Consolidated Condensed Schedule Of Investments (Long Investments) - Major Types of Debt and Equity Securities [Domain] - Fair Value by Asset Class [Domain] - USD ($) shares in Thousands		6 Months Ended		12 Months Ended
		Jun. 30, 2015		Dec. 31, 2014
Schedule of Investments [Line Items]
Fair Value		$ 1,870,251,000		$ 2,172,082,000
Investment Owned, at Cost		$ 1,844,920,000		$ 2,122,326,000
Percentage collaterallized by GNRCMO certificates		100.00%		100.00%
Fair value of loans held in related party trust		$ 2,300,000
Non-performing loans, maturity date not applicable		$ 11,400,000		$ 11,300,000
Unrated But Agency-Guaranteed [Member]
Schedule of Investments [Line Items]
Long investment holdings as a percentage of stockholders' equity		147.91%		163.60%
Long Investment A Rating [Member]
Schedule of Investments [Line Items]
Long investment holdings as a percentage of stockholders' equity		0.35%		0.98%
Long Investment BBB Rating [Member]
Schedule of Investments [Line Items]
Long investment holdings as a percentage of stockholders' equity		2.23%		5.62%
Long Investment BB Rating [Member]
Schedule of Investments [Line Items]
Long investment holdings as a percentage of stockholders' equity		53.46%		80.65%
Long Investment Unrated Rating [Member]
Schedule of Investments [Line Items]
Long investment holdings as a percentage of stockholders' equity		36.72%		24.61%
Principal And Interest - Fixed Rate Agency Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		138.00%	[1],[2],[3],[4]	147.82%	[5],[6],[7],[8],[9]
Fair Value		$ 1,072,400,000	[1],[3],[4]	$ 1,165,642,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 4.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 192,676,000	[1],[3],[4]	$ 191,734,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (30 Year)	[1],[3],[4]	Federal National Mortgage Association Pools (30 Year)	[5],[7],[8],[9]
Rate		4.00%	[1],[3],[4]	4.00%	[5],[7],[8],[9]
Fair Value		$ 205,465,000	[1],[3],[4]	$ 206,080,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 4.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2042-08	[1],[3],[4]	2042-04	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 4.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2045-07	[1],[3],[4]	2045-01	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 4.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 168,762,000	[1],[3],[4]	$ 176,029,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (30 Year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (30 Year)	[5],[7],[8],[9]
Rate		4.00%	[1],[3],[4]	4.00%	[5],[7],[8],[9]
Fair Value		$ 179,647,000	[1],[3],[4]	$ 188,912,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 4.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2042-09	[1],[3],[4]	2042-09	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 4.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2045-05	[1],[3],[4]	2045-01	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 4.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 143,326,000	[1],[3],[4]	$ 171,291,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (30 Year)	[1],[3],[4]	Federal National Mortgage Association Pools (30 Year)	[5],[7],[8],[9]
Rate		4.50%	[1],[3],[4]	4.50%	[5],[7],[8],[9]
Fair Value		$ 156,617,000	[1],[3],[4]	$ 187,748,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 4.50% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2041-10	[1],[3],[4]	2041-10	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 4.50% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2045-04	[1],[3],[4]	2045-01	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 3.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 95,861,000	[1],[3],[4]	$ 63,040,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (30 Year)	[1],[3],[4]	Federal National Mortgage Association Pools (30 Year)	[5],[7],[8],[9]
Rate		3.50%	[1],[3],[4]	3.50%	[5],[7],[8],[9]
Fair Value		$ 99,100,000	[1],[3],[4]	$ 65,989,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 3.50% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2042-10	[1],[3],[4]	2042-10	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 3.50% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2045-06	[1],[3],[4]	2044-11	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 4.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 69,642,000	[1],[3],[4]	$ 71,332,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (30 Year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (30 Year)	[5],[7],[8],[9]
Rate		4.50%	[1],[3],[4]	4.50%	[5],[7],[8],[9]
Fair Value		$ 76,219,000	[1],[3],[4]	$ 78,285,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 4.50% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2043-09	[1],[3],[4]	2043-09	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 4.50% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2045-06	[1],[3],[4]	2044-12	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 5.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 62,254,000	[1],[3],[4]	$ 93,720,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (30 Year)	[1],[3],[4]	Federal National Mortgage Association Pools (30 Year)	[5],[7],[8],[9]
Rate		5.00%	[1],[3],[4]	5.00%	[5],[7],[8],[9]
Fair Value		$ 69,261,000	[1],[3],[4]	$ 104,347,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 5.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2035-10	[1],[3],[4]	2035-10	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 5.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2044-12	[1],[3],[4]	2044-12	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 3.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 53,392,000	[1],[3],[4]	$ 53,456,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (30 Year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (30 Year)	[5],[7],[8],[9]
Rate		3.50%	[1],[3],[4]	3.50%	[5],[7],[8],[9]
Fair Value		$ 55,143,000	[1],[3],[4]	$ 55,840,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 3.50% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2042-01	[1],[3],[4]	2042-01	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 3.50% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2045-06	[1],[3],[4]	2045-01	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (15 Year) 3.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 41,201,000	[1],[3],[4]	$ 84,478,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (15 Year)	[1],[3],[4]	Federal National Mortgage Association Pools (15 Year)	[5],[7],[8],[9]
Rate		3.50%	[1],[3],[4]	3.50%	[5],[7],[8],[9]
Fair Value		$ 43,742,000	[1],[3],[4]	$ 89,707,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (15 Year) 3.50% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2028-03	[1],[3],[4]	2028-03	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (15 Year) 3.50% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2030-06	[1],[3],[4]	2029-12	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (15 Year) 3.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 19,974,000	[1],[3],[4]	$ 21,139,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (15 Year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (15 Year)	[5],[7],[8],[9]
Rate		3.50%	[1],[3],[4]	3.50%	[5],[7],[8],[9]
Fair Value		$ 21,221,000	[1],[3],[4]	$ 22,410,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (15 Year) 3.50% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2028-09	[1],[3],[4]	2028-09	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (15 Year) 3.50% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2029-09	[1],[3],[4]	2029-09	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (15 Year) 4.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 12,689,000	[1],[3],[4]	$ 14,283,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (15 Year)	[1],[3],[4]	Federal National Mortgage Association Pools (15 Year)	[5],[7],[8],[9]
Rate		4.00%	[1],[3],[4]	4.00%	[5],[7],[8],[9]
Fair Value		$ 13,416,000	[1],[3],[4]	$ 15,211,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (15 Year) 4.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2026-06	[1],[3],[4]	2026-06	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (15 Year) 4.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2029-12	[1],[3],[4]	2029-12	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (15 Year) 3.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[1],[3],[4]	$ 9,397,000
Investment Owned Description	[1],[3],[4]	Federal National Mortgage Association Pools (15 Year)
Rate	[1],[3],[4]	3.00%
Fair Value	[1],[3],[4]	$ 9,782,000
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (15 Year) 3.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity	[1],[3],[4]	2030-04
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (15 Year) 3.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity	[1],[3],[4]	2030-06
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 3.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 9,421,000	[1],[3],[4]	$ 10,130,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (30 Year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (30 Year)	[5],[7],[8],[9]
