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Fair Value of Assets and Liabilities Fair Value of Assets and Liabilities (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Disclosures [Abstract]

Schedule Of Fair Value Assets and Liabilities Measured on Recurring Basis Table Text Block

Assets and liabilities measured at fair value on a recurring basis as of June 30, 2016 and December 31, 2015 are summarized below (dollars in thousands):

June 30, 2016:						Fair Value Measurements Using:
		Total				Level 1				Level 2				Level 3
Assets:
Fixed maturity securities – available-for-sale:
Corporate securities		$	19,543,237			$	252,082			$	17,993,773			$	1,297,382
Canadian and Canadian provincial governments		4,105,274				—				3,551,082				554,192
Residential mortgage-backed securities		1,292,778				—				1,126,799				165,979
Asset-backed securities		1,356,677				—				1,057,861				298,816
Commercial mortgage-backed securities		1,507,693				—				1,469,758				37,935
U.S. government and agencies		2,007,338				1,874,944				106,139				26,255
State and political subdivisions		605,942				—				570,696				35,246
Other foreign government supranational and foreign government-sponsored enterprises		2,742,037				289,633				2,438,698				13,706
Total fixed maturity securities – available-for-sale		33,160,976				2,416,659				28,314,806				2,429,511
Funds withheld at interest – embedded derivatives		(91,981		)		—				—				(91,981		)
Cash equivalents		213,556				213,556				—				—
Short-term investments		160,901				133,716				27,185				—
Other invested assets:
Non-redeemable preferred stock		61,103				48,030				13,073				—
Other equity securities		357,083				357,083				—				—
Derivatives:
Interest rate swaps		159,611				—				159,611				—
Foreign currency forwards		1,498				—				1,498				—
CPI swaps		(613		)		—				(613		)		—
Credit default swaps		5,625				—				5,625				—
Equity options		43,543				—				43,543				—
Foreign currency swaps		101,132				—				101,132				—
FVO contractholder-directed unit-linked investments		195,842				194,604				1,238				—
Other		934				934				—				—
Total other invested assets		925,758				600,651				325,107				—
Other assets - longevity swaps		17,781				—				—				17,781
Total		$	34,386,991			$	3,364,582			$	28,667,098			$	2,355,311
Liabilities:
Interest sensitive contract liabilities – embedded derivatives		$	1,125,380			$	—			$	—			$	1,125,380
Other liabilities:
Derivatives:
Interest rate swaps		26,632				—				26,632				—
Foreign currency forwards		2,527				—				2,527				—
Credit default swaps		2,290				—				2,290				—
Equity options		(10,779		)		—				(10,779		)		—
Foreign currency swaps		2,109				—				2,109				—
Mortality swaps		1,997				—				—				1,997
Total		$	1,150,156			$	—			$	22,779			$	1,127,377

December 31, 2015:						Fair Value Measurements Using:
		Total				Level 1				Level 2				Level 3
Assets:
Fixed maturity securities – available-for-sale:
Corporate securities		$	17,708,156			$	269,039			$	16,212,147			$	1,226,970
Canadian and Canadian provincial governments		3,576,759				—				3,160,683				416,076
Residential mortgage-backed securities		1,311,477				—				980,828				330,649
Asset-backed securities		1,212,676				—				908,840				303,836
Commercial mortgage-backed securities		1,483,087				—				1,414,524				68,563
U.S. government and agencies		1,381,659				1,227,858				127,536				26,265
State and political subdivisions		511,014				—				472,672				38,342
Other foreign government, supranational and foreign government-sponsored enterprises		2,458,077				260,552				2,183,460				14,065
Total fixed maturity securities – available-for-sale		29,642,905				1,757,449				25,460,690				2,424,766
Funds withheld at interest – embedded derivatives		(76,698		)		—				—				(76,698		)
Cash equivalents		406,521				406,521				—				—
Short-term investments		530,773				524,946				5,827				—
Other invested assets:
Non-redeemable preferred stock		87,520				81,809				5,711				—
Other equity securities		38,342				38,342				—				—
Derivatives:
Interest rate swaps		71,882				—				71,882				—
Foreign currency forwards		20				—				20				—
CPI swaps		(292		)		—				(292		)		—
Credit default swaps		2,567				—				2,567				—
Equity options		40,644				—				40,644				—
Foreign currency swaps		141,357				—				141,357				—
FVO contractholder-directed unit-linked investments		197,547				195,317				2,230				—
Other		8,170				8,170				—				—
Total other invested assets		587,757				323,638				264,119				—
Other assets - longevity swaps		14,996				—				—				14,996
Total		$	31,106,254			$	3,012,554			$	25,730,636			$	2,363,064
Liabilities:
Interest sensitive contract liabilities – embedded derivatives		$	1,070,584			$	—			$	—			$	1,070,584
Other liabilities:
Derivatives:
Interest rate swaps		20,989				—				20,989				—
Foreign currency forwards		6,744				—				6,744				—
Credit default swaps		5,390				—				5,390				—
Equity options		(6,009		)		—				(6,009		)		—
Foreign currency swaps		(4,908		)		—				(4,908		)		—
Mortality swaps		2,619				—				—				2,619
Total		$	1,095,409			$	—			$	22,206			$	1,073,203

Fair Value Unobservable Input Measurements [Table Text Block]

The following table presents quantitative information about significant unobservable inputs used in Level 3 fair value measurements that are developed internally by the Company as of June 30, 2016 and December 31, 2015 (dollars in thousands):

	Estimated Fair Value						Valuation Technique		Unobservable Inputs		Range (Weighted Average)
	June 30, 2016			December 31, 2015							June 30, 2016			December 31, 2015
Assets:
Corporate securities	$167,602			$195,557			Market comparable securities		Liquidity premium		0-2% (1%)			0-2%  (1%)
U.S. government and agencies	26,255			26,265			Market comparable securities		Liquidity premium		0-1% (1%)			0-1%  (1%)
State and political subdivisions	4,941			4,770			Market comparable securities		Liquidity premium		1	%		1	%
Funds withheld at interest- embedded derivatives	(91,981	)		(76,698	)		Total return swap		Mortality		0-100%  (2%)			0-100%  (2%)
									Lapse		0-35%  (8%)			0-35%  (7%)
									Withdrawal		0-5%  (3%)			0-5%  (3%)
									CVA		0-5%  (1%)			0-5%  (1%)
									Crediting rate		2-4%  (2%)			2-4%  (3%)
Longevity swaps	17,781			14,996			Discounted cash flow		Mortality		0-100%  (2%)			0-100%  (2%)
									Mortality improvement		(10%)-10%  (3%)			(10%)-10%  (3%)
Liabilities:
Interest sensitive contract liabilities- embedded derivatives- indexed annuities	841,832			878,114			Discounted cash flow		Mortality		0-100%  (2%)			0-100% (2%)
									Lapse		0-35%  (8%)			0-35% (7%)
									Withdrawal		0-5%  (3%)			0-5% (3%)
									Option budget projection		2-4%  (2%)			2-4% (3%)
Interest sensitive contract liabilities- embedded derivatives- variable annuities	283,548			192,470			Discounted cash  flow		Mortality		0-100% (2%)			0-100% (2%)
									Lapse		0-25% (7%)			0-25% (7%)
									Withdrawal		0-7% (3%)			0-7% (3%)
									CVA		0-5% (1%)			0-5% (1%)
									Long-term volatility		0-27% (14%)			0-27% (14%)
Mortality swaps	1,997			2,619			Discounted cash flow		Mortality		0-100%  (1%)			0-100%  (1%)

Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block]

The following table presents quantitative information about significant unobservable inputs used in Level 3 fair value measurements that are developed internally by the Company as of June 30, 2016 and December 31, 2015 (dollars in thousands):

	Estimated Fair Value						Valuation Technique		Unobservable Inputs		Range (Weighted Average)
	June 30, 2016			December 31, 2015							June 30, 2016			December 31, 2015
Assets:
Corporate securities	$167,602			$195,557			Market comparable securities		Liquidity premium		0-2% (1%)			0-2%  (1%)
U.S. government and agencies	26,255			26,265			Market comparable securities		Liquidity premium		0-1% (1%)			0-1%  (1%)
State and political subdivisions	4,941			4,770			Market comparable securities		Liquidity premium		1	%		1	%
Funds withheld at interest- embedded derivatives	(91,981	)		(76,698	)		Total return swap		Mortality		0-100%  (2%)			0-100%  (2%)
									Lapse		0-35%  (8%)			0-35%  (7%)
									Withdrawal		0-5%  (3%)			0-5%  (3%)
									CVA		0-5%  (1%)			0-5%  (1%)
									Crediting rate		2-4%  (2%)			2-4%  (3%)
Longevity swaps	17,781			14,996			Discounted cash flow		Mortality		0-100%  (2%)			0-100%  (2%)
									Mortality improvement		(10%)-10%  (3%)			(10%)-10%  (3%)
Liabilities:
Interest sensitive contract liabilities- embedded derivatives- indexed annuities	841,832			878,114			Discounted cash flow		Mortality		0-100%  (2%)			0-100% (2%)
									Lapse		0-35%  (8%)			0-35% (7%)
									Withdrawal		0-5%  (3%)			0-5% (3%)
									Option budget projection		2-4%  (2%)			2-4% (3%)
Interest sensitive contract liabilities- embedded derivatives- variable annuities	283,548			192,470			Discounted cash  flow		Mortality		0-100% (2%)			0-100% (2%)
									Lapse		0-25% (7%)			0-25% (7%)
									Withdrawal		0-7% (3%)			0-7% (3%)
									CVA		0-5% (1%)			0-5% (1%)
									Long-term volatility		0-27% (14%)			0-27% (14%)
Mortality swaps	1,997			2,619			Discounted cash flow		Mortality		0-100%  (1%)			0-100%  (1%)

Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Level Transfers [Table Text Block]

The following tables present the transfers between Level 1 and Level 2 during the three and six months ended June 30, 2016 and 2015 (dollars in thousands):

		2016								2015
		Transfers from     Level 1 to Level 2				Transfers from     Level 2 to Level 1				Transfers from     Level 1 to Level 2				Transfers from     Level 2 to Level 1
Three months ended June 30:
Fixed maturity securities - available-for-sale:
Corporate securities		$	—			$	—			$	—			$	31,896
Six months ended June 30:
Fixed maturity securities - available-for-sale:
Corporate securities		$	—			$	—			$	625			$	36,996

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

The tables below provide a summary of the changes in fair value of Level 3 assets and liabilities for the three and six months ended June 30, 2016, as well as the portion of gains or losses included in income for the three and six months ended June 30, 2016 attributable to unrealized gains or losses related to those assets and liabilities still held at June 30, 2016 (dollars in thousands):

For the three months ended June 30, 2016:		Fixed maturity securities - available-for-sale
		Corporate securities				Canadian and Canadian provincial governments				Residential mortgage- backed securities				Asset-backed securities				Commercial     mortgage- backed securities				U.S. government and agencies
Fair value, beginning of period		$	1,243,660			$	487,383			$	333,253			$	285,220			$	63,574			$	25,880
Total gains/losses (realized/unrealized)
Included in earnings, net:
Investment income, net of related expenses		(592		)		3,049				116				252				490				(122		)
Investment related gains (losses), net		12				—				(1,891		)		823				(2,669		)		—
Interest credited		—				—				—				—				—				—
Included in other comprehensive income		30,391				63,760				3,839				2,793				453				461
Other revenues		—				—				—				—				—				—
Purchases(1)		72,982				—				42,913				59,779				—				144
Sales(1)		(901		)		—				(167,236		)		(30,181		)		(22,338		)		—
Settlements(1)		(47,461		)		—				(13,464		)		(4,196		)		(68		)		(108		)
Transfers into Level 3		5,023				—				—				18,398				—				—
Transfers out of Level 3		(5,732		)		—				(31,551		)		(34,072		)		(1,507		)		—
Fair value, end of period		$	1,297,382			$	554,192			$	165,979			$	298,816			$	37,935			$	26,255
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period
Included in earnings, net:
Investment income, net of related expenses		$	(608	)		$	3,049			$	530			$	187			$	485			$	(122	)
Investment related gains (losses), net		—				—				—				—				—				—
Interest credited		—				—				—				—				—				—

For the three months ended June 30, 2016 (continued):		Fixed maturity securities available-for-sale
		State and political subdivisions				Other foreign government, supranational and foreign government-sponsored enterprises				Funds withheld at interest- embedded derivatives				Other assets - longevity swaps				Interest sensitive contract liabilities embedded derivatives				Other liabilities - mortality swaps
Fair value, beginning of period		$	34,624			$	13,936			$	(168,948	)		$	15,806			$	(1,118,069	)		$	(3,043	)
Total gains/losses (realized/unrealized)
Included in earnings, net:
Investment income, net of related expenses		12				—				—				—				—				—
Investment related gains (losses), net		—				—				76,967				—				(28,137		)		—
Interest credited		—				—				—				—				(2,019		)		—
Included in other comprehensive income		837				95				—				(419		)		—				—
Other revenues		—				—				—				2,394				—				1,046
Purchases(1)		—				—				—				—				4,703				—
Sales(1)		—				—				—				—				—				—
Settlements(1)		(227		)		(325		)		—				—				18,142				—
Transfers into Level 3		—				—				—				—				—				—
Transfers out of Level 3		—				—				—				—				—				—
Fair value, end of period		$	35,246			$	13,706			$	(91,981	)		$	17,781			$	(1,125,380	)		$	(1,997	)
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period
Included in earnings, net:
Investment income, net of related expenses		$	12			$	—			$	—			$	—			$	—			$	—
Investment related gains (losses), net		—				—				76,967				—				(31,333		)		—
Other revenues		—				—				—				2,394				—				1,046
Interest credited		—				—				—				—				(20,162		)		—

For the six months ended June 30, 2016:		Fixed maturity securities - available-for-sale
		Corporate securities				Canadian and Canadian provincial governments				Residential mortgage- backed securities				Asset-backed securities				Commercial     mortgage- backed securities				U.S. government and agencies
Fair value, beginning of period		$	1,226,970			$	416,076			$	330,649			$	303,836			$	68,563			$	26,265
Total gains/losses (realized/unrealized)
Included in earnings, net:
Investment income, net of related expenses		(1,419		)		6,051				(371		)		426				1,133				(245		)
Investment related gains (losses), net		(21,856		)		—				(1,922		)		1,101				(3,289		)		—
Interest credited		—				—				—				—				—				—
Included in other comprehensive income		56,073				132,065				(493		)		(7,734		)		(2,359		)		1,057
Other revenues		—				—				—				—				—				—
Purchases(1)		140,578				—				72,228				97,050				1,545				257
Sales(1)		(10,483		)		—				(167,684		)		(38,681		)		(25,976		)		—
Settlements(1)		(96,955		)		—				(24,904		)		(7,921		)		(137		)		(1,079		)
Transfers into Level 3		10,206				—				—				24,796				—				—
Transfers out of Level 3		(5,732		)		—				(41,524		)		(74,057		)		(1,545		)		—
Fair value, end of period		$	1,297,382			$	554,192			$	165,979			$	298,816			$	37,935			$	26,255
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period
Included in earnings, net:
Investment income, net of related expenses		$	(1,428	)		$	6,051			$	42			$	350			$	1,031			$	(245	)
Investment related gains (losses), net		(21,726		)		—				—				—				—				—
Interest credited		—				—				—				—				—				—

For the six months ended June 30, 2016 (continued):		Fixed maturity securities available-for-sale
		State and political subdivisions				Other foreign government, supranational and foreign government-sponsored enterprises				Funds withheld at interest- embedded derivatives				Other assets - longevity swaps				Interest sensitive contract liabilities embedded derivatives				Other liabilities - mortality swaps
Fair value, beginning of period		$	38,342			$	14,065			$	(76,698	)		$	14,996			$	(1,070,584	)		$	(2,619	)
Total gains/losses (realized/unrealized)
Included in earnings, net:
Investment income, net of related expenses		195				—				—				—				—				—
Investment related gains (losses), net		—				—				(15,283		)		—				(91,077		)		—
Interest credited		—				—				—				—				(626		)		—
Included in other comprehensive income		1,171				288				—				304				—				—
Other revenues		—				—				—				2,481				—				622
Purchases(1)		—				—				—				—				2,035				—
Sales(1)		—				—				—				—				—				—
Settlements(1)		(258		)		(647		)		—				—				34,872				—
Transfers into Level 3		—				—				—				—				—				—
Transfers out of Level 3		(4,204		)		—				—				—				—				—
Fair value, end of period		$	35,246			$	13,706			$	(91,981	)		$	17,781			$	(1,125,380	)		$	(1,997	)
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period
Included in earnings, net:
Investment income, net of related expenses		$	195			$	—			$	—			$	—			$	—			$	—
Investment related gains (losses), net		—				—				(15,283		)		—				(96,811		)		—
Other revenues		—				—				—				2,481				—				622
Interest credited		—				—				—				—				(35,497		)		—

