Consolidated Condensed Schedule Of Investments (Financial Derivatives) (USD $)	12 Months Ended
	Dec. 31, 2014 contracts		Dec. 31, 2013 contracts
Investment Holdings, Other than Securities [Line Items]
Derivative Asset	$ 80,029,000	[1]	$ 59,664,000	[1]
Derivative Liabilities	(66,116,000)	[1]	(44,791,000)	[1]
Net cost	61,560,000		50,533,000
Net proceeds	(33,555,000)		(29,746,000)
Eurodollar Future [Member]
Investment Holdings, Other than Securities [Line Items]
Future contract notional	1,000,000		1,000,000
Future contract	1		1
Long US Treasury Note Futures [Member]
Investment Holdings, Other than Securities [Line Items]
Number of contracts	1,346		1,847
Purchased Options on U.S. Treasury Futures [Member]
Investment Holdings, Other than Securities [Line Items]
Number of contracts	110
Financial Derivatives - Assets [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Asset, Notional Amount	1,401,261,000
Derivative Asset	80,029,000	[2],[3]	59,664,000	[2],[4]
Investment owned as a percentage of equity	10.15%	[2],[3],[5]	9.53%	[2],[4],[5]
Net cost	61,560,000	[2],[3]	50,533,000	[2],[4]
Financial Derivatives - Assets [Member] | Long Credit Default Swap On Asset Backed Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[2],[3],[6]	Credit	[2],[4],[7]
Derivative Asset, Notional Amount	3,734,000	[2],[3],[6]	1,990,000	[2],[4],[7]
Range of expiration dates			2037-12	[2],[4],[7]
Derivative Asset	61,000	[2],[3],[6]	61,000	[2],[4],[7]
Net proceeds	(249,000)	[2],[3],[6]	(217,000)	[2],[4],[7]
Financial Derivatives - Assets [Member] | Long Credit Default Swap On Asset Backed Indices [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2037-12	[2],[3],[6]
Financial Derivatives - Assets [Member] | Long Credit Default Swap On Asset Backed Indices [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2063-05	[2],[3],[6]
Financial Derivatives - Assets [Member] | Long Credit Default Swap On Corporate Bond Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[2],[3],[6]	Credit	[2],[4],[8]
Derivative Asset, Notional Amount	311,983,000	[2],[3],[6]	70,425,000	[2],[4],[8]
Range of expiration dates			2018-12	[2],[4],[8]
Derivative Asset	35,865,000	[2],[3],[6]	14,273,000	[2],[4],[8]
Net cost	37,428,000	[2],[3],[6]	13,248,000	[2],[4],[8]
Financial Derivatives - Assets [Member] | Long Credit Default Swap On Corporate Bond Indices [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2017-12	[2],[3],[6]
Financial Derivatives - Assets [Member] | Long Credit Default Swap On Corporate Bond Indices [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2019-12	[2],[3],[6]
Financial Derivatives - Assets [Member] | Long Interest Rate Swaps [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[2],[3],[9]	Interest Rates	[2],[4],[9]
Derivative Asset, Notional Amount	1,017,067,000	[2],[3],[9]	153,100,000	[2],[4],[9]
Derivative Asset	23,243,000	[2],[3],[9]	1,978,000	[2],[4],[9]
Financial Derivatives - Assets [Member] | Long Interest Rate Swaps [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2016-07	[2],[3],[9]	2018-07	[2],[4],[9]
Financial Derivatives - Assets [Member] | Long Interest Rate Swaps [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2044-12	[2],[3],[9]	2023-09	[2],[4],[9]
Financial Derivatives - Assets [Member] | Long Total Return Swaps [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Equity Market	[10],[2],[3]	Equity Market	[10],[2],[4]
Derivative Asset, Notional Amount	875,000	[10],[2],[3]	3,044,000	[10],[2],[4]
Range of expiration dates	2015-06	[10],[2],[3]
Derivative Asset	8,000	[10],[2],[3]	4,000	[10],[2],[4]
Financial Derivatives - Assets [Member] | Long Total Return Swaps [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates			2014-06	[10],[2],[4]
Financial Derivatives - Assets [Member] | Long Total Return Swaps [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates			2015-06	[10],[2],[4]
Financial Derivatives - Assets [Member] | Short Credit Default Swap On Asset Backed Securities [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[11],[2],[3]	Credit	[12],[2],[4]
Derivative Asset, Notional Amount	(17,691,000)	[11],[2],[3]	(23,426,000)	[12],[2],[4]
Derivative Asset	11,387,000	[11],[2],[3]	16,646,000	[12],[2],[4]
Financial Derivatives - Assets [Member] | Short Credit Default Swap On Asset Backed Securities [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2034-09	[11],[2],[3]	2034-09	[12],[2],[4]
Financial Derivatives - Assets [Member] | Short Credit Default Swap On Asset Backed Securities [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2036-05	[11],[2],[3]	2036-05	[12],[2],[4]
Financial Derivatives - Assets [Member] | Short Credit Default Swap On Asset Backed Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[11],[2],[3]	Credit	[13],[2],[4]
