Consolidated Condensed Schedule Of Investments (Financial Derivatives)		12 Months Ended
		Dec. 31, 2016 USD ($) contracts		Dec. 31, 2015 USD ($) contracts
Investment Holdings, Other than Securities [Line Items]
Financial derivatives–assets, at fair value-	[1]	$ 35,595,000		$ 162,905,000
Derivative Liabilities	[1]	(18,687,000)		(60,472,000)
Net cost		40,724,000		163,943,000
Net proceeds		(12,012,000)		(56,200,000)
Eurodollar Future [Member]
Investment Holdings, Other than Securities [Line Items]
Future contract notional		$ 1,000,000		$ 1,000,000
Future contract | contracts		1		1
Options on U.S. Treasury Futures [Member] | Put Option [Member]
Investment Holdings, Other than Securities [Line Items]
Number of contracts | contracts				39
Options on U.S. Treasury Futures [Member] | Call Option [Member]
Investment Holdings, Other than Securities [Line Items]
Number of contracts | contracts				39
Mortgage Loan Purchase Commitments [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[2],[3]	$ 20,601,000
Long [Member] | US Treasury Note Futures [Member]
Investment Holdings, Other than Securities [Line Items]
Number of contracts | contracts				343
Short [Member] | US Treasury Note Futures [Member]
Investment Holdings, Other than Securities [Line Items]
Number of contracts | contracts		70
Financial Derivatives - Assets [Member]
Investment Holdings, Other than Securities [Line Items]
Financial derivatives–assets, at fair value-		$ 35,595,000	[3]	$ 162,905,000	[4]
Financial Derivative Assets, Percent of Net Assets		5.52%	[3],[5]	22.05%	[4],[6]
Net cost		$ 40,724,000	[3]	$ 163,934,000	[4]
Financial Derivatives - Assets [Member] | Affiliates of Bank of America [Member]
Investment Holdings, Other than Securities [Line Items]
Financial Derivative Assets, Percent of Net Assets				6.01%
Financial Derivatives - Assets [Member] | Swap [Member]
Investment Holdings, Other than Securities [Line Items]
Financial derivatives–assets, at fair value-		$ 35,400,000	[3]	$ 159,423,000	[4],[7]
Financial Derivative Assets, Percent of Net Assets		5.49%	[3],[5]	21.58%	[4],[6],[7]
Net cost		$ 40,491,000	[3]	$ 161,193,000	[4],[7]
Financial Derivatives - Assets [Member] | Futures [Member]
Investment Holdings, Other than Securities [Line Items]
Financial derivatives–assets, at fair value-		$ 29,000	[3]	$ 32,000	[4]
Financial Derivative Assets, Percent of Net Assets		0.00%	[3],[5]	0.01%	[4],[6]
Financial Derivatives - Assets [Member] | Options [Member]
Investment Holdings, Other than Securities [Line Items]
Financial derivatives–assets, at fair value-		$ 44,000	[3]	$ 2,162,000	[4]
Financial Derivative Assets, Percent of Net Assets		0.01%	[3],[5]	0.29%	[4],[6]
Net cost		$ 133,000	[3]	$ 2,600,000	[4]
Financial Derivatives - Assets [Member] | Warrant [Member]
Investment Holdings, Other than Securities [Line Items]
Financial derivatives–assets, at fair value-		$ 106,000	[3]	$ 150,000	[4]
Financial Derivative Assets, Percent of Net Assets		0.02%	[3],[5]	0.02%	[4],[6]
Net cost		$ 100,000	[3]	$ 150,000	[4]
Financial Derivatives - Assets [Member] | Forwards [Member]
Investment Holdings, Other than Securities [Line Items]
Financial derivatives–assets, at fair value-		$ 16,000	[3]	$ 1,138,000	[4]
Financial Derivative Assets, Percent of Net Assets		0.00%	[3],[5]	0.15%	[4],[6]
Financial Derivatives - Assets [Member] | North America [Member] | Warrant [Member] | Mortgage-related Residential [Member] | Equity Market Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ 1,639,000	[3],[8]	$ 1,555,000	[4],[9]
Financial derivatives–assets, at fair value-		106,000	[3],[8]	150,000	[4],[9]
Financial Derivatives - Assets [Member] | Long [Member] | Credit Default Swaps On Asset Backed Indices [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		1,202,000	[3],[10]	1,468,000	[4],[7],[11]
Financial derivatives–assets, at fair value-		$ 12,000	[3],[10]	$ 56,000	[4],[7],[11]
Investment Maturity Date		2037-12	[3],[10]	2037-12	[4],[7],[11]
Financial Derivatives - Assets [Member] | Long [Member] | Credit Default Swaps On Corporate Bond Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Financial derivatives–assets, at fair value-	[4],[7],[11]			$ 135,752,000
Financial Derivatives - Assets [Member] | Long [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[10]	$ 40,611,000
Financial derivatives–assets, at fair value-	[3],[10]	$ 2,744,000
Financial Derivatives - Assets [Member] | Long [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Credit Risk [Member] | CDX.NA.HY 25 35-100 [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[11]			442,140,000
Financial derivatives–assets, at fair value-	[4],[7],[11]			$ 81,758,000
Investment Maturity Date	[4],[7],[11]			2020-12
Financial Derivatives - Assets [Member] | Long [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Credit Risk [Member] | ITRX EUR XOVER 24 5Y 35-100 [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[11]			$ 229,954,000
Financial derivatives–assets, at fair value-	[4],[7],[11]			$ 46,716,000
Investment Maturity Date	[4],[7],[11]			2020-12
Financial Derivatives - Assets [Member] | Long [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Credit Risk [Member] | Other Credit Default Swaps on Corporate Bond Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[11]			$ 121,730,000