Rate		3.00%	[1],[3],[4]	3.00%	[5],[7],[8],[9]
Fair Value		$ 9,410,000	[1],[3],[4]	$ 10,271,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 3.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2043-01	[1],[3],[4]	2043-01	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 3.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2043-04	[1],[3],[4]	2043-04	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (Other) 5.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 8,094,000	[1],[3],[4]	$ 8,424,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (Other)	[1],[3],[4]	Federal National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		5.00%	[1],[3],[4]	5.00%	[5],[7],[8],[9]
Fair Value		$ 9,125,000	[1],[3],[4]	$ 9,497,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (Other) 5.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2043-09	[1],[3],[4]	2043-09	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (Other) 5.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2044-01	[1],[3],[4]	2044-01	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.56% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[1],[3],[4]	$ 8,138,000
Investment Owned Description	[1],[3],[4]	Government National Mortgage Association Pools (Other)
Rate	[1],[3],[4]	4.56%
Maturity	[1],[3],[4]	2065-01
Fair Value	[1],[3],[4]	$ 9,100,000
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (Other) 3.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 8,345,000	[1],[3],[4]	$ 7,402,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (Other)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (Other)	[5],[7],[8],[9]
Rate		3.50%	[1],[3],[4]	3.50%	[5],[7],[8],[9]
Fair Value		$ 8,632,000	[1],[3],[4]	$ 7,678,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (Other) 3.50% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2030-02	[1],[3],[4]	2043-04	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (Other) 3.50% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2043-06	[1],[3],[4]	2043-06	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.61% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 6,676,000	[1],[3],[4]	$ 6,883,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association Pools (Other)	[1],[3],[4]	Government National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		4.61%	[1],[3],[4]	4.61%	[5],[7],[8],[9]
Fair Value		$ 7,465,000	[1],[3],[4]	$ 7,738,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.61% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2064-06	[1],[3],[4]	2064-06	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.61% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2064-11	[1],[3],[4]	2064-11	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (20 Year) 4.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 6,414,000	[1],[3],[4]	$ 6,663,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (20 Year)	[1],[3],[4]	Federal National Mortgage Association Pools (20 Year)	[5],[7],[8],[9]
Rate		4.00%	[1],[3],[4]	4.00%	[5],[7],[8],[9]
Fair Value		$ 6,890,000	[1],[3],[4]	$ 7,213,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (20 Year) 4.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2033-11	[1],[3],[4]	2033-11	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (20 Year) 4.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2033-12	[1],[3],[4]	2033-12	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.59% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 6,063,000	[1],[3],[4]	$ 5,945,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association Pools (Other)	[1],[3],[4]	Government National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		4.59%	[1],[3],[4]	4.59%	[5],[7],[8],[9]
Maturity		2064-11	[1],[3],[4]	2064-11	[5],[7],[8],[9]
Fair Value		$ 6,788,000	[1],[3],[4]	$ 6,695,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 3.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 6,801,000	[1],[3],[4]	$ 20,140,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (30 Year)	[1],[3],[4]	Federal National Mortgage Association Pools (30 Year)	[5],[7],[8],[9]
Rate		3.00%	[1],[3],[4]	3.00%	[5],[7],[8],[9]
Fair Value		$ 6,781,000	[1],[3],[4]	$ 20,425,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 3.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2043-01	[1],[3],[4]	2043-01	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 3.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2043-02	[1],[3],[4]	2043-05	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (15 Year) 3.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 6,400,000	[1],[3],[4]	$ 2,990,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (15 Year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (15 Year)	[5],[7],[8],[9]
Rate		3.00%	[1],[3],[4]	3.00%	[5],[7],[8],[9]
Maturity	[5],[7],[8],[9]			2028-03
Fair Value		$ 6,657,000	[1],[3],[4]	$ 3,114,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (15 Year) 3.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity	[1],[3],[4]	2028-03
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (15 Year) 3.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity	[1],[3],[4]	2030-04
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (Other) 4.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 5,339,000	[1],[3],[4]	$ 5,526,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (Other)	[1],[3],[4]	Federal National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		4.50%	[1],[3],[4]	4.50%	[5],[7],[8],[9]
Maturity		2044-02	[1],[3],[4]	2044-02	[5],[7],[8],[9]
Fair Value		$ 5,908,000	[1],[3],[4]	$ 6,108,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (30 Year) 5.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 5,083,000	[1],[3],[4]	$ 5,131,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (30 Year)	[1],[3],[4]	Federal National Mortgage Association Pools (30 Year)	[5],[7],[8],[9]
Rate		5.50%	[1],[3],[4]	5.50%	[5],[7],[8],[9]
Maturity		2039-10	[1],[3],[4]	2039-10	[5],[7],[8],[9]
Fair Value		$ 5,718,000	[1],[3],[4]	$ 5,741,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (15 Year) 4.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 5,198,000	[1],[3],[4]	$ 5,916,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (15 Year)	[1],[3],[4]	Federal National Mortgage Association Pools (15 Year)	[5],[7],[8],[9]
Rate		4.50%	[1],[3],[4]	4.50%	[5],[7],[8],[9]
Maturity		2026-04	[1],[3],[4]	2026-04	[5],[7],[8],[9]
Fair Value		$ 5,428,000	[1],[3],[4]	$ 6,232,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.68% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 4,121,000	[1],[3],[4]	$ 4,131,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association Pools (Other)	[1],[3],[4]	Government National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		4.68%	[1],[3],[4]	4.68%	[5],[7],[8],[9]
Maturity		2064-09	[1],[3],[4]	2064-09	[5],[7],[8],[9]
Fair Value		$ 4,616,000	[1],[3],[4]	$ 4,647,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.75% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 4,021,000	[1],[3],[4]	$ 4,181,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association Pools (Other)	[1],[3],[4]	Government National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		4.75%	[1],[3],[4]	4.75%	[5],[7],[8],[9]
Maturity		2061-01	[1],[3],[4]	2061-01	[5],[7],[8],[9]
Fair Value		$ 4,249,000	[1],[3],[4]	$ 4,457,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.63% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 3,729,000	[1],[3],[4]	$ 3,809,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association Pools (Other)	[1],[3],[4]	Government National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		4.63%	[1],[3],[4]	4.63%	[5],[7],[8],[9]
Maturity		2064-10	[1],[3],[4]	2064-10	[5],[7],[8],[9]
Fair Value		$ 4,181,000	[1],[3],[4]	$ 4,295,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.80% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 3,456,000	[1],[3],[4]	$ 3,680,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association Pools (Other)	[1],[3],[4]	Government National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		4.80%	[1],[3],[4]	4.80%	[5],[7],[8],[9]
Maturity		2061-02	[1],[3],[4]	2061-02	[5],[7],[8],[9]
Fair Value		$ 3,683,000	[1],[3],[4]	$ 3,933,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.49% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 3,260,000	[1],[3],[4]	$ 3,300,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association Pools (Other)	[1],[3],[4]	Government National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		4.49%	[1],[3],[4]	4.49%	[5],[7],[8],[9]
Maturity		2064-11	[1],[3],[4]	2064-11	[5],[7],[8],[9]
Fair Value		$ 3,620,000	[1],[3],[4]	$ 3,698,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Thirty Year) 3.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[1],[3],[4]	$ 3,434,000
Investment Owned Description	[1],[3],[4]	Government National Mortgage Association Pools (30 Year)
Rate	[1],[3],[4]	3.50%
Maturity	[1],[3],[4]	2045-04
Fair Value	[1],[3],[4]	$ 3,574,000
