Investments (Tables)

3 Months Ended

Mar. 31, 2013

Investments [Abstract]

Summary Of Unrealized Appreciation (Depreciation) Of Available For Sale, Fixed Maturity And Equity Security Investments

	At March 31, 2013
	Amortized		Unrealized		Unrealized			Market
(Dollars in thousands)	Cost		Appreciation		Depreciation			Value
Fixed maturity securities
U.S. Treasury securities and obligations of
U.S. government agencies and corporations	$	75,235	$	1,398	$	(696	)	$	75,937
Obligations of U.S. states and political subdivisions		1,100,226		71,375		(2,062	)		1,169,539
Corporate securities		1,593,973		62,251		(4,353	)		1,651,871
Asset-backed securities		46,837		2,290		-			49,127
Mortgage-backed securities
Commercial		45,094		7,165		-			52,259
Agency residential		757,378		11,916		(4,678	)		764,616
Non-agency residential		1,324		172		(23	)		1,473
Foreign government securities		720,011		50,070		(3,580	)		766,501
Foreign corporate securities		1,040,309		45,837		(6,006	)		1,080,140
Total fixed maturity securities	$	5,380,387	$	252,474	$	(21,398	)	$	5,611,463
Equity securities	$	15	$	-	$	-		$	15

	At December 31, 2012
	Amortized		Unrealized		Unrealized			Market
(Dollars in thousands)	Cost		Appreciation		Depreciation			Value
Fixed maturity securities
U.S. Treasury securities and obligations of
U.S. government agencies and corporations	$	77,611	$	1,448	$	(869	)	$	78,190
Obligations of U.S. states and political subdivisions		1,214,990		78,096		(1,123	)		1,291,963
Corporate securities		1,510,186		61,137		(6,471	)		1,564,852
Asset-backed securities		44,070		2,417		-			46,487
Mortgage-backed securities
Commercial		45,157		7,534		(67	)		52,624
Agency residential		672,724		12,722		(1,724	)		683,722
Non-agency residential		1,933		429		(33	)		2,329
Foreign government securities		732,277		51,461		(3,735	)		780,003
Foreign corporate securities		990,671		46,850		(6,281	)		1,031,240
Total fixed maturity securities	$	5,289,619	$	262,094	$	(20,303	)	$	5,531,410
Equity securities	$	15	$	-	$	(2	)	$	13

Summary Of Pre-Tax Cumulative Unrealized Appreciation (Depreciation) On Corporate Securities

(Dollars in thousands)	At March 31, 2013		At December 31, 2012
Pre-tax cumulative unrealized appreciation (depreciation)	$	302	$	399

Summary Of Amortized Cost And Market Value Of Fixed Maturity Securities, By Contractual Maturity

	At March 31, 2013				At December 31, 2012
	Amortized		Market		Amortized		Market
(Dollars in thousands)	Cost		Value		Cost		Value
Fixed maturity securities – available for sale
Due in one year or less	$	303,216	$	303,754	$	329,474	$	330,149
Due after one year through five years		2,537,939		2,631,420		2,380,093		2,462,430
Due after five years through ten years		959,270		1,006,214		1,008,653		1,064,579
Due after ten years		729,329		802,600		807,515		889,090
Asset-backed securities		46,837		49,127		44,070		46,487
Mortgage-backed securities
Commercial		45,094		52,259		45,157		52,624
Agency residential		757,378		764,616		672,724		683,722
Non-agency residential		1,324		1,473		1,933		2,329
Total fixed maturity securities	$	5,380,387	$	5,611,463	$	5,289,619	$	5,531,410

Summary Of Changes In Net Unrealized Appreciation (Depreciation) For The Company's Investments