Financial derivatives–assets, at fair value-	[4],[7],[11]			$ 7,278,000
Financial Derivatives - Assets [Member] | Long [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2018-12
Financial Derivatives - Assets [Member] | Long [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Minimum [Member] | Credit Risk [Member] | Other Credit Default Swaps on Corporate Bond Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[11]			2018-06
Financial Derivatives - Assets [Member] | Long [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2021-12
Financial Derivatives - Assets [Member] | Long [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Maximum [Member] | Credit Risk [Member] | Other Credit Default Swaps on Corporate Bond Indices [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[11]			2020-06
Financial Derivatives - Assets [Member] | Long [Member] | Options on Credit Default Swaps on Corporate Bond Indices [Member] | Credit Risk [Member] | Put Option [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ 10,000,000	[3],[12]	$ 138,000,000	[4],[13]
Financial derivatives–assets, at fair value-		$ 0	[3],[12]	$ 2,050,000	[4],[13]
Investment Maturity Date		2017-01	[3],[12]	2016-03	[4],[13]
Financial Derivatives - Assets [Member] | Long [Member] | Interest Rate Swaps [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ 215,826,000	[3],[14]	$ 545,232,000	[4],[7],[15]
Financial derivatives–assets, at fair value-		$ 2,274,000	[3],[14]	$ 7,254,000	[4],[7],[15]
Financial Derivatives - Assets [Member] | Long [Member] | Interest Rate Swaps [Member] | Minimum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2017-12	[3],[14]	2016-12	[4],[7],[15]
Financial Derivatives - Assets [Member] | Long [Member] | Interest Rate Swaps [Member] | Maximum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2045-01	[3],[14]	2045-12	[4],[7],[15]
Financial Derivatives - Assets [Member] | Long [Member] | Eurodollar Future [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[16]			$ 23,000,000
Financial derivatives–assets, at fair value-	[4],[16]			$ 17,000
Investment Maturity Date	[4],[16]			2017-06
Financial Derivatives - Assets [Member] | Long [Member] | US Treasury Note Futures [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[17]			$ 6,300,000
Financial derivatives–assets, at fair value-	[4],[17]			$ 2,000
Investment Maturity Date	[4],[17]			2016-03
Financial Derivatives - Assets [Member] | Long [Member] | Interest Rate Cap [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[18]	$ 61,908,000
Financial derivatives–assets, at fair value-	[3],[18]	$ 2,000
Financial Derivatives - Assets [Member] | Long [Member] | Interest Rate Cap [Member] | Minimum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[18]	2018-03
Financial Derivatives - Assets [Member] | Long [Member] | Interest Rate Cap [Member] | Maximum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[18]	2018-10
Financial Derivatives - Assets [Member] | Long [Member] | Equity Option [Member] | Equity Market Risk [Member] | Call Option [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[19]	$ 16,000
Financial derivatives–assets, at fair value-	[3],[19]	$ 42,000
Investment Maturity Date	[3],[19]	2017-04
Financial Derivatives - Assets [Member] | Long [Member] | Options on U.S. Treasury Futures [Member] | Interest Rate Risk [Member] | Put Option [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[20]			$ 3,900,000
Financial derivatives–assets, at fair value-	[4],[20]			$ 61,000
Investment Maturity Date	[4],[20]			2016-02
Financial Derivatives - Assets [Member] | Long [Member] | Options on U.S. Treasury Futures [Member] | Interest Rate Risk [Member] | Call Option [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[20]			$ 3,900,000
Financial derivatives–assets, at fair value-	[4],[20]			$ 51,000
Investment Maturity Date	[4],[20]			2016-02
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member]
Investment Holdings, Other than Securities [Line Items]
Financial derivatives–assets, at fair value-	[3],[10]	$ 1,361,000
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Basic Materials [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[10]	760,000
Financial derivatives–assets, at fair value-	[3],[10]	$ 90,000
Investment Maturity Date	[3],[10]	2021-03
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Consumer [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[10]	$ 8,043,000
Financial derivatives–assets, at fair value-	[3],[10]	$ 973,000
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Consumer [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2019-03
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Consumer [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2021-12
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[10]	$ 4,120,000
Financial derivatives–assets, at fair value-	[3],[10]	$ 7,000
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2019-03
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2021-12
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Financial [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[10]	$ 1,120,000
Financial derivatives–assets, at fair value-	[3],[10]	$ 140,000
Investment Maturity Date	[3],[10]	2021-12
