Offsetting of Assets and Liabilities (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
Offsetting of Assets and Liabilities [Line Items]
Financial derivatives–assets, at fair value-	$ 56,366,000	[1]	$ 59,664,000	[1]
Fair value repurchase agreements	47,039,000	[1]	27,962,000	[1]
Financial derivatives–liabilities, at fair value-	(47,331,000)	[1]	(44,791,000)	[1]
Reverse Repurchase Agreements	(1,395,132,000)	[1]	(1,236,166,000)	[1]
Derivative Liability Instruments available for offset	(22,108,000)		(24,162,000)
Reverse Repurchase Agreements Available for Offset	(47,039,000)		(27,962,000)
Derivative Asset Instruments available for offset	22,108,000		24,162,000
Repurchase Agreements Available for Offset	47,039,000		27,962,000
Repurchase Agreements and Related Collateral Net	0		0
Reverse Repurchase Agreements and Related Collateral Net	0		0
Securities Collateral realting to Repurchase and Reverse Repurchase Agreements	1,580,000,000		1,480,000,000
Financial Derivatives - Assets [Member]
Offsetting of Assets and Liabilities [Line Items]
Financial derivatives–assets, at fair value-	56,366,000	[2],[3]	59,664,000	[2],[4]
Financial Instruments Pledged as Collateral	0	[5],[6]	0	[5],[6]
Cash Collateral (Received) Pledged	(11,773,000)	[5],[6]	(17,273,000)	[5],[6]
Derivatives and Related Collateral Net	22,484,000		18,229,000
Excess cash collateral	24,400,000		3,200,000
Securities Purchased under Agreements to Resell [Member]
Offsetting of Assets and Liabilities [Line Items]
Financial Instruments Pledged as Collateral	0	[5],[6]	0	[5],[6]
Cash Collateral (Received) Pledged	0	[5],[6]	0	[5],[6]
Reverse Repurchase Agreements [Member]
Offsetting of Assets and Liabilities [Line Items]
Financial Instruments Pledged as Collateral	1,333,817,000	[5],[6]	1,205,278,000	[5],[6]
Cash Collateral (Received) Pledged	14,276,000	[5],[6]	2,926,000	[5],[6]
Financial Derivatives - Liabilities [Member]
Offsetting of Assets and Liabilities [Line Items]
Financial derivatives–liabilities, at fair value-	(47,331,000)	[2],[3]	(44,791,000)	[2],[4]
Financial Instruments Pledged as Collateral	0	[5],[6]	0	[5],[6]
Cash Collateral (Received) Pledged	25,223,000	[5],[6]	20,629,000	[5],[6]
Derivatives and Related Collateral Net	0		0
Excess cash collateral	$ 27,700,000		$ 36,400,000

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

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

[3] The following table details the breakout by geographical region of long investments, investments sold short, repurchase agreements, financial derivatives–assets, and financial derivatives–liabilities.Region Current Principal/Notional Value/Number of Properties/Number of Shares Cost/(Proceeds) Fair Value Percent ofEquityLong Investments: (In thousands, Expressed in U.S. Dollars) North America 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)%

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

[5] For the purpose of this presentation, for each row the total amount of financial instruments transferred or pledged and cash collateral (received) or pledged may not exceed the applicable gross amount of assets or (liabilities) as presented here. Therefore, we have reduced the amount of financial instruments transferred or pledged as collateral related to our reverse repurchase agreements and cash collateral pledged on our financial derivative liabilities. Total financial instruments transferred or pledged as collateral on our reverse repurchase agreements as of September 30, 2014 and December 31, 2013 were $1.58 billion and $1.48 billion, respectively. As of September 30, 2014 and December 31, 2013, total cash collateral on financial derivative assets excludes excess net cash collateral pledged of $24.4 million and $3.2 million, respectively. As of September 30, 2014 and December 31, 2013, total cash collateral on financial derivative liabilities excludes excess cash collateral pledged of $27.7 million and $36.4 million, respectively.

[6] When collateral is pledged to or pledged by a counterparty, it is often pledged or posted with respect to all positions with such counterparty, and in such cases such collateral cannot be specifically identified as relating to a specific asset or liability. As a result, in preparing the above tables, the Company has made assumptions in allocating pledged or posted collateral among the various rows.