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pool (Other) 5.49% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 3,274,000	[1],[3],[4]	$ 3,487,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association Pools (Other)	[1],[3],[4]	Government National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		5.49%	[1],[3],[4]	5.49%	[5],[7],[8],[9]
Maturity		2060-04	[1],[3],[4]	2060-04	[5],[7],[8],[9]
Fair Value		$ 3,559,000	[1],[3],[4]	$ 3,811,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (Other) 4.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 2,808,000	[1],[3],[4]	$ 2,836,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (Other)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (Other)	[5],[7],[8],[9]
Rate		4.50%	[1],[3],[4]	4.50%	[5],[7],[8],[9]
Maturity		2044-05	[1],[3],[4]	2044-05	[5],[7],[8],[9]
Fair Value		$ 3,106,000	[1],[3],[4]	$ 3,131,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (Other) 3.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 2,925,000	[1],[3],[4]	$ 3,027,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (Other)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (Other)	[5],[7],[8],[9]
Rate		3.00%	[1],[3],[4]	3.00%	[5],[7],[8],[9]
Maturity		2028-06	[1],[3],[4]	2028-06	[5],[7],[8],[9]
Fair Value		$ 3,034,000	[1],[3],[4]	$ 3,139,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (Thirty Year) 6.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 2,664,000	[1],[3],[4]	$ 2,794,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (30 Year)	[1],[3],[4]	Federal National Mortgage Association Pools (30 Year)	[5],[7],[8],[9]
Rate		6.00%	[1],[3],[4]	6.00%	[5],[7],[8],[9]
Fair Value		$ 3,034,000	[1],[3],[4]	$ 3,164,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (Thirty Year) 6.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2039-09	[1],[3],[4]	2039-09	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (Thirty Year) 6.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2040-02	[1],[3],[4]	2040-02	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.64% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[1],[3],[4]	$ 2,620,000
Investment Owned Description	[1],[3],[4]	Government National Mortgage Association Pools (Other)
Rate	[1],[3],[4]	4.64%
Maturity	[1],[3],[4]	2065-03
Fair Value	[1],[3],[4]	$ 2,947,000
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 5.54% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 2,700,000	[1],[3],[4]	$ 2,931,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association Pools (Other)	[1],[3],[4]	Government National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		5.54%	[1],[3],[4]	5.54%	[5],[7],[8],[9]
Maturity		2060-02	[1],[3],[4]	2060-02	[5],[7],[8],[9]
Fair Value		$ 2,907,000	[1],[3],[4]	$ 3,177,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 5.51% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 2,472,000	[1],[3],[4]	$ 2,668,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association Pools (Other)	[1],[3],[4]	Government National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		5.51%	[1],[3],[4]	5.51%	[5],[7],[8],[9]
Maturity		2060-02	[1],[3],[4]	2060-02	[5],[7],[8],[9]
Fair Value		$ 2,693,000	[1],[3],[4]	$ 2,919,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (15 Year) 4.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 2,204,000	[1],[3],[4]	$ 2,561,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (15 Year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (15 Year)	[5],[7],[8],[9]
Rate		4.00%	[1],[3],[4]	4.00%	[5],[7],[8],[9]
Maturity		2029-02	[1],[3],[4]	2029-02	[5],[7],[8],[9]
Fair Value		$ 2,332,000	[1],[3],[4]	$ 2,728,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 6.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 1,730,000	[1],[3],[4]	$ 1,849,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (30 Year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (30 Year)	[5],[7],[8],[9]
Rate		6.00%	[1],[3],[4]	6.00%	[5],[7],[8],[9]
Fair Value		$ 1,963,000	[1],[3],[4]	$ 2,084,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 6.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2039-04	[1],[3],[4]	2039-04	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 6.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2040-05	[1],[3],[4]	2040-05	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Thirty Year) 4.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[1],[3],[4]	$ 1,556,000
Investment Owned Description	[1],[3],[4]	Government National Mortgage Association Pools (30 Year)
Rate	[1],[3],[4]	4.00%
Maturity	[1],[3],[4]	2045-04
Fair Value	[1],[3],[4]	$ 1,659,000
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (20 Year) 4.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 1,483,000	[1],[3],[4]	$ 1,510,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (20 Year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (20 Year)	[5],[7],[8],[9]
Rate		4.50%	[1],[3],[4]	4.50%	[5],[7],[8],[9]
Maturity		2033-12	[1],[3],[4]	2033-12	[5],[7],[8],[9]
Fair Value		$ 1,621,000	[1],[3],[4]	$ 1,652,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 5.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 886,000	[1],[3],[4]	$ 1,298,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (30 Year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (30 Year)	[5],[7],[8],[9]
Rate		5.00%	[1],[3],[4]	5.00%	[5],[7],[8],[9]
Maturity		2044-07	[1],[3],[4]	2044-07	[5],[7],[8],[9]
Fair Value		$ 972,000	[1],[3],[4]	$ 1,444,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (30 Year) 5.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 803,000	[1],[3],[4]	$ 851,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools (30 Year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools (30 Year)	[5],[7],[8],[9]
Rate		5.50%	[1],[3],[4]	5.50%	[5],[7],[8],[9]
Maturity		2033-08	[1],[3],[4]	2033-08	[5],[7],[8],[9]
Fair Value		$ 904,000	[1],[3],[4]	$ 954,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association Pools (Other) 4.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 222,000	[1],[3],[4]	$ 245,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools (Other)	[1],[3],[4]	Federal National Mortgage Association Pools (Other)	[5],[7],[8],[9]
Rate		4.00%	[1],[3],[4]	4.00%	[5],[7],[8],[9]
Maturity		2037-06	[1],[3],[4]	2037-06	[5],[7],[8],[9]
Fair Value		$ 231,000	[1],[3],[4]	$ 260,000	[5],[7],[8],[9]
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.66% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[5],[7],[8],[9]			$ 3,458,000
Investment Owned Description	[5],[7],[8],[9]			Government National Mortgage Association Pools (Other)
Rate	[5],[7],[8],[9]			4.66%
Maturity	[5],[7],[8],[9]			2063-01
Fair Value	[5],[7],[8],[9]			$ 3,792,000
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.67% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[5],[7],[8],[9]			$ 3,290,000
Investment Owned Description	[5],[7],[8],[9]			Government National Mortgage Association Pools (Other)
Rate	[5],[7],[8],[9]			4.67%
Maturity	[5],[7],[8],[9]			2061-10
Fair Value	[5],[7],[8],[9]			$ 3,551,000
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (Other) 4.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[5],[7],[8],[9]			$ 2,238,000
Investment Owned Description	[5],[7],[8],[9]			Federal Home Loan Mortgage Corporation Pools (Other)
Rate	[5],[7],[8],[9]			4.00%
Fair Value	[5],[7],[8],[9]			$ 2,398,000
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (Other) 4.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity	[5],[7],[8],[9]			2043-07
Principal And Interest - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools (Other) 4.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity	[5],[7],[8],[9]			2044-10
Principal And Interest - Fixed Rate Agency Securities [Member] | Government National Mortgage Association Pools (Other) 4.65% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[5],[7],[8],[9]			$ 1,079,000
Investment Owned Description	[5],[7],[8],[9]			Government National Mortgage Association Pools (Other)
Rate	[5],[7],[8],[9]			4.65%
Maturity	[5],[7],[8],[9]			2061-11
Fair Value	[5],[7],[8],[9]			$ 1,167,000
Interest Only - Fixed Rate Agency Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		1.32%	[1],[2],[3],[4]	1.20%	[5],[6],[7],[8],[9]
Fair Value		$ 10,235,000	[1],[3],[4]	$ 9,441,000	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association 4.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 17,154,000	[1],[3],[4]	$ 30,581,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association	[1],[3],[4]	Federal National Mortgage Association	[5],[7],[8],[9]
Rate		4.50%	[1],[3],[4]	4.50%	[5],[7],[8],[9]
Fair Value		$ 2,433,000	[1],[3],[4]	$ 3,946,000	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association 4.50% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2020-12	[1],[3],[4]	2020-12	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association 4.50% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2043-05	[1],[3],[4]	2043-06	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association 5.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 14,231,000	[1],[3],[4]	$ 17,397,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association	[1],[3],[4]	Federal National Mortgage Association	[5],[7],[8],[9]