	Three Months Ended
	March 31,
(Dollars in thousands)	2013			2012
Increase (decrease) during the period between the market value and cost
of investments carried at market value, and deferred taxes thereon:
Fixed maturity securities	$	(10,618	)	$	14,055
Fixed maturity securities, other-than-temporary impairment		(97	)		(20	)
Equity securities		1			2
Change in unrealized  appreciation (depreciation), pre-tax		(10,714	)		14,037
Deferred tax benefit (expense)		3,716			(4,920	)
Deferred tax benefit (expense), other-than-temporary impairment		34			7
Change in unrealized appreciation (depreciation),
net of deferred taxes, included in stockholder's equity	$	(6,964	)	$	9,124

Summary Of Aggregate Market Value And Gross Unrealized Depreciation Of Fixed Maturity And Equity Securities, By Security Type

	Duration of Unrealized Loss at March 31, 2013 By Security Type
	Less than 12 months					Greater than 12 months					Total
			Gross					Gross					Gross
			Unrealized					Unrealized					Unrealized
(Dollars in thousands)	Market Value		Depreciation			Market Value		Depreciation			Market Value		Depreciation
Fixed maturity securities - available for sale
U.S. Treasury securities and obligations of
U.S. government agencies and corporations	$	5,333	$	(19	)	$	6,030	$	(677	)	$	11,363	$	(696	)
Obligations of U.S. states and political subdivisions		67,022		(2,007	)		4,930		(55	)		71,952		(2,062	)
Corporate securities		112,551		(946	)		53,848		(3,407	)		166,399		(4,353	)
Asset-backed securities		-		-			-		-			-		-
Mortgage-backed securities
Commercial		-		-			-		-			-		-
Agency residential		322,361		(3,902	)		70,171		(776	)		392,532		(4,678	)
Non-agency residential		-		-			411		(23	)		411		(23	)
Foreign government securities		7,849		(111	)		34,454		(3,469	)		42,303		(3,580	)
Foreign corporate securities		80,003		(755	)		74,027		(5,251	)		154,030		(6,006	)
Total fixed maturity securities	$	595,119	$	(7,740	)	$	243,871	$	(13,658	)	$	838,990	$	(21,398	)
Equity securities		-		-			15		-			15		-
Total	$	595,119	$	(7,740	)	$	243,886	$	(13,658	)	$	839,005	$	(21,398	)

	Duration of Unrealized Loss at December 31, 2012 By Security Type
	Less than 12 months					Greater than 12 months					Total
			Gross					Gross					Gross
			Unrealized					Unrealized					Unrealized
(Dollars in thousands)	Market Value		Depreciation			Market Value		Depreciation			Market Value		Depreciation
Fixed maturity securities - available for sale
U.S. Treasury securities and obligations of
U.S. government agencies and corporations	$	8,058	$	(292	)	$	3,386	$	(577	)	$	11,444	$	(869	)
Obligations of U.S. states and political subdivisions		38,754		(1,072	)		5,781		(51	)		44,535		(1,123	)
Corporate securities		122,138		(1,566	)		62,492		(4,905	)		184,630		(6,471	)
Asset-backed securities		-		-			-		-			-		-
Mortgage-backed securities
Commercial		-		-			10,729		(67	)		10,729		(67	)
Agency residential		177,336		(1,042	)		54,595		(682	)		231,931		(1,724	)
Non-agency residential		-		-			446		(33	)		446		(33	)
Foreign government securities		13,958		(105	)		34,355		(3,630	)		48,313		(3,735	)
Foreign corporate securities		44,945		(565	)		53,672		(5,716	)		98,617		(6,281	)
Total fixed maturity securities	$	405,189	$	(4,642	)	$	225,456	$	(15,661	)	$	630,645	$	(20,303	)
Equity securities		-		-			13		(2	)		13		(2	)
Total	$	405,189	$	(4,642	)	$	225,469	$	(15,663	)	$	630,658	$	(20,305	)

Summary Of Aggregate Market Value And Gross Unrealized Depreciation Of Fixed Maturity And Equity Securities, By Contractual Maturity

