 400	$ 900	$ 600	$ 1,900

Investments - Investments by ma

Investments - Investments by major category (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fixed Maturities
Amortized Cost, Fixed Maturities	$ 1,431,815	$ 1,392,660
Fixed maturities, Fair Value	1,439,034	1,390,167
Equity Securities
Equity securities, Amortized cost	74,270	77,013
Equity securities, Fair Value	95,508	90,640
Available-for-sale securities, Amortized Cost or Cost, Total	1,506,511	1,472,582
Available-for-sale securities, Gross Unrealized Gains	35,323	22,846
Available-for-sale securities, Gross Unrealized Losses	(6,866)	(11,713)
Available-for-sale securities, Fair Value	1,534,967	1,483,714
Available-for-sale securities, OTTI Recognized in Accumulated OCI	(1,942)	(2,068)
Fixed Maturities
Fixed Maturities
Amortized Cost, Fixed Maturities	1,431,815	1,392,660
Fixed maturities, Gross Unrealized Gains	14,085	9,219
Fixed maturities, Gross Unrealized Losses	(6,866)	(11,711)
Fixed maturities, Fair Value	1,439,034	1,390,167
Fixed maturities, OTTI Recognized in Accumulated OCI	(1,942)	(2,068)
U.S. government
Fixed Maturities
Amortized Cost, Fixed Maturities	64,192	62,808
Fixed maturities, Gross Unrealized Gains	66	55
Fixed maturities, Gross Unrealized Losses	(234)	(377)
Fixed maturities, Fair Value	64,025	62,485
Fixed maturities, OTTI Recognized in Accumulated OCI	0	0
State and Municipal
Fixed Maturities
Amortized Cost, Fixed Maturities	497,850	477,834
Fixed maturities, Gross Unrealized Gains	5,085	2,313
Fixed maturities, Gross Unrealized Losses	(778)	(3,816)
Fixed maturities, Fair Value	502,156	476,331
Fixed maturities, OTTI Recognized in Accumulated OCI	(47)	(51)
Mortgage- Backed Securities
Fixed Maturities
Amortized Cost, Fixed Maturities	396,422	413,772
Fixed maturities, Gross Unrealized Gains	2,328	2,369
Fixed maturities, Gross Unrealized Losses	(4,924)	(5,972)
Fixed maturities, Fair Value	393,826	410,169
Fixed maturities, OTTI Recognized in Accumulated OCI	(1,856)	(1,967)
Residential
Fixed Maturities
Amortized Cost, Fixed Maturities	353,813	343,095
Fixed maturities, Gross Unrealized Gains	2,264	2,306
Fixed maturities, Gross Unrealized Losses	(4,311)	(5,034)
Fixed maturities, Fair Value	351,766	340,367
Fixed maturities, OTTI Recognized in Accumulated OCI	(1,856)	(1,967)
Commercial
Fixed Maturities
Amortized Cost, Fixed Maturities	42,609	70,676
Fixed maturities, Gross Unrealized Gains	65	63
Fixed maturities, Gross Unrealized Losses	(614)	(939)
Fixed maturities, Fair Value	42,060	69,801
Fixed maturities, OTTI Recognized in Accumulated OCI	0	0
Asset-backed securities
Fixed Maturities
Amortized Cost, Fixed Maturities	51,668	37,562
Fixed maturities, Gross Unrealized Gains	130	93
Fixed maturities, Gross Unrealized Losses	(22)	(47)
Fixed maturities, Fair Value	51,775	37,608
Fixed maturities, OTTI Recognized in Accumulated OCI	(8)	(8)
Corporates
Fixed Maturities
Amortized Cost, Fixed Maturities	421,684	400,685
Fixed maturities, Gross Unrealized Gains	6,476	4,389
Fixed maturities, Gross Unrealized Losses	(908)	(1,499)
Fixed maturities, Fair Value	427,252	403,575
Fixed maturities, OTTI Recognized in Accumulated OCI	(31)	(41)
Equity securities
Equity Securities
Equity securities, Amortized cost	74,270	77,013
Equity securities, Gross Unrealized Gains	21,238	13,627
Equity securities, Gross Unrealized Losses	0	0
Equity securities, Fair Value	95,508	90,640
Equity securities, OTTI Recognized in Accumulated OCI	0	0
Short-term investments
Equity Securities
Equity securities, Amortized cost	425	2,909
Equity securities, Gross Unrealized Gains	0	0
Equity securities, Gross Unrealized Losses	0	(2)
Equity securities, Fair Value	425	2,907
Equity securities, OTTI Recognized in Accumulated OCI	$ 0	$ 0

