Infinity Property & Casualty (IPCC) 10-Q 8 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	3 Months Ended
	Mar. 31, 2014	Apr. 30, 2014
Document Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Entity Registrant Name	'INFINITY PROPERTY & CASUALTY CORP	'
Entity Central Index Key	'0001195933	'
Current Fiscal Year End Date	'--03-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	11,511,817

Consolidated_Statements_Of_Ear

Consolidated Statements Of Earnings (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Revenues:	'	'
Earned premium	$327,679	$318,589
Percent change, Earned premium	2.90%	'
Installment and Other Fee Income	24,340	25,300
Increase Decrease Installment and Other Fee Income	-3.80%	'
Net investment income	8,798	8,337
Percent change, Net investment Income	5.50%	'
Net realized gains on investments	645	3,824
Percent change, Net realized gains on investments	-83.10%	'
Other income	151	51
Percent change, Other income	194.00%	'
Total revenues	361,613	356,102
Percent change, Total revenues	1.50%	'
Costs and Expenses:	'	'
Losses and loss adjustment expenses	253,702	250,371
Percent change, Losses and loss adjustment expenses	1.30%	'
Commissions and other underwriting expenses	87,973	87,674
Percent change, Commissions and other underwriting expenses	0.30%	'
Interest expense	3,453	3,538
Percent change, Interest expense	-2.40%	'
Corporate general and administrative expenses	1,526	1,737
Percent change, Corporate general and administrative expenses	-12.20%	'
Other expenses	312	677
Percent change, Other expenses	-53.90%	'
Total costs and expenses	346,966	343,997
Percent change, Total costs and expenses	0.90%	'
Earnings before income taxes	14,647	12,105
Percent change, Earnings before income taxes	21.00%	'
Provision for income taxes	4,320	3,443
Percent change, Provision for income taxes	25.50%	'
Net Earnings	10,327	8,662
Percent change, Net Earnings	19.20%	'
Net Earnings Per Common Share:	'	'
Basic (usd per share)	$0.90	$0.75
Percent change, Basic	20.00%	'
Diluted (usd per share)	$0.89	$0.74
Percent change, Diluted	20.30%	'
Average Number of Common Shares:	'	'
Basic (shares)	11,429	11,522
Percent change, Basic	-0.80%	'
Diluted (shares)	11,580	11,753
Percent change, Diluted	-1.50%	'
Cash Dividends per Common Share	$0.36	$0.30
Percent change, Cash Dividends per Common Share	20.00%	'
Net realized gains before impairment losses	672	3,896
Percent change, Net realized gains before impairment losses	-82.80%	'
Total other-than-temporary impairment (OTTI) losses	-893	-72
Non-credit portion in other comprehensive income	885	0
OTTI losses reclassified from other comprehensive income	-19	0
Net impairment losses recognized in earnings	-27	-72
Percent change, Net impairment losses recognized in earnings	-62.60%	'
Total net realized gains on investments	$645	$3,824
Percent change,Total net realized gains on investments	-83.10%	'

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]	'	'
Net earnings	$10,327	$8,662
Other comprehensive income before tax:	'	'
Net change in postretirement benefit liability	657	50
Unrealized gains on investments:	'	'
Unrealized holding gains arising during the period	7,852	2,688
Less: Reclassification adjustments for gains included in net income	-645	-3,824
Unrealized gains on investments, net	7,208	-1,136
Other comprehensive income, before tax	7,865	-1,086
Effect on other comprehensive income	-2,753	380
Other comprehensive income, net of tax	5,112	-706
Comprehensive income	$15,439	$7,956

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Investments:	'	'
Fixed maturities – at fair value (amortized cost $ 1,394,055 and $1,345,077)	$1,410,033	$1,354,305
Equity securities – at fair value (cost $77,356 and $74,718)	94,224	91,127
Short-term investments - at fair value (amortized cost $1,400 and $2,595)	1,400	2,596
Total investments	1,505,657	1,448,027
Cash and cash equivalents	84,892	134,211
Accrued investment income	12,386	12,772
Agents’ balances and premium receivable, net of allowances for doubtful accounts of $14,552 and $15,884	492,997	451,339
Property and equipment, net of accumulated depreciation of $55,801 and $53,368	50,766	48,061
Prepaid reinsurance premium	4,167	3,133
Recoverables from reinsurers (includes $76 and $77 on paid losses and LAE)	14,620	14,508
Deferred policy acquisition costs	94,707	88,258
Current and deferred income taxes	21,632	28,648
Receivable for securities sold	209	2,791
Other assets	12,237	10,242
Goodwill	75,275	75,275
Total assets	2,369,544	2,317,265
Liabilities:	'	'
Unpaid losses and loss adjustment expenses	662,890	646,577
Unearned premium	613,012	566,004
Payable to reinsurers	0	2
Long-term debt (fair value $282,266 and $272,632)	275,000	275,000
Commissions payable	18,272	19,100
Payable for securities purchased	13,641	39,887
Other liabilities	120,242	113,936
Total liabilities	1,703,057	1,660,507
Commitments and contingencies (See Note 9)	'	'
Shareholders' equity:	'	'
Common stock, no par value (50,000,000 shares authorized; 21,614,200 and 21,599,047 shares issued)	21,696	21,684
Additional paid-in capital	369,319	368,902
Retained earnings	691,199	685,011
Accumulated other comprehensive income, net of tax	21,737	16,624
Treasury stock, at cost (10,122,977 and 10,095,416 shares)	-437,463	-435,463
Total shareholders' equity	666,488	656,758
Total liabilities and shareholders' equity	$2,369,544	$2,317,265

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Fixed maturities, amortized cost	$1,394,055	$1,345,077
Equity securities, cost	77,356	74,718
Short term investments, amortized cost	1,400	2,595
Agents' balances and premium receivable, allowance for doubtful accounts	14,552	15,884
Property and equipment, accumulated depreciation	55,801	53,368
Recoverable from reinsurers, paid losses and loss adjustment expenses	76	77
Long-term debt, fair value	$282,266	$272,632
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)	21,614,200	21,599,047
Treasury stock, shares (shares)	10,122,977	10,095,416

Consolidated_Statements_Of_Cha

Consolidated Statements Of Changes In Shareholders' Equity (USD $)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss), Net Of Tax	Treasury Stock
In Thousands, unless otherwise specified
Beginning Balance at Dec. 31, 2012	$656,242	$21,529	$361,845	$666,199	$29,851	($423,181)
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net earnings	8,662	'	'	8,662	'	'
Net change in postretirement benefit liability	32	'	'	'	32	'
Change in unrealized gain on investments	-939	'	'	'	-939	'
Change in non-credit component of impairment losses on fixed maturities	200	'	'	'	200	'
Comprehensive income	7,956	'	'	'	'	'
Dividends paid to common shareholders	-3,474	'	'	-3,474	'	'
Shares issued and share-based compensation expense, including tax benefit	1,168	32	1,136	'	'	'
Acquisition of treasury stock	-3,871	'	'	'	'	-3,871
Ending Balance at Mar. 31, 2013	658,021	21,562	362,980	671,387	29,145	-427,053
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net earnings	23,971	'	'	23,971	'	'
Net change in postretirement benefit liability	556	'	'	'	556	'
Change in unrealized gain on investments	-11,786	'	'	'	-11,786	'
Change in non-credit component of impairment losses on fixed maturities	-1,291	'	'	'	-1,291	'
Comprehensive income	11,450	'	'	'	'	'
Dividends paid to common shareholders	-10,346	'	'	-10,346	'	'
Shares issued and share-based compensation expense, including tax benefit	6,044	122	5,922	'	'	'
Acquisition of treasury stock	-8,410	'	'	'	'	-8,410
Ending Balance at Dec. 31, 2013	656,758	21,684	368,902	685,011	16,624	-435,463
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net earnings	10,327	'	'	10,327	'	'
Net change in postretirement benefit liability	427	'	'	'	427	'
Change in unrealized gain on investments	5,055	'	'	'	5,055	'
Change in non-credit component of impairment losses on fixed maturities	-370	'	'	'	-370	'
Comprehensive income	15,439	'	'	'	'	'
Dividends paid to common shareholders	-4,139	'	'	-4,139	'	'
Shares issued and share-based compensation expense, including tax benefit	429	12	417	'	'	'
Acquisition of treasury stock	-2,000	'	'	'	'	-2,000
Ending Balance at Mar. 31, 2014	$666,488	$21,696	$369,319	$691,199	$21,737	($437,463)

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating Activities:	'	'
Net earnings	$10,327,000	$8,662,000
Adjustments:	'	'
Depreciation	2,540,000	2,022,000
Amortization	5,767,000	4,623,000
Net realized gains on investments	-645,000	-3,824,000
(Gain) loss on disposal of property and equipment	-27,000	1,000
Share-based compensation expense	-168,000	641,000
Excess Tax Benefit from Share-based Compensation, Operating Activities	56,000	50,000
Activity related to rabbi trust	18,000	37,000
Decrease (increase) in accrued investment income	386,000	100,000
Decrease (increase) in agents’ balances and premium receivable	-41,657,000	-38,967,000
Decrease (increase) in reinsurance receivables	-1,146,000	-1,329,000
Decrease (increase) in deferred policy acquisition costs	-6,449,000	-7,841,000
Decrease (increase) in other assets	2,555,000	1,847,000
Increase (decrease) in unpaid losses and loss adjustment expenses	16,313,000	23,906,000
Increase (decrease) in unearned premium	47,008,000	54,514,000
Increase (decrease) in payable to reinsurers	-2,000	-137,000
Increase (decrease) in other liabilities	5,555,000	-2,708,000
Net cash provided by operating activities	40,318,000	41,497,000
Investing Activities:	'	'
Purchases of fixed maturities	-183,528,000	-306,431,000
Purchases of equity securities	-2,600,000	0
Purchases of short-term investments	-200,000	0
Purchases of property and equipment	-5,249,000	-1,768,000
Maturities and redemptions of fixed maturities	41,201,000	46,154,000
Proceeds from Maturities, Prepayments and Calls of Short-term Investments	1,400,000	0
Proceeds from sale of fixed maturities	64,959,000	192,730,000
Proceeds from sale of equity securities	0	3,519,000
Proceeds from Sale of Property, Plant, and Equipment	30,000	0
Net cash used in investing activities	-83,986,000	-65,796,000
Financing Activities:	'	'
Proceeds from stock options exercised and employee stock purchases	541,000	477,000
Excess Tax Benefit from Share-based Compensation, Financing Activities	56,000	50,000
Principal payments under capital lease obligation	-134,000	-305,000
Acquisition of treasury stock	-1,975,000	-3,990,000
Dividends paid to shareholders	-4,139,000	-3,474,000
Net cash used in financing activities	-5,650,000	-7,242,000
Net decrease in cash and cash equivalents	-49,319,000	-31,541,000
Cash and cash equivalents at beginning of period	134,211,000	165,182,000
Cash and cash equivalents at end of period	$84,892,000	$133,641,000