	Duration of Unrealized Loss at March 31, 2013 By Maturity
	Less than 12 months					Greater than 12 months					Total
			Gross					Gross					Gross
			Unrealized					Unrealized					Unrealized
(Dollars in thousands)	Market Value		Depreciation			Market Value		Depreciation			Market Value		Depreciation
Fixed maturity securities
Due in one year or less	$	845	$	(4	)	$	20,952	$	(3,170	)	$	21,797	$	(3,174	)
Due in one year through five years		148,957		(1,065	)		103,911		(8,230	)		252,868		(9,295	)
Due in five years through ten years		48,859		(661	)		30,786		(961	)		79,645		(1,622	)
Due after ten years		74,097		(2,108	)		17,640		(498	)		91,737		(2,606	)
Asset-backed securities		-		-			-		-			-		-
Mortgage-backed securities		322,361		(3,902	)		70,582		(799	)		392,943		(4,701	)
Total fixed maturity securities	$	595,119	$	(7,740	)	$	243,871	$	(13,658	)	$	838,990	$	(21,398	)

	Duration of Unrealized Loss at December 31, 2012 By Maturity
	Less than 12 months					Greater than 12 months					Total
			Gross					Gross					Gross
			Unrealized					Unrealized					Unrealized
(Dollars in thousands)	Market Value		Depreciation			Market Value		Depreciation			Market Value		Depreciation
Fixed maturity securities
Due in one year or less	$	5,875	$	(24	)	$	19,291	$	(2,833	)	$	25,166	$	(2,857	)
Due in one year through five years		103,313		(1,671	)		110,161		(10,564	)		213,474		(12,235	)
Due in five years through ten years		57,225		(678	)		16,385		(1,008	)		73,610		(1,686	)
Due after ten years		61,440		(1,227	)		13,849		(474	)		75,289		(1,701	)
Asset-backed securities		-		-			-		-			-		-
Mortgage-backed securities		177,336		(1,042	)		65,770		(782	)		243,106		(1,824	)
Total fixed maturity securities	$	405,189	$	(4,642	)	$	225,456	$	(15,661	)	$	630,645	$	(20,303	)

Summary Of Components Of Net Investment Income

	Three Months Ended
	March 31,
(Dollars in thousands)	2013			2012
Fixed maturities	$	53,899		$	54,821
Equity securities		7,731			10,305
Short-term investments and cash		266			128
Other invested assets
Limited partnerships		11,348			11,612
Dividends from Parent's shares		4,666			4,666
Other		2,320			1,518
Gross investment income before adjustments		80,230			83,050
Funds held interest income (expense)		2,418			1,948
Gross investment income		82,648			84,998
Investment expenses		(5,779	)		(3,756	)
Net investment income	$	76,869		$	81,242

Summary Of Components Of Net Realized Capital Gains (Losses)

	Three Months Ended
	March 31,
(Dollars in thousands)	2013			2012
Fixed maturity securities, market value:
Other-than-temporary impairments	$	-		$	(5,674	)
Gains (losses) from sales		2,089			1,501
Fixed maturity securities, fair value:
Gain (losses) from sales		(58	)		5,207
Gains (losses) from fair value adjustments		84			3,031
Equity securities, market value:
Gains (losses) from sales		-			-
Equity securities, fair value:
Gains (losses) from sales		8,083			22,317
Gains (losses) from fair value adjustments		106,069			67,820
Other invested assets, fair value:
Gains (losses) from fair value adjustments		193,525			81,939
Short-term investment gains (losses)		14			-
Total net realized capital gains (losses)	$	309,806		$	176,141

Summary Of Gross Gains (Losses) From Sales Of Fixed Maturity And Equity Securities

	Three Months Ended
	March 31,
(Dollars in thousands)	2013			2012
Proceeds from sales of fixed maturity securities	$	170,598		$	143,417
Gross gains from sales		3,811			8,988
Gross losses from sales		(1,780	)		(2,280	)
Proceeds from sales of equity securities	$	103,828		$	239,540
Gross gains from sales		8,869			26,826
Gross losses from sales		(786	)		(4,509	)