Investments - Continuous loss p

Investments - Continuous loss position investments (Details)	6 Months Ended
	Jun. 30, 2017USD ($)security	Dec. 31, 2016USD ($)security
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	646	737
Maximum
Schedule of Available-for-sale Securities [Line Items]
Percentage of book value (percent)	95.00%
Minimum
Schedule of Available-for-sale Securities [Line Items]
Unrealized loss amount	$ 100,000
Less than 12 Months
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	588	682
Less than 12 Months, Fair Value	$ 562,645,000	$ 770,019,000
Less than 12 Months, Gross Unrealized Losses	$ (6,111,000)	$ (10,861,000)
Unrealized Losses as Percentage of Cost	1.10%	1.40%
Less than 12 Months | Fixed Maturities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	587	679
Less than 12 Months, Fair Value	$ 562,220,000	$ 767,112,000
Less than 12 Months, Gross Unrealized Losses	$ (6,111,000)	$ (10,859,000)
Unrealized Losses as Percentage of Cost	1.10%	1.40%
Less than 12 Months | U.S. government
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	30	31
Less than 12 Months, Fair Value	$ 48,093,000	$ 47,640,000
Less than 12 Months, Gross Unrealized Losses	$ (233,000)	$ (377,000)
Unrealized Losses as Percentage of Cost	0.50%	0.80%
Less than 12 Months | State and Municipal
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	81	146
Less than 12 Months, Fair Value	$ 157,706,000	$ 303,428,000
Less than 12 Months, Gross Unrealized Losses	$ (713,000)	$ (3,816,000)
Unrealized Losses as Percentage of Cost	0.40%	1.20%
Less than 12 Months | Mortgage- Backed Securities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	393	395
Less than 12 Months, Fair Value	$ 249,339,000	$ 263,119,000
Less than 12 Months, Gross Unrealized Losses	$ (4,392,000)	$ (5,347,000)
Unrealized Losses as Percentage of Cost	1.70%	2.00%
Less than 12 Months | Residential
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	382	381
Less than 12 Months, Fair Value	$ 220,947,000	$ 225,117,000
Less than 12 Months, Gross Unrealized Losses	$ (3,790,000)	$ (4,559,000)
Unrealized Losses as Percentage of Cost	1.70%	2.00%
Less than 12 Months | Commercial
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	11	14
Less than 12 Months, Fair Value	$ 28,392,000	$ 38,002,000
Less than 12 Months, Gross Unrealized Losses	$ (602,000)	$ (788,000)
Unrealized Losses as Percentage of Cost	2.10%	2.00%
Less than 12 Months | Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	9	9
Less than 12 Months, Fair Value	$ 8,653,000	$ 7,836,000
Less than 12 Months, Gross Unrealized Losses	$ (17,000)	$ (46,000)
Unrealized Losses as Percentage of Cost	0.20%	0.60%
Less than 12 Months | Corporates
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	74	98
Less than 12 Months, Fair Value	$ 98,429,000	$ 145,089,000
Less than 12 Months, Gross Unrealized Losses	$ (756,000)	$ (1,272,000)
Unrealized Losses as Percentage of Cost	0.80%	0.90%
