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Securitization Activity Related to Unconsolidated Variable Interest Entity's Sponsored by Redwood (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Variable Interest Entity [Line Items]
MSRs recognized			$ 11,976	$ 28,614
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Principal balance of loans transferred	347,305	1,802,058	347,305	4,042,710
Gains on sale
MSRs recognized	2,186	16,148	2,186	28,614
Variable Interest Entity, Not Primary Beneficiary | Trading Securities
Variable Interest Entity [Line Items]
Securities retained, at fair value	69,563	40,642	69,563	91,850
Variable Interest Entity, Not Primary Beneficiary | Available-for-sale Securities
Variable Interest Entity [Line Items]
Securities retained, at fair value	$ 20,428	$ 92,367	$ 20,428	$ 207,095

X

- Definition

Principal Amount Of Loans Securitized During Period

+ References

No definition available.

+ Details

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X

- Definition

Securities Retained At Fair Value During Period

+ References

No definition available.

+ Details

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X

- Definition

A gain (loss) realized on a transfer, accounted for as a sale, of all or a portion of financial assets in which the transferor surrenders control and receives consideration other than a beneficial interest in the assets transferred. Reflects the amount of sales proceeds in excess of, or deficient from, the sum of the carrying amounts of transferred financial assets plus transaction costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.7,9)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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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

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