Reporting_And_Accounting_Polic

Reporting And Accounting Policies	3 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Reporting And Accounting Policies	'
	Reporting and Accounting Policies
	Nature of Operations
	We are a holding company that, through subsidiaries, provides personal automobile insurance with a concentration on nonstandard auto insurance. 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 for the year ended December 31, 2013. 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 match expenses with their related revenue streams and the elimination of all significant inter-company transactions and balances.
	We revised the presentation of our Consolidated Statements of Earnings for the three months ended March 31, 2013 to correctly classify $25.3 million of installment and other fee income as a component of total revenues and to conform to our current-year presentation. Previously, installment and other fee income was presented net within our commissions and other underwriting expenses, which was not in compliance with GAAP, thereby understating both total revenues and total expenses by an equivalent amount. This revision is not considered to be material to previously issued financial statements since it has no effect on the results of operations, financial condition or cash flows in any period presented or in any previously issued financial statements.
	We have evaluated events that occurred after March 31, 2014 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.

Computation_Of_Earnings_Per_Sh

Computation Of Earnings Per Share	3 Months Ended
	Mar. 31, 2014
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 March 31,
		2014		2013
	Net earnings	$	10,327	$	8,662
	Average basic shares outstanding	11,429		11,522
	Basic net earnings per share	$	0.9	$	0.75
	Average basic shares outstanding	11,429		11,522
	Restricted stock not yet vested	57		42
	Dilutive effect of assumed option exercises	2		36
	Dilutive effect of Performance Share Plan	92		152
	Average diluted shares outstanding	11,580		11,753
	Diluted net earnings per share	$	0.89	$	0.74

Fair_Value

Fair Value	3 Months Ended
	Mar. 31, 2014
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
	March 31, 2014		Level 1				Level 2				Level 3				Total
	Cash and cash equivalents		$	84,892			$	0			$	0			$	84,892
	Fixed maturity securities:
	U.S. government		65,081				129				0				65,210
	State and municipal		0				499,088				0				499,088
	Mortgage-backed securities:
	Residential		0				347,260				0				347,260
	Commercial		0				34,487				0				34,487
	Total mortgage-backed securities		$	0			$	381,747			$	0			$	381,747
	Asset-backed securities		0				67,352				530				67,882
	Corporates		0				391,053				5,054				396,107
	Total fixed maturities		$	65,081			$	1,339,369			$	5,583			$	1,410,033
	Equity securities		94,224				0				0				94,224
	Short-term investments		1,400				0				0				1,400
	Total cash and investments		$	245,597			$	1,339,369			$	5,583			$	1,590,549
	Percentage of total cash and investments		15.4		%		84.2		%		0.4		%		100		%
			Fair Value
	December 31, 2013		Level 1				Level 2				Level 3				Total
	Cash and cash equivalents		$	134,211			$	0			$	0			$	134,211
	Fixed maturity securities:
	U.S. government		64,496				171				0				64,666
	State and municipal		0				487,111				0				487,111
	Mortgage-backed securities:
	Residential		0				323,346				0				323,346
	Commercial		0				35,816				0				35,816
	Total mortgage-backed securities		$	0			$	359,162			$	0			$	359,162
	Collateralized mortgage obligations		0				1,291				0				1,291
	Asset-backed securities		0				70,573				686				71,259
	Corporates		0				365,642				5,175				370,816
	Total fixed maturities		$	64,496			$	1,283,949			$	5,860			$	1,354,305
	Equity securities		91,127				0				0				91,127
	Short-term investments		1,200				1,396				0				2,596
	Total cash and investments		$	291,033			$	1,285,345			$	5,860			$	1,582,238
	Percentage of total cash and investments		18.4		%		81.2		%		0.4		%		100		%
	We do not report our long-term debt at fair value in the Consolidated Balance Sheets. The $282.3 million and $272.6 million fair value of our long-term debt at March 31, 2014 and December 31, 2013, 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 invested 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. 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 March 31, 2014
		U.S.				Corporates				Asset-Backed Securities				Total
		Government
	Balance at beginning of period	$	0			$	5,175			$	686			$	5,860
	Total gains or (losses), unrealized or realized
	Included in net earnings	0				9				0				9
	Included in other comprehensive income	0				(56		)		0				(56		)
	Settlements	0				(74		)		(156		)		(230		)
	Balance at end of period	$	0			$	5,054			$	530			$	5,583
		Three months ended March 31, 2013
		U.S.				Corporates				Asset-Backed Securities				Total
		Government
	Balance at beginning of period	$	3,712			$	9,101			$	0			$	12,813
	Total gains or (losses), unrealized or realized
	Included in net earnings	(23		)		122				0				99
	Included in other comprehensive income	(89		)		(113		)		0				(202		)
	Settlements	(485		)		(211		)		0				(697		)
	Balance at end of period	$	3,115			$	8,899			$	0			$	12,014
Of the $5.6 million fair value of securities in Level 3 at March 31, 2014, which consists of nine securities, we priced six based on non-binding broker quotes, one price was provided by our unaffiliated money manager and one security, which was included in Level 3 because it was not rated by a nationally recognized statistical rating organization, was priced by a nationally recognized pricing service. We manually calculated the remaining one security, which had a fair value of $0.1 million.
Quantitative information about the significant unobservable inputs used in the fair value measurement of the manually priced security at March 31, 2014 is as follows (in millions):
	Fair Value				Valuation Technique		Unobservable Input		Value Used
Corporate bond	$	0.1			Recovery rate1		Probability of default		100%
1 Recovery rate for senior unsecured bonds as indicated in Moody's Investor's Service Annual Default Study: Corporate Default and Recovery Rates, 1920-2013.
The significant unobservable inputs used in the fair value measurement of our manually-priced corporate bond are a probability of default assumption and an assigned credit rating. Significant changes in either of these inputs in isolation could result in a significant change in fair value measurement for this corporate bond.  Generally, a reduction in probability of default would increase security valuation. A change in the credit rating assumption would change the yield spread associated with that bond, and thus the yield used in discounting the cash flows to arrive at the security’s valuation.
There were no transfers between Levels 1, 2 or 3 during either the three months ended March 31, 2014 or the three months ended March 31, 2013.
The gains or losses included in net earnings are included in the line item "Net realized (losses) gains 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 (losses) 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):
	March 31, 2014								December 31, 2013
	Carrying				Fair				Carrying				Fair
	Value				Value				Value				Value
Assets:
Cash and cash equivalents	$	84,892			$	84,892			$	134,211			$	134,211
Investments
Fixed maturities	1,410,033				1,410,033				1,354,305				1,354,305
Equity securities	94,224				94,224				91,127				91,127
Short-term	1,400				1,400				2,596				2,596
Total cash and investments	$	1,590,549			$	1,590,549			$	1,582,238			$	1,582,238
Liabilities:
Long-term debt	$	275,000			$	282,266			$	275,000			$	272,632
See Note 4 to the Consolidated Financial Statements for additional information on investments and Note 5 to the Consolidated Financial Statements for additional information on long-term debt.