Rate		5.00%	[1],[3],[4]	5.00%	[5],[7],[8],[9]
Fair Value		$ 2,071,000	[1],[3],[4]	$ 1,899,000	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association 5.00% [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2036-01	[1],[3],[4]	2036-01	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association 5.00% [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2040-05	[1],[3],[4]	2040-05	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Government National Mortgage Association 5.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[1],[3],[4]	$ 9,988,000
Investment Owned Description	[1],[3],[4]	Government National Mortgage Association
Rate	[1],[3],[4]	5.50%
Maturity	[1],[3],[4]	2043-11
Fair Value	[1],[3],[4]	$ 1,888,000
Interest Only - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation 3.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 6,499,000	[1],[3],[4]	$ 6,935,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation	[1],[3],[4]	Federal Home Loan Mortgage Corporation	[5],[7],[8],[9]
Rate		3.50%	[1],[3],[4]	3.50%	[5],[7],[8],[9]
Maturity		2032-12	[1],[3],[4]	2032-12	[5],[7],[8],[9]
Fair Value		$ 919,000	[1],[3],[4]	$ 1,001,000	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation 5.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 6,150,000	[1],[3],[4]	$ 7,621,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation	[1],[3],[4]	Federal Home Loan Mortgage Corporation	[5],[7],[8],[9]
Rate		5.00%	[1],[3],[4]	5.00%	[5],[7],[8],[9]
Maturity		2040-03	[1],[3],[4]	2040-03	[5],[7],[8],[9]
Fair Value		$ 757,000	[1],[3],[4]	$ 815,000	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association 3.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 4,311,000	[1],[3],[4]	$ 4,691,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association	[1],[3],[4]	Federal National Mortgage Association	[5],[7],[8],[9]
Rate		3.00%	[1],[3],[4]	3.00%	[5],[7],[8],[9]
Maturity		2041-09	[1],[3],[4]	2041-09	[5],[7],[8],[9]
Fair Value		$ 517,000	[1],[3],[4]	$ 554,000	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Government National Mortgage Association 5.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[1],[3],[4]	$ 4,652,000
Investment Owned Description	[1],[3],[4]	Government National Mortgage Association
Rate	[1],[3],[4]	5.00%
Maturity	[1],[3],[4]	2037-05
Fair Value	[1],[3],[4]	$ 462,000
Interest Only - Fixed Rate Agency Securities [Member] | Government National Mortgage Association 4.75% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 2,142,000	[1],[3],[4]	$ 2,142,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association	[1],[3],[4]	Government National Mortgage Association	[5],[7],[8],[9]
Rate		4.75%	[1],[3],[4]	4.75%	[5],[7],[8],[9]
Maturity		2040-07	[1],[3],[4]	2040-07	[5],[7],[8],[9]
Fair Value		$ 460,000	[1],[3],[4]	$ 461,000	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association 5.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 1,925,000	[1],[3],[4]	$ 2,242,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association	[1],[3],[4]	Federal National Mortgage Association	[5],[7],[8],[9]
Rate		5.50%	[1],[3],[4]	5.50%	[5],[7],[8],[9]
Maturity		2040-10	[1],[3],[4]	2040-10	[5],[7],[8],[9]
Fair Value		$ 293,000	[1],[3],[4]	$ 285,000	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association 4.00% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 1,529,000	[1],[3],[4]	$ 1,826,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association	[1],[3],[4]	Federal National Mortgage Association	[5],[7],[8],[9]
Rate		4.00%	[1],[3],[4]	4.00%	[5],[7],[8],[9]
Maturity		2039-05	[1],[3],[4]	2039-05	[5],[7],[8],[9]
Fair Value		$ 267,000	[1],[3],[4]	$ 287,000	[5],[7],[8],[9]
Interest Only - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation 5.50% [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 1,342,000	[1],[3],[4]	$ 1,609,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation	[1],[3],[4]	Federal Home Loan Mortgage Corporation	[5],[7],[8],[9]
Rate		5.50%	[1],[3],[4]	5.50%	[5],[7],[8],[9]
Maturity		2039-01	[1],[3],[4]	2039-01	[5],[7],[8],[9]
Fair Value		$ 168,000	[1],[3],[4]	$ 193,000	[5],[7],[8],[9]
TBA - Fixed Rate Agency Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		3.21%	[1],[2],[3],[4]	9.18%	[5],[6],[7],[8],[9]
Current Principal/Notional Amount		$ 25,090,000		$ 71,598,000
Fair Value		24,933,000	[1],[3],[4]	72,410,000	[5],[7],[8],[9]
TBA - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation (30 Year) 3.00%[Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[1],[3],[4]	$ 25,090,000
Investment Owned Description	[1],[3],[4]	Federal Home Loan Mortgage Corporation (30 Year)
Rate	[1],[3],[4]	3.00%
Maturity	[1],[3],[4]	2015-07
Fair Value	[1],[3],[4]	$ 24,933,000
TBA - Fixed Rate Agency Securities [Member] | Federal National Mortgage Association (30 Year) [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[5],[7],[8],[9]			$ 44,478,000
Investment Owned Description	[5],[7],[8],[9]			Federal National Mortgage Association (30 Year)
Rate	[5],[7],[8],[9]			3.00%
Maturity	[5],[7],[8],[9]			2015-01
Fair Value	[5],[7],[8],[9]			$ 45,015,000
TBA - Fixed Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation (30 Year) [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[5],[7],[8],[9]			$ 27,120,000
Investment Owned Description	[5],[7],[8],[9]			Federal Home Loan Mortgage Corporation (30 Year)
Rate	[5],[7],[8],[9]			3.00%
Maturity	[5],[7],[8],[9]			2015-01
Fair Value	[5],[7],[8],[9]			$ 27,395,000
Fixed Rate Agency Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		142.53%	[1],[2],[3],[4]	158.20%	[5],[6],[7],[8],[9]
Fair Value		$ 1,107,568,000	[1],[3],[4]	$ 1,247,493,000	[5],[7],[8],[9]
Investment Owned, at Cost		$ 1,100,124,000	[1],[3],[4]	$ 1,230,414,000	[5],[7],[8],[9]
Principal And Interest - Floating Rate Agency Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		2.79%	[1],[2],[3],[4]	2.62%	[5],[6],[7],[8],[9]
Fair Value		$ 21,687,000	[1],[3],[4]	$ 20,647,000	[5],[7],[8],[9]
Principal And Interest - Floating Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 9,144,000	[1],[3],[4]	$ 9,737,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation Pools	[1],[3],[4]	Federal Home Loan Mortgage Corporation Pools	[5],[7],[8],[9]
Fair Value		$ 9,698,000	[1],[3],[4]	$ 10,282,000	[5],[7],[8],[9]
Principal And Interest - Floating Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		2.36%	[1],[3],[4]	2.36%	[5],[7],[8],[9]
Maturity		2037-06	[1],[3],[4]	2037-06	[5],[7],[8],[9]
Principal And Interest - Floating Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation Pools [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		5.94%	[1],[3],[4]	5.94%	[5],[7],[8],[9]
Maturity		2044-05	[1],[3],[4]	2044-05	[5],[7],[8],[9]
Principal And Interest - Floating Rate Agency Securities [Member] | Federal National Mortgage Association Pools [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 8,689,000	[1],[3],[4]	$ 6,265,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association Pools	[1],[3],[4]	Federal National Mortgage Association Pools	[5],[7],[8],[9]
Fair Value		$ 9,184,000	[1],[3],[4]	$ 6,692,000	[5],[7],[8],[9]
Principal And Interest - Floating Rate Agency Securities [Member] | Federal National Mortgage Association Pools [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		2.75%	[1],[3],[4]	5.04%	[5],[7],[8],[9]
Maturity		2035-09	[1],[3],[4]	2035-09	[5],[7],[8],[9]
Principal And Interest - Floating Rate Agency Securities [Member] | Federal National Mortgage Association Pools [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		6.05%	[1],[3],[4]	6.05%	[5],[7],[8],[9]
Maturity		2045-05	[1],[3],[4]	2037-09	[5],[7],[8],[9]
Principal And Interest - Floating Rate Agency Securities [Member] | Government National Mortgage Association Pools [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 2,587,000	[1],[3],[4]	$ 3,404,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association Pools	[1],[3],[4]	Government National Mortgage Association Pool	[5],[7],[8],[9]
Rate		2.53%	[1],[3],[4]	2.47%	[5],[7],[8],[9]
Maturity		2064-11	[1],[3],[4]	2064-11	[5],[7],[8],[9]
Fair Value		$ 2,805,000	[1],[3],[4]	$ 3,673,000	[5],[7],[8],[9]
Interest Only - Floating Rate Agency Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		2.59%	[1],[2],[3],[4]	2.78%	[5],[6],[7],[8],[9]
Fair Value		$ 20,150,000	[1],[3],[4]	$ 21,944,000	[5],[7],[8],[9]
Interest Only - Floating Rate Agency Securities [Member] | Government National Mortgage Association [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 208,688,000	[1],[3],[4]	$ 183,794,000	[5],[7],[8],[9]
Investment Owned Description		Government National Mortgage Association	[1],[3],[4]	Government National Mortgage Association	[5],[7],[8],[9]
Fair Value		$ 14,047,000	[1],[3],[4]	$ 13,591,000	[5],[7],[8],[9]