Derivative Asset, Notional Amount	(50,981,000)	[11],[2],[3]	(72,422,000)	[13],[2],[4]
Derivative Asset	1,820,000	[11],[2],[3]	4,876,000	[13],[2],[4]
Financial Derivatives - Assets [Member] | Short Credit Default Swap On Asset Backed Indices [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2046-05	[11],[2],[3]	2046-05	[13],[2],[4]
Financial Derivatives - Assets [Member] | Short Credit Default Swap On Asset Backed Indices [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2052-10	[11],[2],[3]	2063-05	[13],[2],[4]
Financial Derivatives - Assets [Member] | Short Interest Rate Swaps [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[14],[2],[3]	Interest Rates	[14],[2],[4]
Derivative Asset, Notional Amount	(627,931,000)	[14],[2],[3]	(840,600,000)	[14],[2],[4]
Derivative Asset	5,411,000	[14],[2],[3]	21,575,000	[14],[2],[4]
Financial Derivatives - Assets [Member] | Short Interest Rate Swaps [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2016-10	[14],[2],[3]	2016-11	[14],[2],[4]
Financial Derivatives - Assets [Member] | Short Interest Rate Swaps [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2044-12	[14],[2],[3]	2043-08	[14],[2],[4]
Financial Derivatives - Assets [Member] | Short Total Return Swaps [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure			Equity Market	[10],[2],[4]
Derivative Asset, Notional Amount			(23,000)	[10],[2],[4]
Range of expiration dates			2015-09	[10],[2],[4]
Derivative Asset			0	[10],[2],[4]
Financial Derivatives - Assets [Member] | Swap [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Asset	77,795,000	[2],[3]	59,413,000	[2],[4]
Investment owned as a percentage of equity	9.87%	[2],[3],[5]	9.49%	[2],[4],[5]
Net cost	59,299,000	[2],[3]	50,039,000	[2],[4]
Financial Derivatives - Assets [Member] | Long US Treasury Note Futures [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[15],[2],[3]
Derivative Asset, Notional Amount	109,300,000	[15],[2],[3]
Range of expiration dates	2015-03	[15],[2],[3]
Derivative Asset	162,000	[15],[2],[3]
Financial Derivatives - Assets [Member] | Long Eurodollar Future [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[16],[2],[3]
Derivative Asset, Notional Amount	11,000,000	[16],[2],[3]
Range of expiration dates	2017-06	[16],[2],[3]
Derivative Asset	7,000	[16],[2],[3]
Financial Derivatives - Assets [Member] | Short Eurodollar Future [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[16],[2],[3]
Derivative Asset, Notional Amount	(520,000,000)	[16],[2],[3]
Derivative Asset	92,000	[16],[2],[3]
Financial Derivatives - Assets [Member] | Short Eurodollar Future [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2015-09	[16],[2],[3]
Financial Derivatives - Assets [Member] | Short Eurodollar Future [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2017-09	[16],[2],[3]
Financial Derivatives - Assets [Member] | Futures [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Asset	261,000	[2],[3]
Investment owned as a percentage of equity	0.03%	[2],[3],[5]
Financial Derivatives - Assets [Member] | Purchased Payer Swaption [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[17],[2],[3]
Derivative Asset, Notional Amount	822,800,000	[17],[2],[3]
Derivative Asset	344,000	[17],[2],[3]
Financial Derivatives - Assets [Member] | Purchased Payer Swaption [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2015-01	[17],[2],[3]
Financial Derivatives - Assets [Member] | Purchased Payer Swaption [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2015-06	[17],[2],[3]
Financial Derivatives - Assets [Member] | Option on CDS on Corporate Bond Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[18],[2],[3]	Credit	[18],[2],[4]
Derivative Asset, Notional Amount	364,400,000	[18],[2],[3]	22,588,000	[18],[2],[4]
Range of expiration dates			2014-06	[18],[2],[4]
Derivative Asset	625,000	[18],[2],[3]	190,000	[18],[2],[4]
Financial Derivatives - Assets [Member] | Option on CDS on Corporate Bond Indices [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2015-01	[18],[2],[3]
Financial Derivatives - Assets [Member] | Option on CDS on Corporate Bond Indices [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2015-03	[18],[2],[3]
Financial Derivatives - Assets [Member] | Purchased Options on U.S. Treasury Futures [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[19],[2],[3]
Derivative Asset, Notional Amount	11,000,000	[19],[2],[3]
Derivative Asset	20,000	[19],[2],[3]
Financial Derivatives - Assets [Member] | Purchased Options on U.S. Treasury Futures [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2015-02	[19],[2],[3]
Financial Derivatives - Assets [Member] | Purchased Options on U.S. Treasury Futures [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2015-03	[19],[2],[3]
Financial Derivatives - Assets [Member] | Options [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Asset	989,000	[2],[3]	251,000	[2],[4]
Investment owned as a percentage of equity	0.13%	[2],[3],[5]	0.04%	[2],[4],[5]
Net cost	2,161,000	[2],[3]	494,000	[2],[4]
Financial Derivatives - Assets [Member] | Short Currency Forward [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Currency	[2],[20],[3]
Derivative Asset, Notional Amount	(35,849,000)	[2],[20],[3]
Range of expiration dates	2015-03	[2],[20],[3]
Derivative Asset	884,000	[2],[20],[3]
Financial Derivatives - Assets [Member] | Forwards [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Asset	884,000	[2],[3]
Investment owned as a percentage of equity	0.11%	[2],[3],[5]
Financial Derivatives - Assets [Member] | Interest Rate Swaption [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure			Interest Rates	[17],[2],[4]
Derivative Asset, Notional Amount			15,000,000	[17],[2],[4]
Range of expiration dates			2014-04	[17],[2],[4]
Derivative Asset			61,000	[17],[2],[4]
Financial Derivatives - Assets [Member] | Warrant [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Equity Market	[2],[20],[21]
Derivative Asset, Notional Amount	1,554,000	[2],[21],[3]
Derivative Asset	100,000	[2],[21],[3]
Investment owned as a percentage of equity	0.01%	[2],[3],[5]
Net cost	100,000	[2],[3]
Financial Derivatives - Liabilities [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liability, Notional Amount	(973,998,000)
Derivative Liabilities	(66,116,000)	[2],[22],[3]	(44,791,000)	[2],[4]
Investment owned as a percentage of equity	(8.39%)	[2],[22],[3],[5]	(7.16%)	[2],[4],[5]
Net proceeds	(33,555,000)	[2],[22],[3]	(29,746,000)	[2],[4]
Financial Derivatives - Liabilities [Member] | Long Credit Default Swap On Asset Backed Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[2],[22],[3],[6]	Credit	[2],[4],[7]
Derivative Liability, Notional Amount	17,113,000	[2],[22],[3],[6]	44,082,000	[2],[4],[7]
Derivative Liabilities	(4,248,000)	[2],[22],[3],[6]	(11,866,000)	[2],[4],[7]
Net proceeds	(5,160,000)	[2],[22],[3],[6]	(14,331,000)	[2],[4],[7]
Financial Derivatives - Liabilities [Member] | Long Credit Default Swap On Asset Backed Indices [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2049-03	[2],[22],[3],[6]	2049-12	[2],[4],[7]
Financial Derivatives - Liabilities [Member] | Long Credit Default Swap On Asset Backed Indices [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2052-10	[2],[22],[3],[6]	2052-10	[2],[4],[7]
Financial Derivatives - Liabilities [Member] | Long Credit Default Swap On Corporate Bond Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[2],[22],[3],[6]	Credit	[2],[4],[8]
Derivative Liability, Notional Amount	3,756,000	[2],[22],[3],[6]	4,000,000	[2],[4],[8]
Range of expiration dates	2017-12	[2],[22],[3],[6]	2017-12	[2],[4],[8]
Derivative Liabilities	(1,231,000)	[2],[22],[3],[6]	(1,047,000)	[2],[4],[8]
Net proceeds	(1,200,000)	[2],[22],[3],[6]	(1,200,000)	[2],[4],[8]
Financial Derivatives - Liabilities [Member] | Long Credit Default Swap On Corporate Bonds [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[2],[22],[3],[6]
Derivative Liability, Notional Amount	4,428,000	[2],[22],[3],[6]
Derivative Liabilities	(2,706,000)	[2],[22],[3],[6]
Net proceeds	(1,951,000)	[2],[22],[3],[6]
Financial Derivatives - Liabilities [Member] | Long Credit Default Swap On Corporate Bonds [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2019-06	[2],[22],[3],[6]
Financial Derivatives - Liabilities [Member] | Long Credit Default Swap On Corporate Bonds [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2019-12	[2],[22],[3],[6]
Financial Derivatives - Liabilities [Member] | Long Interest Rate Swaps [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[2],[22],[3],[9]	Interest Rates	[2],[4],[9]
Derivative Liability, Notional Amount	230,410,000	[2],[22],[3],[9]	234,600,000	[2],[4],[9]
Derivative Liabilities	(678,000)	[2],[22],[3],[9]	(2,857,000)	[2],[4],[9]
Financial Derivatives - Liabilities [Member] | Long Interest Rate Swaps [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2016-10	[2],[22],[3],[9]	2017-10	[2],[4],[9]
Financial Derivatives - Liabilities [Member] | Long Interest Rate Swaps [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2044-12	[2],[22],[3],[9]	2043-07	[2],[4],[9]
Financial Derivatives - Liabilities [Member] | Long Total Return Swaps [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Equity Market	[10],[2],[22],[3]	Equity Market	[10],[2],[4]