Less than 12 Months | Short-term investments
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	1	3
Less than 12 Months, Fair Value	$ 425,000	$ 2,907,000
Less than 12 Months, Gross Unrealized Losses	$ 0	$ (2,000)
Unrealized Losses as Percentage of Cost	0.00%	0.10%
12 Months or More
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	58	55
Unrealized Losses as Percentage of Cost	2.50%	1.80%
12 Months or More, Fair Value	$ 30,036,000	$ 46,693,000
12 Months of More, Gross Unrealized Losses	$ (755,000)	$ (852,000)
12 Months or More | Fixed Maturities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	58	55
Unrealized Losses as Percentage of Cost	2.50%	1.80%
12 Months or More, Fair Value	$ 30,036,000	$ 46,693,000
12 Months of More, Gross Unrealized Losses	$ (755,000)	$ (852,000)
12 Months or More | U.S. government
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	1	0
Unrealized Losses as Percentage of Cost	0.10%	0.00%
12 Months or More, Fair Value	$ 765,000	$ 0
12 Months of More, Gross Unrealized Losses	$ (1,000)	$ 0
12 Months or More | State and Municipal
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	1	0
Unrealized Losses as Percentage of Cost	1.70%	0.00%
12 Months or More, Fair Value	$ 3,743,000	$ 0
12 Months of More, Gross Unrealized Losses	$ (66,000)	$ 0
12 Months or More | Mortgage- Backed Securities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	49	47
Unrealized Losses as Percentage of Cost	2.90%	1.60%
12 Months or More, Fair Value	$ 18,098,000	$ 38,428,000
12 Months of More, Gross Unrealized Losses	$ (532,000)	$ (625,000)
12 Months or More | Residential
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	46	40
Unrealized Losses as Percentage of Cost	3.80%	3.80%
12 Months or More, Fair Value	$ 13,071,000	$ 11,891,000
12 Months of More, Gross Unrealized Losses	$ (520,000)	$ (474,000)
12 Months or More | Commercial
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	3	7
Unrealized Losses as Percentage of Cost	0.20%	0.60%
12 Months or More, Fair Value	$ 5,027,000	$ 26,537,000
12 Months of More, Gross Unrealized Losses	$ (12,000)	$ (150,000)
12 Months or More | Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	1	1
Unrealized Losses as Percentage of Cost	0.30%	0.10%
12 Months or More, Fair Value	$ 1,455,000	$ 519,000
12 Months of More, Gross Unrealized Losses	$ (5,000)	$ (1,000)
12 Months or More | Corporates
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	6	7
Unrealized Losses as Percentage of Cost	2.50%	2.80%
12 Months or More, Fair Value	$ 5,975,000	$ 7,745,000
12 Months of More, Gross Unrealized Losses	$ (152,000)	$ (227,000)
12 Months or More | Short-term investments
Schedule of Available-for-sale Securities [Line Items]
Number of Securities with Unrealized Losses (positions) | security	0	0
Unrealized Losses as Percentage of Cost	0.00%	0.00%
12 Months or More, Fair Value	$ 0	$ 0
12 Months of More, Gross Unrealized Losses	$ 0	$ 0