Interest Only - Floating Rate Agency Securities [Member] | Government National Mortgage Association [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		0.40%	[1],[3],[4]	0.40%	[5],[7],[8],[9]
Maturity		2042-11	[1],[3],[4]	2042-11	[5],[7],[8],[9]
Interest Only - Floating Rate Agency Securities [Member] | Government National Mortgage Association [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		6.56%	[1],[3],[4]	6.58%	[5],[7],[8],[9]
Maturity		2063-10	[1],[3],[4]	2063-10	[5],[7],[8],[9]
Interest Only - Floating Rate Agency Securities [Member] | Federal National Mortgage Association [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 18,745,000	[1],[3],[4]	$ 28,251,000	[5],[7],[8],[9]
Investment Owned Description		Federal National Mortgage Association	[1],[3],[4]	Federal National Mortgage Association	[5],[7],[8],[9]
Fair Value		$ 2,992,000	[1],[3],[4]	$ 4,508,000	[5],[7],[8],[9]
Interest Only - Floating Rate Agency Securities [Member] | Federal National Mortgage Association [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		5.50%	[1],[3],[4]	5.50%	[5],[7],[8],[9]
Maturity		2035-04	[1],[3],[4]	2035-04	[5],[7],[8],[9]
Interest Only - Floating Rate Agency Securities [Member] | Federal National Mortgage Association [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		6.51%	[1],[3],[4]	6.58%	[5],[7],[8],[9]
Maturity		2041-12	[1],[3],[4]	2043-07	[5],[7],[8],[9]
Interest Only - Floating Rate Agency Securities [Member] | Resecuritization of Government National Mortgage Association [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 22,292,000	[1],[3],[4],[10]	$ 21,145,000	[5],[7],[8],[9],[11]
Investment Owned Description		Resecuritization of Government National Mortgage Association (d)	[1],[3],[4],[10]	Resecuritization of Government National Mortgage Association (f)	[5],[7],[8],[9],[11]
Rate		4.31%	[1],[3],[4],[10]	4.34%	[5],[7],[8],[9],[11]
Maturity		2060-08	[1],[3],[4],[10]	2060-08	[5],[7],[8],[9],[11]
Fair Value		$ 1,853,000	[1],[3],[4],[10]	$ 1,973,000	[5],[7],[8],[9],[11]
Interest Only - Floating Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 7,286,000	[1],[3],[4]	$ 13,048,000	[5],[7],[8],[9]
Investment Owned Description		Federal Home Loan Mortgage Corporation	[1],[3],[4]	Federal Home Loan Mortgage Corporation	[5],[7],[8],[9]
Fair Value		$ 1,258,000	[1],[3],[4]	$ 1,872,000	[5],[7],[8],[9]
Interest Only - Floating Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		5.81%	[1],[3],[4]	5.84%	[5],[7],[8],[9]
Maturity		2036-03	[1],[3],[4]	2036-03	[5],[7],[8],[9]
Interest Only - Floating Rate Agency Securities [Member] | Federal Home Loan Mortgage Corporation [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		6.44%	[1],[3],[4]	6.47%	[5],[7],[8],[9]
Maturity		2039-08	[1],[3],[4]	2039-08	[5],[7],[8],[9]
Floating Rate Agency Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		5.38%	[1],[2],[3],[4]	5.40%	[5],[6],[7],[8],[9]
Fair Value		$ 41,837,000	[1],[3],[4]	$ 42,591,000	[5],[7],[8],[9]
Investment Owned, at Cost		$ 40,564,000	[1],[3],[4]	$ 41,787,000	[5],[7],[8],[9]
Agency Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		147.91%	[1],[2],[3],[4]	163.60%	[5],[6],[7],[8],[9]
Fair Value		$ 1,149,405,000	[1],[3],[4]	$ 1,290,084,000	[5],[7],[8],[9]
Investment Owned, at Cost		$ 1,140,688,000	[1],[3],[4]	$ 1,272,201,000	[5],[7],[8],[9]
Principal And Interest - Private Label Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		55.21%	[2],[3],[4]	76.95%	[6],[7],[8],[9]
Fair Value		$ 429,062,000	[3],[4]	$ 606,757,000	[7],[8],[9]
Investment Owned, at Cost		$ 406,774,000	[3],[4]	$ 571,834,000	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | North America [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		49.19%	[2],[3],[4]	71.67%	[6],[7],[8],[9]
Fair Value		$ 382,248,000	[3],[4]	$ 565,117,000	[7],[8],[9]
Investment Owned, at Cost		$ 355,328,000	[3],[4]	$ 526,764,000	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Europe [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		6.02%	[2],[3],[4]	5.28%	[6],[7],[8],[9]
Fair Value		$ 46,814,000	[3],[4]	$ 41,640,000	[7],[8],[9]
Investment Owned, at Cost		51,446,000	[3],[4]	45,070,000	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 123,882,000	[3],[4]	$ 117,877,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Fair Value		$ 36,606,000	[3],[4]	$ 39,240,000	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Mortgage-related Commercial [Member] | Europe [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 15,986,000	[3],[4]	$ 12,784,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Fair Value		$ 11,263,000	[3],[4]	$ 12,837,000	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 541,110,000	[3],[4]	$ 799,083,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Fair Value		$ 345,642,000	[3],[4]	$ 525,877,000	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Mortgage-related Residential [Member] | Europe [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 38,129,000	[3],[4]	$ 33,294,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Fair Value		$ 35,551,000	[3],[4]	$ 28,803,000	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Minimum [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		3.00%	[3],[4]	3.00%	[7],[8],[9]
Maturity		2045-07	[3],[4]	2045-07	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Minimum [Member] | Mortgage-related Commercial [Member] | Europe [Member]
Schedule of Investments [Line Items]
Rate		0.00%	[3],[4]	0.00%	[7],[8],[9]
Maturity		2015-07	[3],[4]	2015-07	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		0.00%	[3],[4]	0.00%	[7],[8],[9]
Maturity		2019-05	[3],[4]	2019-05	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Minimum [Member] | Mortgage-related Residential [Member] | Europe [Member]
Schedule of Investments [Line Items]
Rate		0.00%	[3],[4]	0.34%	[7],[8],[9]
Maturity		2025-06	[3],[4]	2038-08	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Maximum [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		5.40%	[3],[4]	5.40%	[7],[8],[9]
Maturity		2049-12	[3],[4]	2049-12	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Maximum [Member] | Mortgage-related Commercial [Member] | Europe [Member]
Schedule of Investments [Line Items]
Rate		11.00%	[3],[4]	12.25%	[7],[8],[9]
Maturity		2019-06	[3],[4]	2024-03	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		9.35%	[3],[4]	9.35%	[7],[8],[9]
Maturity		2046-09	[3],[4]	2047-07	[7],[8],[9]
Principal And Interest - Private Label Securities [Member] | Various Issuer [Member] | Maximum [Member] | Mortgage-related Residential [Member] | Europe [Member]
Schedule of Investments [Line Items]
Rate		5.32%	[3],[4]	4.41%	[7],[8],[9]
Maturity		2044-06	[3],[4]	2061-01	[7],[8],[9]
Principal Only - Private Label Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		0.45%	[2],[3],[4]	0.41%	[6],[7],[8],[9]
Fair Value		$ 3,495,000	[3],[4]	$ 3,248,000	[7],[8],[9]
Investment Owned, at Cost		2,876,000	[3],[4]	2,737,000	[7],[8],[9]
Principal Only - Private Label Securities [Member] | Various Issuer [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 5,800,000	[3],[4]	$ 5,800,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Rate		0.00%	[3],[4]	0.00%	[7],[8],[9]
Maturity		2030-08	[3],[4]	2030-08	[7],[8],[9]
Fair Value		$ 3,495,000	[3],[4]	$ 3,248,000	[7],[8],[9]
Interest Only - Private Label Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		0.40%	[2],[3],[4]	0.31%	[6],[7],[8],[9]
Fair Value		$ 3,076,000	[3],[4]	$ 2,423,000	[7],[8],[9]
Investment Owned, at Cost		2,179,000	[3],[4]	1,602,000	[7],[8],[9]
Interest Only - Private Label Securities [Member] | Various Issuer [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 27,254,000	[3],[4]	$ 17,666,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Fair Value		$ 1,965,000	[3],[4]	$ 1,234,000	[7],[8],[9]
Interest Only - Private Label Securities [Member] | Various Issuer [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 44,539,000	[3],[4]	$ 47,557,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Fair Value		$ 1,111,000	[3],[4]	$ 1,189,000	[7],[8],[9]
Interest Only - Private Label Securities [Member] | Various Issuer [Member] | Minimum [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		1.42%	[3],[4]	1.42%	[7],[8],[9]
Maturity		2047-10	[3],[4]	2047-10	[7],[8],[9]
Interest Only - Private Label Securities [Member] | Various Issuer [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		0.50%	[3],[4]	0.50%	[7],[8],[9]
Maturity		2044-06	[3],[4]	2044-06	[7],[8],[9]
Interest Only - Private Label Securities [Member] | Various Issuer [Member] | Maximum [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		1.60%	[3],[4]	1.45%	[7],[8],[9]
Maturity		2048-02	[3],[4]	2047-12	[7],[8],[9]
Interest Only - Private Label Securities [Member] | Various Issuer [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		2.00%	[3],[4]	2.00%	[7],[8],[9]
Maturity		2047-09	[3],[4]	2047-09	[7],[8],[9]
Other Private Label Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		0.00%	[2],[3],[4]	0.00%	[6],[7],[8],[9]
Fair Value		$ 0	[3],[4]	$ 0	[7],[8],[9]