(1) The amount reported within purchases, sales and settlements is the purchase price (for purchases) and the sales/settlement proceeds (for sales and settlements) based upon the actual date purchased or sold/settled. Items purchased and sold/settled in the same period are excluded from the rollforward. The Company had no issuances during the period.

The tables below provide a summary of the changes in fair value of Level 3 assets and liabilities for the three and six months ended June 30, 2015, as well as the portion of gains or losses included in income for the three and six months ended June 30, 2015 attributable to unrealized gains or losses related to those assets and liabilities still held at June 30, 2015 (dollars in thousands):

For the three months ended June 30, 2015:		Fixed maturity securities - available-for-sale
		Corporate securities				Residential mortgage- backed securities				Asset-backed securities				Commercial     mortgage- backed securities				U.S. government and agencies				State and political subdivisions
Fair value, beginning of period		$	1,286,979			$	192,579			$	609,436			$	93,869			$	27,756			$	41,875
Total gains/losses (realized/unrealized)
Included in earnings, net:
Investment income, net of related expenses		(1,051		)		(156		)		1,511				677				112				8
Investment related gains (losses), net		(166		)		17				283				(770		)		(10		)		(5		)
Interest credited		—				—				—				—				—				—
Included in other comprehensive income		(16,902		)		(1,291		)		(301		)		(386		)		(559		)		(1,480		)
Purchases(1)		76,982				118,868				44,181				42				154				—
Sales(1)		(3,949		)		—				(1,615		)		(2,000		)		—				—
Settlements(1)		(103,696		)		(8,617		)		(63,751		)		(893		)		(94		)		(212		)
Transfers into Level 3		413				1,800				—				—				—				—
Transfers out of Level 3		(1,293		)		(4,824		)		(9,234		)		(12,720		)		—				—
Fair value, end of period		$	1,237,317			$	298,376			$	580,510			$	77,819			$	27,359			$	40,186
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period
Included in earnings, net:
Investment income, net of related expenses		$	(997	)		$	(156	)		$	706			$	640			$	112			$	8
Investment related gains (losses), net		—				—				—				—				—				—
Interest credited		—				—				—				—				—				—

For the three months ended June 30, 2015 (continued):		Fixed maturity securities available-for-sale
		Other foreign government, supranational and foreign government-sponsored enterprises				Funds withheld at interest- embedded derivatives				Other invested assets - non-redeemable preferred stock				Other assets - longevity swaps				Interest sensitive contract liabilities embedded derivatives				Other liabilities - mortality swaps
Fair value, beginning of period		$	15,202			$	19,769			$	7,992			$	8,602			$	(1,132,271	)		$	(1,276	)
Total gains/losses (realized/unrealized)
Included in earnings, net:
Investment income, net of related expenses		—				—				—				—				—				—
Investment related gains (losses), net		—				(23,098		)		—				—				50,878				—
Interest credited		—				—				—				—				8,080				—
Included in other comprehensive income		(232		)		—				(104		)		340				—				—
Other revenues		—				—				—				1,911				—				(478		)
Purchases(1)		—				—				4,500				—				(13,924		)		—
Sales(1)		—				—				—				—				—				—
Settlements(1)		(313		)		—				—				—				18,083				—
Transfers into Level 3		—				—				—				—				—				—
Transfers out of Level 3		—				—				—				—				—				—
Fair value, end of period		$	14,657			$	(3,329	)		$	12,388			$	10,853			$	(1,069,154	)		$	(1,754	)
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period
Included in earnings, net:
Investment income, net of related expenses		$	—			$	—			$	—			$	—			$	—			$	—
Investment related gains (losses), net		—				(23,098		)		—				—				48,603				—
Other revenues		—				—				—				1,911				—				(478		)
Interest credited		—				—				—				—				(10,003		)		—