Investments

Investments	3 Months Ended
	Mar. 31, 2014
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 months ended March 31, 2014 and the three months ended March 31, 2013 were $65.0 million and $196.2 million, respectively. The proceeds for the three months ended March 31, 2014 were net of $0.2 million of receivable for securities sold during the first quarter of 2014 that had not settled at March 31, 2014. The proceeds for the three months ended March 31, 2013 were net of $2.8 million of receivable for securities sold during the first quarter of 2013 that had not settled at March 31, 2013.
	Gross gains of $0.8 million and gross losses of $0.1 million were realized on sales of available for sale securities during the three months ended March 31, 2014 compared with gross gains of $4.3 million and gross losses of $0.4 million realized on sales during the three months ended March 31, 2013. 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):
		March 31, 2014
		Amortized				Gross				Gross				Fair Value			OTTI
		Cost or Cost				Unrealized				Unrealized							Recognized in
						Gains				Losses							Accumulated
																	OCI(1)
	Fixed maturities:
	U.S. government	$	64,771			$	820			$	(381	)		$	65,210		$	0
	State and municipal	488,609				11,220				(741		)		499,088			(87		)
	Mortgage-backed securities:
	Residential	350,772				2,693				(6,205		)		347,260			(3,232		)
	Commercial	34,421				297				(230		)		34,487			0
	Total mortgage-backed securities	$	385,193			$	2,990			$	(6,435	)		$	381,747		$	(3,232	)
	Asset-backed securities	67,737				221				(76		)		67,882			(8		)
	Corporates	387,745				9,713				(1,352		)		396,107			(531		)
	Total fixed maturities	$	1,394,055			$	24,963			$	(8,986	)		$	1,410,033		$	(3,858	)
	Equity securities	77,356				16,868				0				94,224			0
	Short-term investments	1,400				0				0				1,400			0
	Total	$	1,472,812			$	41,831			$	(8,986	)		$	1,505,657		$	(3,858	)
		December 31, 2013
		Amortized				Gross				Gross				Fair Value			OTTI
		Cost or Cost				Unrealized				Unrealized							Recognized in
						Gains				Losses							Accumulated
																	OCI(1)
	Fixed maturities:
	U.S. government	$	64,194			$	900			$	(427	)		$	64,666		$	0
	State and municipal	478,092				10,789				(1,771		)		487,111			(73		)
	Mortgage-backed securities:
	Residential	330,169				1,985				(8,809		)		323,346			(2,435		)
	Commercial	35,781				339				(304		)		35,816			0
	Total mortgage-backed securities	$	365,950			$	2,324			$	(9,113	)		$	359,162		$	(2,435	)
	Collateralized mortgage obligations	1,228				63				0				1,291			(161		)
	Asset-backed securities	71,183				178				(103		)		71,259			(8		)
	Corporates	364,430				9,086				(2,700		)		370,816			(612		)
	Total fixed maturities	$	1,345,077			$	23,340			$	(14,112	)		$	1,354,305		$	(3,290	)
	Equity securities	74,718				16,409				0				91,127			0
	Short-term investments	2,595				1				0				2,596			0
	Total	$	1,422,390			$	39,750			$	(14,112	)		$	1,448,027		$	(3,290	)
	(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
		Number of		Fair				Gross				Unrealized			Number of		Fair			Gross				Unrealized
		Securities		Value				Unrealized				Losses as			Securities		Value			Unrealized				Losses as
		with						Losses				% of Cost			with					Losses				% of Cost
		Unrealized													Unrealized
		Losses													Losses
	31-Mar-14
	Fixed maturities:
	U.S. government	12		$	27,125			$	(381	)		1.4	%		0		$	0		$	0			0	%
	State and municipal	34		71,836				(484		)		0.7	%		5		10,469			(257		)		2.4	%
	Mortgage-backed securities:
	Residential	187		173,264				(4,711		)		2.6	%		46		46,299			(1,493		)		3.1	%
	Commercial	6		9,192				(152		)		1.6	%		5		9,773			(78		)		0.8	%
	Total mortgage-backed securities	193		$	182,456			$	(4,864	)		2.6	%		51		$	56,071		$	(1,571	)		2.7	%
	Asset-backed securities	18		13,567				(76		)		0.6	%		0		0			0				0	%
	Corporates	69		96,334				(1,263		)		1.3	%		2		2,483			(89		)		3.5	%
	Total fixed maturities	326		$	391,318			$	(7,068	)		1.8	%		58		$	69,024		$	(1,917	)		2.7	%
	Equity securities	0		0				0				0	%		0		0			0				0	%
	Short-term investments	0		0				0				0	%		0		0			0				0	%
	Total	326		$	391,318			$	(7,068	)		1.8	%		58		$	69,024		$	(1,917	)		2.7	%
	Less than 12 Months														12 Months or More
	Number of			Fair				Gross				Unrealized			Number of		Fair			Gross				Unrealized
	Securities			Value				Unrealized				Losses as			Securities		Value			Unrealized				Losses as
	with							Losses				% of Cost			with					Losses				% of Cost
	Unrealized														Unrealized
	Losses														Losses
December 31, 2013
Fixed maturities:
U.S. government	11			$	26,396			$	(427	)		1.6	%		0		$	0		$	0			0	%
State and municipal	51			121,431				(1,425		)		1.2	%		4		8,062			(346		)		4.1	%
Mortgage-backed securities:
Residential	229			207,821				(7,064		)		3.3	%		34		39,659			(1,744		)		4.2	%
Commercial	11			22,311				(290		)		1.3	%		1		756			(14		)		1.8	%
Total mortgage-backed securities	240			$	230,133			$	(7,354	)		3.1	%		35		$	40,415		$	(1,758	)		4.2	%
Asset-backed securities	18			14,738				(103		)		0.7	%		0		0			0				0	%
Corporates	90			115,735				(2,621		)		2.2	%		1		1,212			(79		)		6.1	%
Total fixed maturities	410			$	508,432			$	(11,929	)		2.3	%		40		$	49,688		$	(2,183	)		4.2	%
Equity securities	0			0				0				0	%		0		0			0				0	%
Short-term investments	0			0				0				0	%		0		0			0				0	%
Total	410			$	508,432			$	(11,929	)		2.3	%		40		$	49,688		$	(2,183	)		4.2	%
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:
•	the intent to sell the security;
•	whether it is more likely than not that there will be a requirement to sell the security before our anticipated recovery;
•	whether the unrealized loss is credit-driven or a result of changes in market interest rates;
•	the length of time the security’s fair value has been below our cost;
•	the extent to which fair value is less than cost basis;
•	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 any of the following: a fair value of less than 95% of its book value, an unrealized loss that equals or exceeds $100,000 or one or more impairment charges recorded in the past. In addition, we review positions held related to an issuer of a previously impaired security.
The following table summarizes those securities, excluding the rabbi trust, with unrealized gains or losses:
	March 31,			December 31,
	2014			2013
Number of positions held with unrealized:
Gains	710			590
Losses	384			450
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	85	%		81	%
Losses that were investment grade	94	%		93	%
Percentage of fair value held with unrealized:
Gains that were investment grade	89	%		88	%
Losses that were investment grade	94	%		95	%
The following table sets forth the amount of unrealized loss, excluding the rabbi trust, by age and severity at March 31, 2014 (in thousands):
Age of Unrealized Losses:	Fair Value of				Total Gross				Less Than 5%*				5% - 10%*			Greater
	Securities with				Unrealized											Than 10%*
	Unrealized				Losses
	Losses
Three months or less	$	141,568			$	(468	)		$	(468	)		$	0		$	0
Four months through six months	34,866				(423		)		(423		)		0			0
Seven months through nine months	1,307				(23		)		(23		)		0			0
Ten months through twelve months	222,096				(6,324		)		(3,863		)		(2,462		)	0
Greater than twelve months	60,505				(1,747		)		(1,229		)		(518		)	0
Total	$	460,341			$	(8,986	)		$	(6,006	)		$	(2,980	)	$	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
	Fixed				Equity				Short-Term Investments				Tax			Net
	Maturities				Securities								Effects
Three months ended March 31, 2014
Unrealized holding gains (losses) on securities arising during the period	$	7,389			$	458			$	5			$	(2,748	)	$	5,104
Realized (gains) losses on securities sold	(666		)		0				(5		)		235			(437		)
Impairment loss recognized in earnings	27				0				0				(9		)	17
Change in unrealized gains (losses) on marketable securities, net	$	6,750			$	458			$	(1	)		$	(2,523	)	$	4,685
Three months ended March 31, 2013
Unrealized holding gains (losses) on securities arising during the period	$	(1,485	)		$	4,173			$	0			$	(941	)	$	1,747
Realized (gains) losses on securities sold	(3,522		)		(373		)		0				1,363			(2,532		)
Impairment loss recognized in earnings	72				0				0				(25		)	47
Change in unrealized gains (losses) on marketable securities, net	$	(4,936	)		$	3,800			$	0			$	398		$	(738	)
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 of amortized cost, we separate the amount of the impairment 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 (1) the effective interest rate implicit at the date of acquisition for non-structured securities or (2) 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, we treat the entire amount of the impairment as a credit loss.
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):
	Three months ended March 31,
	2014				2013
Beginning balance	$	956			$	487
Additions for:
Previously impaired securities	19				0
Newly impaired securities	8				0
Reductions for:
Securities sold and paid down	(40		)		(40		)
Ending balance	$	943			$	447
The table below sets forth the scheduled maturities of fixed maturity securities at March 31, 2014, 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				Securities				Securities				All Fixed			All Fixed
	with				with				with No				Maturity			Maturity
	Unrealized				Unrealized				Unrealized				Securities			Securities
	Gains				Losses				Gains or
									Losses
One year or less	$	62,289			$	3,312			$	2,325			$	67,925		$	67,275
After one year through five years	486,673				122,265				1,670				610,608			597,570
After five years through ten years	184,061				80,145				60				264,265			259,349
After ten years	15,080				2,526				0				17,606			16,931
Mortgage-backed and asset-backed securities	197,535				252,094				0				449,629			452,930
Total	$	945,637			$	460,341			$	4,055			$	1,410,033		$	1,394,055

LongTerm_Debt

Long-Term Debt	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Long-Term Debt	'
	Long-Term Debt
	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 March 31, 2014 fair value of $282.3 million using a 190 basis point spread to the ten-year U.S. Treasury Note of 2.72%.
	In August 2011, 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. At March 31, 2014, there were no borrowings outstanding under the Credit Agreement.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
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 March 31,
		2014			2013
	Earnings before income taxes	$	14,647		$	12,105
	Income taxes at statutory rate	5,126			4,237
	Effect of:
	Dividends-received deduction	(107		)	(49		)
	Tax-exempt interest	(702		)	(750		)
	Other	3			5
	Provision for income taxes as shown on the Consolidated Statements of Earnings	$	4,320		$	3,443
	GAAP effective tax rate	29.5		%	28.4		%

Additional_Information

Additional Information	3 Months Ended
	Mar. 31, 2014
Disclosure Text Block Supplement [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 March 31,
		2014		2013
	Income tax payments	$	0	$	0
	Interest payments on debt	6,875		6,951
	Negative Cash Book Balances
	Negative cash book balances, included in the line item “Other liabilities” in the Consolidated Balance Sheets, were $58.7 million and $50.5 million, respectively, at March 31, 2014 and December 31, 2013.

Insurance_Reserves

Insurance Reserves	3 Months Ended
	Mar. 31, 2014
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 March 31,
		2014			2013
	Balance at Beginning of Period
	Unpaid losses on known claims	$	221,447		$	205,589
	IBNR losses	262,660			218,552
	LAE	162,469			148,753
	Total unpaid losses and LAE	646,577			572,894
	Reinsurance recoverables	(14,431		)	(13,678		)
	Unpaid losses and LAE, net of reinsurance recoverables	632,146			559,215
	Current Activity
	Loss and LAE incurred:
	Current accident year	256,776			250,499
	Prior accident years	(3,074		)	(128		)
	Total loss and LAE incurred	253,702			250,371
	Loss and LAE payments:
	Current accident year	(80,818		)	(77,856		)
	Prior accident years	(156,683		)	(148,723		)
	Total loss and LAE payments	(237,502		)	(226,578		)
	Balance at End of Period
	Unpaid losses and LAE, net of reinsurance recoverables	648,346			583,008
	Add back reinsurance recoverables	14,544			13,793
	Total unpaid losses and LAE	$	662,890		$	596,800
	Unpaid losses on known claims	$	226,659		$	218,835
	IBNR losses	272,159			223,898
	LAE	164,072			154,068
	Total unpaid losses and LAE	$	662,890		$	596,800
	The $3.1 million of favorable reserve development during the three months ended March 31, 2014 was primarily due to a decrease in frequency in accident year 2013 in Florida personal injury protection and material damage coverages in the states of California, Georgia and Pennsylvania.

