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Principles of Consolidation - Securitization Activity Related to Unconsolidated Variable Interest Entity's Sponsored by Redwood (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Variable Interest Entity [Line Items]
MSRs recognized			$ 52,297	$ 30,962
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Principal balance of loans transferred	$ 0	$ 635,608	1,038,451	982,913
MSRs recognized	0	4,356	7,874	6,542
Variable Interest Entity, Not Primary Beneficiary | Trading Securities
Variable Interest Entity [Line Items]
Securities retained, at fair value	0	1,680	33,389	71,243
Variable Interest Entity, Not Primary Beneficiary | Available-for-sale Securities
Variable Interest Entity [Line Items]
Securities retained, at fair value	$ 0	$ 39,330	$ 6,309	$ 59,757

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- Definition

Principal Amount Of Loans Securitized During Period

+ References

No definition available.

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- Definition

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+ References

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- 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=56950315&loc=d3e122625-111746

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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