Derivative Liability, Notional Amount	72,075,000	[10],[2],[22],[3]	47,974,000	[10],[2],[4]
Range of expiration dates			2015-06	[10],[2],[4]
Derivative Liabilities	(21,000)	[10],[2],[22],[3]	0	[10],[2],[4]
Financial Derivatives - Liabilities [Member] | Long Total Return Swaps [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2015-01	[10],[2],[22],[3]
Financial Derivatives - Liabilities [Member] | Long Total Return Swaps [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2016-11	[10],[2],[22],[3]
Financial Derivatives - Liabilities [Member] | Short Credit Default Swap On Asset Backed Securities [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[11],[2],[22],[3]	Credit	[12],[2],[4]
Derivative Liability, Notional Amount	(3,000,000)	[11],[2],[22],[3]	(3,000,000)	[12],[2],[4]
Range of expiration dates	2035-03	[11],[2],[22],[3]	2035-03	[12],[2],[4]
Derivative Liabilities	(239,000)	[11],[2],[22],[3]	(350,000)	[12],[2],[4]
Financial Derivatives - Liabilities [Member] | Short Credit Default Swap On Asset Backed Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[11],[2],[22],[3]
Derivative Liability, Notional Amount	(20,050,000)	[11],[2],[22],[3]
Range of expiration dates	2063-05	[11],[2],[22],[3]
Derivative Liabilities	(162,000)	[11],[2],[22],[3]
Financial Derivatives - Liabilities [Member] | Short Credit Default Swaps On Corporate Bond Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[11],[2],[22],[3]	Credit	[2],[23],[4]
Derivative Liability, Notional Amount	(352,945,000)	[11],[2],[22],[3]	(337,815,000)	[2],[23],[4]
Derivative Liabilities	(27,357,000)	[11],[2],[22],[3]	(23,902,000)	[2],[23],[4]
Financial Derivatives - Liabilities [Member] | Short Credit Default Swaps On Corporate Bond Indices [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2016-12	[11],[2],[22],[3]	2016-12	[2],[23],[4]
Financial Derivatives - Liabilities [Member] | Short Credit Default Swaps On Corporate Bond Indices [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2019-12	[11],[2],[22],[3]	2018-12	[2],[23],[4]
Financial Derivatives - Liabilities [Member] | Short Interest Rate Swaps [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[14],[2],[22],[3]	Interest Rates	[14],[2],[4]
Derivative Liability, Notional Amount	(1,024,716,000)	[14],[2],[22],[3]	(323,800,000)	[14],[2],[4]
Derivative Liabilities	(28,727,000)	[14],[2],[22],[3]	(2,207,000)	[14],[2],[4]
Financial Derivatives - Liabilities [Member] | Short Interest Rate Swaps [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2015-03	[14],[2],[22],[3]	2015-03	[14],[2],[4]
Financial Derivatives - Liabilities [Member] | Short Interest Rate Swaps [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2044-11	[14],[2],[22],[3]	2043-09	[14],[2],[4]
Financial Derivatives - Liabilities [Member] | Short Total Return Swaps [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure			Equity Market	[10],[2],[4]
Derivative Liability, Notional Amount			(10,374,000)	[10],[2],[4]
Derivative Liabilities			(67,000)	[10],[2],[4]
Financial Derivatives - Liabilities [Member] | Short Total Return Swaps [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates			2014-09	[10],[2],[4]
Financial Derivatives - Liabilities [Member] | Short Total Return Swaps [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates			2015-09	[10],[2],[4]
Financial Derivatives - Liabilities [Member] | Short Credit Default Swaps on Corporate Bonds [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[11],[2],[22],[3]
Derivative Liability, Notional Amount	(5,970,000)	[11],[2],[22],[3]
Derivative Liabilities	(247,000)	[11],[2],[22],[3]
Financial Derivatives - Liabilities [Member] | Short Credit Default Swaps on Corporate Bonds [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2019-09	[11],[2],[22],[3]
Financial Derivatives - Liabilities [Member] | Short Credit Default Swaps on Corporate Bonds [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2019-12	[11],[2],[22],[3]
Financial Derivatives - Liabilities [Member] | Swap [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities	(65,616,000)	[2],[22],[3]	(42,296,000)	[2],[4]
Investment owned as a percentage of equity	(8.32%)	[2],[22],[3],[5]	(6.76%)	[2],[4],[5]
Net proceeds	(33,400,000)	[2],[22],[3]	(29,746,000)	[2],[4]
Financial Derivatives - Liabilities [Member] | Long US Treasury Note Futures [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[15],[2],[22],[3]	Interest Rates	[2],[24],[4]
Derivative Liability, Notional Amount	50,600,000	[15],[2],[22],[3]	227,200,000	[2],[24],[4]
Range of expiration dates	2015-03	[15],[2],[22],[3]	2014-03	[2],[24],[4]
Derivative Liabilities	(13,000)	[15],[2],[22],[3]	(2,370,000)	[2],[24],[4]