Commitments_And_Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Commitments
	There have been no material changes from the commitments discussed in the Form 10-K for the year ended December 31, 2013. For a description of our previously reported commitments, refer to Note 14 Commitments and Contingencies in the Form 10-K for the year ended December 31, 2013.
	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 or “bad faith” 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 FASC. 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. If a material loss, while not probable, is judged to be reasonably possible we will disclose the nature of the contingency and a possible range of loss if estimable.
	In Estate of Jorge Luis Arroyo, Jr., et al. v. Gustavo M. Rodriguez, et al (Circuit Court of Miami-Dade County, Florida), 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 plaintiff. Infinity believes any claims of bad faith are unfounded and has denied any and all liability to plaintiff. While the outcome of this case, as with litigation generally, cannot be predicted with certainty, at this stage of the litigation we do not believe that the likelihood of a material loss is probable.
	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, 2013.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2014
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 March 31,
		2014									2013
		Before Tax			Income Tax			Net			Before Tax			Income Tax			Net
	Accumulated change in postretirement benefit liability, beginning of period	$	(62	)	$	22		$	(40	)	$	(967	)	$	339		$	(629	)
	Effect on other comprehensive income	657			(230		)	427			50			(17		)	32
	Accumulated change in postretirement benefit liability, end of period	$	595		$	(208	)	$	387		$	(918	)	$	321		$	(596	)
	Accumulated unrealized gains on investments, net, beginning of period	$	25,638		$	(8,973	)	$	16,665		$	46,892		$	(16,412	)	$	30,480
	Other comprehensive income before reclassification	7,852			(2,748		)	5,104			2,688			(941		)	1,747
	Reclassification adjustment for other-than-temporary impairments included in net income	27			(9		)	17			72			(25		)	47
	Reclassification adjustment for realized gains included in net income	(672		)	235			(437		)	(3,896		)	1,363			(2,532		)
	Effect on other comprehensive income	7,208			(2,523		)	4,685			(1,136		)	398			(738		)
	Accumulated unrealized gains on investments, net, end of period	$	32,846		$	(11,496	)	$	21,350		$	45,756		$	(16,015	)	$	29,741
	Accumulated other comprehensive income, beginning of period	$	25,576		$	(8,952	)	$	16,624		$	45,924		$	(16,073	)	$	29,851
	Change in postretirement benefit liability	657			(230		)	427			50			(17		)	32
	Change in unrealized gains on investments, net	7,208			(2,523		)	4,685			(1,136		)	398			(738		)
	Effect on other comprehensive income	7,865			(2,753		)	5,112			(1,086		)	380			(706		)
	Accumulated other comprehensive income, end of period	$	33,441		$	(11,704	)	$	21,737		$	44,838		$	(15,693	)	$	29,145

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2014
Subsequent Events [Abstract]	'
Subsequent Event	'
	Subsequent Events
	In April 2014, we purchased a 62,808 square foot warehouse and training facility building in Birmingham, Alabama for $3.5 million to replace certain leased facilities.

Reporting_And_Accounting_Polic1

Reporting And Accounting Policies Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Basis of reporting	'
	The accompanying consolidated financial statements are unaudited and should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2013. 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 match expenses with their related revenue streams and the elimination of all significant inter-company transactions and balances.
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.

Computation_Of_Earnings_Per_Sh1

Computation Of Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
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 March 31,
		2014		2013
	Net earnings	$	10,327	$	8,662
	Average basic shares outstanding	11,429		11,522
	Basic net earnings per share	$	0.9	$	0.75
	Average basic shares outstanding	11,429		11,522
	Restricted stock not yet vested	57		42
	Dilutive effect of assumed option exercises	2		36
	Dilutive effect of Performance Share Plan	92		152
	Average diluted shares outstanding	11,580		11,753
	Diluted net earnings per share	$	0.89	$	0.74

Fair_Value_Tables

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2014
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
	March 31, 2014		Level 1				Level 2				Level 3				Total
	Cash and cash equivalents		$	84,892			$	0			$	0			$	84,892
	Fixed maturity securities:
	U.S. government		65,081				129				0				65,210
	State and municipal		0				499,088				0				499,088
	Mortgage-backed securities:
	Residential		0				347,260				0				347,260
	Commercial		0				34,487				0				34,487
	Total mortgage-backed securities		$	0			$	381,747			$	0			$	381,747
	Asset-backed securities		0				67,352				530				67,882
	Corporates		0				391,053				5,054				396,107
	Total fixed maturities		$	65,081			$	1,339,369			$	5,583			$	1,410,033
	Equity securities		94,224				0				0				94,224
	Short-term investments		1,400				0				0				1,400
	Total cash and investments		$	245,597			$	1,339,369			$	5,583			$	1,590,549
	Percentage of total cash and investments		15.4		%		84.2		%		0.4		%		100		%
			Fair Value
	December 31, 2013		Level 1				Level 2				Level 3				Total
	Cash and cash equivalents		$	134,211			$	0			$	0			$	134,211
	Fixed maturity securities:
	U.S. government		64,496				171				0				64,666
	State and municipal		0				487,111				0				487,111
	Mortgage-backed securities:
	Residential		0				323,346				0				323,346
	Commercial		0				35,816				0				35,816
	Total mortgage-backed securities		$	0			$	359,162			$	0			$	359,162
	Collateralized mortgage obligations		0				1,291				0				1,291
	Asset-backed securities		0				70,573				686				71,259
	Corporates		0				365,642				5,175				370,816
	Total fixed maturities		$	64,496			$	1,283,949			$	5,860			$	1,354,305
	Equity securities		91,127				0				0				91,127
	Short-term investments		1,200				1,396				0				2,596
	Total cash and investments		$	291,033			$	1,285,345			$	5,860			$	1,582,238
	Percentage of total cash and investments		18.4		%		81.2		%		0.4		%		100		%
Fair value level 3 reconciliation	'
	The following tables present the progression in the Level 3 fair value category (in thousands):
		Three months ended March 31, 2014
		U.S.				Corporates				Asset-Backed Securities				Total
		Government
	Balance at beginning of period	$	0			$	5,175			$	686			$	5,860
	Total gains or (losses), unrealized or realized
	Included in net earnings	0				9				0				9
	Included in other comprehensive income	0				(56		)		0				(56		)
	Settlements	0				(74		)		(156		)		(230		)
	Balance at end of period	$	0			$	5,054			$	530			$	5,583
		Three months ended March 31, 2013
		U.S.				Corporates				Asset-Backed Securities				Total
		Government
	Balance at beginning of period	$	3,712			$	9,101			$	0			$	12,813
	Total gains or (losses), unrealized or realized
	Included in net earnings	(23		)		122				0				99
	Included in other comprehensive income	(89		)		(113		)		0				(202		)
	Settlements	(485		)		(211		)		0				(697		)
	Balance at end of period	$	3,115			$	8,899			$	0			$	12,014
Quantitative information about inputs of manually priced securities	'
	Quantitative information about the significant unobservable inputs used in the fair value measurement of the manually priced security at March 31, 2014 is as follows (in millions):
		Fair Value				Valuation Technique		Unobservable Input		Value Used
	Corporate bond	$	0.1			Recovery rate1		Probability of default		100%
	1 Recovery rate for senior unsecured bonds as indicated in Moody's Investor's Service Annual Default Study: Corporate Default and Recovery Rates, 1920-2013.
Carrying Value and Estimated Fair Value	'
	The following table presents the carrying value and estimated fair value of our financial instruments (in thousands):
		March 31, 2014								December 31, 2013
		Carrying				Fair				Carrying				Fair
		Value				Value				Value				Value
	Assets:
	Cash and cash equivalents	$	84,892			$	84,892			$	134,211			$	134,211
	Investments
	Fixed maturities	1,410,033				1,410,033				1,354,305				1,354,305
	Equity securities	94,224				94,224				91,127				91,127
	Short-term	1,400				1,400				2,596				2,596
	Total cash and investments	$	1,590,549			$	1,590,549			$	1,582,238			$	1,582,238
	Liabilities:
	Long-term debt	$	275,000			$	282,266			$	275,000			$	272,632

