Consolidated Condensed Schedule Of Investments (Investments Sold Short) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Investments Sold, Not yet Purchased [Line Items]
Investments sold short, at fair value-	$ (1,291,370)		$ (845,614)
Proceeds from investments sold short	(1,290,091)		(847,602)
TBA - Fixed Rate Agency Securities Sold Short [Member]
Investments Sold, Not yet Purchased [Line Items]
Investment Sold, Not yet Purchased, Percent of Equity	(153.39%)	[1],[2],[3],[4]	(129.69%)	[1],[2],[5],[6]
Current Principal/Notional Amount	(1,135,218)		(784,888)
Investments sold short, at fair value-	(1,209,539)	[1],[3],[4]	(811,957)	[1],[5],[6]
Proceeds from investments sold short	(1,205,876)	[1],[3],[4]	(813,757)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 4.00% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(213,928)	[1],[3],[4]
Description	Federal National Mortgage Association (30 year)	[1],[3],[4]
Rate	4.00%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(228,376)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 3.50% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(205,082)	[1],[3],[4]
Description	Federal National Mortgage Association (30 year)	[1],[3],[4]
Rate	3.50%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(213,870)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 Year) 3.50% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(146,580)	[1],[3],[4]
Description	Federal National Mortgage Association (15 year)	[1],[3],[4]
Rate	3.50%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(154,837)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 Year) 4.00% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(123,117)	[1],[3],[4]
Description	Federal Home Loan Mortgage Corporation (30 year)	[1],[3],[4]
Rate	4.00%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(131,254)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 4.50% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(92,080)	[1],[3],[4]
Description	Federal National Mortgage Association (30 year)	[1],[3],[4]
Rate	4.50%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(99,968)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 5.00% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(54,100)	[1],[3],[4]
Description	Federal National Mortgage Association (30 year)	[1],[3],[4]
Rate	5.00%	[1],[3],[4]
Investments maturity date	2015-02	[1],[3],[4]
Investments sold short, at fair value-	(59,698)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 5.00% 2015-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(48,150)	[1],[3],[4]
Description	Federal National Mortgage Association (30 year)	[1],[3],[4]
Rate	5.00%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(53,193)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 4.50% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(48,800)	[1],[3],[4]
Description	Federal National Mortgage Association (30 year)	[1],[3],[4]
Rate	4.50%	[1],[3],[4]
Investments maturity date	2015-02	[1],[3],[4]
Investments sold short, at fair value-	(52,889)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 Year) 3.00% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(38,360)	[1],[3],[4]
Description	Federal National Mortgage Association (15 year)	[1],[3],[4]
Rate	3.00%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(39,870)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 Year) 4.50% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(36,081)	[1],[3],[4]
Description	Federal Home Loan Mortgage Corporation (30 year)	[1],[3],[4]
Rate	4.50%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(39,111)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 Year) 4.00% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(26,400)	[1],[3],[4]
Description	Federal Home Loan Mortgage Corporation (30 year)	[1],[3],[4]
Rate	4.00%	[1],[3],[4]
Investments maturity date	2015-02	[1],[3],[4]
Investments sold short, at fair value-	(28,071)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 4.00% 2015-02 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(21,840)	[1],[3],[4]
Description	Federal National Mortgage Association (30 year)	[1],[3],[4]
Rate	4.00%	[1],[3],[4]
Investments maturity date	2015-02	[1],[3],[4]
Investments sold short, at fair value-	(23,255)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (15 Year) 3.50% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(20,300)	[1],[3],[4]
Description	Federal Home Loan Mortgage Corporation (15 year)	[1],[3],[4]
Rate	3.50%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(21,429)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 Year) 2.50% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(15,850)	[1],[3],[4]
Description	Federal National Mortgage Association (15 year)	[1],[3],[4]
