Use of Special Purpose Entities and Variable Interest Entities (Details) (USD $)	3 Months Ended					1 Months Ended
	Jun. 30, 2014		Dec. 31, 2013		Jun. 30, 2014 Prepaid and other assets	Feb. 29, 2012 WFMLT Series 2012-RR1		Feb. 29, 2012 WFMLT Series 2012-RR1 Senior-support certificates		Jun. 30, 2011 CSMC Series 2011-7R		Jun. 30, 2011 CSMC Series 2011-7R Senior-support certificates		Feb. 28, 2011 CSMC Series 2011-1R		Feb. 28, 2011 CSMC Series 2011-1R Senior-support certificates		Oct. 31, 2010 Deutsche Mortgage Securities, Inc. Real Estate Mortgage Investment Conduit Trust, Series 2010-RS2		Oct. 31, 2010 Deutsche Mortgage Securities, Inc. Real Estate Mortgage Investment Conduit Trust, Series 2010-RS2 Senior-support certificates		Jun. 30, 2014 Trust, ownership in residential whole loans
Special purpose entities and variable interest entities
Principal value of Non-Agency MBS sold						$ 433,347,000				$ 1,283,422,000				$ 1,319,969,000				$ 985,228,000
Face amount of Bonds issued by the VIE and purchased by 3rd party investors						186,691,000	[1]			474,866,000	[1]			488,389,000	[1]			373,577,000	[1]
Outstanding amount of Senior Bonds	214,048,000	[2]	366,205,000	[2]		76,597,000				5,503,000				50,159,000				81,789,000
Pass-through rate for Senior Bonds issued (as a percent)						2.85%
Pass-through rate for Senior Bonds issued										One-month LIBOR				One-month LIBOR				Weighted Average Coupon Rate
Interest rate added to base rate (as a percent)										1.25%				1.00%
Face amount of Senior Support Certificates received by the Company								220,524,000	[3]			762,810,000	[3]			781,744,000	[3]			487,460,000	[3]
Cash received						186,691,000				474,866,000				488,389,000				375,621,000
Notional amount acquired of non-rated, interest only senior certificates						186,691,000	[1]			474,866,000	[1]			488,389,000	[1]			0	[1]
Unamortized deferred costs						659,000				38,000				469,000				183,000
Non-Agency MBS transferred to consolidated variable interest entities (VIEs)	2,200,288,000	[4]	2,282,371,000	[4]
Residential whole loans					59,700,000
Ownership percentage by parent																						100.00%
Other Income	$ 650,000

[1] Amount disclosed reflects principal balance on the DMSI 2010-RS A1, A2 and A3 bonds. The DMSI 2010-RS2 A2 and A3 bond was sold to third party investors during 2013. The principal balance for the DMSI 2010-RS2 A1 Bond and associated interest only Senior certificate was paid off during the three months ended June 30, 2013.

[2] Securitized Debt represents third-party liabilities of consolidated VIEs and excludes liabilities of the VIEs acquired by the Company that eliminate on consolidation. The third-party beneficial interest holders in the VIEs have no recourse to the general credit of the Company. (See Notes 10 and 15 for further discussion.)

[3] Provides credit support for the sequential Senior Non-Agency MBS sold to third-party investors in resecuritization transactions (“Senior Bonds”).

[4] Non-Agency MBS transferred to consolidated VIEs represent assets of the consolidated VIEs that can be used only to settle the obligations of each respective VIE.