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Consolidated Condensed Schedule Of Investments (Investments Sold Short) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended 12 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Investments Sold, Not yet Purchased [Line Items]    
Financial derivatives-liabilities, at fair value Net proceeds $ (33,950) $ (29,746)
Financial derivatives–liabilities, at fair value- (47,331) [1] (44,791) [1]
Investments sold short, at fair value- (1,221,894) (845,614)
Proceeds from investments sold short (1,223,043) (847,602)
Financial derivatives–assets, at fair value Net cost 45,074 50,533
Financial derivatives–assets, at fair value- 56,366 [1] 59,664 [1]
Investment Owned, at Cost 2,391,276 1,688,257
Fair Value 2,440,828 1,730,130
TBA - Fixed Rate Agency Securities Sold Short [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Investment Sold, Not yet Purchased, Percent of Equity (142.70%) [2],[3],[4],[5] (129.69%) [2],[3],[6],[7]
Current Principal/Notional Amount (1,101,218) (784,888)
Investments sold short, at fair value- (1,158,892) [3],[4],[5] (811,957) [3],[6],[7]
Proceeds from investments sold short (1,158,171) [3],[4],[5] (813,757) [3],[6],[7]
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 (248,558) [3],[4],[5]  
Description Federal National Mortgage Association (30 year) [3],[4],[5]  
Rate 4.00% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (261,957) [3],[4],[5]  
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 (192,422) [3],[4],[5]  
Description Federal National Mortgage Association (30 year) [3],[4],[5]  
Rate 3.50% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (196,669) [3],[4],[5]  
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 (119,830) [3],[4],[5]  
Description Federal National Mortgage Association (15 year) [3],[4],[5]  
Rate 3.50% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (126,046) [3],[4],[5]  
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 (115,217) [3],[4],[5]  
Description Federal Home Loan Mortgage Corporation (30 year) [3],[4],[5]  
Rate 4.00% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (121,293) [3],[4],[5]  
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 4.50% 2014-10 [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Current Principal/Notional Amount (84,730) [3],[4],[5]  
Description Federal National Mortgage Association (30 year) [3],[4],[5]  
Rate 4.50% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (91,429) [3],[4],[5]  
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 (62,750) [3],[4],[5]  
Description Federal National Mortgage Association (30 year) [3],[4],[5]  
Rate 5.00% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (69,263) [3],[4],[5]  
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 (61,110) [3],[4],[5]  
Description Federal National Mortgage Association (15 year) [3],[4],[5]  
Rate 3.00% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (62,943) [3],[4],[5]  
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 (38,900) [3],[4],[5]  
Description Federal National Mortgage Association (15 year) [3],[4],[5]  
Rate 2.50% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (39,119) [3],[4],[5]  
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 (29,700) [3],[4],[5]  
Description Federal Home Loan Mortgage Corporation (15 year) [3],[4],[5]  
Rate 3.50% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (31,180) [3],[4],[5]  
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 4.00% 2014-11 [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Current Principal/Notional Amount (29,300) [3],[4],[5]  
Description Federal National Mortgage Association (30 year) [3],[4],[5]  
Rate 4.00% [3],[4],[5]  
Investments maturity date 2014-11 [3],[4],[5]  
Investments sold short, at fair value- (30,788) [3],[4],[5]  
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal National Mortgage Association (30 Year) 5.00% 2014-12 [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Current Principal/Notional Amount (27,300) [3],[4],[5]  
Description Federal National Mortgage Association (30 year) [3],[4],[5]  
Rate 5.00% [3],[4],[5]  
Investments maturity date 2014-12 [3],[4],[5]  
Investments sold short, at fair value- (30,014) [3],[4],[5]  
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 (17,500) [3],[4],[5]  