Investment Owned, at Cost		292,000	[3],[4]	302,000	[7],[8],[9]
Other Private Label Securities [Member] | Various Issuer [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 0	[3],[4]	$ 0	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Rate		0.00%	[3],[4]	0.00%	[7],[8],[9]
Fair Value		$ 0	[3],[4]	$ 0	[7],[8],[9]
Other Private Label Securities [Member] | Various Issuer [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 107,841,000	[3],[4]	$ 111,629,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Rate		0.00%	[3],[4]	0.00%	[7],[8],[9]
Maturity		2037-06	[3],[4]	2037-06	[7],[8],[9]
Fair Value		$ 0	[3],[4]	$ 0	[7],[8],[9]
Other Private Label Securities [Member] | Various Issuer [Member] | Minimum [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2045-07	[3],[4]	2045-07	[7],[8],[9]
Other Private Label Securities [Member] | Various Issuer [Member] | Maximum [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2048-02	[3],[4]	2047-10	[7],[8],[9]
Private Label Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		56.06%	[2],[3],[4]	77.67%	[6],[7],[8],[9]
Fair Value		$ 435,633,000	[3],[4]	$ 612,428,000	[7],[8],[9]
Investment Owned, at Cost		$ 412,121,000	[3],[4]	$ 576,475,000	[7],[8],[9]
Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		203.97%	[2],[3],[4]	241.27%	[6],[7],[8],[9]
Fair Value		$ 1,585,038,000	[3],[4]	$ 1,902,512,000	[7],[8],[9]
Investment Owned, at Cost		$ 1,552,809,000	[3],[4]	$ 1,848,676,000	[7],[8],[9]
Collateralized Loan Obligations [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		12.66%	[2],[3],[4]	15.47%	[6],[7],[8],[9]
Fair Value		$ 98,388,000	[3],[4]	$ 121,994,000	[7],[8],[9]
Investment Owned, at Cost		$ 102,405,000	[3],[4]	$ 124,562,000	[7],[8],[9]
Collateralized Loan Obligations [Member] | North America [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		6.01%	[2],[3],[4]	13.05%	[6],[7],[8],[9]
Fair Value		$ 46,709,000	[3],[4]	$ 102,883,000	[7],[8],[9]
Investment Owned, at Cost		$ 48,801,000	[3],[4]	$ 104,547,000	[7],[8],[9]
Collateralized Loan Obligations [Member] | Europe [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		6.65%	[2],[3],[4]	2.42%	[6],[7],[8],[9]
Fair Value		$ 51,679,000	[3],[4]	$ 19,111,000	[7],[8],[9]
Investment Owned, at Cost		53,604,000	[3],[4]	20,015,000	[7],[8],[9]
Collateralized Loan Obligations [Member] | Various Issuer [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 68,550,000	[3],[4]	$ 128,188,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Fair Value		$ 46,709,000	[3],[4]	$ 102,883,000	[7],[8],[9]
Collateralized Loan Obligations [Member] | Various Issuer [Member] | Europe [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 63,573,000	[3],[4]	$ 19,786,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Fair Value		$ 51,679,000	[3],[4]	$ 19,111,000	[7],[8],[9]
Collateralized Loan Obligations [Member] | Various Issuer [Member] | Minimum [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		0.00%	[3],[4]	0.00%	[7],[8],[9]
Maturity		2016-05	[3],[4]	2017-02	[7],[8],[9]
Collateralized Loan Obligations [Member] | Various Issuer [Member] | Minimum [Member] | Europe [Member]
Schedule of Investments [Line Items]
Rate		0.00%	[3],[4]	1.73%	[7],[8],[9]
Maturity		2017-03	[3],[4]	2017-03	[7],[8],[9]
Collateralized Loan Obligations [Member] | Various Issuer [Member] | Maximum [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		9.77%	[3],[4]	9.73%	[7],[8],[9]
Maturity		2068-09	[3],[4]	2068-09	[7],[8],[9]
Collateralized Loan Obligations [Member] | Various Issuer [Member] | Maximum [Member] | Europe [Member]
Schedule of Investments [Line Items]
Rate		7.59%	[3],[4]	4.00%	[7],[8],[9]
Maturity		2056-12	[3],[4]	2023-03	[7],[8],[9]
Consumer loans and asset-backed securities backed by consumer loans [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		6.75%	[2],[3],[4],[12]	3.08%	[6],[7],[8],[9],[13]
Fair Value		$ 52,457,000	[3],[4],[12]	$ 24,294,000	[7],[8],[9],[13]
Investment Owned, at Cost		$ 52,216,000	[3],[4],[12]	$ 24,824,000	[7],[8],[9],[13]
Consumer loans and asset-backed securities backed by consumer loans [Member] | North America [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		6.24%	[2],[3],[4],[12]	2.59%	[6],[7],[8],[9],[13]
Fair Value		$ 48,528,000	[3],[4],[12]	$ 20,434,000	[7],[8],[9],[13]
Investment Owned, at Cost		$ 47,914,000	[3],[4],[12]	$ 20,549,000	[7],[8],[9],[13]
Consumer loans and asset-backed securities backed by consumer loans [Member] | Europe [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		0.51%	[2],[3],[4],[12]	0.49%	[6],[7],[8],[9],[13]
Fair Value		$ 3,929,000	[3],[4],[12]	$ 3,860,000	[7],[8],[9],[13]
Investment Owned, at Cost		4,302,000	[3],[4],[12]	4,275,000	[7],[8],[9],[13]
Consumer loans and asset-backed securities backed by consumer loans [Member] | Various Issuer [Member] | Consumer [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 46,202,000	[3],[4],[12],[14]	$ 17,624,000	[7],[8],[9],[13]
Investment Owned Description		Various	[3],[4],[12],[14]	Various	[7],[8],[9],[13]
Fair Value		$ 48,528,000	[3],[4],[12],[14]	$ 20,434,000	[7],[8],[9],[13]
Consumer loans and asset-backed securities backed by consumer loans [Member] | Various Issuer [Member] | Consumer [Member] | Europe [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 3,554,000	[3],[4],[12]	$ 3,860,000	[7],[8],[9],[13]
Investment Owned Description		Various	[3],[4],[12]	Various	[7],[8],[9],[13]
Rate		0.00%	[3],[4],[12]	0.00%	[7],[8],[9],[13]
Maturity		2024-08	[3],[4],[12]	2024-08	[7],[8],[9],[13]
Fair Value		$ 3,929,000	[3],[4],[12]	$ 3,860,000	[7],[8],[9],[13]
Consumer loans and asset-backed securities backed by consumer loans [Member] | Various Issuer [Member] | Minimum [Member] | Consumer [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		0.00%	[3],[4],[12],[14]	0.00%	[7],[8],[9],[13]
Maturity		2015-07	[3],[4],[12],[14]	2015-06	[7],[8],[9],[13]
Consumer loans and asset-backed securities backed by consumer loans [Member] | Various Issuer [Member] | Maximum [Member] | Consumer [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		49.00%	[3],[4],[12],[14]	49.00%	[7],[8],[9],[13]
Maturity		2020-06	[3],[4],[12],[14]	2019-07	[7],[8],[9],[13]
Corporate Debt [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		3.38%	[2],[3],[4]	5.41%	[6],[7],[8],[9]
Fair Value		$ 26,278,000	[3],[4]	$ 42,708,000	[7],[8],[9]
Investment Owned, at Cost		$ 29,543,000	[3],[4]	43,585,000	[7],[8],[9]
Corporate Debt [Member] | North America [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity	[2],[3],[4]	1.87%
Fair Value	[3],[4]	$ 14,518,000
Investment Owned, at Cost	[3],[4]	$ 17,465,000
Corporate Debt [Member] | Europe [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity	[2],[3],[4]	1.51%
Fair Value	[3],[4]	$ 11,760,000
Investment Owned, at Cost	[3],[4]	12,078,000
Corporate Debt [Member] | Various Issuer [Member] | Basic Materials [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 4,070,000	[3],[4]	$ 5,440,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Rate		11.75%	[3],[4]	9.00%	[7],[8],[9]
Maturity		2019-01	[3],[4]	2019-11	[7],[8],[9]
Fair Value		$ 2,381,000	[3],[4]	$ 5,114,000	[7],[8],[9]
Corporate Debt [Member] | Various Issuer [Member] | Communications [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[7],[8],[9]			$ 15,255,000
Investment Owned Description	[7],[8],[9]			Various
Fair Value	[7],[8],[9]			$ 14,671,000
Corporate Debt [Member] | Various Issuer [Member] | Communications [Member] | Europe [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[3],[4]	$ 8,155,000
Investment Owned Description	[3],[4]	Various
Rate	[3],[4]	14.00%
Maturity	[3],[4]	2018-10
Fair Value	[3],[4]	$ 8,889,000
Corporate Debt [Member] | Various Issuer [Member] | Consumer [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 2,866,000	[3],[4]	$ 6,543,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Maturity	[3],[4]	2020-07
Fair Value		$ 1,859,000	[3],[4]	$ 5,867,000	[7],[8],[9]
Corporate Debt [Member] | Various Issuer [Member] | Consumer [Member] | Europe [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[3],[4]	$ 16,136,000
Investment Owned Description	[3],[4]	Various
Rate	[3],[4]	7.50%
Maturity	[3],[4]	2016-12
Fair Value	[3],[4]	$ 698,000
Corporate Debt [Member] | Various Issuer [Member] | Diversified [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[7],[8],[9]			$ 2,793,000
Investment Owned Description	[7],[8],[9]			Various
Rate	[7],[8],[9]			7.50%
Maturity	[7],[8],[9]			2020-05
Fair Value	[7],[8],[9]			$ 2,779,000
Corporate Debt [Member] | Various Issuer [Member] | Energy [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 3,066,000	[3],[4]	$ 7,475,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Fair Value		$ 1,878,000	[3],[4]	$ 5,877,000	[7],[8],[9]
Corporate Debt [Member] | Various Issuer [Member] | Energy [Member] | Europe [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[3],[4]	$ 2,800,000
Investment Owned Description	[3],[4]	Various
Rate	[3],[4]	12.25%
Maturity	[3],[4]	2017-01
Fair Value	[3],[4]	$ 2,173,000
