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FAIR VALUES OF FINANCIAL INSTRUMENTS - 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
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Servicing rights held for sale, carried at fair value	$ 0		$ 0		$ 5,947
Valuation allowance for other real estate owned	16	$ 0	$ 38	$ 0
Alternative investments liquidation period			10 years
Affordable Housing Fund Investment
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Alternative investments unfunded investment commitments	487		$ 487
Small Business Investment Companies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Alternative investments unfunded investment commitments	5,600		5,600
Other Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Alternative investments unfunded investment commitments	$ 2,000		$ 2,000
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

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Amount of expense recognized in the income statement for a decrease in valuation of real estate owned (REO).

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 942



-SubTopic 210



-Section S99



-Paragraph 1



-Subparagraph (SX 210.9-03.10(4))



-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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