Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Measurements [Abstract]

Assets and liabilities at fair value

		Level 1		Level 2		Level 3		Total
March 31, 2013
Fixed maturity securities
	U.S. government and government agency securities	$	105,667	$	20,582	$	0	$	126,249
	Fixed maturity securities of states, municipalities and
	political subdivisions		0		1,043,001		0		1,043,001
	Special purpose revenue bonds of states, municipalities
	and political subdivisions		0		2,241,742		9,448		2,251,190
	Corporate securities		0		1,301,458		167		1,301,625
	Residential mortgage-backed securities		0		655,623		0		655,623
	Commercial mortgage-backed securities		0		522,063		0		522,063
	Asset-backed securities		0		42,530		0		42,530
	Foreign government securities		0		243,175		0		243,175
	Total fixed maturity securities		105,667		6,070,174		9,615		6,185,456
Equity securities			350,352		0		0		350,352
Short-term investments*			193,033		74,401		0		267,434
Other investments			2,810		0		0		2,810
Restricted cash and securities			0		2,041		0		2,041
Premium, claims and other receivables			0		72,398		0		72,398
Other assets			0		0		459		459
	Total assets measured at fair value	$	651,862	$	6,219,014	$	10,074	$	6,880,950
Notes payable*		$	0	$	676,400	$	-	$	676,400
Accounts payable and accrued liabilities - forward contract			0		1,411		-		1,411
Accounts payable and accrued liabilities - earnout liability			0		2,041		7,071		9,112
	Total liabilities measured at fair value	$	0	$	679,852	$	7,071	$	686,923

		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