Financial Derivatives - Liabilities [Member] | Short Eurodollar Future [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[16],[2],[22],[3]	Interest Rates	[16],[2],[4]
Derivative Liability, Notional Amount	(179,000,000)	[16],[2],[22],[3]	(14,000,000)	[16],[2],[4]
Derivative Liabilities	(68,000)	[16],[2],[22],[3]	(3,000)	[16],[2],[4]
Financial Derivatives - Liabilities [Member] | Short Eurodollar Future [Member] | Minimum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2015-03	[16],[2],[22],[3]	2014-03	[16],[2],[4]
Financial Derivatives - Liabilities [Member] | Short Eurodollar Future [Member] | Maximum [Member]
Investment Holdings, Other than Securities [Line Items]
Range of expiration dates	2015-06	[16],[2],[22],[3]	2015-09	[16],[2],[4]
Financial Derivatives - Liabilities [Member] | Futures [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities	(81,000)	[2],[22],[3]	(2,373,000)	[2],[4]
Investment owned as a percentage of equity	(0.01%)	[2],[22],[3],[5]	(0.38%)	[2],[4],[5]
Financial Derivatives - Liabilities [Member] | Purchased Payer Swaption [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[17],[2],[22],[3]
Derivative Liability, Notional Amount	260,000,000	[17],[2],[22],[3]
Range of expiration dates	2015-03	[17],[2],[22],[3]
Derivative Liabilities	(137,000)	[17],[2],[22],[3]
Financial Derivatives - Liabilities [Member] | Option on CDS on Corporate Bond Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Credit	[2],[22],[25],[3]
Derivative Liability, Notional Amount	(25,900,000)	[2],[22],[25],[3]
Range of expiration dates	2018-03	[2],[22],[25],[3]
Derivative Liabilities	(146,000)	[2],[22],[25],[3]
Financial Derivatives - Liabilities [Member] | Written Payer Swaption [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Interest Rates	[2],[22],[26],[3]
Derivative Liability, Notional Amount	(10,200,000)	[2],[22],[26],[3]
Range of expiration dates	2015-01	[2],[22],[26],[3]
Derivative Liabilities	0	[2],[22],[26],[3]
Financial Derivatives - Liabilities [Member] | Options [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities	(283,000)	[2],[22],[3]	(84,000)	[2],[4]
Investment owned as a percentage of equity	(0.04%)	[2],[22],[3],[5]	(0.01%)	[2],[4],[5]
Net proceeds	(155,000)	[2],[22],[3]
Financial Derivatives - Liabilities [Member] | Short Currency Forward [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Currency	[2],[20],[22],[3]	Currency	[2],[4]
Derivative Liability, Notional Amount	(117,000)	[2],[20],[22],[3]	(6,575,000)	[2],[4]
Range of expiration dates	2015-03	[2],[20],[22],[3]	2014-03	[2],[4]
Derivative Liabilities	0	[2],[20],[22],[3]	(38,000)	[2],[4]
Financial Derivatives - Liabilities [Member] | Forwards [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities	(136,000)	[2],[22],[3]	(38,000)	[2],[4]
Investment owned as a percentage of equity	(0.02%)	[2],[22],[3],[5]	(0.01%)	[2],[4],[5]
Financial Derivatives - Liabilities [Member] | Interest Rate Swaption [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure			Interest Rates	[2],[26],[4]
Derivative Liability, Notional Amount			(4,000,000)	[2],[26],[4]
Range of expiration dates			2014-04	[2],[26],[4]
Derivative Liabilities			(84,000)	[2],[26],[4]
Financial Derivatives - Liabilities [Member] | Long Currency Forward [Member]
Investment Holdings, Other than Securities [Line Items]
Primary risk exposure	Currency	[2],[22],[27],[3]
Derivative Liability, Notional Amount	9,518,000	[2],[22],[27],[3]
Range of expiration dates	2015-03	[2],[22],[27],[3]
Derivative Liabilities	(136,000)	[2],[22],[27],[3]
North America [Member] | Financial Derivatives - Assets [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Asset, Notional Amount	1,401,261,000
Derivative Asset	80,029,000
Investment owned as a percentage of equity	10.15%
Net cost	61,560,000
North America [Member] | Financial Derivatives - Liabilities [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liability, Notional Amount	(936,799,000)
Derivative Liabilities	(63,084,000)
Investment owned as a percentage of equity	(8.00%)
Net proceeds	(30,598,000)
Europe [Member] | Financial Derivatives - Assets [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Asset, Notional Amount	0
Derivative Asset	0
Investment owned as a percentage of equity	0.00%
Net cost	0
Europe [Member] | Financial Derivatives - Liabilities [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liability, Notional Amount	(37,199,000)
Derivative Liabilities	(3,032,000)
Investment owned as a percentage of equity	(0.39%)
Net proceeds	$ (2,957,000)
Affiliates of JP Morgan [Member] | Financial Derivatives - Liabilities [Member]
Investment Holdings, Other than Securities [Line Items]
Investment owned as a percentage of equity	(5.18%)