Investments - Summary of unreal

Investments - Summary of unrealized gains and losses (Details) - security	Jun. 30, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Number of positions held with unrealized gains (positions)	677	527
Number of positions held with unrealized losses (positions)	646	737
Number of positions held that individually exceed unrealized gains of $500,000 (positions)	2	1
Number of positions held that individually exceed unrealized losses of $500,000 (positions)	0	0
Percentage of positions held with unrealized gains that were investment grade (percent)	86.00%	85.00%
Percentage of positions held with unrealized losses that were investment grade (percent)	96.00%	97.00%
Percentage of fair value held with unrealized gains that were investment grade (percent)	87.00%	84.00%
Percentage of fair value held with unrealized losses that were investment grade (percent)	96.00%	97.00%

Investments - Unrealized losses

Investments - Unrealized losses by age and severity (Details) $ in Thousands	Jun. 30, 2017USD ($)
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	$ 592,681
Total Gross Unrealized Losses	(6,866)
Three months or less
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	203,738
Total Gross Unrealized Losses	(638)
Four months through six months
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	18,639
Total Gross Unrealized Losses	(53)
Seven months through nine months
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	249,433
Total Gross Unrealized Losses	(4,058)
Ten months through twelve months
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	96,024
Total Gross Unrealized Losses	(1,447)
Greater than twelve months
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Securities with Unrealized Losses	24,847
Total Gross Unrealized Losses	(669)
Less Than 5% as a Percentage of Amortized Cost or Cost
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(6,740)	[1]
Less Than 5% as a Percentage of Amortized Cost or Cost | Three months or less
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(638)	[1]
Less Than 5% as a Percentage of Amortized Cost or Cost | Four months through six months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(53)	[1]
Less Than 5% as a Percentage of Amortized Cost or Cost | Seven months through nine months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(4,058)	[1]
Less Than 5% as a Percentage of Amortized Cost or Cost | Ten months through twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(1,447)	[1]
Less Than 5% as a Percentage of Amortized Cost or Cost | Greater than twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(543)	[1]
5% - 10% as a Percentage of Amortized Cost or Cost
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(127)	[1]
5% - 10% as a Percentage of Amortized Cost or Cost | Three months or less
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
5% - 10% as a Percentage of Amortized Cost or Cost | Four months through six months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
5% - 10% as a Percentage of Amortized Cost or Cost | Seven months through nine months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
5% - 10% as a Percentage of Amortized Cost or Cost | Ten months through twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
5% - 10% as a Percentage of Amortized Cost or Cost | Greater than twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	(127)	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost | Three months or less
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost | Four months through six months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost | Seven months through nine months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost | Ten months through twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	0	[1]
Greater Than 10% as a Percentage of Amortized Cost or Cost | Greater than twelve months
Schedule of Available-for-sale Securities [Line Items]
Total Gross Unrealized Losses	$ 0	[1]
[1]	As a percentage of amortized cost or cost.

Investments - Change in unreali

Investments - Change in unrealized gains and losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains (losses) on securities arising during the period, pre-tax	$ 9,055	$ 10,828	$ 19,720	$ 26,287
Unrealized holding gains (losses) on securities arising during the period, tax effects			(6,902)	(9,200)
Unrealized holding gains (losses) on securities arising during period, net of tax			12,818	17,086
Realized gains on securities sold, pre-tax	(1,886)	(34)	(2,406)	(291)
Realized gains on securities sold, tax effects			842	102
Realized gains on securities sold, net of tax			(1,564)	(189)
Net impairment losses recognized in earnings	0	198	10	316
Impairment loss recognized in earnings, tax effects			(3)	(111)
Impairment loss recognized in earnings			6	205
Change in unrealized gains (losses) on marketable securities, net, pre-tax	$ 7,169	$ 10,992	17,324	26,311
Change in unrealized gains (losses) on marketable securities, net, tax effects			(6,063)	(9,209)
Change in unrealized gains (losses) on marketable securities, net, net of tax			11,261	17,102
Fixed Maturities
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains (losses) on securities arising during the period, pre-tax			9,950	25,531
Realized gains on securities sold, pre-tax			(249)	(293)
Net impairment losses recognized in earnings			10	316
Change in unrealized gains (losses) on marketable securities, net, pre-tax			9,711	25,553
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains (losses) on securities arising during the period, pre-tax			9,766	753
Unrealized holding gains (losses) on securities arising during period, net of tax			13,800
Realized gains on securities sold, pre-tax			(2,155)	0
Net impairment losses recognized in earnings			0	0
Change in unrealized gains (losses) on marketable securities, net, pre-tax			7,611	753
Short-term investments
Schedule of Available-for-sale Securities [Line Items]
Unrealized holding gains (losses) on securities arising during the period, pre-tax			3	3
Realized gains on securities sold, pre-tax			(1)	2
Net impairment losses recognized in earnings			0	0
Change in unrealized gains (losses) on marketable securities, net, pre-tax			$ 2	$ 5

Investments - Credit losses rol

Investments - Credit losses rollforward (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Credit losses on fixed maturity securities
Beginning balance	$ 557	$ 683
Additions for: Newly impaired securities	10	0
Reductions for: Securities sold and paid down	(57)	(65)
Ending balance	$ 509	$ 618

