Repurchase Agreements (Details 3) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Alpine Securitization Corporation/Credit Suisse
Repurchase agreements counterparty risk
Amount at Risk	$ 830,183	[1],[2]
Weighted Average Months to Maturity for Repurchase Agreements	1 month	[2]
Counterparty risk as Percent of Stockholders' Equity, minimum	25.40%	[2]
Alpine Securitization Corporation
Repurchase agreements counterparty risk
Amount at Risk	755,300
Credit Suisse Securities USA LLC
Repurchase agreements counterparty risk
Amount at Risk	74,900
Wells Fargo
Repurchase agreements counterparty risk
Amount at Risk	339,760	[1],[3]
Weighted Average Months to Maturity for Repurchase Agreements	5 months	[3]
Counterparty risk as Percent of Stockholders' Equity, minimum	10.40%	[3]
Wells Fargo Bank
Repurchase agreements counterparty risk
Amount at Risk	200,600
Wells Fargo Securities LLC
Repurchase agreements counterparty risk
Amount at Risk	139,200
RBS
Repurchase agreements counterparty risk
Amount at Risk	262,141	[1]
Weighted Average Months to Maturity for Repurchase Agreements	2 months
Counterparty risk as Percent of Stockholders' Equity, minimum	8.00%
UBS
Repurchase agreements counterparty risk
Amount at Risk	$ 232,202	[1],[4]
Weighted Average Months to Maturity for Repurchase Agreements	19 months	[4]
Counterparty risk as Percent of Stockholders' Equity, minimum	7.10%	[4]

[1] The amount at risk reflects the difference between (a) the amount loaned to the Company through repurchase agreements and repurchase agreements underlying Linked Transactions, including interest payable, and (b) the cash and the fair value of the securities pledged by the Company as collateral and MBS underlying Linked Transactions, including accrued interest receivable on such securities.

[2] Includes $755.3 million at risk with Alpine Securitization Corporation and $74.9 million at risk with Credit Suisse Securities (USA) LLC. Alpine Securitization Corporation is a special purpose funding vehicle that is a consolidated affiliate of Credit Suisse Group. Counterparty rating shown is the asset backed short term rating for Alpine Securitization Corporation.

[3] Includes $200.6 million at risk with Wells Fargo Bank, NA and $139.2 million at risk with Wells Fargo Securities LLC.

[4] Includes Non-Agency MBS pledged as collateral with contemporaneous repurchase and reverse repurchase agreements.