Description Federal National Mortgage Association (30 year) [3],[4],[5]  
Rate 4.50% [3],[4],[5]  
Investments maturity date 2014-11 [3],[4],[5]  
Investments sold short, at fair value- (18,837) [3],[4],[5]  
TBA - Fixed Rate Agency Securities Sold Short [Member] | Federal Home Loan Mortgage Corporation (30 Year) 4.50% 2014-11 [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Current Principal/Notional Amount (17,300) [3],[4],[5]  
Description Federal Home Loan Mortgage Corporation (30 year) [3],[4],[5]  
Rate 4.50% [3],[4],[5]  
Investments maturity date 2014-11 [3],[4],[5]  
Investments sold short, at fair value- (18,616) [3],[4],[5]  
TBA - Fixed Rate Agency Securities Sold Short [Member] | Government National Mortgage Association (30 Year) 4.00% [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Current Principal/Notional Amount (14,900) [3],[4],[5]  
Description Government National Mortgage Association (30 year) [3],[4],[5]  
Rate 4.00% [3],[4],[5]  
Investments maturity date 2014-11 [3],[4],[5]  
Investments sold short, at fair value- (15,768) [3],[4],[5]  
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 (12,631) [3],[4],[5]  
Description Federal Home Loan Mortgage Corporation (30 year) [3],[4],[5]  
Rate 4.50% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (13,625) [3],[4],[5]  
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 (9,870) [3],[4],[5]  
Description Federal National Mortgage Association (15 year) [3],[4],[5]  
Rate 4.00% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (10,447) [3],[4],[5]  
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 (6,700) [3],[4],[5]  
Description Federal National Mortgage Association (30 year) [3],[4],[5]  
Rate 5.50% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (7,464) [3],[4],[5]  
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) [3],[4],[5] (23,200) [3],[6],[7]
Description Federal Home Loan Mortgage Corporation (30 year) [3],[4],[5] Federal Home Loan Mortgage Corporation (30 year) [3],[6],[7]
Rate 5.00% [3],[4],[5] 5.00% [3],[6],[7]
Investments maturity date 2014-10 [3],[4],[5] 2014-02 [3],[6],[7]
Investments sold short, at fair value- (6,612) [3],[4],[5] (24,996) [3],[6],[7]
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) [3],[4],[5]  
Description Federal Home Loan Mortgage Corporation (15 year) [3],[4],[5]  
Rate 3.00% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (4,216) [3],[4],[5]  
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) [3],[4],[5]  
Description Other Federal Home Loan Mortgage Corporation (30 year)  
Rate 5.50% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (1,444) [3],[4],[5]  
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) [3],[4],[5]  
Description Other Federal Home Loan Mortgage Corporation (15 year) [3],[4],[5]  
Rate 4.00% [3],[4],[5]  
Investments maturity date 2014-10 [3],[4],[5]  
Investments sold short, at fair value- (1,162) [3],[4],[5]  
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) [3],[6],[7]
Description   Federal National Mortgage Association (30 year) [3],[6],[7]
Rate   4.00% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (161,689) [3],[6],[7]
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) [3],[6],[7]
Description   Federal National Mortgage Association (30 year) [3],[6],[7]
Rate   3.50% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (135,427) [3],[6],[7]
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) [3],[6],[7]
Description   Federal National Mortgage Association (30 year) [3],[6],[7]
Rate   4.50% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (102,559) [3],[6],[7]
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) [3],[6],[7]
Description   Federal National Mortgage Association (15 year) [3],[6],[7]
Rate   3.50% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (93,716) [3],[6],[7]
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) [3],[6],[7]
Description   Federal National Mortgage Association (30 year) [3],[6],[7]
Rate   5.00% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (62,617) [3],[6],[7]
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) [3],[6],[7]
Description   Federal National Mortgage Association (15 year) [3],[6],[7]
Rate   3.00% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (60,158) [3],[6],[7]
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) [3],[6],[7]