Investments - Investments by co

Investments - Investments by contractual maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
One year or less, fair value	$ 88,909
One year or less, amortized cost	88,803
After one year through five years, fair value	648,308
After one year through five years, amortized cost	643,656
After five years through ten years, fair value	248,474
After five years through ten years, amortized cost	243,611
After ten years, fair value	7,742
After ten years, amortized cost basis	7,655
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	445,602
Mortgage-backed, asset-backed and collateralized mortgage obligations, amortized cost	448,090
Fair Value, Fixed maturities	1,439,034	$ 1,390,167
Amortized Cost, Fixed Maturities	1,431,815	$ 1,392,660
Securities with Unrealized Gains
Schedule of Available-for-sale Securities [Line Items]
One year or less, fair value	36,678
After one year through five years, fair value	438,388
After five years through ten years, fair value	190,801
After ten years, fair value	1,703
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	168,056
Fair Value, Fixed maturities	835,627
Securities with Unrealized Losses
Schedule of Available-for-sale Securities [Line Items]
One year or less, fair value	41,079
After one year through five years, fair value	209,919
After five years through ten years, fair value	57,673
After ten years, fair value	6,040
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	277,545
Fair Value, Fixed maturities	592,256
Securities with No Unrealized Gains or Losses
Schedule of Available-for-sale Securities [Line Items]
One year or less, fair value	11,151
After one year through five years, fair value	0
After five years through ten years, fair value	0
After ten years, fair value	0
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	0
Fair Value, Fixed maturities	$ 11,151

Long-Term Debt - Long-term Debt

Long-Term Debt - Long-term Debt Less Unamortized Debt Issuance Costs (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2012
Debt Instrument [Line Items]
Long-term debt less unamortized debt issuance costs	$ 273,699,000	$ 273,591,000
Senior Notes | Senior Notes Due 2022
Debt Instrument [Line Items]
Principal	275,000,000	275,000,000	$ 275,000,000
Unamortized debt issuance costs	1,301,000	1,409,000
Long-term debt less unamortized debt issuance costs	$ 273,699,000	$ 273,591,000

Long-Term Debt (Details)

Long-Term Debt (Details) - USD ($)	1 Months Ended	6 Months Ended
	Aug. 31, 2014	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2012
Debt Instrument [Line Items]
Long-term debt, fair value		$ 294,132,000	$ 278,726,000
US Treasury Note
Debt Instrument [Line Items]
Term of note used (years)		10 years
Effective percentage (percent)		2.305%
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility capacity	$ 50,000,000
Term of revolving credit facility (years)	3 years
Senior Notes Due 2022 | Senior Notes
Debt Instrument [Line Items]
Principal		$ 275,000,000	$ 275,000,000	$ 275,000,000
Coupon rate (percent)				5.00%
Capitalized debt issuance costs				$ 2,200,000
Long-term debt, fair value		$ 294,100,000
10-year U.S. Treasury note | Senior Notes Due 2022 | Senior Notes
Debt Instrument [Line Items]
Basis points		1.22%

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Federal statutory income tax rate (percent)			35.00%
Income tax reconciliation
Earnings before income taxes	$ 6,559	$ 16,040	$ 21,637	$ 26,816
Income taxes at statutory rate	2,296	5,614	7,573	9,386
Dividends-received deduction	(136)	(150)	(214)	(222)
Tax-exempt interest	(616)	(619)	(1,248)	(1,258)
Other	(31)	180	(165)	188
Provision for income taxes as shown on the Consolidated Statements of Earnings	$ 1,513	$ 5,026	$ 5,945	$ 8,094
GAAP effective tax rate (percent)	23.10%	31.30%	27.50%	30.20%

Additional Information (Details

Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Supplemental Cash Flow Elements [Abstract]
Income tax payments	$ 9,800	$ 3,551	$ 12,900	$ 3,551
Interest payments on debt	0	0	6,875	6,875
Interest payments on capital leases	19	$ 19	40	$ 40
Negative cash book balances	$ 40,600		$ 40,600		$ 40,600

