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RISK MANAGEMENT AND DERIVATIVE INSTRUMENTS - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Sep. 30, 2015
Interest Rate Swap Maturing on September 27, 2018 | Cash Flow Hedging
Derivative [Line Items]
Derivatives, notional amount		$ 50,000,000
Interest Rate Swap Maturing on January 30, 2022 | Cash Flow Hedging
Derivative [Line Items]
Derivatives, notional amount		25,000,000
Interest rate swaps on deposits and other borrowings
Derivative [Line Items]
Derivatives asset, fair values			$ 918,000
Loss on derivative instruments	$ 1,400,000
Net Revenue on Mortgage Banking Activities
Derivative [Line Items]
Derivatives gain (loss)	$ (6,300,000)	$ (2,700,000)

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
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-Name Accounting Standards Codification
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