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Short-Term Debt - Outstanding Balances of Short-Term Debt by Type of Collateral Securing Debt (Detail) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 USD ($) Contract | Dec. 31, 2014 USD ($) Contract
Short-term Debt [Line Items] |  |  |
Number of Facilities | Contract |  | 16 | 17
Outstanding | [1] | $ 1,367,062,000 | $ 1,793,825,000
Residential Loans |  |  |
Short-term Debt [Line Items] |  |  |
Number of Facilities | Contract |  | 5 | 5
Outstanding |  | $ 776,824,000 | $ 1,076,188,000
Limit |  | $ 1,800,000,000 | $ 1,550,000,000
Residential Loans | Minimum |  |  |
Short-term Debt [Line Items] |  |  |
Maturity |  | 2015-04 | 2015-02
Residential Loans | Maximum |  |  |
Short-term Debt [Line Items] |  |  |
Maturity |  | 2016-02 | 2015-12
Commercial Loans |  |  |
Short-term Debt [Line Items] |  |  |
Number of Facilities | Contract |  | 3 | 3
Outstanding |  | $ 96,849,000 | $ 109,128,000
Limit |  | $ 450,000,000 | $ 400,000,000
Commercial Loans | Minimum |  |  |
Short-term Debt [Line Items] |  |  |
Maturity |  | 2015-04 | 2015-04
Commercial Loans | Maximum |  |  |
Short-term Debt [Line Items] |  |  |
Maturity |  | 2016-10 | 2016-10
Real Estate Securities |  |  |
Short-term Debt [Line Items] |  |  |
Number of Facilities | Contract |  | 8 | 9
Outstanding |  | $ 493,389,000 | $ 608,509,000
Real Estate Securities | Minimum |  |  |
Short-term Debt [Line Items] |  |  |
Maturity |  | 2015-04 | 2015-01
Real Estate Securities | Maximum |  |  |
Short-term Debt [Line Items] |  |  |
Maturity |  | 2015-06 | 2015-03
[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.

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