Insurance Reserves - Changes in

Insurance Reserves - Changes in the liability for unpaid losses and LAE (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Unpaid losses on known claims, balance at beginning of period	$ 233,303	$ 236,701	$ 238,412	$ 237,660
IBNR losses, balance at beginning of period	307,932	295,281	306,641	290,097
LAE, balance at beginning of period	137,712	141,493	140,402	142,207
Total unpaid losses and LAE, balance at beginning of period	678,947	673,475	685,455	669,965
Reinsurance recoverables, balance at beginning of period	(16,133)	(17,724)	(17,130)	(14,694)
Unpaid losses and LAE, net of reinsurance recoverables, balance at beginning of period	662,814	655,751	668,325	655,271
Loss and LAE incurred, current accident year	280,356	275,687	557,400	546,854
Loss and LAE incurred, Prior accident years	(6,736)	(12,173)	(13,104)	(18,056)
Total loss and LAE incurred	273,621	263,514	544,296	528,798
Loss and LAE payments, current accident year	(163,911)	(174,138)	(260,780)	(263,582)
Loss and LAE payments, prior accident years	(88,850)	(97,405)	(268,169)	(272,764)
Total loss and LAE payments	(252,761)	(271,543)	(528,948)	(536,347)
Unpaid losses and LAE, net of reinsurance recoverables, balance at end of period	683,673	647,723	683,673	647,723
Add back reinsurance recoverables, balance at end of period	17,425	18,487	17,425	18,487
Total unpaid losses and LAE, balance at end of period	701,097	666,210	701,097	666,210
Unpaid losses on known claims, balance at end of period	235,400	236,947	235,400	236,947
IBNR losses, balance at end of period	323,184	290,767	323,184	290,767
LAE, balance at end of period	$ 142,513	$ 138,496	$ 142,513	$ 138,496

Insurance Reserves - Narrative

Insurance Reserves - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Insurance [Abstract]
Favorable reserve development related to prior accident years	$ 6,736	$ 12,173	$ 13,104	$ 18,056

Commitments And Contingencies (

Commitments And Contingencies (Details) $ in Millions	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Jun. 30, 2017USD ($)policy	Dec. 31, 2016policy
Loss Contingencies [Line Items]
Number of policies with lowered mileage | policy			200,000	200,000
Adjustments to written premiums	$ 18.3	$ 3.8
Adjustments to earned premiums	$ 12.4
Pending Litigation | Reyes v. Infinity Indemnity Insurance Company
Loss Contingencies [Line Items]
Litigation settlement, amount			$ 30