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Utilities [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[10]	$ 2,060,000
Financial derivatives–assets, at fair value-	[3],[10]	$ 151,000
Investment Maturity Date	[3],[10]	2021-06
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member]
Investment Holdings, Other than Securities [Line Items]
Financial derivatives–assets, at fair value-		$ 155,000	[3],[21]	$ 85,000	[4],[7]
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Communications [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[22]			3,836,000
Financial derivatives–assets, at fair value-	[4],[7],[22]			$ 49,000
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Communications [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[22]			2016-03
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Communications [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[22]			2016-12
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Consumer [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		3,130,000	[3],[21]	$ 4,880,000	[4],[7],[22]
Financial derivatives–assets, at fair value-		$ 87,000	[3],[21]	$ 31,000	[4],[7],[22]
Investment Maturity Date	[3],[21]	2019-07
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Consumer [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[22]			2016-03
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Consumer [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[22]			2017-01
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Energy [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[22]			$ 729,000
Financial derivatives–assets, at fair value-	[4],[7],[22]			$ 5,000
Investment Maturity Date	[4],[7],[22]			2016-10
Financial Derivatives - Assets [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Utilities [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[21]	$ 685,000
Financial derivatives–assets, at fair value-	[3],[21]	$ 68,000
Investment Maturity Date	[3],[21]	2020-02
Financial Derivatives - Assets [Member] | Short [Member] | Credit Default Swaps On Asset Backed Indices [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (112,999,000)	[3],[23]	$ (95,589,000)	[4],[7],[24]
Financial derivatives–assets, at fair value-		$ 16,701,000	[3],[23]	$ 5,354,000	[4],[7],[24]
Financial Derivatives - Assets [Member] | Short [Member] | Credit Default Swaps On Asset Backed Indices [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2046-05	[3],[23]	2046-05	[4],[7],[24]
Financial Derivatives - Assets [Member] | Short [Member] | Credit Default Swaps On Asset Backed Indices [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2058-09	[3],[23]	2063-05	[4],[7],[24]
Financial Derivatives - Assets [Member] | Short [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[24]			$ (15,208,000)
Financial derivatives–assets, at fair value-	[4],[7],[24]			$ 1,891,000
Financial Derivatives - Assets [Member] | Short [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[24]			2017-12
Financial Derivatives - Assets [Member] | Short [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[24]			2019-12
Financial Derivatives - Assets [Member] | Short [Member] | Interest Rate Swaps [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (607,499,000)	[3],[25]	$ (608,365,000)	[4],[7],[26]
Financial derivatives–assets, at fair value-		$ 5,828,000	[3],[25]	$ 2,689,000	[4],[7],[26]
Financial Derivatives - Assets [Member] | Short [Member] | Interest Rate Swaps [Member] | Minimum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2017-04	[3],[25]	2016-12	[4],[7],[26]
Financial Derivatives - Assets [Member] | Short [Member] | Interest Rate Swaps [Member] | Maximum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2045-12	[3],[25]	2045-12	[4],[7],[26]
Financial Derivatives - Assets [Member] | Short [Member] | Eurodollar Future [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (13,000,000)	[3],[27]	$ (90,000,000)	[4],[16]
Financial derivatives–assets, at fair value-		$ 10,000	[3],[27]	$ 13,000	[4],[16]
Investment Maturity Date		2017-09	[3],[27]	2016-12	[4],[16]
Financial Derivatives - Assets [Member] | Short [Member] | US Treasury Note Futures [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[28]	$ (7,000,000)
Financial derivatives–assets, at fair value-	[3],[28]	$ 19,000
Investment Maturity Date	[3],[28]	2017-03
Financial Derivatives - Assets [Member] | Short [Member] | Forwards [Member] | Currency risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (6,529,000)	[3],[29]	$ (95,326,000)	[4],[30]
Financial derivatives–assets, at fair value-		$ 16,000	[3],[29]	$ 1,138,000	[4],[30]
Investment Maturity Date		2017-03	[3],[29]	2016-03	[4],[30]
Financial Derivatives - Assets [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member]
Investment Holdings, Other than Securities [Line Items]
Financial derivatives–assets, at fair value-	[3],[23]	$ 999,000
Financial Derivatives - Assets [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Communications [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[23]	(1,930,000)
Financial derivatives–assets, at fair value-	[3],[23]	$ 30,000
Investment Maturity Date	[3],[23]	2021-06
Financial Derivatives - Assets [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Consumer [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (2,880,000)	[3],[23]	$ (590,000)	[4],[7],[24]