Description   Federal Home Loan Mortgage Corporation (30 year) [3],[6],[7]
Rate   4.00% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (59,409) [3],[6],[7]
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) [3],[6],[7]
Description   Federal National Mortgage Association (15 year) [3],[6],[7]
Rate   2.50% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (30,816) [3],[6],[7]
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) [3],[6],[7]
Description   Federal National Mortgage Association (30 year) [3],[6],[7]
Rate   4.50% [3],[6],[7]
Investments maturity date   2014-02 [3],[6],[7]
Investments sold short, at fair value-   (25,798) [3],[6],[7]
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) [3],[6],[7]
Description   Federal National Mortgage Association (15 year) [3],[6],[7]
Rate   4.00% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (17,589) [3],[6],[7]
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) [3],[6],[7]
Description   Federal Home Loan Mortgage Corporation (15 year) [3],[6],[7]
Rate   3.50% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (8,550) [3],[6],[7]
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) [3],[6],[7]
Description   Federal National Mortgage Association (30 year) [3],[6],[7]
Rate   5.50% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (7,373) [3],[6],[7]
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) [3],[6],[7]
Description   Federal Home Loan Mortgage Corporation (30 year) [3],[6],[7]
Rate   3.50% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (6,495) [3],[6],[7]
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) [3],[6],[7]
Description   Federal Home Loan Mortgage Corporation (15 year) [3],[6],[7]
Rate   3.00% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (4,175) [3],[6],[7]
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) [3],[6],[7]
Description   Federal Home Loan Mortgage Corporation (30 year) [3],[6],[7]
Rate   4.50% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (4,129) [3],[6],[7]
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) [3],[6],[7]
Description   Other Federal National Mortgage Association (30 Year) [3],[6],[7]
Rate   6.00% [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (2,776) [3],[6],[7]
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) [3],[6],[7]
Description   Other Federal Home Loan Mortgage Corporation (30 Year) [3],[6],[7]
Investments maturity date   2014-01 [3],[6],[7]
Investments sold short, at fair value-   (3,685) [3],[6],[7]
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 (116.36%) (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 (24.40%) (17.80%)
TBA - Fixed Rate Agency Securities Sold Short [Member] | Government National Mortgage Association [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Investment Sold, Not yet Purchased, Percent of Equity (1.94%)  
Government debt sold short [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Investment Sold, Not yet Purchased, Percent of Equity (5.38%) [2],[3],[4] (4.36%) [2],[3],[6]
Investments sold short, at fair value- (43,646) [3],[4] (27,288) [3],[6]
Proceeds from investments sold short (44,034) [3],[4] (27,532) [3],[6]
Government debt sold short [Member] | US Treasury Bond Securities [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Current Principal/Notional Amount (8) [3],[4]  
Description U.S. Treasury Bond [3],[4]  
Rate 3.13% [3],[4]  
Investments maturity date 2044-08 [3],[4]  
Investments sold short, at fair value- (7,550) [3],[4]  
Government debt sold short [Member] | Sovereign Debt Securities [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Current Principal/Notional Amount (21,367) [3],[4] (7,337) [3],[6]
Description European Sovereign Bonds [3],[4] European Sovereign Bond [3],[6]
Rate   3.75% [3],[6]
Investments maturity date   2018-10 [3],[6]
Investments sold short, at fair value- (23,707) [3],[4] (7,681) [3],[6]
Government debt sold short [Member] | US Treasury Notes Securities [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Current Principal/Notional Amount (12,500) [3],[4] (20,000) [3],[6]
Description U.S. Treasury Note [3],[4] U.S. Treasury Note [3],[6]
Rate   1.25% [3],[6]
Investments maturity date   2018-10 [3],[6]
Investments sold short, at fair value- (12,389) [3],[4] (19,607) [3],[6]
