Investments (Tables)

3 Months Ended

Mar. 31, 2014

Investment [Abstract]

Fixed Maturity & Equity Securities Available For Sale

		Cost or		Gross		Gross
		amortized		unrealized		unrealized
		cost		gain		loss		Fair value
March 31, 2014
U.S. government and government agency securities		$	90,628	$	1,869	$	(400)	$	92,097
Fixed maturity securities of states, municipalities
	and political subdivisions		934,057		57,121		(2,361)		988,817
Special purpose revenue bonds of states, municipalities
	and political subdivisions		2,242,766		98,757		(20,207)		2,321,316
Corporate securities			1,172,614		45,490		(6,917)		1,211,187
Residential mortgage-backed securities			636,192		15,990		(14,893)		637,289
Commercial mortgage-backed securities			507,570		17,770		(8,808)		516,532
Asset-backed securities			235,420		419		(1,576)		234,263
Foreign government securities			90,791		3,542		(208)		94,125
	Total fixed maturity securities	$	5,910,038	$	240,958	$	(55,370)	$	6,095,626
Equity securities		$	391,779	$	41,779	$	(7,469)	$	426,089

		Cost or		Gross		Gross
		amortized		unrealized		unrealized
		cost		gain		loss		Fair value
December 31, 2013
U.S. government and government agency securities		$	91,047	$	2,157	$	(495)	$	92,709
Fixed maturity securities of states, municipalities
	and political subdivisions		941,580		50,885		(5,979)		986,486
Special purpose revenue bonds of states, municipalities
	and political subdivisions		2,240,412		71,541		(46,758)		2,265,195
Corporate securities			1,195,387		40,860		(11,009)		1,225,238
Residential mortgage-backed securities			622,766		15,289		(19,936)		618,119
Commercial mortgage-backed securities			502,069		16,155		(13,336)		504,888
Asset-backed securities			183,660		319		(1,587)		182,392
Foreign government securities			144,566		3,237		(357)		147,446
	Total fixed maturity securities	$	5,921,487	$	200,443	$	(99,457)	$	6,022,473
Equity securities		$	464,388	$	58,842	$	(5,764)	$	517,466

Gross unrealized losses and fair value of all available for sale fixed maturity securities loss 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, 2014
Fixed maturity securities
	U.S. government and government agency
			securities	$	25,035	$	(400)	$	-	$	-	$	25,035	$	(400)
	Fixed maturity securities of states,
		municipalities and political subdivisions			76,962		(1,924)		9,219		(437)		86,181		(2,361)
	Special purpose revenue bonds of states,
		municipalities and political subdivisions			472,150		(14,315)		102,936		(5,892)		575,086		(20,207)
	Corporate securities				247,972		(5,160)		36,873		(1,757)		284,845		(6,917)
	Residential mortgage-backed securities				283,429		(10,749)		41,796		(4,144)		325,225		(14,893)
	Commercial mortgage-backed securities				171,448		(7,196)		20,371		(1,612)		191,819		(8,808)
	Asset-backed securities				158,396		(1,576)		-		-		158,396		(1,576)
	Foreign government securities				29,280		(208)		-		-		29,280		(208)
Equity securities					99,429		(7,459)		252		(10)		99,681		(7,469)
			Total	$	1,564,101	$	(48,987)	$	211,447	$	(13,852)	$	1,775,548	$	(62,839)

				Less than 12 months				12 months or more				Total
						Unrealized				Unrealized				Unrealized
				Fair value		losses		Fair value		losses		Fair value		losses
December 31, 2013
Fixed maturity securities
	U.S. government and government agency
		securities		$	23,717	$	(495)	$	0	$	0	$	23,717	$	(495)
	Fixed maturity securities of states,
		municipalities and political subdivisions			136,160		(5,277)		8,997		(702)		145,157		(5,979)
	Special purpose revenue bonds of states,
		municipalities and political subdivisions			684,560		(35,832)		83,228		(10,926)		767,788		(46,758)
	Corporate securities				277,853		(8,202)		35,437		(2,807)		313,290		(11,009)
	Residential mortgage-backed securities				306,874		(15,861)		31,687		(4,075)		338,561		(19,936)
	Commercial mortgage-backed securities				203,347		(12,611)		4,915		(725)		208,262		(13,336)
	Asset-backed securities				126,922		(1,587)		0		0		126,922		(1,587)
	Foreign government securities				78,182		(357)		0		0		78,182		(357)
Equity securities					75,620		(5,437)		7,016		(327)		82,636		(5,764)
			Total	$	1,913,235	$	(85,659)	$	171,280	$	(19,562)	$	2,084,515	$	(105,221)

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		$	184,280	$	188,085
Due after 1 year through 5 years			1,010,609		1,056,776
Due after 5 years through 10 years			1,427,804		1,497,909
Due after 10 years through 15 years			993,477		1,029,110
Due after 15 years			914,686		935,662
	Securities with contractual maturities		4,530,856		4,707,542
Mortgage-backed and asset-backed securities			1,379,182		1,388,084
	Total fixed maturity securities	$	5,910,038	$	6,095,626

Realized pretax gains (losses) on the sale of investments

			Three months ended March 31,
			2014		2013
Gains
	Fixed maturity securities		$	2,015	$	4,591
	Equity securities			24,438		1,340
	Other investments			0		4,528
		Total gains		26,453		10,459
Losses
	Fixed maturity securities			(3,038)		(1,775)
	Equity securities			(3,169)		(114)
		Total losses		(6,207)		(1,889)
Net
	Fixed maturity securities			(1,023)		2,816
	Equity securities			21,269		1,226
	Other investments			0		4,528
		Net realized investment gain	$	20,246	$	8,570