For the six months ended June 30, 2015:		Fixed maturity securities - available-for-sale
		Corporate securities				Residential mortgage- backed securities				Asset-backed securities				Commercial     mortgage- backed securities				U.S. government and agencies				State and political subdivisions
Fair value, beginning of period		$	1,310,427			$	188,094			$	572,960			$	86,746			$	28,529			$	42,711
Total gains/losses (realized/unrealized)
Included in earnings, net:
Investment income, net of related expenses		(1,854		)		(296		)		2,930				1,271				93				15
Investment related gains (losses), net		(571		)		(65		)		356				(683		)		(117		)		(9		)
Interest credited		—				—				—				—				—				—
Included in other comprehensive income		(10,833		)		(768		)		3,331				(696		)		(383		)		(1,455		)
Purchases(1)		113,882				130,307				85,172				42				275				—
Sales(1)		(3,949		)		(714		)		(8,971		)		(2,956		)		—				—
Settlements(1)		(163,296		)		(14,336		)		(67,873		)		(6,013		)		(1,038		)		(241		)
Transfers into Level 3		413				2,400				9,055				12,828				—				—
Transfers out of Level 3		(6,902		)		(6,246		)		(16,450		)		(12,720		)		—				(835		)
Fair value, end of period		$	1,237,317			$	298,376			$	580,510			$	77,819			$	27,359			$	40,186
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period
Included in earnings, net:
Investment income, net of related expenses		$	(1,800	)		$	(297	)		$	2,105			$	1,229			$	93			$	15
Investment related gains (losses), net		—				—				—				—				—				—
Interest credited		—				—				—				—				—				—

For the six months ended June 30, 2015 (continued):		Fixed maturity securities available-for-sale
		Other foreign government, supranational and foreign government-sponsored enterprises				Funds withheld at interest- embedded derivatives				Other invested assets - non-redeemable preferred stock				Other assets - longevity swaps				Interest sensitive contract liabilities embedded derivatives				Other liabilities - mortality swaps
Fair value, beginning of period		$	19,663			$	22,094			$	7,904			$	7,727			$	(1,085,166	)		$	(797	)
Total gains/losses (realized/unrealized)
Included in earnings, net:
Investment income, net of related expenses		—				—				—				—				—				—
Investment related gains (losses), net		—				(25,423		)		—				—				25,745				—
Policy acquisition costs and other insurance expenses		—				—				—				—				(21,246		)		—
Included in other comprehensive income		(50		)		—				(16		)		(605		)		—				—
Other revenues		—				—				—				3,731				—				(957		)
Purchases(1)		—				—				4,529				—				(25,568		)		—
Sales(1)		—				—				—				—				—				—
Settlements(1)		(623		)		—				—				—				—				—
Transfers into Level 3		—				—				—				—				37,081				—
Transfers out of Level 3		(4,333		)		—				(29		)		—				—				—
Fair value, end of period		$	14,657			$	(3,329	)		$	12,388			$	10,853			$	(1,069,154	)		$	(1,754	)
Unrealized gains and losses recorded in earnings for the period relating to those Level 3 assets and liabilities that were still held at the end of the period
Included in earnings, net:
Investment income, net of related expenses		$	—			$	—			$	—			$	—			$	—			$	—
Investment related gains (losses), net		—				(25,423		)		—				—				20,358				—
Other revenues		—				—				—				3,731				—				(957		)
Interest credited		—				—				—				—				(58,327		)		—

(1) The amount reported within purchases, sales and settlements is the purchase price (for purchases) and the sales/settlement proceeds (for sales and settlements) based upon the actual date purchased or sold/settled. Items purchased and sold/settled in the same period are excluded from the rollforward. The Company had no issuances during the period.

