XML 14 R54.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Securitization Activity Related to Unconsolidated Variable Interest Entity's Sponsored by Redwood (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Variable Interest Entity [Line Items] |  |  |  |
MSRs recognized |  |  | $ 30,962 | $ 41,128
Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Principal balance of loans transferred | 635,608 | 1,210,604 | 982,913 | 5,253,314
MSRs recognized | 4,356 | 12,514 | 6,542 | 41,128
Variable Interest Entity, Not Primary Beneficiary | Trading Securities |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Securities retained, at fair value | 1,680 | 8,702 | 71,243 | 100,552
Variable Interest Entity, Not Primary Beneficiary | Available-for-sale Securities |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Securities retained, at fair value | $ 39,330 | $ 71,527 | $ 59,757 | $ 278,622

X
- Definition Principal Amount Of Loans Securitized During Period + References No definition available. + Details
Name: | rwt_PrincipalAmountOfLoansSecuritizedDuringPeriod
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Securities Retained At Fair Value During Period + References No definition available. + Details
Name: | rwt_SecuritiesRetainedAtFairValueDuringPeriod
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746 + Details
Name: | us-gaap_ServicingAssetAtFairValueAdditions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration