Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2013

Fair Value Measurements [Abstract]

Assets and liabilities at fair value

			Level 1		Level 2		Level 3		Total
June 30, 2013
Fixed maturity securities
	U.S. government and government agency securities		$	103,294	$	20,370	$	0	$	123,664
	Fixed maturity securities of states, municipalities and
		political subdivisions		0		1,029,817		0		1,029,817
	Special purpose revenue bonds of states, municipalities
		and political subdivisions		0		2,262,343		9,277		2,271,620
	Corporate securities			0		1,236,476		169		1,236,645
	Residential mortgage-backed securities			0		605,495		0		605,495
	Commercial mortgage-backed securities			0		536,199		0		536,199
	Asset-backed securities			0		54,291		0		54,291
	Foreign government securities			0		236,909		0		236,909
		Total fixed maturity securities		103,294		5,981,900		9,446		6,094,640
Equity securities				347,840		0		0		347,840
Short-term investments*				115,965		100,828		0		216,793
Other investments				18		0		0		18
Restricted cash and securities				0		1,848		0		1,848
Premium, claims and other receivables				0		62,118		0		62,118
Other assets				0		0		589		589
	Total assets measured at fair value		$	567,117	$	6,146,694	$	10,035	$	6,723,846
Notes payable*			$	0	$	688,240	$	-	$	688,240
Accounts payable and accrued liabilities - forward contract				0		2,283		-		2,283
Accounts payable and accrued liabilities - earnout liability				0		1,848		7,133		8,981
	Total liabilities measured at fair value		$	0	$	692,371	$	7,133	$	699,504

			Level 1		Level 2		Level 3		Total
December 31, 2012
Fixed maturity securities
	U.S. government and government agency securities		$	174,520	$	25,087	$	0	$	199,607
	Fixed maturity securities of states, municipalities and
		political subdivisions		0		1,065,811		0		1,065,811
	Special purpose revenue bonds of states, municipalities
		and political subdivisions		0		2,200,331		0		2,200,331
	Corporate securities			0		1,315,006		164		1,315,170
	Residential mortgage-backed securities			0		664,887		0		664,887
	Commercial mortgage-backed securities			0		524,289		0		524,289
	Asset-backed securities			0		33,275		0		33,275
	Foreign government securities			0		278,411		0		278,411
		Total fixed maturity securities		174,520		6,107,097		164		6,281,781
Equity securities				284,639		0		0		284,639
Short-term investments*				251,988		111,065		0		363,053
Other investments				20,925		0		0		20,925
Restricted cash and securities				0		2,043		0		2,043
Premium, claims and other receivables				0		68,207		0		68,207
Other assets				0		0		349		349
	Total assets measured at fair value		$	732,072	$	6,288,412	$	513	$	7,020,997
Notes payable*			$	-	$	636,363	$	-	$	636,363
Accounts payable and accrued liabilities - forward contract				-		3,194		-		3,194
Accounts payable and accrued liabilities - earnout liability				-		2,043		7,009		9,052
	Total liabilities measured at fair value		$	0	$	641,600	$	7,009	$	648,609

Changes in fair value of level 3 assets

		2013								2012
								Accounts
								payable
		Fixed						and		Fixed
		maturity		Other		Total		accrued		maturity		Other		Total
		securities		assets		assets		liabilities		securities		assets		assets
Balance at beginning of year		$	164	$	349	$	513	$	7,009	$	1,170	$	1,516	$	2,686
Purchases			9,430		0		9,430		0		0		0		0
Gains reported in:
	Net earnings		6		110		116		62		0		215		215
	Other comprehensive income		15		0		15		0		2		0		2
Transfers out of Level 3			0		0		0		0		(1,015)		0		(1,015)
	Balance at March 31		9,615		459		10,074		7,071		157		1,731		1,888
Gains (losses) reported in:
	Net earnings		15		130		145		62		(1)		116		115
	Other comprehensive income (loss)		(184)		0		(184)		0		3		0		3
	Balance at June 30	$	9,446	$	589	$	10,035	$	7,133	$	159	$	1,847	$	2,006