Asset-Backed Securities Issued - Summary of Accrued Interest Payable on Asset-Backed Securities Issued (Detail) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Accrued interest payable	[1]	$ 8,291	$ 8,503
Asset-backed Securities | Variable Interest Entity, Primary Beneficiary
Debt Instrument [Line Items]
Accrued interest payable		1,127	1,371
Asset-backed Securities | Variable Interest Entity, Primary Beneficiary | Sequoia
Debt Instrument [Line Items]
Accrued interest payable		797	976
Asset-backed Securities | Variable Interest Entity, Primary Beneficiary | Residential Resecuritization
Debt Instrument [Line Items]
Accrued interest payable		2	5
Asset-backed Securities | Variable Interest Entity, Primary Beneficiary | Commercial Securitization
Debt Instrument [Line Items]
Accrued interest payable		$ 328	$ 390

[1] Our consolidated balance sheets include assets of consolidated variable interest entities (“VIEs”) that can only be used to settle obligations of these VIEs and liabilities of consolidated VIEs for which creditors do not have recourse to the primary beneficiary (Redwood Trust, Inc.). At June 30, 2015 and December 31, 2014, assets of consolidated VIEs totaled $1,622,636 and $1,900,208, respectively, and liabilities of consolidated VIEs totaled $1,263,249 and $1,546,490, respectively. See Note 4 for further discussion.