Financial derivatives–assets, at fair value-		$ 102,000	[3],[23]	$ 10,000	[4],[7],[24]
Investment Maturity Date		2021-12	[3],[23]	2019-12	[4],[7],[24]
Financial Derivatives - Assets [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[23]	$ (20,507,000)
Financial derivatives–assets, at fair value-	[3],[23]	$ 867,000
Financial Derivatives - Assets [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[23]	2017-06
Financial Derivatives - Assets [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[23]	2021-06
Financial Derivatives - Assets [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Asset Backed Securities [Member] | Mortgage-related Residential [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (7,077,000)	[3],[23]	$ (8,967,000)	[4],[7],[24]
Financial derivatives–assets, at fair value-		$ 5,326,000	[3],[23]	$ 6,332,000	[4],[7],[24]
Financial Derivatives - Assets [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Asset Backed Securities [Member] | Mortgage-related Residential [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2035-05	[3],[23]	2034-09	[4],[7],[24]
Financial Derivatives - Assets [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Asset Backed Securities [Member] | Mortgage-related Residential [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2035-12	[3],[23]	2035-12	[4],[7],[24]
Financial Derivatives - Liabilities [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities		$ (18,687,000)	[3]	$ (60,472,000)	[4]
Financial Derivative Liabilities, Percent of Net Assets		(2.90%)	[3],[5]	(8.18%)	[4],[6]
Net proceeds		$ (12,012,000)	[3]	$ (56,200,000)	[4]
Financial Derivatives - Liabilities [Member] | Affiliates of JP Morgan [Member]
Investment Holdings, Other than Securities [Line Items]
Financial Derivative Liabilities, Percent of Net Assets				(6.32%)
Financial Derivatives - Liabilities [Member] | Swap [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities		$ (18,115,000)	[3]	$ (58,163,000)	[4],[7]
Financial Derivative Liabilities, Percent of Net Assets		(2.81%)	[3],[5]	(7.87%)	[4],[6],[7]
Net proceeds		$ (12,012,000)	[3]	$ (53,679,000)	[4],[7]
Financial Derivatives - Liabilities [Member] | Futures [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities		$ (69,000)	[3]	$ (528,000)	[4]
Financial Derivative Liabilities, Percent of Net Assets		(0.01%)	[3],[5]	(0.07%)	[4],[6]
Financial Derivatives - Liabilities [Member] | Options [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities	[4]			$ (1,760,000)
Financial Derivative Liabilities, Percent of Net Assets	[4],[6]			(0.24%)
Net proceeds	[4]			$ (2,521,000)
Financial Derivatives - Liabilities [Member] | Forwards [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities		$ (472,000)	[3]	$ (13,000)	[4]
Financial Derivative Liabilities, Percent of Net Assets		(0.07%)	[3],[5]	0.00%	[4],[6]
Financial Derivatives - Liabilities [Member] | Mortgage Loan Purchase Commitments [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities	[4]	$ (31,000)		$ (8,000)
Financial Derivative Liabilities, Percent of Net Assets		(0.01%)	[3],[5]	0.00%	[4],[6]
Financial Derivatives - Liabilities [Member] | Mortgage Loan Purchase Commitments [Member] | Mortgage-related Residential [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ 20,601,000	[2],[3]	$ 7,713,000	[4],[31]
Derivative Liabilities		$ (31,000)	[2],[3]	$ (8,000)	[4],[31]
Investment Maturity Date	[2],[3]	2017-02
Financial Derivatives - Liabilities [Member] | Mortgage Loan Purchase Commitments [Member] | Mortgage-related Residential [Member] | Minimum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[31]			2016-01
Financial Derivatives - Liabilities [Member] | Mortgage Loan Purchase Commitments [Member] | Mortgage-related Residential [Member] | Maximum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[31]			2016-02
Financial Derivatives - Liabilities [Member] | Long [Member] | Credit Default Swaps On Asset Backed Indices [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ 16,026,000	[3],[10]	$ 4,458,000	[4],[7],[11]
Derivative Liabilities		$ (2,899,000)	[3],[10]	$ (365,000)	[4],[7],[11]
Financial Derivatives - Liabilities [Member] | Long [Member] | Credit Default Swaps On Asset Backed Indices [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2047-01	[3],[10]	2052-10	[4],[7],[11]
Financial Derivatives - Liabilities [Member] | Long [Member] | Credit Default Swaps On Asset Backed Indices [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2063-05	[3],[10]	2063-05	[4],[7],[11]
Financial Derivatives - Liabilities [Member] | Long [Member] | Interest Rate Swaps [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ 160,248,000	[3],[14]	$ 129,975,000	[4],[7],[15]
Derivative Liabilities		$ (4,396,000)	[3],[14]	$ (278,000)	[4],[7],[15]
Financial Derivatives - Liabilities [Member] | Long [Member] | Interest Rate Swaps [Member] | Minimum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2019-02	[3],[14]	2016-10	[4],[7],[15]
Financial Derivatives - Liabilities [Member] | Long [Member] | Interest Rate Swaps [Member] | Maximum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2045-01	[3],[14]	2045-12	[4],[7],[15]
Financial Derivatives - Liabilities [Member] | Long [Member] | Eurodollar Future [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[27]	$ 11,000,000