Accumulated Other Comprehensi49

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Before Tax [Abstract]
Accumulated other comprehensive income, beginning of period	$ 22,308	$ 27,326	$ 12,165	$ 12,016
Effect on other comprehensive income	7,156	10,981	17,299	26,290
Accumulated other comprehensive income, end of period	29,464	38,306	29,464	38,306
Income Tax [Abstract]
Accumulated other comprehensive income, beginning of period	(7,808)	(9,564)	(4,258)	(4,206)
Effect on other comprehensive income	(2,505)	(3,843)	(6,055)	(9,201)
Accumulated other comprehensive income, end of period	(10,312)	(13,407)	(10,312)	(13,407)
Net [Abstract]
Accumulated other comprehensive income, beginning of period	14,500	17,762	7,907	7,811
Other comprehensive income, net of tax	4,652	7,137	11,244	17,088
Accumulated other comprehensive income, end of period	19,152	24,899	19,152	24,899
Accumulated Change Post-retirement Benefit Liability
Before Tax [Abstract]
Accumulated other comprehensive income, beginning of period	1,020	934	1,033	944
Effect on other comprehensive income	(13)	(11)	(25)	(22)
Accumulated other comprehensive income, end of period	1,007	923	1,007	923
Income Tax [Abstract]
Accumulated other comprehensive income, beginning of period	(357)	(327)	(361)	(331)
Effect on other comprehensive income	4	4	9	8
Accumulated other comprehensive income, end of period	(353)	(323)	(353)	(323)
Net [Abstract]
Accumulated other comprehensive income, beginning of period	663	607	671	614
Other comprehensive income, net of tax	(8)	(7)	(16)	(14)
Accumulated other comprehensive income, end of period	655	600	655	600
Accumulated Unrealized Gains on Investments, Net and Other-than-Temporary Impairments
Before Tax [Abstract]
Accumulated other comprehensive income, beginning of period	21,288	26,392	11,133	11,072
Effect on other comprehensive income	7,169	10,992	17,324	26,311
Other comprehensive income before reclassification	9,055	10,828	19,720	26,287
Accumulated other comprehensive income, end of period	28,457	37,383	28,457	37,383
Income Tax [Abstract]
Accumulated other comprehensive income, beginning of period	(7,451)	(9,237)	(3,896)	(3,875)
Other comprehensive income before reclassification	(3,169)	(3,790)	(6,902)	(9,200)
Effect on other comprehensive income	(2,509)	(3,847)	(6,063)	(9,209)
Accumulated other comprehensive income, end of period	(9,960)	(13,084)	(9,960)	(13,084)
Net [Abstract]
Accumulated other comprehensive income, beginning of period	13,837	17,155	7,236	7,197
Other comprehensive income before reclassification	5,886	7,038	12,818	17,086
Other comprehensive income, net of tax	4,660	7,144	11,261	17,102
Accumulated other comprehensive income, end of period	18,497	24,299	18,497	24,299
Reclassification Adjustment for Other-than-Temporary Impairments
Before Tax [Abstract]
Reclassicification adjustment	0	198	10	316
Income Tax [Abstract]
Reclassification adjustment	0	(69)	(3)	(111)
Net [Abstract]
Reclassicification adjustment	0	129	6	205
Accumulated Unrealized Gains on Investments, Net
Before Tax [Abstract]
Effect on other comprehensive income			17,324	26,311
Reclassicification adjustment	(1,886)	(34)	(2,406)	(291)
Income Tax [Abstract]
Reclassification adjustment	660	12	842	102
Effect on other comprehensive income			(6,063)	(9,209)
Net [Abstract]
Reclassicification adjustment	$ (1,226)	$ (22)	(1,564)	(189)
Other comprehensive income, net of tax			$ 11,261	$ 17,102

Segment Information - Narrative

Segment Information - Narrative (Details)	6 Months Ended
	Jun. 30, 2017vehicle / policyvehiclesegment
Segment Reporting [Abstract]
Number of operating segments | segment	3
Number of vehicles in fleet in target businesses (or fewer) | vehicle	20
Average vehicles per policy | vehicle / policy	1.9

Segment Information - Revenues

Segment Information - Revenues by segment and reconciliation to Total revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Gross written premium	$ 323,790	$ 336,961	$ 694,491	$ 712,929
Ceded reinsurance	39	57	(2,569)	(4,199)
Net written premium	323,829	337,018	691,923	708,730
Change in unearned premium	15,318	3,697	(11,407)	(31,830)
Earned premium	339,147	340,715	680,516	676,899
Installment and other fee income	26,461	25,385	53,410	50,903	$ 107,400
Net investment income	9,001	8,927	17,696	16,990
Net realized gains on investments	1,886	(164)	2,396	(25)
Other income	391	220	666	478
Total revenues	376,886	375,084	754,683	745,246
Personal Auto
Segment Reporting Information [Line Items]
Gross written premium	276,928	294,654	601,280	632,154
Ceded reinsurance	(1,005)	(1,000)	(1,988)	(2,012)
Net written premium	275,923	293,654	599,292	630,142
Change in unearned premium	22,526	12,270	1,543	(20,429)
Earned premium	298,449	305,925	600,835	609,713
Installment and other fee income	23,558	22,851	47,706	46,023
Commercial Vehicle
Segment Reporting Information [Line Items]
Gross written premium	41,806	37,409	84,591	72,649
Ceded reinsurance	1,253	1,244	(159)	(1,750)
Net written premium	43,059	38,653	84,432	70,899
Change in unearned premium	(6,208)	(7,555)	(12,378)	(10,988)
Earned premium	36,851	31,098	72,054	59,911
Installment and other fee income	2,903	2,534	5,705	4,880
Classic Collector
Segment Reporting Information [Line Items]
Gross written premium	5,056	4,898	8,621	8,126
Ceded reinsurance	(209)	(187)	(422)	(437)
Net written premium	4,848	4,711	8,199	7,689
Change in unearned premium	(1,000)	(1,019)	(572)	(413)
Earned premium	3,848	3,692	7,627	7,276
Installment and other fee income	$ 0	$ 0	$ 0	$ 0

