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GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Additional Information (Detail) $ in Thousands		3 Months Ended		6 Months Ended
	Jul. 03, 2015 Branch	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill		$ 31,591		$ 31,591		$ 31,591
Finite-Lived Intangible Assets [Line Items]
Impairment on intangible assets		258	$ 0	258	$ 0
Aggregate amortization expense		1,545	$ 944	3,089	$ 1,883
Banking
Finite-Lived Intangible Assets [Line Items]
Goodwill transferred between segments				29,500
Mortgage Banking
Finite-Lived Intangible Assets [Line Items]
Goodwill transferred between segments				$ 2,100
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Impairment on intangible assets		$ 258
Weighted average amortization period				7 years 9 months 7 days
Core deposit intangibles \| Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization period of other intangible assets				4 years
Core deposit intangibles \| Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization period of other intangible assets				10 years
Customer relationship intangible
Finite-Lived Intangible Assets [Line Items]
Amortization period of other intangible assets				5 years
Remaining amortization period				3 years 6 months 29 days
Subsequent Event
Finite-Lived Intangible Assets [Line Items]
Number of branches sold \| Branch	2