Derivative Liabilities	[3],[27]	$ (8,000)
Investment Maturity Date	[3],[27]	2017-06
Financial Derivatives - Liabilities [Member] | Long [Member] | US Treasury Note Futures [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[17]			$ 37,700,000
Derivative Liabilities	[4],[17]			$ (235,000)
Investment Maturity Date	[4],[17]			2016-03
Financial Derivatives - Liabilities [Member] | Long [Member] | Straddle Swaption [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[32]			$ 8,400,000
Derivative Liabilities	[4],[32]			$ (31,000)
Investment Maturity Date	[4],[32]			2018-11
Financial Derivatives - Liabilities [Member] | Long [Member] | Forwards [Member] | Currency risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[33]			$ 2,734,000
Derivative Liabilities	[4],[33]			$ (13,000)
Investment Maturity Date	[4],[33]			2016-03
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities	[3],[10]	$ (2,763,000)
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Basic Materials [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[10]	9,480,000
Derivative Liabilities	[3],[10]	$ (1,107,000)
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Basic Materials [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2021-06
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Basic Materials [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2021-12
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Communications [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[10]	$ 9,990,000
Derivative Liabilities	[3],[10]	$ (430,000)
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Communications [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2021-06
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Communications [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2021-12
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Consumer [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[10]	$ 9,736,000
Derivative Liabilities	[3],[10]	$ (298,000)
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Consumer [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2021-06
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Consumer [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2021-12
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[10]	$ 14,317,000
Derivative Liabilities	[3],[10]	$ (928,000)
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2018-03
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[10]	2021-12
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities		$ (249,000)	[3],[21]	$ (4,662,000)	[4],[7]
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Basic Materials [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[22]			6,477,000
Derivative Liabilities	[4],[7],[22]			$ (822,000)
Investment Maturity Date	[4],[7],[22]			2016-03
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Communications [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		1,623,000	[3],[21]	$ 11,009,000	[4],[7],[22]
Derivative Liabilities		$ (249,000)	[3],[21]	$ (2,581,000)	[4],[7],[22]
Investment Maturity Date	[3],[21]	2019-07
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Communications [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[22]			2016-03
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Communications [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[22]			2016-08
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Consumer [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[22]			$ 4,983,000
Derivative Liabilities	[4],[7],[22]			$ (143,000)
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Consumer [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[22]			2016-06
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Consumer [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[22]			2016-08
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Industrial [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[22]			$ 1,000,000
Derivative Liabilities	[4],[7],[22]			$ (39,000)
Investment Maturity Date	[4],[7],[22]			2016-03
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Diversified [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[22]			$ 2,765,000
Derivative Liabilities	[4],[7],[22]			$ (171,000)
Investment Maturity Date	[4],[7],[22]			2016-03
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Energy [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[22]			$ 4,076,000
Derivative Liabilities	[4],[7],[22]			(812,000)
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Energy [Member] | Equity Market Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[34]			35,000
Derivative Liabilities	[4],[7],[34]			$ 0
Investment Maturity Date	[4],[7],[34]			2017-07
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Energy [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[22]			2016-04
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Energy [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[7],[22]			2016-08
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Financial [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[22]			$ 2,646,000
Derivative Liabilities	[4],[7],[22]			$ (10,000)
Investment Maturity Date	[4],[7],[22]			2016-09