Common Stock Sold Short [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Investment Sold, Not yet Purchased, Percent of Equity (2.38%) [2],[3],[4] (1.02%) [2],[3],[6]
Investments sold short, at fair value- (19,356) [3],[4] (6,369) [3],[6]
Proceeds from investments sold short (20,838) [3],[4] (6,313) [3],[6]
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 [3],[4] Publicly Traded Real Estate Investment Trusts [3],[6]
Investments sold short, at fair value- (19,356) [3],[4] (6,369) [3],[6]
Investment Sold, Not yet Purchased, Balance, Shares (2,113) [3],[4] (763) [3],[6]
Securities Sold Short - Securities Sold, Not Yet Purchased [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Investment Sold, Not yet Purchased, Percent of Equity (150.46%) [2],[3],[4] (135.07%) [2],[3],[6]
Investments sold short, at fair value- (1,221,894) [3],[4] (845,614) [3],[6]
Proceeds from investments sold short (1,223,043) [3],[4] (847,602) [3],[6]
Minimum [Member] | 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]    
Rate   2.50% [3],[6],[7]
Minimum [Member] | Government debt sold short [Member] | Sovereign Debt Securities [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Rate 2.75% [3],[4]  
Investments maturity date 2018-10 [3],[4]  
Minimum [Member] | Government debt sold short [Member] | US Treasury Notes Securities [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Rate 1.25% [3],[4]  
Investments maturity date 2018-10 [3],[4]  
Maximum [Member] | 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]    
Rate   5.50% [3],[6],[7]
Maximum [Member] | Government debt sold short [Member] | Sovereign Debt Securities [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Rate 3.75% [3],[4]  
Investments maturity date 2019-04 [3],[4]  
Maximum [Member] | Government debt sold short [Member] | US Treasury Notes Securities [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Rate 1.63% [3],[4]  
Investments maturity date 2019-08 [3],[4]  
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 (2.92%)  
Current Principal/Notional Amount (21,367)  
Investments sold short, at fair value- (23,707)  
Proceeds from investments sold short (24,110)  
North America [Member] | Common Stock Sold Short [Member]
    
Investments Sold, Not yet Purchased [Line Items]    
Investment Sold, Not yet Purchased, Percent of Equity (2.38%) (1.02%)
Investments sold short, at fair value- (19,356) (6,369)
Investment Sold, Not yet Purchased, Balance, Shares (2,113) (763)
Proceeds from investments sold short (20,838) (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 (145.16%)  
Current Principal/Notional Amount (1,121,387)  
Investments sold short, at fair value- (1,178,831)  
Proceeds from investments sold short $ (1,178,095)  
[1] In the Company's Consolidated Statement of Assets, Liabilities, and Equity, all balances associated with repurchase agreements, reverse repurchase agreements, and financial derivatives are presented on a gross basis.
[2] Classification percentages are based on Total Equity.
[3] See Note 2 and Note 3 in Notes to Consolidated Financial Statements.
[4] 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 3,161,385 $2,342,001 $2,393,715 294.75 %Europe 43,235 41,351 39,427 4.85 %North America (Common Stock) 13,225 7,924 7,686 0.95 %Total $2,391,276 $2,440,828 300.56 %Investments Sold Short: North America (TBAs and Government Debt) (1,121,387) $(1,178,095) $(1,178,831) (145.16)%Europe (Government Debt) (21,367) (24,110) (23,707) (2.92)%North America (Common Stock) (2,113) (20,838) (19,356) (2.38)%Total $(1,223,043) $(1,221,894) (150.46)%Repurchase Agreements: North America 20,046 $20,045 $20,045 2.47 %Europe 26,994 27,147 26,994 3.32 %Total 47,040 $47,192 $47,039 5.79 %Financial Derivatives–Assets: North America 634,538 $45,074 $56,365 6.94 %Europe (8,733) — 1 — %Total 625,805 $45,074 $56,366 6.94 %Financial Derivatives–Liabilities: North America (617,900) $(32,133) $(45,569) (5.61)%Europe (16,675) (1,817) (1,762) (0.22)%Total (634,575) $(33,950) $(47,331) (5.83)%
[5] At September 30, 2014, the Company's short investments guaranteed by the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation, and the Government National Mortgage Association, represented 116.36%, 24.40%, and 1.94% of equity, respectively.
[6] 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 %
[7] 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.