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Residential Loans - Summary of Classifications and Carrying Value of Residential Loans (Detail) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | $ 4,040,138 | $ 3,928,803
Residential Loans Held For Sale |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans | [1] | 882,380 | 1,115,738
Residential Loans at Fair Value |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 881,000 | 1,110,000
Residential Loans at Fair Value | Jumbo Loan |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 881,100 | 984,486
Residential Loans at Fair Value | Conforming Loan |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  |  | 129,819
Residential Loans at Lower of Cost or Fair Value |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 1,280 | 1,433
Residential Loans Held For Investment at Fair Value |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  |  | 1,790,000
Residential Loans Held For Investment at Fair Value | Jumbo Loan |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 3,157,758 | 2,813,065
Redwood |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 3,159,941 | 2,906,933
Redwood | Residential Loans Held For Sale |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 882,380 | 1,115,738
Redwood | Residential Loans at Fair Value | Jumbo Loan |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 881,100 | 984,486
Redwood | Residential Loans at Fair Value | Conforming Loan |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  |  | 129,819
Redwood | Residential Loans at Lower of Cost or Fair Value |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 1,280 | 1,433
Redwood | Residential Loans Held For Investment at Fair Value | Jumbo Loan |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 2,277,561 | 1,791,195
Sequoia |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 880,197 | 1,021,870
Sequoia | Residential Loans Held For Sale |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 0 | 0
Sequoia | Residential Loans at Fair Value | Jumbo Loan |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 0 | 0
Sequoia | Residential Loans at Fair Value | Conforming Loan |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  |  | 0
Sequoia | Residential Loans at Lower of Cost or Fair Value |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 0 | 0
Sequoia | Residential Loans Held For Investment at Fair Value |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | 880,000 | 1,020,000
Sequoia | Residential Loans Held For Investment at Fair Value | Jumbo Loan |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |
Residential loans |  | $ 880,197 | $ 1,021,870
[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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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of consumer loans, including, but not limited to, mortgage, home equity, vehicles, credit card, installment, and lease financing. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5066-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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