Principles of Consolidation - Assets and Liabilities of Consolidated Variable Interest Entity's (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($) Investment	Dec. 31, 2014 USD ($) Investment
Variable Interest Entity [Line Items]
Assets	$ 1,195,574	$ 1,900,208
Liabilities	$ 1,050,861	$ 1,546,490
Number of VIEs \| Investment	22	26
Residential Loans Held for Investment
Variable Interest Entity [Line Items]
Assets	$ 1,021,870	$ 1,474,386
Commercial Loans Held For Investment
Variable Interest Entity [Line Items]
Assets	166,016	194,991
Real Estate Securities
Variable Interest Entity [Line Items]
Assets	0	221,676
Restricted Cash
Variable Interest Entity [Line Items]
Assets	365	327
Accrued Interest Receivable
Variable Interest Entity [Line Items]
Assets	2,428	4,347
Other Assets
Variable Interest Entity [Line Items]
Assets	4,895	4,481
Accrued Interest Payable
Variable Interest Entity [Line Items]
Liabilities	804	1,371
Accrued expenses and other liabilities
Variable Interest Entity [Line Items]
Liabilities	100
Asset-backed Securities
Variable Interest Entity [Line Items]
Liabilities	1,049,957	1,545,119
Sequoia
Variable Interest Entity [Line Items]
Assets	1,028,124	1,481,303
Liabilities	$ 997,475	$ 1,417,738
Number of VIEs \| Investment	21	24
Sequoia \| Residential Loans Held for Investment
Variable Interest Entity [Line Items]
Assets	$ 1,021,870	$ 1,474,386
Sequoia \| Restricted Cash
Variable Interest Entity [Line Items]
Assets	228	147
Sequoia \| Accrued Interest Receivable
Variable Interest Entity [Line Items]
Assets	1,131	2,359
Sequoia \| Other Assets
Variable Interest Entity [Line Items]
Assets	4,895	4,411
Sequoia \| Accrued Interest Payable
Variable Interest Entity [Line Items]
Liabilities	555	976
Sequoia \| Accrued expenses and other liabilities
Variable Interest Entity [Line Items]
Liabilities	100
Sequoia \| Asset-backed Securities
Variable Interest Entity [Line Items]
Liabilities	996,820	1,416,762
Residential Resecuritization
Variable Interest Entity [Line Items]
Assets	0	222,196
Liabilities	$ 0	$ 45,049
Number of VIEs \| Investment	0	1
Residential Resecuritization \| Real Estate Securities
Variable Interest Entity [Line Items]
Assets	$ 0	$ 221,676
Residential Resecuritization \| Restricted Cash
Variable Interest Entity [Line Items]
Assets	0	43
Residential Resecuritization \| Accrued Interest Receivable
Variable Interest Entity [Line Items]
Assets	0	477
Residential Resecuritization \| Accrued Interest Payable
Variable Interest Entity [Line Items]
Liabilities	0	5
Residential Resecuritization \| Accrued expenses and other liabilities
Variable Interest Entity [Line Items]
Liabilities	0
Residential Resecuritization \| Asset-backed Securities
Variable Interest Entity [Line Items]
Liabilities	0	45,044
Commercial Securitization
Variable Interest Entity [Line Items]
Assets	167,450	196,709
Liabilities	$ 53,386	$ 83,703
Number of VIEs \| Investment	1	1
Commercial Securitization \| Commercial Loans Held For Investment
Variable Interest Entity [Line Items]
Assets	$ 166,016	$ 194,991
Commercial Securitization \| Restricted Cash
Variable Interest Entity [Line Items]
Assets	137	137
Commercial Securitization \| Accrued Interest Receivable
Variable Interest Entity [Line Items]
Assets	1,297	1,511
Commercial Securitization \| Other Assets
Variable Interest Entity [Line Items]
Assets	0	70
Commercial Securitization \| Accrued Interest Payable
Variable Interest Entity [Line Items]
Liabilities	249	390
Commercial Securitization \| Accrued expenses and other liabilities
Variable Interest Entity [Line Items]
Liabilities	0
Commercial Securitization \| Asset-backed Securities
Variable Interest Entity [Line Items]
Liabilities	$ 53,137	$ 83,313

Number of Variable Interest Entities, Acquired and Consolidated

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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=52262685&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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+ References

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