Assets and Liabilities of Consolidated Variable Interest Entity's (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014 Entity	Dec. 31, 2013 Entity
Variable Interest Entity [Line Items]
Assets	$ 1,900,208	$ 2,299,576
Liabilities	1,546,490	1,944,911
Number of VIEs	26	26
Residential Loans Held for Investment
Variable Interest Entity [Line Items]
Assets	1,474,386	1,762,167
Commercial Loans Held For Investment
Variable Interest Entity [Line Items]
Assets	194,991	257,741
Real Estate Securities
Variable Interest Entity [Line Items]
Assets	221,676	263,204
Restricted Cash
Variable Interest Entity [Line Items]
Assets	327	289
Accrued Interest Receivable
Variable Interest Entity [Line Items]
Assets	4,347	5,316
Other Assets
Variable Interest Entity [Line Items]
Assets	4,481	10,859
Accrued Interest Payable
Variable Interest Entity [Line Items]
Liabilities	1,371	1,949
Asset-backed Securities
Variable Interest Entity [Line Items]
Liabilities	1,545,119	1,942,962
Sequoia
Variable Interest Entity [Line Items]
Assets	1,481,303	1,768,694
Liabilities	1,417,738	1,695,553
Number of VIEs	24	24
Sequoia \| Residential Loans Held for Investment
Variable Interest Entity [Line Items]
Assets	1,474,386	1,762,167
Sequoia \| Restricted Cash
Variable Interest Entity [Line Items]
Assets	147	152
Sequoia \| Accrued Interest Receivable
Variable Interest Entity [Line Items]
Assets	2,359	2,714
Sequoia \| Other Assets
Variable Interest Entity [Line Items]
Assets	4,411	3,661
Sequoia \| Accrued Interest Payable
Variable Interest Entity [Line Items]
Liabilities	976	1,218
Sequoia \| Asset-backed Securities
Variable Interest Entity [Line Items]
Liabilities	1,416,762	1,694,335
Residential Resecuritization
Variable Interest Entity [Line Items]
Assets	222,196	263,831
Liabilities	45,049	94,945
Number of VIEs	1	1
Residential Resecuritization \| Real Estate Securities
Variable Interest Entity [Line Items]
Assets	221,676	263,204
Residential Resecuritization \| Restricted Cash
Variable Interest Entity [Line Items]
Assets	43
Residential Resecuritization \| Accrued Interest Receivable
Variable Interest Entity [Line Items]
Assets	477	627
Residential Resecuritization \| Accrued Interest Payable
Variable Interest Entity [Line Items]
Liabilities	5	11
Residential Resecuritization \| Asset-backed Securities
Variable Interest Entity [Line Items]
Liabilities	45,044	94,934
Commercial Securitization
Variable Interest Entity [Line Items]
Assets	196,709	267,051
Liabilities	83,703	154,413
Number of VIEs	1	1
Commercial Securitization \| Commercial Loans Held For Investment
Variable Interest Entity [Line Items]
Assets	194,991	257,741
Commercial Securitization \| Restricted Cash
Variable Interest Entity [Line Items]
Assets	137	137
Commercial Securitization \| Accrued Interest Receivable
Variable Interest Entity [Line Items]
Assets	1,511	1,975
Commercial Securitization \| Other Assets
Variable Interest Entity [Line Items]
Assets	70	7,198
Commercial Securitization \| Accrued Interest Payable
Variable Interest Entity [Line Items]
Liabilities	390	720
Commercial Securitization \| Asset-backed Securities
Variable Interest Entity [Line Items]
Liabilities	$ 83,313	$ 153,693

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- Definition

The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (bb)

-URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5710-111685

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The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.

+ References

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