Corporate Debt [Member] | Various Issuer [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 8,500,000	[3],[4]	$ 8,500,000	[7],[8],[9]
Investment Owned Description		Various	[3],[4]	Various	[7],[8],[9]
Rate		15.00%	[3],[4]	15.00%	[7],[8],[9]
Maturity		2019-10	[3],[4]	2019-10	[7],[8],[9]
Fair Value		$ 8,400,000	[3],[4]	$ 8,400,000	[7],[8],[9]
Corporate Debt [Member] | Various Issuer [Member] | Minimum [Member] | Communications [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate	[7],[8],[9]			7.75%
Maturity	[7],[8],[9]			2016-12
Corporate Debt [Member] | Various Issuer [Member] | Minimum [Member] | Consumer [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		5.50%	[3],[4]	5.25%	[7],[8],[9]
Maturity	[7],[8],[9]			2016-06
Corporate Debt [Member] | Various Issuer [Member] | Minimum [Member] | Energy [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		7.00%	[3],[4]	7.00%	[7],[8],[9]
Maturity		2018-11	[3],[4]	2017-01	[7],[8],[9]
Corporate Debt [Member] | Various Issuer [Member] | Maximum [Member] | Communications [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate	[7],[8],[9]			14.00%
Maturity	[7],[8],[9]			2019-06
Corporate Debt [Member] | Various Issuer [Member] | Maximum [Member] | Consumer [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		8.50%	[3],[4]	11.50%	[7],[8],[9]
Maturity	[7],[8],[9]			2021-09
Corporate Debt [Member] | Various Issuer [Member] | Maximum [Member] | Energy [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		9.75%	[3],[4]	12.25%	[7],[8],[9]
Maturity		2019-06	[3],[4]	2019-06	[7],[8],[9]
Mortgage Loans [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		9.81%	[2],[3],[4],[12]	7.08%	[6],[7],[8],[9],[13]
Fair Value		$ 76,239,000	[3],[4],[12]	$ 55,791,000	[7],[8],[9],[13]
Investment Owned, at Cost		76,803,000	[3],[4],[12]	55,664,000	[7],[8],[9],[13]
Mortgage Loans [Member] | Various Issuer [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 70,645,000	[3],[4],[12],[15]	$ 32,519,000	[7],[8],[9],[13],[16]
Investment Owned Description		Various	[3],[4],[12],[15]	Various	[7],[8],[9],[13],[16]
Fair Value		$ 55,310,000	[3],[4],[12],[15]	$ 28,309,000	[7],[8],[9],[13],[16]
Mortgage Loans [Member] | Various Issuer [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 34,412,000	[3],[4],[12]	$ 44,336,000	[7],[8],[9],[13]
Investment Owned Description		Various	[3],[4],[12]	Various	[7],[8],[9],[13]
Rate		0.00%	[3],[4],[12]	0.00%	[7],[8],[9],[13]
Fair Value		$ 20,929,000	[3],[4],[12]	$ 27,482,000	[7],[8],[9],[13]
Mortgage Loans [Member] | Various Issuer [Member] | Minimum [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		2.50%	[3],[4],[12],[15]	0.00%	[7],[8],[9],[13],[16]
Maturity		2015-08	[3],[4],[12],[15]	2015-01	[7],[8],[9],[13],[16]
Mortgage Loans [Member] | Various Issuer [Member] | Minimum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2021-07	[3],[4],[12]	2018-02	[7],[8],[9],[13]
Mortgage Loans [Member] | Various Issuer [Member] | Maximum [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Rate		12.00%	[3],[4],[12],[15]	10.00%	[7],[8],[9],[13],[16]
Maturity		2045-07	[3],[4],[12],[15]	2017-11	[7],[8],[9],[13],[16]
Mortgage Loans [Member] | Various Issuer [Member] | Maximum [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Maturity		2055-04	[3],[4],[12]	2054-10	[7],[8],[9],[13]
Real Estate Owned [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		1.22%	[2],[3],[4],[12],[17]	1.10%	[6],[7],[8],[9],[13],[18]
Fair Value		$ 9,502,000	[3],[4],[12],[17]	$ 8,635,000	[7],[8],[9],[13],[18]
Investment Owned, at Cost		9,087,000	[3],[4],[12],[17]	8,748,000	[7],[8],[9],[13],[18]
Real Estate Owned [Member] | Single-Family Houses [Member] | Real estate-related [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 48	[3],[4],[12],[17]	$ 50	[7],[8],[9],[13],[18]
Investment Owned Description		Single-Family Houses	[3],[4],[12],[17]	Single-Family Houses	[7],[8],[9],[13],[18]
Fair Value		$ 7,458,000	[3],[4],[12],[17]	$ 6,591,000	[7],[8],[9],[13],[18]
Real Estate Owned [Member] | Commercial Property [Member] | Real estate-related [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount		$ 1	[3],[4],[12],[17]	$ 1	[7],[8],[9],[13],[18]
Investment Owned Description		Commercial Property	[3],[4],[12],[17]	Commercial Property	[7],[8],[9],[13],[18]
Fair Value		$ 2,044,000	[3],[4],[12],[17]	$ 2,044,000	[7],[8],[9],[13],[18]
Private Corporate Equity Investments [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		2.88%	[2],[3],[4]	1.84%	[6],[7],[8],[9]
Fair Value		$ 22,349,000	[3],[4]	$ 14,512,000	[7],[8],[9]
Investment Owned, at Cost		$ 22,057,000	[3],[4]	$ 14,717,000	[7],[8],[9]
Private Corporate Equity Investments [Member] | Non-Exchange Traded Preferred Equity Investment in Commercial Mortgage-related Private Partnership | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Investment Owned Description		Non-Exchange Traded Preferred Equity Investment in Commercial Mortgage-Related Private Partnership	[3],[4]	Non-Exchange Traded Preferred Equity Investment in Commercial Mortgage-Related Private Partnership	[7],[8],[9]
Fair Value		$ 8,171,000	[3],[4]	$ 6,241,000	[7],[8],[9]
Investment Owned, Balance, Shares		8,171	[3],[4]	6,241	[7],[8],[9]
Private Corporate Equity Investments [Member] | Non-Exchange Traded Corporate Equity [Member] | Consumer [Member] | North America [Member]
Schedule of Investments [Line Items]
Investment Owned Description		Non-Exchange Traded Corporate Equity	[3],[4]	Non-Exchange Traded Corporate Equity	[7],[8],[9]
Fair Value		$ 2,810,000	[3],[4]	$ 2,090,000	[7],[8],[9]
Investment Owned, Balance, Shares		1,578	[3],[4]	32	[7],[8],[9]
Private Corporate Equity Investments [Member] | Non-Exchange Traded Corporate Equity [Member] | Diversified [Member] | North America [Member]
Schedule of Investments [Line Items]
Investment Owned Description		Non-Exchange Traded Corporate Equity	[3],[4]	Non-Exchange Traded Corporate Equity	[7],[8],[9]
Fair Value		$ 2,478,000	[3],[4]	$ 770,000	[7],[8],[9]
Investment Owned, Balance, Shares		160	[3],[4]	56	[7],[8],[9]
Private Corporate Equity Investments [Member] | Non-Exchange Traded Corporate Equity [Member] | Technology [Member] | North America [Member]
Schedule of Investments [Line Items]
Investment Owned Description	[3],[4]	Non-Exchange Traded Corporate Equity
Fair Value	[3],[4]	$ 857,000
Investment Owned, Balance, Shares	[3],[4]	99
Private Corporate Equity Investments [Member] | Non-controlling Interest in Mortgage-related Private Partnership [Member] | Mortgage-related Commercial [Member] | North America [Member]
Schedule of Investments [Line Items]
Investment Owned Description		Non-Controlling Interest in Mortgage-Related Private Partnership	[3],[4]	Non-Controlling Interest in Mortgage-Related Private Partnership	[7],[8],[9]
Fair Value		$ 2,795,000	[3],[4]	$ 2,673,000	[7],[8],[9]
Private Corporate Equity Investments [Member] | Non-Exchange Traded Preferred Equity Investment in Mortgage Originators [Member] | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Investment Owned Description		Non-Exchange Traded Preferred Equity Investment in Mortgage Originators	[3],[4]	Non-Exchange Traded Preferred Equity Investment in Mortgage Originators	[7],[8],[9]
Fair Value		$ 4,325,000	[3],[4]	$ 2,500,000	[7],[8],[9]
Investment Owned, Balance, Shares		9,482	[3],[4]	7,657	[7],[8],[9]
Private Corporate Equity Investments [Member] | Non-Exchange Traded Equity Investment in Mortgage Originator | Mortgage-related Residential [Member] | North America [Member]
Schedule of Investments [Line Items]
Investment Owned Description		Non-Exchange Traded Equity Investment in Mortgage Originators	[3],[4]	Non-Exchange Traded Equity Investment in Mortgage Originators	[7],[8],[9]
Fair Value		$ 913,000	[3],[4]	$ 238,000	[7],[8],[9]
Investment Owned, Balance, Shares		7,478	[3],[4]	728	[7],[8],[9]
US Treasury Securities [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity	[6],[7],[8],[9]			0.21%
Fair Value	[7],[8],[9]			$ 1,636,000
Investment Owned, at Cost	[7],[8],[9]			1,550,000
US Treasury Securities [Member] | US Treasury Bond Securities [Member] | Government [Member] | North America [Member]
Schedule of Investments [Line Items]
Current Principal/Notional Amount	[7],[8],[9]			$ 1,560,000
Investment Owned Description	[7],[8],[9]			U.S. Treasury Bond
Rate	[7],[8],[9]			3.00%
Maturity	[7],[8],[9]			2044-11
Fair Value	[7],[8],[9]			$ 1,636,000
Long Investments [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		240.67%	[2],[3],[4]	275.46%	[6],[7],[8],[9]
Fair Value		$ 1,870,251,000	[3],[4]	$ 2,172,082,000	[7],[8],[9]
Investment Owned, at Cost		$ 1,844,920,000	[3],[4]	$ 2,122,326,000	[7],[8],[9]
Long Investments [Member] | Government National Mortgage Association [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		10.62%		9.33%
Long Investments [Member] | Federal National Mortgage Association [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		84.71%		100.30%
Long Investments [Member] | Federal Home Loan Mortgage Corporation [Member]
Schedule of Investments [Line Items]
Investment owned as a percentage of equity		52.58%		53.97%

