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SERVICING RIGHTS - Summary of Key Characteristics, Inputs and Economic Assumptions Used to Estimate Fair Value of MSRs (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Transfers and Servicing [Abstract]
Fair value of retained MSRs	$ 40,837	$ 13,135
Discount rate	9.88%	10.09%
Constant prepayment rate	12.09%	13.22%
Weighted-average life	6 years 4 months 28 days	5 years 9 months 18 days

X

- Definition

Servicing Asset at Fair Value, Amount, Held-For-Investment

+ References

No definition available.

+ Details

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X

- Definition

Discount rate which is used to value residual cash flows generated by financial assets of the securitization, asset-backed financing arrangement, or similar transfer for initial fair value measurement.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 860



-SubTopic 20



-Section 50



-Paragraph 3



-Subparagraph (c)(1)



-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107207-111719

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X

- Definition

Estimated rate of prepayment of principal on financial assets for initial fair value measurement.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 860



-SubTopic 20



-Section 50



-Paragraph 3



-Subparagraph (c)(2)



-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107207-111719

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X

- Definition

Weighted average life of securitized assets for initial fair value measurement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 860



-SubTopic 20



-Section 50



-Paragraph 3



-Subparagraph (c)(2)



-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107207-111719

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- References

No definition available.

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