Investments_Tables

Investments (Tables)	3 Months Ended
	Mar. 31, 2014
Investments, Debt and Equity Securities [Abstract]	'
Summarized information of investment portfolio	'
	Summarized information for the major categories of our investment portfolio follows (in thousands):
		March 31, 2014
		Amortized				Gross				Gross				Fair Value			OTTI
		Cost or Cost				Unrealized				Unrealized							Recognized in
						Gains				Losses							Accumulated
																	OCI(1)
	Fixed maturities:
	U.S. government	$	64,771			$	820			$	(381	)		$	65,210		$	0
	State and municipal	488,609				11,220				(741		)		499,088			(87		)
	Mortgage-backed securities:
	Residential	350,772				2,693				(6,205		)		347,260			(3,232		)
	Commercial	34,421				297				(230		)		34,487			0
	Total mortgage-backed securities	$	385,193			$	2,990			$	(6,435	)		$	381,747		$	(3,232	)
	Asset-backed securities	67,737				221				(76		)		67,882			(8		)
	Corporates	387,745				9,713				(1,352		)		396,107			(531		)
	Total fixed maturities	$	1,394,055			$	24,963			$	(8,986	)		$	1,410,033		$	(3,858	)
	Equity securities	77,356				16,868				0				94,224			0
	Short-term investments	1,400				0				0				1,400			0
	Total	$	1,472,812			$	41,831			$	(8,986	)		$	1,505,657		$	(3,858	)
		December 31, 2013
		Amortized				Gross				Gross				Fair Value			OTTI
		Cost or Cost				Unrealized				Unrealized							Recognized in
						Gains				Losses							Accumulated
																	OCI(1)
	Fixed maturities:
	U.S. government	$	64,194			$	900			$	(427	)		$	64,666		$	0
	State and municipal	478,092				10,789				(1,771		)		487,111			(73		)
	Mortgage-backed securities:
	Residential	330,169				1,985				(8,809		)		323,346			(2,435		)
	Commercial	35,781				339				(304		)		35,816			0
	Total mortgage-backed securities	$	365,950			$	2,324			$	(9,113	)		$	359,162		$	(2,435	)
	Collateralized mortgage obligations	1,228				63				0				1,291			(161		)
	Asset-backed securities	71,183				178				(103		)		71,259			(8		)
	Corporates	364,430				9,086				(2,700		)		370,816			(612		)
	Total fixed maturities	$	1,345,077			$	23,340			$	(14,112	)		$	1,354,305		$	(3,290	)
	Equity securities	74,718				16,409				0				91,127			0
	Short-term investments	2,595				1				0				2,596			0
	Total	$	1,422,390			$	39,750			$	(14,112	)		$	1,448,027		$	(3,290	)
	(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
		Number of		Fair				Gross				Unrealized			Number of		Fair			Gross				Unrealized
		Securities		Value				Unrealized				Losses as			Securities		Value			Unrealized				Losses as
		with						Losses				% of Cost			with					Losses				% of Cost
		Unrealized													Unrealized
		Losses													Losses
	31-Mar-14
	Fixed maturities:
	U.S. government	12		$	27,125			$	(381	)		1.4	%		0		$	0		$	0			0	%
	State and municipal	34		71,836				(484		)		0.7	%		5		10,469			(257		)		2.4	%
	Mortgage-backed securities:
	Residential	187		173,264				(4,711		)		2.6	%		46		46,299			(1,493		)		3.1	%
	Commercial	6		9,192				(152		)		1.6	%		5		9,773			(78		)		0.8	%
	Total mortgage-backed securities	193		$	182,456			$	(4,864	)		2.6	%		51		$	56,071		$	(1,571	)		2.7	%
	Asset-backed securities	18		13,567				(76		)		0.6	%		0		0			0				0	%
	Corporates	69		96,334				(1,263		)		1.3	%		2		2,483			(89		)		3.5	%
	Total fixed maturities	326		$	391,318			$	(7,068	)		1.8	%		58		$	69,024		$	(1,917	)		2.7	%
	Equity securities	0		0				0				0	%		0		0			0				0	%
	Short-term investments	0		0				0				0	%		0		0			0				0	%
	Total	326		$	391,318			$	(7,068	)		1.8	%		58		$	69,024		$	(1,917	)		2.7	%
		Less than 12 Months														12 Months or More
		Number of			Fair				Gross				Unrealized			Number of		Fair			Gross				Unrealized
		Securities			Value				Unrealized				Losses as			Securities		Value			Unrealized				Losses as
		with							Losses				% of Cost			with					Losses				% of Cost
		Unrealized														Unrealized
		Losses														Losses
	December 31, 2013
	Fixed maturities:
	U.S. government	11			$	26,396			$	(427	)		1.6	%		0		$	0		$	0			0	%
	State and municipal	51			121,431				(1,425		)		1.2	%		4		8,062			(346		)		4.1	%
	Mortgage-backed securities:
	Residential	229			207,821				(7,064		)		3.3	%		34		39,659			(1,744		)		4.2	%
	Commercial	11			22,311				(290		)		1.3	%		1		756			(14		)		1.8	%
	Total mortgage-backed securities	240			$	230,133			$	(7,354	)		3.1	%		35		$	40,415		$	(1,758	)		4.2	%
	Asset-backed securities	18			14,738				(103		)		0.7	%		0		0			0				0	%
	Corporates	90			115,735				(2,621		)		2.2	%		1		1,212			(79		)		6.1	%
	Total fixed maturities	410			$	508,432			$	(11,929	)		2.3	%		40		$	49,688		$	(2,183	)		4.2	%
	Equity securities	0			0				0				0	%		0		0			0				0	%
	Short-term investments	0			0				0				0	%		0		0			0				0	%
	Total	410			$	508,432			$	(11,929	)		2.3	%		40		$	49,688		$	(2,183	)		4.2	%
Summary of unrealized gains or losses	'
	The following table summarizes those securities, excluding the rabbi trust, with unrealized gains or losses:
		March 31,			December 31,
		2014			2013
	Number of positions held with unrealized:
	Gains	710			590
	Losses	384			450
	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	85	%		81	%
	Losses that were investment grade	94	%		93	%
	Percentage of fair value held with unrealized:
	Gains that were investment grade	89	%		88	%
	Losses that were investment grade	94	%		95	%
Unrealized loss by age and severity	'
	The following table sets forth the amount of unrealized loss, excluding the rabbi trust, by age and severity at March 31, 2014 (in thousands):
	Age of Unrealized Losses:	Fair Value of				Total Gross				Less Than 5%*				5% - 10%*			Greater
		Securities with				Unrealized											Than 10%*
		Unrealized				Losses
		Losses
	Three months or less	$	141,568			$	(468	)		$	(468	)		$	0		$	0
	Four months through six months	34,866				(423		)		(423		)		0			0
	Seven months through nine months	1,307				(23		)		(23		)		0			0
	Ten months through twelve months	222,096				(6,324		)		(3,863		)		(2,462		)	0
	Greater than twelve months	60,505				(1,747		)		(1,229		)		(518		)	0
	Total	$	460,341			$	(8,986	)		$	(6,006	)		$	(2,980	)	$	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
		Fixed				Equity				Short-Term Investments				Tax			Net
		Maturities				Securities								Effects
	Three months ended March 31, 2014
	Unrealized holding gains (losses) on securities arising during the period	$	7,389			$	458			$	5			$	(2,748	)	$	5,104
	Realized (gains) losses on securities sold	(666		)		0				(5		)		235			(437		)
	Impairment loss recognized in earnings	27				0				0				(9		)	17
	Change in unrealized gains (losses) on marketable securities, net	$	6,750			$	458			$	(1	)		$	(2,523	)	$	4,685
	Three months ended March 31, 2013
	Unrealized holding gains (losses) on securities arising during the period	$	(1,485	)		$	4,173			$	0			$	(941	)	$	1,747
	Realized (gains) losses on securities sold	(3,522		)		(373		)		0				1,363			(2,532		)
	Impairment loss recognized in earnings	72				0				0				(25		)	47
	Change in unrealized gains (losses) on marketable securities, net	$	(4,936	)		$	3,800			$	0			$	398		$	(738	)
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):
		Three months ended March 31,
		2014				2013
	Beginning balance	$	956			$	487
	Additions for:
	Previously impaired securities	19				0
	Newly impaired securities	8				0
	Reductions for:
	Securities sold and paid down	(40		)		(40		)
	Ending balance	$	943			$	447
Scheduled maturities of fixed maturity securities	'
	The table below sets forth the scheduled maturities of fixed maturity securities at March 31, 2014, 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				Securities				Securities				All Fixed			All Fixed
		with				with				with No				Maturity			Maturity
		Unrealized				Unrealized				Unrealized				Securities			Securities
		Gains				Losses				Gains or
										Losses
	One year or less	$	62,289			$	3,312			$	2,325			$	67,925		$	67,275
	After one year through five years	486,673				122,265				1,670				610,608			597,570
	After five years through ten years	184,061				80,145				60				264,265			259,349
	After ten years	15,080				2,526				0				17,606			16,931
	Mortgage-backed and asset-backed securities	197,535				252,094				0				449,629			452,930
	Total	$	945,637			$	460,341			$	4,055			$	1,410,033		$	1,394,055

Income_Taxes_Tables

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2014
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 March 31,
		2014			2013
	Earnings before income taxes	$	14,647		$	12,105
	Income taxes at statutory rate	5,126			4,237
	Effect of:
	Dividends-received deduction	(107		)	(49		)
	Tax-exempt interest	(702		)	(750		)
	Other	3			5
	Provision for income taxes as shown on the Consolidated Statements of Earnings	$	4,320		$	3,443
	GAAP effective tax rate	29.5		%	28.4		%

Additional_Information_Tables

Additional Information (Tables)	3 Months Ended
	Mar. 31, 2014
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 March 31,
		2014		2013
	Income tax payments	$	0	$	0
	Interest payments on debt	6,875		6,951

Insurance_Reserves_Tables

Insurance Reserves (Tables)	3 Months Ended
	Mar. 31, 2014
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 March 31,
		2014			2013
	Balance at Beginning of Period
	Unpaid losses on known claims	$	221,447		$	205,589
	IBNR losses	262,660			218,552
	LAE	162,469			148,753
	Total unpaid losses and LAE	646,577			572,894
	Reinsurance recoverables	(14,431		)	(13,678		)
	Unpaid losses and LAE, net of reinsurance recoverables	632,146			559,215
	Current Activity
	Loss and LAE incurred:
	Current accident year	256,776			250,499
	Prior accident years	(3,074		)	(128		)
	Total loss and LAE incurred	253,702			250,371
	Loss and LAE payments:
	Current accident year	(80,818		)	(77,856		)
	Prior accident years	(156,683		)	(148,723		)
	Total loss and LAE payments	(237,502		)	(226,578		)
	Balance at End of Period
	Unpaid losses and LAE, net of reinsurance recoverables	648,346			583,008
	Add back reinsurance recoverables	14,544			13,793
	Total unpaid losses and LAE	$	662,890		$	596,800
	Unpaid losses on known claims	$	226,659		$	218,835
	IBNR losses	272,159			223,898
	LAE	164,072			154,068
	Total unpaid losses and LAE	$	662,890		$	596,800

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2014
Stockholders' Equity Note [Abstract]	'
Accumulated Other Comprehensive Income (Loss)	'
	The components of other comprehensive income before and after tax are as follows (in thousands):
		Three months ended March 31,
		2014									2013
		Before Tax			Income Tax			Net			Before Tax			Income Tax			Net
	Accumulated change in postretirement benefit liability, beginning of period	$	(62	)	$	22		$	(40	)	$	(967	)	$	339		$	(629	)
	Effect on other comprehensive income	657			(230		)	427			50			(17		)	32
	Accumulated change in postretirement benefit liability, end of period	$	595		$	(208	)	$	387		$	(918	)	$	321		$	(596	)
	Accumulated unrealized gains on investments, net, beginning of period	$	25,638		$	(8,973	)	$	16,665		$	46,892		$	(16,412	)	$	30,480
	Other comprehensive income before reclassification	7,852			(2,748		)	5,104			2,688			(941		)	1,747
	Reclassification adjustment for other-than-temporary impairments included in net income	27			(9		)	17			72			(25		)	47
	Reclassification adjustment for realized gains included in net income	(672		)	235			(437		)	(3,896		)	1,363			(2,532		)
	Effect on other comprehensive income	7,208			(2,523		)	4,685			(1,136		)	398			(738		)
	Accumulated unrealized gains on investments, net, end of period	$	32,846		$	(11,496	)	$	21,350		$	45,756		$	(16,015	)	$	29,741
	Accumulated other comprehensive income, beginning of period	$	25,576		$	(8,952	)	$	16,624		$	45,924		$	(16,073	)	$	29,851
	Change in postretirement benefit liability	657			(230		)	427			50			(17		)	32
	Change in unrealized gains on investments, net	7,208			(2,523		)	4,685			(1,136		)	398			(738		)
	Effect on other comprehensive income	7,865			(2,753		)	5,112			(1,086		)	380			(706		)
	Accumulated other comprehensive income, end of period	$	33,441		$	(11,704	)	$	21,737		$	44,838		$	(15,693	)	$	29,145