[1] In the Company's Consolidated Statement of Assets, Liabilities, and Equity, all balances associated with repurchase agreements, reverse repurchase agreements, and financial derivatives are presented on a gross basis.

[2] See Note 2 and Note 3 in Notes to Consolidated Financial Statements.

[3] The following table details the breakout by geographical region of long investments, investments sold short, repurchase agreements, financial derivatives–assets, and financial derivatives–liabilities.Region Current Principal/Notional Value/Number of Properties/Number of Shares Cost/(Proceeds) Fair Value Percent ofEquityLong Investments: (In thousands, Expressed in U.S. Dollars) North America 2,863,057 $2,038,249 $2,092,959 264.46 %Europe 69,724 69,360 64,611 9.16 %North America (Private Corporate Investments) n/a 14,717 14,512 1.84 %Total $2,122,326 $2,172,082 275.46 %Investments Sold Short: North America (TBAs and Government Debt) (1,159,703) $(1,230,478) $(1,234,248) (156.53)%Europe (Government Debt) (28,118) (32,008) (30,606) (3.88)%North America (Common Stock) (2,986) (27,605) (26,516) (3.36)%Total $(1,290,091) $(1,291,370) (163.77)%Repurchase Agreements: North America 140,248 $140,248 $140,248 17.78 %Europe 31,753 31,753 31,753 4.03 %Total 172,001 $172,001 $172,001 21.81 %Financial Derivatives–Assets: North America 1,401,261 $61,560 $80,029 10.15 %Europe — — — — %Total 1,401,261 $61,560 $80,029 10.15 %Financial Derivatives–Liabilities: North America (936,799) $(30,598) $(63,084) (8.00)%Europe (37,199) (2,957) (3,032) (0.39)%Total (973,998) $(33,555) $(66,116) (8.39)%