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table Text Block]

The following table presents information for assets measured at estimated fair value on a nonrecurring basis during the periods presented; they are subject to fair value adjustments only in certain circumstances (for example, when there is evidence of impairment). The estimated fair values for these assets were determined using significant unobservable inputs (Level 3).

		Carrying Value After Measurement								Net Investment Gains (Losses)
		At June 30,								Three months ended June 30,								Six months ended June 30,
(dollars in thousands)		2016				2015				2016				2015				2016				2015
Mortgage loans(1)		$	6,993			$	5,850			$	(400	)		$	(11	)		$	(702	)		$	39
Limited partnership interests(2)		4,460				13,667				(112		)		—				(2,039		)		(4,509		)

(1) Mortgage loans — The impaired mortgage loans presented above were written down to their estimated fair values at the date the impairments were recognized and are reported as losses above. Subsequent improvements in estimated fair value on previously impaired loans recorded through a reduction in the previously established valuation allowance are reported as gains above. Nonrecurring fair value adjustments on mortgage loans are based on the fair value of underlying collateral or discounted cash flows.

(2) Limited partnership interests — The impaired limited partnership interests presented above were accounted for using the cost method. Impairments on these cost method investments were recognized at estimated fair value determined using the net asset values of the Company’s ownership interest as provided in the financial statements of the investees. The market for these investments has limited activity and price transparency.

Financial Instruments Carrying Amounts And Estimated Fair Value [Table Text Block]

The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments, which were not measured at fair value on a recurring basis, at June 30, 2016 and December 31, 2015 (dollars in thousands). This table excludes any payables or receivables for collateral under repurchase agreements and other transactions. The estimated fair value of the excluded amount approximates carrying value as they equal the amount of cash collateral received/paid.

June 30, 2016:		Carrying Value				Estimated  Fair Value				Fair Value Measurement Using:
										Level 1				Level 2				Level 3				NAV
Assets:
Mortgage loans on real estate		$	3,377,039			$	3,502,098			$	—			$	—			$	3,502,098			$	—
Policy loans		1,445,410				1,445,410				—				1,445,410				—				—
Funds withheld at interest(1)		5,987,794				6,368,471				—				—				6,368,471				—
Cash and cash equivalents(2)		820,773				820,773				820,773				—				—				—
Short-term investments(2)		35,078				35,078				35,078				—				—				—
Other invested assets(2)		383,295				409,054				4,297				36,151				86,092				282,514
Accrued investment income		368,926				368,926				—				368,926				—				—
Liabilities:
Interest-sensitive contract liabilities(1)		$	10,058,118			$	10,650,840			$	—			$	—			$	10,650,840			$	—
Short-term debt		299,807				308,457				—				—				308,457				—
Long-term debt		2,788,473				2,954,981				—				—				2,954,981				—
Collateral finance and securitization notes		870,482				790,304				—				—				790,304				—
December 31, 2015:		Carrying Value				Estimated Fair Value				Fair Value Measurement Using:
										Level 1				Level 2				Level 3				NAV
Assets:
Mortgage loans on real estate		$	3,129,951			$	3,197,808			$	—			$	—			$	3,197,808			$	—
Policy loans		1,468,796				1,468,796				—				1,468,796				—				—
Funds withheld at interest(1)		5,956,380				6,311,780				—				—				6,311,780				—
Cash and cash equivalents(2)		1,118,754				1,118,754				1,118,754				—				—				—
Short-term investments(2)		27,511				27,511				27,511				—				—				—
Other invested assets(2)		399,799				444,342				4,445				34,886				111,412				293,599
Accrued investment income		339,452				339,452				—				339,452				—				—
Liabilities:
Interest-sensitive contract liabilities(1)		$	9,746,870			$	9,841,576			$	—			$	—			$	9,841,576			$	—
Long-term debt		2,297,548				2,415,119				—				—				2,415,119				—
Collateral finance and securitization notes		899,161				791,275				—				—				791,275				—

(1) Carrying values presented herein differ from those presented in the condensed consolidated balance sheets because certain items within the respective financial statement caption are embedded derivatives and are measured at fair value on a recurring basis.

(2) Carrying values presented herein differ from those presented in the condensed consolidated balance sheets because certain items within the respective financial statement caption are measured at fair value on a recurring basis.

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