Reporting_And_Accounting_Polic2

Reporting And Accounting Policies (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
	states
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'
Number of states licensed to write insurance	50	'
Installment and Other Fee Income	$24,340	$25,300

Computation_Of_Earnings_Per_Sh2

Computation Of Earnings Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Computation of net earnings per share	'	'	'
Net earnings	$10,327	$8,662	$23,971
Average basic shares outstanding (shares)	11,429	11,522	'
Basic net earnings per share (usd per share)	$0.90	$0.75	'
Average diluted shares outstanding (shares)	11,580	11,753	'
Diluted net earnings per share (usd per share)	$0.89	$0.74	'
Restricted Stock	'	'	'
Computation of net earnings per share	'	'	'
Dilutive shares (shares)	57	42	'
Stock Options	'	'	'
Computation of net earnings per share	'	'	'
Dilutive shares (shares)	2	36	'
Performance Shares	'	'	'
Computation of net earnings per share	'	'	'
Dilutive shares (shares)	92	152	'

Fair_Value_Fair_Value_by_Hiera

Fair Value - Fair Value by Hierarchy (Details) (Recurring basis, USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Cash and cash equivalents	$84,892	$134,211
Total cash and investments	245,597	291,033
Percentage of total cash and investments (percent)	15.40%	18.40%
Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Cash and cash equivalents	0	0
Total cash and investments	1,339,369	1,285,345
Percentage of total cash and investments (percent)	84.20%	81.20%
Long-term debt	282,300	272,600
Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Cash and cash equivalents	0	0
Total cash and investments	5,583	5,860
Percentage of total cash and investments (percent)	0.40%	0.40%
Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Cash and cash equivalents	84,892	134,211
Total cash and investments	1,590,549	1,582,238
Percentage of total cash and investments (percent)	100.00%	100.00%
U.S. Government | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	65,081	64,496
U.S. Government | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	129	171
U.S. Government | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
U.S. Government | Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	65,210	64,666
Fixed maturities | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	65,081	64,496
Fixed maturities | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	1,339,369	1,283,949
Fixed maturities | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	5,583	5,860
Fixed maturities | Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	1,410,033	1,354,305
State and Municipal | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
State and Municipal | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	499,088	487,111
State and Municipal | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
State and Municipal | Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	499,088	487,111
Mortgage- Backed Securities | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
Mortgage- Backed Securities | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	381,747	359,162
Mortgage- Backed Securities | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
Mortgage- Backed Securities | Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	381,747	359,162
Residential | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
Residential | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	347,260	323,346
Residential | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
Residential | Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	347,260	323,346
Commercial | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
Commercial | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	34,487	35,816
Commercial | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
Commercial | Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	34,487	35,816
Collateralized Mortgage Obligations | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	'	0
Collateralized Mortgage Obligations | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	'	1,291
Collateralized Mortgage Obligations | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	'	0
Collateralized Mortgage Obligations | Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	'	1,291
Asset-Backed Securities | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
Asset-Backed Securities | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	67,352	70,573
Asset-Backed Securities | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	530	686
Asset-Backed Securities | Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	67,882	71,259
Corporates | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
Corporates | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	391,053	365,642
Corporates | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	5,054	5,175
Corporates | Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	396,107	370,816
Equity securities | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	94,224	91,127
Equity securities | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
Equity securities | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
Equity securities | Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	94,224	91,127
Short-term investments | Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	1,400	1,200
Short-term investments | Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	1,396
Short-term investments | Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	0	0
Short-term investments | Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale Securities	$1,400	$2,596

Fair_Value_Level_3_Investments

Fair Value - Level 3 Investments (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2014
Level 3 reconciliation	'	'	'
Balance at beginning of period	$5,860	$12,813	$5,860
Included in net earnings	9	99	'
Included in other comprehensive income	-56	-202	'
Settlements	-230	-697	'
Balance at end of period	5,583	'	'
Number of prices provided by unaffiliated money managers (prices)	1	'	'
Number of securities not rated by a nationally recognized statistical rating organization (securities)	1	'	'
U.S. Government	'	'	'
Level 3 reconciliation	'	'	'
Balance at beginning of period	0	3,712	0
Included in net earnings	0	-23	'
Included in other comprehensive income	0	-89	'
Settlements	0	-485	'
Balance at end of period	0	3,115	'
Corporates	'	'	'
Level 3 reconciliation	'	'	'
Balance at beginning of period	5,175	9,101	5,175
Included in net earnings	9	122	'
Included in other comprehensive income	-56	'	-113
Settlements	-74	-211	'
Balance at end of period	5,054	8,899	'
Asset-Backed Securities	'	'	'
Level 3 reconciliation	'	'	'
Balance at beginning of period	686	0	686
Included in net earnings	0	0	'
Included in other comprehensive income	0	0	'
Settlements	-156	0	'
Balance at end of period	530	0	'
Level 3	'	'	'
Level 3 reconciliation	'	'	'
Number of Positions (securities)	9	'	'
Level 3 | Recurring basis	'	'	'
Level 3 reconciliation	'	'	'
Balance at end of period	$5,600	'	'
Non-Binding Broker Quotes | Level 3	'	'	'
Level 3 reconciliation	'	'	'
Number of Positions (securities)	6	'	'
Manual Calculation | Level 3	'	'	'
Level 3 reconciliation	'	'	'
Number of Positions (securities)	1	'	'
Recovery Rate | Level 3	'	'	'
Level 3 reconciliation	'	'	'
Probability of default (percent)	100.00%	'	'

Fair_Value_Fair_Value_of_Finan

Fair Value - Fair Value of Financial Instruments (Details) (USD $)

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

In Thousands, unless otherwise specified

Carrying Value

Carrying Value

Fair Value

Fair Value

Fixed maturities

Fixed maturities

Fixed maturities

Fixed maturities

Equity securities

Equity securities

Equity securities

Equity securities

Short-term investments

Short-term investments

Short-term investments

Short-term investments

Recovery Rate

Manual Calculation

Carrying Value

Carrying Value

Fair Value

Fair Value

Carrying Value

Carrying Value

Fair Value

Fair Value

Carrying Value

Carrying Value

Fair Value

Fair Value

Level 3

Level 3

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash and cash equivalents

$84,892

$134,211

$84,892

$134,211

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Available-for-sale securities

1,590,549

1,582,238

1,590,549

1,582,238

1,410,033

1,354,305

1,410,033

1,354,305

94,224

91,127

94,224

91,127

1,400

2,596

1,400

2,596

100

[1]

100

Probability of default (percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

Long-term debt

$275,000

$275,000

$282,266

$272,632

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Recovery rate for senior unsecured bonds as indicated in Moody's Investor's Service Annual Default Study: Corporate Default and Recovery Rates, 1920-2012.

Investments_Textual_Details

Investments - Textual (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]	'	'	'
Gross realized gains	$800,000	$4,300,000	'
Gross realized losses	100,000	400,000	'
Proceeds from Sale of Available-for-sale Securities	65,000,000	196,200,000	'
Receivable for Investments Sold	$209,000	$2,800,000	$2,791,000

Investments_Investments_by_maj

Investments - Investments by major category (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost or Cost, Fixed maturities	$1,394,055		$1,345,077
Amortized Cost or Cost, Equity securities	77,356		74,718
Amortized Cost or Cost, Total	1,472,812		1,422,390
Gross Unrealized Gains	41,831		39,750
Gross Unrealized Losses	-8,986		-14,112
Fair Value, Fixed maturities	1,410,033		1,354,305
Fair Value, Equity securities	94,224		91,127
Total investments	1,505,657		1,448,027
OTTI Recognized in Accumulated OCI, Fixed maturities	-3,858	[1]	-3,290	[1]
OTTI Recognized in Accumulated OCI	-3,858	[1]	-3,290	[1]
Fixed maturities	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Gross Unrealized Gains	24,963		23,340
Gross Unrealized Losses	-8,986		-14,112
U.S. Government	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost or Cost, Fixed maturities	64,771		64,194
Gross Unrealized Gains	820		900
Gross Unrealized Losses	-381		-427
Fair Value, Fixed maturities	65,210		64,666
OTTI Recognized in Accumulated OCI, Fixed maturities	0	[1]	0	[1]
State and Municipal	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost or Cost, Fixed maturities	488,609		478,092
Gross Unrealized Gains	11,220		10,789
Gross Unrealized Losses	-741		-1,771
Fair Value, Fixed maturities	499,088		487,111
OTTI Recognized in Accumulated OCI, Fixed maturities	-87	[1]	-73	[1]
Mortgage- Backed Securities	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost or Cost, Fixed maturities	385,193		365,950
Gross Unrealized Gains	2,990		2,324
Gross Unrealized Losses	-6,435		-9,113
Fair Value, Fixed maturities	381,747		359,162
OTTI Recognized in Accumulated OCI, Fixed maturities	-3,232	[1]	-2,435	[1]
Residential	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost or Cost, Fixed maturities	350,772		330,169
Gross Unrealized Gains	2,693		1,985
Gross Unrealized Losses	-6,205		-8,809
Fair Value, Fixed maturities	347,260		323,346
OTTI Recognized in Accumulated OCI, Fixed maturities	-3,232	[1]	-2,435	[1]
Commercial	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost or Cost, Fixed maturities	34,421		35,781
Gross Unrealized Gains	297		339
Gross Unrealized Losses	-230		-304
Fair Value, Fixed maturities	34,487		35,816
OTTI Recognized in Accumulated OCI, Fixed maturities	0	[1]	0	[1]
Collateralized Mortgage Obligations	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost or Cost, Fixed maturities	'		1,228
Gross Unrealized Gains	'		63
Gross Unrealized Losses	'		0
Fair Value, Fixed maturities	'		1,291
OTTI Recognized in Accumulated OCI, Fixed maturities	'		-161	[1]
Asset-Backed Securities	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost or Cost, Fixed maturities	67,737		71,183
Gross Unrealized Gains	221		178
Gross Unrealized Losses	-76		-103
Fair Value, Fixed maturities	67,882		71,259
OTTI Recognized in Accumulated OCI, Fixed maturities	-8	[1]	-8	[1]
Corporates	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost or Cost, Fixed maturities	387,745		364,430
Gross Unrealized Gains	9,713		9,086
Gross Unrealized Losses	-1,352		-2,700
Fair Value, Fixed maturities	396,107		370,816
OTTI Recognized in Accumulated OCI, Fixed maturities	-531	[1]	-612	[1]
Equity securities	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost or Cost, Equity securities	77,356		74,718
Gross Unrealized Gains	16,868		16,409
Gross Unrealized Losses	0		0
Fair Value, Equity securities	94,224		91,127
OTTI Recognized in Accumulated OCI, Equity securities	0	[1]	0	[1]
Short-term investments	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Amortized Cost or Cost, Equity securities	1,400		2,595
Gross Unrealized Gains	0		1
Gross Unrealized Losses	0		0
Fair Value, Equity securities	1,400		2,596
OTTI Recognized in Accumulated OCI, Equity securities	$0	[1]	$0
[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.

