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Commercial Loans - Additional Information (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2016 USD ($) loan | Jun. 30, 2015 USD ($) loan | Dec. 31, 2015 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Transfers from loans held-for-investment to loans held-for-sale |  |  |  |  | $ 359,005 | $ 0 |
Aggregate fair value |  | $ 325,063 | $ 325,063 |  | 325,063 |  | $ 402,647
Loans receivable, fair value |  | 325,063 | 325,063 |  | 325,063 |  | 402,647
Senior commercial loans, held for sale |  |  |  |  | 2,578,592 | 5,656,836 |
Sale of loan for third party, held for sale |  |  |  |  | $ 2,158,601 | $ 5,366,705 |
Average recorded investment of impaired loan |  |  | 18,000 |  |  |  |
Commercial Loans Held-for-Investment, at Amortized Cost |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans financed through securitization |  |  |  |  |  |  | 166,000
Loan pledged as collateral |  |  |  |  |  |  | 135,000
Number of loans | loan |  |  |  |  | 2 | 59 |
Aggregate fair value |  | 22,285 | 22,285 |  | $ 22,285 |  | 295,849
Loans receivable, fair value |  | 22,285 | 22,285 |  | 22,285 |  | 295,849
Recorded investment in loans |  | 23,144 | 23,144 |  | 23,144 |  | 302,951
Commercial Loans Held-for-Investment, at Amortized Cost | Fair Value |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans receivable, fair value |  | $ 22,421 | $ 22,421 |  | $ 22,421 |  | 300,824
Commercial Loans Held-for-Investment, at Amortized Cost | Originated During 2012 |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Percentage of loan portfolio originated in year |  | 24.00% | 24.00% |  | 24.00% |  |
Commercial Loans Held-for-Investment, at Amortized Cost | Originated During 2011 |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Percentage of loan portfolio originated in year |  | 76.00% | 76.00% |  | 76.00% |  |
Commercial Loans, A and B-Notes |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Number of loans | loan |  |  |  |  | 3 |  |
Principal balance |  | $ 67,000 | $ 67,000 |  | $ 67,000 |  | 67,000
Loans receivable, fair value |  | 70,000 | 70,000 |  | 70,000 |  | 68,000
Commercial Loans, Held-for-Sale |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Number of loans | loan |  |  |  |  |  | 4 |
Principal balance |  |  |  |  |  |  | 39,000
Aggregate fair value | [1] | 302,778 | 302,778 |  | 302,778 |  | 39,141
Loans receivable, fair value |  | 69,720 | 69,720 |  | 69,720 |  | 39,141
Senior commercial loans, held for sale |  |  |  | $ 258,000 | 38,000 | $ 350,000 |
Sale of loan for third party, held for sale |  |  |  | 146,000 | 76,000 | 348,000 |
Valuation adjustments |  |  |  | $ 1,000 | 400 | $ 7,000 |
Loans, held-for-sale |  | 69,720 | 69,720 |  | 69,720 |  | 39,141
Commercial Loans, Held-for-Sale | Fair Value |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans, held-for-sale |  | 69,720 | 69,720 |  | 69,720 |  | $ 39,141
Commercial Loans Held For Investment |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Transfer of loans held-for-sale to held-for-sale, principal balance |  | 67,000 |  |  |  |  |
Transfers from loans held-for-investment to loans held-for-sale |  | 70,000 |  |  |  |  |
Number of loans | loan |  |  |  |  |  |  | 3
Aggregate fair value | [1] | 22,285 | 22,285 |  | 22,285 |  | $ 363,506
Loans receivable, fair value |  | 0 | 0 |  | 0 |  | 67,657
Commercial Loans Held-for-Investment, at Fair Value, B-Notes |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Aggregate fair value |  | 4,000 | 4,000 |  | 4,000 |  | 5,000
Commercial Loans at Lower of Cost or Market |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Transfer of loans held-for-sale to held-for-sale, principal balance |  | 237,000 |  |  |  |  |
Transfers from loans held-for-investment to loans held-for-sale |  | 233,000 |  |  |  |  |
Net purchase discount on loans transferred to held-for-sale |  | 4,000 | 4,000 |  | $ 4,000 |  |
Number of loans | loan |  |  |  |  | 51 |  |
Principal balance |  | 237,000 | 237,000 |  | $ 237,000 |  |
Valuation adjustments |  | 4,000 |  |  |  |  |
Loans, held-for-sale |  | 233,058 | 233,058 |  | 233,058 |  | 0
Commercial Loans at Lower of Cost or Market | Fair Value |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Loans, held-for-sale |  | $ 236,824 | $ 236,824 |  | $ 236,824 |  | $ 0
[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 June 30, 2016 and December 31, 2015, assets of consolidated VIEs totaled $888,026 and $1,195,574, respectively. At June 30, 2016 and December 31, 2015, liabilities of consolidated VIEs totaled $860,256 and $1,050,861, respectively. See Note 4 for further discussion.

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