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RISK MANAGEMENT AND DERIVATIVE INSTRUMENTS - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2015	Jan. 30, 2015	Sep. 30, 2013
Interest Rate Swap Maturing on September 27, 2018 | Cash Flow Hedging
Derivative [Line Items]
Derivatives, notional amount							$ 50,000,000
Termination of derivatives	$ 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			$ 767,000
Net Revenue on Mortgage Banking Activities
Derivative [Line Items]
Derivatives gain (loss)	$ (7,200,000)	$ 13,000	$ (13,600,000)	$ (2,700,000)

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+ References

No definition available.

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+ 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)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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-Name Accounting Standards Codification
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-Section 50
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-Subparagraph (c)(2)
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