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Derivative Financial Instruments - Additional Information (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 USD ($) counterparty | Mar. 31, 2016 USD ($) | Dec. 31, 2016 USD ($)
Derivative [Line Items] |  |  |  |
Notional amount |  | $ 6,128,754,000 |  | $ 4,980,343,000
Accumulated other comprehensive income | [1] | $ 72,602,000 |  | 71,853,000
Number of counterparties (in counterparties) | counterparty |  | 3 |  |
Net Unrealized Losses on Interest Rate Agreements Accounted for as Cash Flow Hedges |  |  |  |
Derivative [Line Items] |  |  |  |
Accumulated other comprehensive income |  | $ (42,000,000) |  | (44,000,000)
Mortgage Banking Activities, Net |  |  |  |
Derivative [Line Items] |  |  |  |
Market valuations gains and losses, net |  | 17,397,000 | $ 7,237,000 |
Loan purchase commitments | Mortgage Banking Activities, Net |  |  |  |
Derivative [Line Items] |  |  |  |
Market valuations gains and losses, net |  | 10,265,000 | 12,635,000 |
Interest rate contract |  |  |  |
Derivative [Line Items] |  |  |  |
Notional amount |  | 2,820,000,000 |  | 2,460,000,000
TBAs |  |  |  |
Derivative [Line Items] |  |  |  |
Notional amount |  | 2,120,000,000 |  | 1,360,000,000
Futures |  |  |  |
Derivative [Line Items] |  |  |  |
Notional amount |  | 60,000,000 |  | $ 88,000,000
Unsecuritized Residential and Commercial Loans |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative gain (loss) |  | (7,000,000) | (8,000,000) |
Interest rate swaps | Cash Flow Hedging |  |  |  |
Derivative [Line Items] |  |  |  |
Notional amount |  | 140,000,000 |  |
Derivative gain (loss) |  | $ 2,000,000 | $ (14,000,000) |
[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 Redwood Trust, Inc. or its affiliates. At March 31, 2017 and December 31, 2016, assets of consolidated VIEs totaled $750,694 and $798,317, respectively. At March 31, 2017 and December 31, 2016, liabilities of consolidated VIEs totaled $728,923 and $773,980, respectively. See Note 4 for further discussion.

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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