Rate	2.50%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(16,140)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 Year) 3.50% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(14,020)	[1],[3],[4]
Description	Federal Home Loan Mortgage Corporation (30 year)	[1],[3],[4]
Rate	3.50%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(14,579)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 Year) 4.00% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(7,900)	[1],[3],[4]
Description	Federal National Mortgage Association (15 year)	[1],[3],[4]
Rate	4.00%	[1],[3],[4]
Investments maturity date	2015-02	[1],[3],[4]
Investments sold short, at fair value-	(8,365)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 5.50% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(6,860)	[1],[3],[4]
Description	Federal National Mortgage Association (30 year)	[1],[3],[4]
Rate	5.50%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(7,673)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 year) 5.00% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(6,000)	[1],[3],[4]	(23,200)	[1],[5],[6]
Description	Federal Home Loan Mortgage Corporation (30 year)	[1],[3],[4]	Federal Home Loan Mortgage Corporation (30 year)	[1],[5],[6]
Rate	5.00%	[1],[3],[4]	5.00%	[1],[5],[6]
Investments maturity date	2015-01	[1],[3],[4]	2014-02	[1],[5],[6]
Investments sold short, at fair value-	(6,622)	[1],[3],[4]	(24,996)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (15 Year) 3.00% [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(4,100)	[1],[3],[4]
Description	Federal Home Loan Mortgage Corporation (15 year)	[1],[3],[4]
Rate	3.00%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(4,256)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Other Federal National Mortgage Association (15 Year) [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(3,270)	[1],[3],[4]
Description	Other Federal National Mortgage Association (15 year)	[1],[3],[4]
Rate	4.00%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(3,465)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Other Federal Home Loan Mortgage Corporation (30 Year) [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(1,300)	[1],[3],[4]
Description	Other Federal Home Loan Mortgage Corporation (30 year)
Rate	5.50%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(1,453)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Other Federal Home Loan Mortgage Corporation (15 Year) [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(1,100)	[1],[3],[4]
Description	Other Federal Home Loan Mortgage Corporation (15 year)	[1],[3],[4]
Rate	4.00%	[1],[3],[4]
Investments maturity date	2015-01	[1],[3],[4]
Investments sold short, at fair value-	(1,165)	[1],[3],[4]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 year) 4.00% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(156,890)	[1],[5],[6]
Description			Federal National Mortgage Association (30 year)	[1],[5],[6]
Rate			4.00%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(161,689)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 year) 3.50% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(136,182)	[1],[5],[6]
Description			Federal National Mortgage Association (30 year)	[1],[5],[6]
Rate			3.50%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(135,427)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 year) 4.50% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(96,700)	[1],[5],[6]
Description			Federal National Mortgage Association (30 year)	[1],[5],[6]
Rate			4.50%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(102,559)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 year) 3.50% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(89,600)	[1],[5],[6]
Description			Federal National Mortgage Association (15 year)	[1],[5],[6]
Rate			3.50%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(93,716)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 year) 5.00% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(57,600)	[1],[5],[6]
Description			Federal National Mortgage Association (30 year)	[1],[5],[6]
Rate			5.00%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(62,617)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 year) 3.00% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(58,960)	[1],[5],[6]
Description			Federal National Mortgage Association (15 year)	[1],[5],[6]
Rate			3.00%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(60,158)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 year) 4.00% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(57,837)	[1],[5],[6]
Description			Federal Home Loan Mortgage Corporation (30 year)	[1],[5],[6]
