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SERVICING RIGHTS - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Transfers and Servicing [Abstract]
Income earned on mortgage servicing rights	$ (2,254)	$ 924	$ (689)	$ 2,951
Loss on fair values of servicing rights	5,500	$ 412	8,600	$ 1,200
Increase in servicing rights	1,900		3,800
Unpaid principal balance	4,060,000		4,060,000		$ 1,920,000
Escrow balances	32,500		32,500		8,300
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Servicing rights held for sale, carried at fair value	$ 0		$ 0		5,947
Discount rate			7.25%
Prepayment speed			7.25%
Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Servicing rights held for sale, carried at fair value					$ 5,900

X

- Definition

Continuing Involvement with Derecognized Transferred Financial Assets, Recorded Escrow Balance

+ References

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X

- Definition

Servicing Asset, Held-For-Sale

+ References

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- Definition

Servicing Asset at Amortized Cost, Discount Rate

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- Definition

Servicing Asset at Amortized Cost, Prepayment Speed Calculation, Percentage

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- Definition

Amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction that have been derecognized. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 860



-SubTopic 20



-Section 50



-Paragraph 4



-Subparagraph (a)(2)



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- Definition

The adjustment to the carrying value of the rights retained or purchased to service mortgages. These adjustments are made when the estimate of the fair value is changed. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 230



-SubTopic 10



-Section 45



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The increase (decrease) in the fair value of servicing assets that are subsequently measured at fair value.

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Amount of revenue from servicing real estate mortgages, credit cards, and other financial assets held by others. Includes premiums received in lieu of regular servicing fees.

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-Publisher FASB



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