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Financial [Member] | Equity Market Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[34]			$ 21,635,000
Derivative Liabilities	[4],[7],[34]			$ 0
Investment Maturity Date	[4],[7],[34]			2016-11
Financial Derivatives - Liabilities [Member] | Long [Member] | North America [Member] | Total Return Swaps [Member] | Technology [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[22]			$ 2,650,000
Derivative Liabilities	[4],[7],[22]			$ (84,000)
Investment Maturity Date	[4],[7],[22]			2017-01
Financial Derivatives - Liabilities [Member] | Long [Member] | Europe [Member] | Credit Default Swaps On Corporate Bonds [Member] | Basic Materials [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[10]	$ 11,000
Derivative Liabilities	[3],[10]	$ (6,000)
Investment Maturity Date	[3],[10]	2019-12
Financial Derivatives - Liabilities [Member] | Short [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (49,306,000)	[3],[23]	$ (1,001,913,000)	[4],[7],[24]
Derivative Liabilities		$ (2,840,000)	[3],[23]	$ (47,298,000)	[4],[7],[24]
Financial Derivatives - Liabilities [Member] | Short [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2018-12	[3],[23]	2016-12	[4],[7],[24]
Financial Derivatives - Liabilities [Member] | Short [Member] | Credit Default Swaps On Corporate Bond Indices [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2021-12	[3],[23]	2020-12	[4],[7],[24]
Financial Derivatives - Liabilities [Member] | Short [Member] | Options on Credit Default Swaps on Corporate Bond Indices [Member] | Credit Risk [Member] | Put Option [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[35]			$ (171,750,000)
Derivative Liabilities	[4],[35]			(720,000)
Financial Derivatives - Liabilities [Member] | Short [Member] | Options on Credit Default Swaps on Corporate Bond Indices [Member] | Credit Risk [Member] | Call Option [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[36]			(273,100,000)
Derivative Liabilities	[4],[36]			$ (884,000)
Financial Derivatives - Liabilities [Member] | Short [Member] | Options on Credit Default Swaps on Corporate Bond Indices [Member] | Minimum [Member] | Credit Risk [Member] | Put Option [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[35]			2016-02
Financial Derivatives - Liabilities [Member] | Short [Member] | Options on Credit Default Swaps on Corporate Bond Indices [Member] | Minimum [Member] | Credit Risk [Member] | Call Option [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[36]			2016-01
Financial Derivatives - Liabilities [Member] | Short [Member] | Options on Credit Default Swaps on Corporate Bond Indices [Member] | Maximum [Member] | Credit Risk [Member] | Put Option [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[35]			2016-03
Financial Derivatives - Liabilities [Member] | Short [Member] | Options on Credit Default Swaps on Corporate Bond Indices [Member] | Maximum [Member] | Credit Risk [Member] | Call Option [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4],[36]			2016-02
Financial Derivatives - Liabilities [Member] | Short [Member] | Interest Rate Swaps [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (154,836,000)	[3],[25]	$ (518,235,000)	[4],[7],[26]
Derivative Liabilities		$ (742,000)	[3],[25]	$ (4,656,000)	[4],[7],[26]
Financial Derivatives - Liabilities [Member] | Short [Member] | Interest Rate Swaps [Member] | Minimum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2017-08	[3],[25]	2016-01	[4],[7],[26]
Financial Derivatives - Liabilities [Member] | Short [Member] | Interest Rate Swaps [Member] | Maximum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2045-11	[3],[25]	2046-01	[4],[7],[26]
Financial Derivatives - Liabilities [Member] | Short [Member] | Interest Rate Swaps Variable rates only [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[37]	$ (100,200,000)
Derivative Liabilities	[3],[37]	$ (24,000)
Financial Derivatives - Liabilities [Member] | Short [Member] | Interest Rate Swaps Variable rates only [Member] | Minimum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[37]	2017-06
Financial Derivatives - Liabilities [Member] | Short [Member] | Interest Rate Swaps Variable rates only [Member] | Maximum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[37]	2019-06
Financial Derivatives - Liabilities [Member] | Short [Member] | Eurodollar Future [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (49,000,000)	[3],[27]	$ (306,000,000)	[4],[16]
Derivative Liabilities		$ (61,000)	[3],[27]	$ (293,000)	[4],[16]
Financial Derivatives - Liabilities [Member] | Short [Member] | Eurodollar Future [Member] | Minimum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2017-03	[3],[27]	2016-03	[4],[16]
Financial Derivatives - Liabilities [Member] | Short [Member] | Eurodollar Future [Member] | Maximum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2017-09	[3],[27]	2017-09	[4],[16]
Financial Derivatives - Liabilities [Member] | Short [Member] | Straddle Swaption [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[32]			$ (13,100,000)
Derivative Liabilities	[4],[32]			$ (125,000)
Financial Derivatives - Liabilities [Member] | Short [Member] | Straddle Swaption [Member] | Minimum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4]			2016-01
