Investments (Tables)

3 Months Ended

Mar. 31, 2015

Investment [Abstract]

Fixed Maturity & Equity Securities Available For Sale

		Cost or		Gross		Gross
		amortized		unrealized		unrealized
		cost		gain		loss		Fair value
March 31, 2015
U.S. government and government agency securities		$	73,540	$	983	$	(7)	$	74,516
Fixed maturity securities of states, municipalities
	and political subdivisions		877,954		56,164		(55)		934,063
Special purpose revenue bonds of states, municipalities
	and political subdivisions		2,253,237		143,514		(1,065)		2,395,686
Corporate securities			726,320		28,287		(2,584)		752,023
Residential mortgage-backed securities			770,957		22,259		(1,806)		791,410
Commercial mortgage-backed securities			567,340		26,032		(592)		592,780
Asset-backed securities			369,289		1,051		(1,038)		369,302
Foreign government securities			124,957		471		(3,396)		122,032
Foreign corporate securities			428,442		7,830		(15,640)		420,632
	Total fixed maturity securities	$	6,192,036	$	286,591	$	(26,183)	$	6,452,444
Equity securities		$	325,435	$	25,464	$	(16,136)	$	334,763

December 31, 2014
U.S. government and government agency securities		$	70,279	$	827	$	(137)	$	70,969
Fixed maturity securities of states, municipalities
	and political subdivisions		896,130		58,738		(160)		954,708
Special purpose revenue bonds of states, municipalities
	and political subdivisions		2,246,707		143,291		(986)		2,389,012
Corporate securities			777,242		25,983		(4,656)		798,569
Residential mortgage-backed securities			805,458		20,215		(3,979)		821,694
Commercial mortgage-backed securities			593,956		19,707		(2,032)		611,631
Asset-backed securities			369,103		316		(2,592)		366,827
Foreign government securities			119,479		767		(1,554)		118,692
Foreign corporate securities			474,383		10,776		(6,893)		478,266
	Total fixed maturity securities	$	6,352,737	$	280,620	$	(22,989)	$	6,610,368
Equity securities		$	291,070	$	24,069	$	(18,787)	$	296,352

Gross unrealized losses and fair value of all available for sale securities that were in a continuous loss position

				Less than 12 months				12 months or more				Total
						Unrealized				Unrealized				Unrealized
				Fair value		losses		Fair value		losses		Fair value		losses
March 31, 2015
Fixed maturity securities
	U.S. government and government agency
		securities		$	421	$	-	$	3,985	$	(7)	$	4,406	$	(7)
	Fixed maturity securities of states,
		municipalities and political subdivisions			16,379		(55)		-		-		16,379		(55)
	Special purpose revenue bonds of states,
		municipalities and political subdivisions			84,718		(587)		17,341		(478)		102,059		(1,065)
	Corporate securities				66,827		(1,578)		42,230		(1,006)		109,057		(2,584)
	Residential mortgage-backed securities				75,826		(540)		104,754		(1,266)		180,580		(1,806)
	Commercial mortgage-backed securities				12,013		(155)		25,852		(437)		37,865		(592)
	Asset-backed securities				73,934		(119)		91,570		(919)		165,504		(1,038)
	Foreign government securities				51,165		(3,392)		1,242		(4)		52,407		(3,396)
	Foreign corporate securities				167,020		(12,267)		20,657		(3,373)		187,677		(15,640)
Equity securities					139,886		(12,696)		11,501		(3,440)		151,387		(16,136)
			Total	$	688,189	$	(31,389)	$	319,132	$	(10,930)	$	1,007,321	$	(42,319)

December 31, 2014
Fixed maturity securities
	U.S. government and government agency
		securities		$	14,813	$	(8)	$	11,236	$	(129)	$	26,049	$	(137)
	Fixed maturity securities of states,
		municipalities and political subdivisions			3,857		(21)		19,337		(139)		23,194		(160)
	Special purpose revenue bonds of states,
		municipalities and political subdivisions			4,041		(19)		100,947		(967)		104,988		(986)
	Corporate securities				211,111		(2,498)		48,091		(2,158)		259,202		(4,656)
	Residential mortgage-backed securities				37,434		(100)		226,256		(3,879)		263,690		(3,979)
	Commercial mortgage-backed securities				5,228		(26)		99,868		(2,006)		105,096		(2,032)
	Asset-backed securities				181,579		(1,245)		78,797		(1,347)		260,376		(2,592)
	Foreign government securities				55,280		(1,498)		7,187		(56)		62,467		(1,554)
	Foreign corporate securities				182,163		(4,587)		21,571		(2,306)		203,734		(6,893)
Equity securities					111,251		(17,839)		3,934		(948)		115,185		(18,787)
			Total	$	806,757	$	(27,841)	$	617,224	$	(13,935)	$	1,423,981	$	(41,776)

Amortized cost and fair value of fixed maturity securities investments classified by contractual maturity date

		Cost or amortized cost		Fair value
Due in 1 year or less		$	156,470	$	153,783
Due after 1 year through 5 years			1,117,553		1,138,249
Due after 5 years through 10 years			1,322,979		1,400,954
Due after 10 years through 15 years			884,731		945,028
Due after 15 years			1,002,717		1,060,938
	Securities with contractual maturities		4,484,450		4,698,952
Mortgage-backed and asset-backed securities			1,707,586		1,753,492
	Total fixed maturity securities	$	6,192,036	$	6,452,444

Realized pretax gains (losses) on the sale of investments

			Three months ended March 31,
			2015		2014
Gains
	Fixed maturity securities		$	13,876	$	1,132
	Equity securities			10,311		24,438
		Total gains		24,187		25,570
Losses
	Fixed maturity securities			(1,472)		(2,155)
	Equity securities			(9,529)		(3,169)
		Total losses		(11,001)		(5,324)
Net
	Fixed maturity securities			12,404		(1,023)
	Equity securities			782		21,269
		Net realized investment gain (loss)	$	13,186	$	20,246