[4] The following table details the breakout by geographical region of long investments, investments sold short, and repurchase agreements. All financial derivatives were concentrated in North America.Region Current Principal/Notional Value/Number of Shares Cost/(Proceeds) Fair Value Percent ofEquityLong Investments: (In thousands, Expressed in U.S. Dollars) North America 2,470,650 $1,682,533 $1,724,370 275.44 %Europe 7,641 5,724 5,760 0.92 %Total 2,478,291 $1,688,257 $1,730,130 276.36 %Investments Sold Short: North America (TBAs and Government Debt) (804,888) $(833,656) $(831,564) (132.82)%Europe (Government Debt) (7,337) (7,633) (7,681) (1.23)%North America (Common Stock) (763) (6,313) (6,369) (1.02)%Total $(847,602) $(845,614) (135.07)%Repurchase Agreements: North America 19,675 $19,675 $19,675 3.15 %Europe 8,287 8,268 8,287 1.32 %Total 27,962 $27,943 $27,962 4.47 %

[5] Classification percentages are based on Total Equity.

[6] For long credit default swaps, the Company sold protection.

[7] For long credit default swaps on asset-backed indices, the Company sold protection.

[8] For long credit default swaps on corporate bond indices, the Company sold protection.

[9] For long interest rate swap contracts, a floating rate is being paid and a fixed rate is being received.

[10] Notional value represents number of underlying shares times the closing price of the underlying security.

[11] For short credit default swaps, the Company purchased protection.

[12] For short credit default swaps on asset-backed securities, the Company purchased protection.

[13] For short credit default swaps on asset-backed indices, the Company purchased protection.

[14] For short interest rate swap contracts, a fixed rate is being paid and a floating rate is being received.

[15] Notional value represents the total face amount of U.S. Treasury Notes underlying all contracts held; as of December 31, 2014, 1,346 contracts were held.

[16] Every $1,000,000 in notional value represents one contract.

[17] Represents the option on the part of the Company to enter into an interest rate swap whereby the Company would pay a fixed rate and receive a floating rate.

[18] Represents the option on the part of the Company to enter into a credit default swap on a corporate bond index whereby the Company would pay a fixed rate and receive credit protection payments.

[19] Represents the option on the part of the Company to enter into a futures contract with a counterparty; as of December 31, 2014, 110 contracts were held.

[20] Notional amount represents U.S. Dollars to be received by the Company at the maturity of the forward contract.

[21] Notional amount represents number of warrants.

[22] The following table shows the Company's swap liabilities by dealer as a percentage of Total Equity:Dealer/Parent Company Percent of EquityAffiliates of JP Morgan (5.18)%

[23] For short credit default swaps on corporate bond indices, the Company purchased protection.

[24] Notional value represents the total face amount of U.S. Treasury Notes underlying all contracts held; as of December 31, 2013 1,847 contracts were held.

[25] Represents the option on the part of a counterparty to enter into a credit default swap on a corporate bond index whereby the Company would receive a fixed rate and pay credit protection payments.

[26] Represents the option on the part of a counterparty to enter into an interest rate swap with the Company whereby the Company would receive a fixed rate and pay a floating rate.

[27] Notional amount represents U.S. Dollars to be paid by the Company at the maturity of the forward contract.