Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Measurements [Abstract]

Assets and liabilities at fair value

			Level 1		Level 2		Level 3		Total
March 31, 2014
Fixed maturity securities
	U.S. government and government agency securities		$	83,462	$	8,635	$	0	$	92,097
	Fixed maturity securities of states, municipalities
		and political subdivisions		0		988,817		0		988,817
	Special purpose revenue bonds of states, municipalities
		and political subdivisions		0		2,321,316		0		2,321,316
	Corporate securities			0		1,211,037		150		1,211,187
	Residential mortgage-backed securities			0		637,289		0		637,289
	Commercial mortgage-backed securities			0		516,532		0		516,532
	Asset-backed securities			0		234,263		0		234,263
	Foreign government securities			0		94,125		0		94,125
		Total fixed maturity securities		83,462		6,012,014		150		6,095,626
Equity securities				426,089		0		0		426,089
Short-term investments*				268,479		159,221		0		427,700
Restricted cash and securities				0		2,022		0		2,022
Premium, claims and other receivables				0		71,463		0		71,463
Other assets				20		0		1,167		1,187
	Total assets measured at fair value		$	778,050	$	6,244,720	$	1,317	$	7,024,087
Notes payable*			$	0	$	773,615	$	0	$	773,615
Accounts payable and accrued liabilities - earnout liability				0		2,022		7,322		9,344
	Total liabilities measured at fair value		$	0	$	775,637	$	7,322	$	782,959

			Level 1		Level 2		Level 3		Total
December 31, 2013
Fixed maturity securities
	U.S. government and government agency securities		$	84,032	$	8,677	$	0	$	92,709
	Fixed maturity securities of states, municipalities
		and political subdivisions		0		986,486		0		986,486
	Special purpose revenue bonds of states, municipalities
		and political subdivisions		0		2,255,928		9,267		2,265,195
	Corporate securities			0		1,225,088		150		1,225,238
	Residential mortgage-backed securities			0		618,119		0		618,119
	Commercial mortgage-backed securities			0		504,888		0		504,888
	Asset-backed securities			0		182,392		0		182,392
	Foreign government securities			0		147,446		0		147,446
		Total fixed maturity securities		84,032		5,929,024		9,417		6,022,473
Equity securities				517,466		0		0		517,466
Short-term investments*				68,958		109,795		0		178,753
Restricted cash and securities				0		1,853		0		1,853
Premium, claims and other receivables				0		66,515		0		66,515
Other assets				20		0		941		961
	Total assets measured at fair value		$	670,476	$	6,107,187	$	10,358	$	6,788,021
Notes payable*			$	0	$	707,656	$	0	$	707,656
Accounts payable and accrued liabilities - earnout liability				0		1,853		7,259		9,112
	Total liabilities measured at fair value		$	0	$	709,509	$	7,259	$	716,768