Financial Derivatives - Liabilities [Member] | Short [Member] | Straddle Swaption [Member] | Maximum [Member] | Interest Rate Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[4]			2016-06
Financial Derivatives - Liabilities [Member] | Short [Member] | Forwards [Member] | Currency risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[29]	$ (48,258,000)
Derivative Liabilities	[3],[29]	$ (472,000)
Investment Maturity Date	[3],[29]	2017-03
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities		$ (3,885,000)	[3],[23]	$ (683,000)	[4],[7],[24]
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Basic Materials [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[23]	(2,260,000)
Derivative Liabilities	[3],[23]	$ (93,000)
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Basic Materials [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[23]	2017-06
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Basic Materials [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[23]	2021-03
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Communications [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[23]	$ (3,140,000)
Derivative Liabilities	[3],[23]	$ (44,000)
Investment Maturity Date	[3],[23]	2020-06
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Consumer [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (30,901,000)	[3],[23]	(8,780,000)	[4],[7],[24]
Derivative Liabilities		$ (3,097,000)	[3],[23]	$ (584,000)	[4],[7],[24]
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Consumer [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2019-03	[3],[23]	2019-09	[4],[7],[24]
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Consumer [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2021-12	[3],[23]	2020-12	[4],[7],[24]
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Industrial [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[23]	$ (12,460,000)
Derivative Liabilities	[3],[23]	$ (119,000)
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Industrial [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[23]	2020-03
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Industrial [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[23]	2021-12
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[23]	$ (5,150,000)
Derivative Liabilities	[3],[23]	$ (80,000)
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[23]	2017-12
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Energy [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[23]	2021-12
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Financial [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[24]			$ (4,000,000)
Derivative Liabilities	[4],[7],[24]			$ (99,000)
Investment Maturity Date	[4],[7],[24]			2020-03
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Technology [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[23]	$ (3,020,000)
Derivative Liabilities	[3],[23]	$ (345,000)
Investment Maturity Date	[3],[23]	2020-03
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Corporate Bonds [Member] | Utilities [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[3],[23]	$ (860,000)
Derivative Liabilities	[3],[23]	$ (107,000)
Investment Maturity Date	[3],[23]	2021-06
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Asset Backed Securities [Member] | Mortgage-related Residential [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (3,057,000)	[3],[23]	$ (3,209,000)	[4],[7],[24]
Derivative Liabilities		$ (256,000)	[3],[23]	$ (221,000)	[4],[7],[24]
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Asset Backed Securities [Member] | Mortgage-related Residential [Member] | Minimum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2034-10	[3],[23]	2034-10	[4],[7],[24]
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Credit Default Swaps On Asset Backed Securities [Member] | Mortgage-related Residential [Member] | Maximum [Member] | Credit Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date		2035-03	[3],[23]	2035-03	[4],[7],[24]
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Total Return Swaps [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative Liabilities	[4],[7]			$ 0
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Total Return Swaps [Member] | Energy [Member] | Equity Market Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional	[4],[7],[34]			(58,000)
Derivative Liabilities	[4],[7],[34]			$ 0
Investment Maturity Date	[4],[7],[34]			2017-07
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Total Return Swaps [Member] | Financial [Member] | Equity Market Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Derivative notional		$ (42,093,000)	[3],[38]	$ (4,048,000)	[4],[7],[34]
Derivative Liabilities		$ (55,000)	[3],[38]	$ 0	[4],[7],[34]
Investment Maturity Date	[4],[7],[34]			2017-03
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Total Return Swaps [Member] | Financial [Member] | Minimum [Member] | Equity Market Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[38]	2017-05
Financial Derivatives - Liabilities [Member] | Short [Member] | North America [Member] | Total Return Swaps [Member] | Financial [Member] | Maximum [Member] | Equity Market Risk [Member]
Investment Holdings, Other than Securities [Line Items]
Investment Maturity Date	[3],[38]	2017-08