Investments_Continuous_loss_po

Investments - Continuous loss position investments (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	384	450
Less than 12 Months, Fair Value	$391,318,000	$508,432,000
Less than 12 Months, Gross Unrealized Losses	-7,068,000	-11,929,000
12 Months or More, Fair Value	69,024,000	49,688,000
12 Months or More, Gross Unrealized Losses	-1,917,000	-2,183,000
Fixed maturities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	391,318,000	508,432,000
Less than 12 Months, Gross Unrealized Losses	-7,068,000	-11,929,000
12 Months or More, Fair Value	69,024,000	49,688,000
12 Months or More, Gross Unrealized Losses	-1,917,000	-2,183,000
U.S. Government	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	27,125,000	26,396,000
Less than 12 Months, Gross Unrealized Losses	-381,000	-427,000
12 Months or More, Fair Value	0	0
12 Months or More, Gross Unrealized Losses	0	0
State and Municipal	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	71,836,000	121,431,000
Less than 12 Months, Gross Unrealized Losses	-484,000	-1,425,000
12 Months or More, Fair Value	10,469,000	8,062,000
12 Months or More, Gross Unrealized Losses	-257,000	-346,000
Mortgage- Backed Securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	182,456,000	230,133,000
Less than 12 Months, Gross Unrealized Losses	-4,864,000	-7,354,000
12 Months or More, Fair Value	56,071,000	40,415,000
12 Months or More, Gross Unrealized Losses	-1,571,000	-1,758,000
Residential	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	173,264,000	207,821,000
Less than 12 Months, Gross Unrealized Losses	-4,711,000	-7,064,000
12 Months or More, Fair Value	46,299,000	39,659,000
12 Months or More, Gross Unrealized Losses	-1,493,000	-1,744,000
Commercial	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	9,192,000	22,311,000
Less than 12 Months, Gross Unrealized Losses	-152,000	-290,000
12 Months or More, Fair Value	9,773,000	756,000
12 Months or More, Gross Unrealized Losses	-78,000	-14,000
Asset-Backed Securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	13,567,000	14,738,000
Less than 12 Months, Gross Unrealized Losses	-76,000	-103,000
12 Months or More, Fair Value	0	0
12 Months or More, Gross Unrealized Losses	0	0
Corporates	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	96,334,000	115,735,000
Less than 12 Months, Gross Unrealized Losses	-1,263,000	-2,621,000
12 Months or More, Fair Value	2,483,000	1,212,000
12 Months or More, Gross Unrealized Losses	-89,000	-79,000
Equity securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Gross Unrealized Losses	0	0
12 Months or More, Fair Value	0	0
12 Months or More, Gross Unrealized Losses	0	0
Short-term investments	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Gross Unrealized Losses	0	0
12 Months or More, Fair Value	0	0
12 Months or More, Gross Unrealized Losses	0	0
Less than 12 Months	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	326	410
Unrealized Losses as Percentage of Cost	1.80%	2.30%
Less than 12 Months | Fixed maturities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	326	410
Unrealized Losses as Percentage of Cost	1.80%	2.30%
Less than 12 Months | U.S. Government	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	12	11
Unrealized Losses as Percentage of Cost	1.40%	1.60%
Less than 12 Months | State and Municipal	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	34	51
Unrealized Losses as Percentage of Cost	0.70%	1.20%
Less than 12 Months | Mortgage- Backed Securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	193	240
Unrealized Losses as Percentage of Cost	2.60%	3.10%
Less than 12 Months | Residential	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	187	229
Unrealized Losses as Percentage of Cost	2.60%	3.30%
Less than 12 Months | Commercial	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	6	11
Unrealized Losses as Percentage of Cost	1.60%	1.30%
Less than 12 Months | Asset-Backed Securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	18	18
Unrealized Losses as Percentage of Cost	0.60%	0.70%
Less than 12 Months | Corporates	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	69	90
Unrealized Losses as Percentage of Cost	1.30%	2.20%
Less than 12 Months | Equity securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	0	0
Unrealized Losses as Percentage of Cost	0.00%	0.00%
Less than 12 Months | Short-term investments	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	0	0
Unrealized Losses as Percentage of Cost	0.00%	0.00%
12 Months or More	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	58	40
Unrealized Losses as Percentage of Cost	2.70%	4.20%
12 Months or More, Fair Value	60,505,000	'
12 Months or More, Gross Unrealized Losses	-1,747,000	'
12 Months or More | Fixed maturities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	58	40
Unrealized Losses as Percentage of Cost	2.70%	4.20%
12 Months or More | U.S. Government	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	0	0
Unrealized Losses as Percentage of Cost	0.00%	0.00%
12 Months or More | State and Municipal	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	5	4
Unrealized Losses as Percentage of Cost	2.40%	4.10%
12 Months or More | Mortgage- Backed Securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	51	35
Unrealized Losses as Percentage of Cost	2.70%	4.20%
12 Months or More | Residential	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	46	34
Unrealized Losses as Percentage of Cost	3.10%	4.20%
12 Months or More | Commercial	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	5	1
Unrealized Losses as Percentage of Cost	0.80%	1.80%
12 Months or More | Asset-Backed Securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	0	0
Unrealized Losses as Percentage of Cost	0.00%	0.00%
12 Months or More | Corporates	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	2	1
Unrealized Losses as Percentage of Cost	3.50%	6.10%
12 Months or More | Equity securities	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	0	0
Unrealized Losses as Percentage of Cost	0.00%	0.00%
12 Months or More | Short-term investments	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Number of Securities with Unrealized Losses (positions)	0	0
Unrealized Losses as Percentage of Cost	0.00%	0.00%
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	'
Number of previous impairment charges	1	'

Investments_Summary_of_unreali

Investments - Summary of unrealized gains and losses (Details)	Mar. 31, 2014	Dec. 31, 2013
	Securities	Securities
Investments, Debt and Equity Securities [Abstract]	'	'
Number of positions held with unrealized gains (positions)	710	590
Number of positions held with unrealized losses (positions)	384	450
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)	85.00%	81.00%
Percentage of positions held with unrealized losses that were investment grade (percent)	94.00%	93.00%
Percentage of fair value held with unrealized gains that were investment grade (percent)	89.00%	88.00%
Percentage of fair value held with unrealized losses that were investment grade (percent)	94.00%	95.00%

Investments_Unrealized_losses_

Investments - Unrealized losses by age and severity (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]	'		'
Fair Value of Securities with Unrealized Losses, 0-12 Months	$391,318		$508,432
Fair Value of Securities with Unrealized Losses, Greater Than 12 Months	69,024		49,688
Fair Value of Securities with Unrealized Losses	460,341		'
Total Gross Unrealized Losses, 0-12 Months	-7,068		-11,929
Total Gross Unrealized Losses, Greater Than 12 Months	-1,917		-2,183
Total Gross Unrealized Losses	-8,986		'
0-3 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Fair Value of Securities with Unrealized Losses, 0-12 Months	141,568		'
Total Gross Unrealized Losses, 0-12 Months	-468		'
3-6 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Fair Value of Securities with Unrealized Losses, 0-12 Months	34,866		'
Total Gross Unrealized Losses, 0-12 Months	-423		'
6-9 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Fair Value of Securities with Unrealized Losses, 0-12 Months	1,307		'
Total Gross Unrealized Losses, 0-12 Months	-23		'
9-12 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Fair Value of Securities with Unrealized Losses, 0-12 Months	222,096		'
Total Gross Unrealized Losses, 0-12 Months	-6,324		'
Greater than twelve months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Fair Value of Securities with Unrealized Losses, Greater Than 12 Months	60,505		'
Total Gross Unrealized Losses, Greater Than 12 Months	-1,747		'
Less Than 5% as a Percentage of Amortized Cost or Cost	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses	-6,006	[1]	'
Less Than 5% as a Percentage of Amortized Cost or Cost | 0-3 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	-468	[1]	'
Less Than 5% as a Percentage of Amortized Cost or Cost | 3-6 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	-423	[1]	'
Less Than 5% as a Percentage of Amortized Cost or Cost | 6-9 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	-23	[1]	'
Less Than 5% as a Percentage of Amortized Cost or Cost | 9-12 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	-3,863	[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, Greater Than 12 Months	-1,229	[1]	'
5% - 10% as a Percentage of Amortized Cost or Cost	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses	-2,980	[1]	'
5% - 10% as a Percentage of Amortized Cost or Cost | 0-3 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	0	[1]	'
5% - 10% as a Percentage of Amortized Cost or Cost | 3-6 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	0	[1]	'
5% - 10% as a Percentage of Amortized Cost or Cost | 6-9 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	0	[1]	'
5% - 10% as a Percentage of Amortized Cost or Cost | 9-12 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	-2,462	[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, Greater Than 12 Months	-518	[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 | 0-3 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	0	[1]	'
Greater Than 10% as a Percentage of Amortized Cost or Cost | 3-6 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	0	[1]	'
Greater Than 10% as a Percentage of Amortized Cost or Cost | 6-9 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	0	[1]	'
Greater Than 10% as a Percentage of Amortized Cost or Cost | 9-12 months	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Total Gross Unrealized Losses, 0-12 Months	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, Greater Than 12 Months	$0	[1]	'
[1]	As a percentage of amortized cost or cost.