[1] At June 30, 2015, the Company's long investments guaranteed by the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation, and the Government National Mortgage Association, represented 84.71%, 52.58%, and 10.62% of equity, respectively.

[2] Classification percentages are based on Total Equity.

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

[4] The table below shows the ratings on the Company's long investments from Moody's, Standard and Poor's, or Fitch, as well as the Company's long investments that were unrated but guaranteed by the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation, or the Government National Mortgage Association. Ratings tend to be a lagging credit indicator; as a result, the credit quality of the Company's long investment holdings may be lower than the credit quality implied based on the ratings listed below. In situations where an investment has a split rating, the lowest provided rating is used. The ratings descriptions include ratings qualified with a "+," "-," "1," "2," or "3."Rating Description Percent ofEquityUnrated but Agency-Guaranteed 147.91%A/A/A 0.35%Baa/BBB/BBB 2.23%Ba/BB/BB or below 53.46%Unrated 36.72%

[5] At December 31, 2014, the Company's long investments guaranteed by the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation, and the Government National Mortgage Association, represented 100.30%, 53.97%, and 9.33% of equity, respectively.

[6] Classification percentages are based on Total Equity.

[7] Conformed to current period presentation.

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

[9] The table below shows the Company's long investment ratings from Moody's, Standard and Poor's, or Fitch, as well as the Company's long investments that were unrated but guaranteed by the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation, or the Government National Mortgage Association. Ratings tend to be a lagging credit indicator; as a result, the credit quality of the Company's long investment holdings may be lower than the credit quality implied based on the ratings listed below. In situations where an investment has a split rating, the lowest provided rating is used. The ratings descriptions include ratings qualified with a "+," "-," "1," "2," or "3."Rating Description Percent of EquityUnrated but Agency-Guaranteed 163.60%A/A/A 0.98%Baa/BBB/BBB 5.62%Ba/BB/BB or below 80.65%Unrated 24.61%

[10] Private trust 100% backed by interest in Government National Mortgage Association collateralized mortgage obligation certificates.

[11] Private trust 100% backed by interest in Government National Mortgage Association collateralized mortgage obligation certificates.

[12] Loans and real estate owned are beneficially owned by the Company through participation certificates in the various trusts that hold such investments.

[13] Loans and real estate owned are beneficially owned by the Company through participation certificates in the various trusts that hold such investments.

[14] Includes investments in participation certificates in a trust owned by a related party of Ellington Financial Management LLC for which the Company has beneficial interests in the residual cash flows of the underlying loans held by the trust. At June 30, 2015 loans held in the related party trust for which the Company has beneficial interests in the residual cash flows, totaled $2.3 million.

[15] Includes non-performing commercial loans in the amount of $11.4 million whereby principal and/or interest is past due and a maturity date is not applicable.

[16] Includes non-performing commercial loans in the amount of $11.3 million whereby principal and/or interest is past due and a maturity date is not applicable.

[17] Number of properties not shown in thousands, represents actual number of properties owned.

[18] Number of properties not shown in thousands, represents actual number of properties owned.