Rate			4.00%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(59,409)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 year) 2.50% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(31,150)	[1],[5],[6]
Description			Federal National Mortgage Association (15 year)	[1],[5],[6]
Rate			2.50%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(30,816)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 year) 4.50% 2014-02 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(24,400)	[1],[5],[6]
Description			Federal National Mortgage Association (30 year)	[1],[5],[6]
Rate			4.50%	[1],[5],[6]
Investments maturity date			2014-02	[1],[5],[6]
Investments sold short, at fair value-			(25,798)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (15 year) 4.00% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(16,604)	[1],[5],[6]
Description			Federal National Mortgage Association (15 year)	[1],[5],[6]
Rate			4.00%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(17,589)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (15 year) 3.50% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(8,200)	[1],[5],[6]
Description			Federal Home Loan Mortgage Corporation (15 year)	[1],[5],[6]
Rate			3.50%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(8,550)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 year) 5.50% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(6,700)	[1],[5],[6]
Description			Federal National Mortgage Association (30 year)	[1],[5],[6]
Rate			5.50%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(7,373)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 year) 3.50% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(6,550)	[1],[5],[6]
Description			Federal Home Loan Mortgage Corporation (30 year)	[1],[5],[6]
Rate			3.50%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(6,495)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (15 year) 3.00% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(4,100)	[1],[5],[6]
Description			Federal Home Loan Mortgage Corporation (15 year)	[1],[5],[6]
Rate			3.00%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(4,175)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 year) 4.50% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(3,900)	[1],[5],[6]
Description			Federal Home Loan Mortgage Corporation (30 year)	[1],[5],[6]
Rate			4.50%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(4,129)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Other Federal National Mortgage Association (30 year) 6.00% 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(2,500)	[1],[5],[6]
Description			Other Federal National Mortgage Association (30 Year)	[1],[5],[6]
Rate			6.00%	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(2,776)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Other Federal Home Loan Mortgage Corporation (30 year) 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount			(3,815)	[1],[5],[6]
Description			Other Federal Home Loan Mortgage Corporation (30 Year)	[1],[5],[6]
Investments maturity date			2014-01	[1],[5],[6]
Investments sold short, at fair value-			(3,685)	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association [Member]
Investments Sold, Not yet Purchased [Line Items]
Investment Sold, Not yet Purchased, Percent of Equity	(121.95%)		(111.89%)
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation [Member]
Investments Sold, Not yet Purchased [Line Items]
Investment Sold, Not yet Purchased, Percent of Equity	(31.44%)		(17.80%)
TBA - Fixed Rate Agency Securities Sold Short [Member] | Minimum [Member] | Other Federal Home Loan Mortgage Corporation (30 year) 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Rate			2.50%	[1],[5],[6]
TBA - Fixed Rate Agency Securities Sold Short [Member] | Maximum [Member] | Other Federal Home Loan Mortgage Corporation (30 year) 2014-01 [Member]
Investments Sold, Not yet Purchased [Line Items]
Rate			5.50%	[1],[5],[6]
Government debt sold short [Member]
Investments Sold, Not yet Purchased [Line Items]
Investment Sold, Not yet Purchased, Percent of Equity	(7.02%)	[1],[2],[3]	(4.36%)	[1],[2],[5]
Investments sold short, at fair value-	(55,315)	[1],[3]	(27,288)	[1],[5]
Proceeds from investments sold short	(56,610)	[1],[3]	(27,532)	[1],[5]
Government debt sold short [Member] | Sovereign Debt Securities [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(28,118)	[1],[3]	(7,337)	[1],[5]
Description	European Sovereign Bonds	[1],[3]	European Sovereign Bond	[1],[5]
Rate			3.75%	[1],[5]
Investments maturity date			2018-10	[1],[5]
Investments sold short, at fair value-	(30,606)	[1],[3]	(7,681)	[1],[5]
Government debt sold short [Member] | US Treasury Notes Securities [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(22,485)	[1],[3]	(20,000)	[1],[5]
Description	U.S. Treasury Note	[1],[3]	U.S. Treasury Note	[1],[5]