Investments_Change_in_unrealiz

Investments - Change in unrealized gains and losses (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Schedule of Available-for-sale Securities [Line Items]	'		'
Unrealized holding gains arising during the period	$7,852		$2,688
Unrealized holding gains (losses) on securities arising during the period, tax effects	2,748		941
Unrealized holding gains (losses) on securities arising during period, net of tax	5,104		1,747
Realized (gains) losses on securities sold, pre-tax	672		3,896
Realized (gains) losses on securities sold, tax effects	-235		-1,363
Realized (gains) losses on securities sold, net of tax	-437		-2,532
Impairment loss recognized in earnings, pre-tax	27		72
Impairment loss recognized in earnings, tax effects	-9		-25
Impairment loss recognized in earnings	17		47
Unrealized gains (losses) on investments, net	7,208		-1,136
Change in unrealized gains (losses) on marketable securities, net, tax effects	2,523		-398
Change in unrealized gains (losses) on marketable securities, net, net of tax	4,685		-738
Fixed maturities	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Unrealized holding gains arising during the period	7,389		-1,485
Realized (gains) losses on securities sold, pre-tax	-666		-3,522
Impairment loss recognized in earnings, pre-tax	27	[1]	72	[1]
Unrealized gains (losses) on investments, net	6,750		-4,936
Equity securities	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Unrealized holding gains arising during the period	458		4,173
Realized (gains) losses on securities sold, pre-tax	0		-373
Impairment loss recognized in earnings, pre-tax	0	[1]	0	[1]
Unrealized gains (losses) on investments, net	458		3,800
Short-term investments	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Unrealized holding gains arising during the period	5		0
Realized (gains) losses on securities sold, pre-tax	-5		0
Impairment loss recognized in earnings, pre-tax	0	[1]	0	[1]
Unrealized gains (losses) on investments, net	($1)		$0
[1]	Tax excludes valuation reserveThe total non-credit portion of OTTI recognized in Accumulated OCI reflecting the original non-credit loss at the time the credit impairment was determined.

Investments_Credit_losses_roll

Investments - Credit losses rollforward (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Credit losses on fixed maturity securities	'	'
Beginning balance	$956	$487
Additions for newly impaired securities	8	0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses	19	0
Reductions for securities sold and paid down	-40	-40
Ending balance	$943	$447

Investments_Investments_by_con

Investments - Investments by contractual maturity (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
One year or less, fair value	$67,925	'
One year or less, amortized cost	67,275	'
After one year through five years, fair value	610,608	'
After one year through five years, amortized cost	597,570	'
After five years through ten years, fair value	264,265	'
After five years through ten years, amortized cost	259,349	'
After ten years, fair value	17,606	'
After ten years, amortized cost basis	16,931	'
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	449,629	'
Mortgage-backed, asset-backed and collateralized mortgage obligations, amortized cost	452,930	'
Fair Value, Fixed maturities	1,410,033	1,354,305
Amortized Cost	1,394,055	1,345,077
Securities with Unrealized Gains	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
One year or less, fair value	62,289	'
After one year through five years, fair value	486,673	'
After five years through ten years, fair value	184,061	'
After ten years, fair value	15,080	'
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	197,535	'
Fair Value, Fixed maturities	945,637	'
Securities with Unrealized Losses	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
One year or less, fair value	3,312	'
After one year through five years, fair value	122,265	'
After five years through ten years, fair value	80,145	'
After ten years, fair value	2,526	'
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	252,094	'
Fair Value, Fixed maturities	460,341	'
Securities with No Unrealized Gains or Losses	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
One year or less, fair value	2,325	'
After one year through five years, fair value	1,670	'
After five years through ten years, fair value	60	'
After ten years, fair value	0	'
Mortgage-backed, asset-backed and collateralized mortgage obligations, fair value	0	'
Fair Value, Fixed maturities	$4,055	'

LongTerm_Debt_Details

Long-Term Debt (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Aug. 31, 2012	Mar. 31, 2014	Mar. 31, 2013
			US Treasury Note	Revolving Credit Facility	Senior Notes Due 2022	Senior Notes Due 2022
					Senior Notes	Senior Notes
Debt Instrument [Line Items]	'	'	'	'	'	'
Principal amount	'	'	'	'	'	$275,000,000
Coupon rate (percent)	'	'	'	'	'	5.00%
Capitalized debt issuance costs	'	'	'	'	2,200,000	'
Long-term debt, fair value	282,266,000	272,632,000	'	'	'	282,300,000
Basis points	1.90%	'	'	'	'	'
Term of note used	'	'	'	'	'	'10 years
Effective percentage (percent)	'	'	2.72%	'	'	'
Credit facility capacity	'	'	'	$50,000,000	'	'
Term of revolving credit facility	'	'	'	'3 years	'	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]	'	'
Federal statutory income tax rate (percent)	35.00%	'
Income tax reconciliation	'	'
Earnings before income taxes	$14,647	$12,105
Income taxes at statutory rate	5,126	4,237
Dividends-received deduction	-107	-49
Tax-exempt interest	-702	-750
Other	3	5
Provision for income taxes as shown on the Consolidated Statements of Earnings	$4,320	$3,443
GAAP effective tax rate (percent)	29.50%	28.40%

Additional_Information_Details

Additional Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract]	'	'	'
Income tax payments	$0	$0	'
Interest payments on debt	6,875,000	6,951,000	'
Negative cash book balances	$58,700,000	'	$50,500,000

Insurance_Reserves_Details

Insurance Reserves (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]	'	'
Unpaid losses on known claims, balance at beginning of period	$221,447	$205,589
IBNR losses, balance at beginning of period	262,660	218,552
LAE, balance at beginning of period	162,469	148,753
Total unpaid losses and LAE, balance at beginning of period	646,577	572,894
Reinsurance recoverables, balance at beginning of period	14,431	13,678
Unpaid losses and LAE, net of reinsurance recoverables, balance at beginning of period	632,146	559,215
Loss and LAE incurred, current accident year	256,776	250,499
Loss and LAE incurred, prior accident years	-3,074	-128
Total loss and LAE incurred	253,702	250,371
Loss and LAE payments, current accident year	-80,818	-77,856
Loss and LAE payments, prior accident years	-156,683	-148,723
Total loss and LAE payments	-237,502	-226,578
Unpaid losses and LAE, net of reinsurance recoverables, balance at end of period	648,346	583,008
Add back reinsurance recoverables, balance at end of period	14,544	13,793
Total unpaid losses and LAE, balance at end of period	662,890	596,800
Unpaid losses on known claims, balance at end of period	226,659	218,835
IBNR losses, balance at end of period	272,159	223,898
LAE, balance at end of period	$164,072	$154,068

Commitments_And_Contingencies_

Commitments And Contingencies Commitments And Contingencies (Details) (Estate of Jorge Luis Arroyo, Jr., et al v Gustavo M Rodriguez, et al, USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Estate of Jorge Luis Arroyo, Jr., et al v Gustavo M Rodriguez, et al	'
Loss Contingencies [Line Items]	'
Estimate of possible loss	$30

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Before Tax [Abstract]	'	'
Accumulated other comprehensive income, beginning of period	$25,576	$45,924
Effect on other comprehensive income	7,865	-1,086
Accumulated other comprehensive income, end of period	33,441	44,838
Income Tax [Abstract]	'	'
Accumulated other comprehensive income, beginning of period	-8,952	-16,073
Effect on other comprehensive income	-2,753	380
Accumulated other comprehensive income, end of period	-11,704	-15,693
Net [Abstract]	'	'
Accumulated other comprehensive income, beginning of period	16,624	29,851
Other comprehensive income, net of tax	5,112	-706
Accumulated other comprehensive income, end of period	21,737	29,145
Accumulated Change Postretirement Benefite Liability [Member]	'	'
Before Tax [Abstract]	'	'
Accumulated other comprehensive income, beginning of period	-62	-967
Effect on other comprehensive income	657	50
Accumulated other comprehensive income, end of period	595	-918
Income Tax [Abstract]	'	'
Accumulated other comprehensive income, beginning of period	22	339
Effect on other comprehensive income	-230	-17
Accumulated other comprehensive income, end of period	-208	321
Net [Abstract]	'	'
Accumulated other comprehensive income, beginning of period	-40	-629
Other comprehensive income, net of tax	427	32
Accumulated other comprehensive income, end of period	387	-596
Accumulated Unrealized Gains on Investments, net [Member]	'	'
Before Tax [Abstract]	'	'
Accumulated other comprehensive income, beginning of period	25,638	46,892
Effect on other comprehensive income	7,208	-1,136
Other comprehensive income before reclassification	7,852	2,688
Accumulated other comprehensive income, end of period	32,846	45,756
Income Tax [Abstract]	'	'
Accumulated other comprehensive income, beginning of period	-8,973	-16,412
Other comprehensive income before reclassification	-2,748	-941
Effect on other comprehensive income	-2,523	398
Accumulated other comprehensive income, end of period	-11,496	-16,015
Net [Abstract]	'	'
Accumulated other comprehensive income, beginning of period	16,665	30,480
Other comprehensive income before reclassification	5,104	1,747
Other comprehensive income, net of tax	4,685	-738
Accumulated other comprehensive income, end of period	21,350	29,741
Reclassification Adjustment for Other-than-Temporary Impairment [Member]	'	'
Before Tax [Abstract]	'	'
Reclassicification adjustment	27	72
Income Tax [Abstract]	'	'
Reclassicification adjustment	-9	-25
Net [Abstract]	'	'
Reclassicification adjustment	17	47
Accumulated Unrealized Gains on Investments, Net [Member]	'	'
Before Tax [Abstract]	'	'
Effect on other comprehensive income	7,208	-1,136
Reclassicification adjustment	-672	-3,896
Income Tax [Abstract]	'	'
Reclassicification adjustment	235	1,363
Effect on other comprehensive income	-2,523	398
Net [Abstract]	'	'
Reclassicification adjustment	-437	-2,532
Other comprehensive income, net of tax	$4,685	($738)

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	3 Months Ended		1 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Apr. 30, 2014
			Building
			Subsequent Event
			sqft
Subsequent Event [Line Items]	'	'	'
Area of warehouse	'	'	62,808
Purchases of property and equipment	$5,249	$1,768	$3,500