[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] Notional value represents principal balance of mortgage loan purchase commitments. Actual loan purchases are contingent upon successful loan closings in accordance with agreed-upon parameters.

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

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

[5] Classification percentages are based on Total Equity.

[6] Classification percentages are based on Total Equity.

[7] The following table shows the Company's swap assets and liabilities by dealer as a percentage of Total Equity:Dealer/Parent Company Asset/Liability Percent of EquityAffiliates of Bank of America Financial derivatives—asset 6.01 %Affiliates of JP Morgan Financial derivatives—liability (6.32)%

[8] Notional value represents number of shares that warrants are convertible into.

[9] Notional value represents number of shares that warrants are convertible into.

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

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

[12] 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.

[13] 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.

[14] For long interest rate swap contracts, the Company pays a floating rate and receives a fixed rate.

[15] For long interest rate swap contracts, the Company pays a floating rate and receives a fixed rate.

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

[17] Notional value represents the total face amount of U.S. Treasury Notes underlying all contracts held; as of December 31, 2015, 343 long futures contracts were held.

[18] Notional value represents the amount on which interest payments are calculated to the extent the market interest rate exceeds the rate cap on the contract.

[19] Notional value represents the number of common shares we have the option to purchase multiplied by the strike price.

[20] Represents the option on the part of the Company to enter into a futures contract with a counterparty; as of December 31, 2015, 39 put options and 39 call options contracts were held.

[21] Notional value represents outstanding principal balance on underlying corporate debt.

[22] Notional value represents outstanding principal balance on underlying corporate debt.

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

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

[25] For short interest rate swap contracts, the Company pays a fixed rate and receives a floating rate.

[26] For short interest rate swap contracts, the Company pays a fixed rate and receives a floating rate.

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

[28] Notional value represents the total face amount of U.S. Treasury securities underlying all contracts held. As of December 31, 2016, a total of 70 contracts were held.

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

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

[31] Notional value represents principal balance of mortgage loan purchase commitments. Actual loan purchases are contingent upon successful loan closings in accordance with agreed-upon parameters.

[32] Represents the combination of a written payer swaption and a written receiver swaption on the same underlying swap.

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

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

[35] 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.

[36] 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 pay a fixed rate and receive credit protection payments.

[37] The Company pays a floating rate and receives a floating rate.

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