Rate			1.25%	[1],[5]
Investments maturity date			2018-10	[1],[5]
Investments sold short, at fair value-	(22,560)	[1],[3]	(19,607)	[1],[5]
Government debt sold short [Member] | US Treasury Bond [Member]
Investments Sold, Not yet Purchased [Line Items]
Current Principal/Notional Amount	(2,000)	[1],[3]
Description	U.S. Treasury Bond	[1],[3]
Rate	3.13%	[1],[3]
Investments maturity date	2044-08	[1],[3]
Investments sold short, at fair value-	(2,149)	[1],[3]
Government debt sold short [Member] | Minimum [Member] | Sovereign Debt Securities [Member]
Investments Sold, Not yet Purchased [Line Items]
Rate	2.75%	[1],[3]
Investments maturity date	2016-09	[1],[3]
Government debt sold short [Member] | Minimum [Member] | US Treasury Notes Securities [Member]
Investments Sold, Not yet Purchased [Line Items]
Rate	1.25%	[1],[3]
Investments maturity date	2018-10	[1],[3]
Government debt sold short [Member] | Maximum [Member] | Sovereign Debt Securities [Member]
Investments Sold, Not yet Purchased [Line Items]
Rate	4.00%	[1],[3]
Investments maturity date	2019-04	[1],[3]
Government debt sold short [Member] | Maximum [Member] | US Treasury Notes Securities [Member]
Investments Sold, Not yet Purchased [Line Items]
Rate	2.25%	[1],[3]
Investments maturity date	2024-11	[1],[3]
Common Stock Sold Short [Member]
Investments Sold, Not yet Purchased [Line Items]
Investment Sold, Not yet Purchased, Percent of Equity	(3.36%)	[1],[2],[3]	(1.02%)	[1],[2],[5]
Investments sold short, at fair value-	(26,516)	[1],[3]	(6,369)	[1],[5]
Proceeds from investments sold short	(27,605)	[1],[3]	(6,313)	[1],[5]
Common Stock Sold Short [Member] | Publicly Traded Real Estate Investment Trusts [Member]
Investments Sold, Not yet Purchased [Line Items]
Description	Publicly Traded Real Estate Investment Trusts	[1],[3]	Publicly Traded Real Estate Investment Trusts	[1],[5]
Investments sold short, at fair value-	(26,516)	[1],[3]	(6,369)	[1],[5]
Investment Sold, Not yet Purchased, Balance, Shares	(2,986)	[1],[3]	(763)	[1],[5]
Securities Sold Short - Securities Sold, Not Yet Purchased [Member]
Investments Sold, Not yet Purchased [Line Items]
Investment Sold, Not yet Purchased, Percent of Equity	(163.77%)	[1],[2],[3]	(135.07%)	[1],[2],[5]
Investments sold short, at fair value-	(1,291,370)	[1],[3]	(845,614)	[1],[5]
Proceeds from investments sold short	(1,290,091)	[1],[3]	(847,602)	[1],[5]
Europe [Member] | Securities Sold Short - Securities Sold, Not Yet Purchased [Member]
Investments Sold, Not yet Purchased [Line Items]
Investment Sold, Not yet Purchased, Percent of Equity			(1.23%)
Current Principal/Notional Amount			(7,337)
Investments sold short, at fair value-			(7,681)
Proceeds from investments sold short			(7,633)
Europe [Member] | Sovereign Debt Securities [Member]
Investments Sold, Not yet Purchased [Line Items]
Investment Sold, Not yet Purchased, Percent of Equity	(3.88%)
Current Principal/Notional Amount	(28,118)
Investments sold short, at fair value-	(30,606)
Proceeds from investments sold short	(32,008)
North America [Member] | Common Stock Sold Short [Member]
Investments Sold, Not yet Purchased [Line Items]
Investment Sold, Not yet Purchased, Percent of Equity	(3.36%)		(1.02%)
Investments sold short, at fair value-	(26,516)		(6,369)
Investment Sold, Not yet Purchased, Balance, Shares	(2,986)		(763)
Proceeds from investments sold short	(27,605)		(6,313)
North America [Member] | Securities Sold Short - Securities Sold, Not Yet Purchased [Member]
Investments Sold, Not yet Purchased [Line Items]
Investment Sold, Not yet Purchased, Percent of Equity			(132.82%)
Current Principal/Notional Amount			(804,888)
Investments sold short, at fair value-			(831,564)
Proceeds from investments sold short			(833,656)
North America [Member] | Securities Sold Short Securities Sold Not Yet Purchased TBAs and Government Debt [Member]
Investments Sold, Not yet Purchased [Line Items]
Investment Sold, Not yet Purchased, Percent of Equity	(156.53%)
Current Principal/Notional Amount	(1,159,703)
Investments sold short, at fair value-	(1,234,248)
Proceeds from investments sold short	$ (1,230,478)

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

[2] Classification percentages are based on Total Equity.

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

[4] At December 31, 2014, the Company's short investments guaranteed by the Federal National Mortgage Association and the Federal Home Loan Mortgage Corporation, represented 121.95% and 31.44% of equity, respectively.

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

[6] At December 31, 2013, the Company's short investments guaranteed by the Federal National Mortgage Association and the Federal Home Loan Mortgage Corporation represented 111.89% and 17.80% of equity, respectively.