Segment Information - Underwrit

Segment Information - Underwriting income and reconciliations to Earnings before income taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Statutory accident year underwriting income	$ (1,235)	$ 2,730	$ 1,323	$ 754
Statutory accident year underwriting income, Combined Ratio	101.20%	99.40%	99.50%	99.00%
Bad debt charge-offs	$ 4,138	$ 4,800	$ 6,690	$ 8,197
Favorable (unfavorable) development on prior accident years	6,736	12,173	13,104	18,056
Statutory calendar year underwriting income	$ 9,639	$ 19,703	$ 21,117	$ 27,007
Statutory calendar year underwriting income, Combined Ratio	97.90%	94.40%	96.60%	95.20%
Statutory-to-GAAP underwriting income differences	$ (7,892)	$ (6,280)	$ (7,667)	$ (5,773)
GAAP calendar year underwriting income	$ 1,747	$ 13,422	$ 13,450	$ 21,234
GAAP calendar year underwriting income, Combined Ratio	99.50%	96.10%	98.00%	96.90%
Net investment income	$ 9,001	$ 8,927	$ 17,696	$ 16,990
Net realized gains on investments	1,886	(164)	2,396	(25)
Other income	391	220	666	478
Interest expense	(3,511)	(3,508)	(7,023)	(7,017)
Corporate general and administrative expenses	(2,447)	(2,060)	(4,718)	(3,764)
Other expenses	(507)	(797)	(829)	(1,080)
Earnings before income taxes	6,559	16,040	21,637	26,816
Unearned premium	623,466		623,466		$ 614,347
Personal Auto
Segment Reporting Information [Line Items]
Statutory accident year underwriting income	$ (2,384)	$ 3,467	$ (790)	$ 1,417
Statutory accident year underwriting income, Combined Ratio	102.20%	99.60%	100.20%	99.20%
Bad debt charge-offs	$ 3,672	$ 4,334	$ 5,923	$ 7,366
Favorable (unfavorable) development on prior accident years	9,060	11,426	16,046	15,080
Statutory calendar year underwriting income	$ 10,347	$ 19,227	$ 21,178	$ 23,863
Statutory calendar year underwriting income, Combined Ratio	97.80%	94.40%	96.40%	95.40%
Commercial Vehicle
Segment Reporting Information [Line Items]
Statutory accident year underwriting income	$ 1,207	$ (765)	$ 1,836	$ (1,480)
Statutory accident year underwriting income, Combined Ratio	94.00%	97.60%	94.60%	99.10%
Bad debt charge-offs	$ 466	$ 459	$ 756	$ 813
Favorable (unfavorable) development on prior accident years	(2,234)	1,042	(3,108)	2,922
Statutory calendar year underwriting income	$ (561)	$ 736	$ (517)	$ 2,255
Statutory calendar year underwriting income, Combined Ratio	99.00%	93.00%	98.00%	93.00%
Unearned premium	$ 2,600		$ 2,600
Classic Collector
Segment Reporting Information [Line Items]
Statutory accident year underwriting income	$ (57)	$ 28	$ 278	$ 818
Statutory accident year underwriting income, Combined Ratio	92.60%	90.60%	93.70%	87.00%
Bad debt charge-offs	$ 1	$ 7	$ 11	$ 17
Favorable (unfavorable) development on prior accident years	(90)	(295)	166	53
Statutory calendar year underwriting income	$ (146)	$ (261)	$ 456	$ 888
Statutory calendar year underwriting income, Combined Ratio	95.00%	98.50%	91.40%	86.00%