EMPLOYEE AND DIRECTOR BENEFIT PLANS - Stock Options (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options acquired (in shares)	161,013
Weighted average exercise price, options acquired (in dollars per share)	$ 16.51
Options granted (in shares)	0
Outstanding Options, Number
Options, Outstanding, January 1, 2016 (in shares)	33,808
Exercised (in shares)	258,553
Expired (in shares)	21,911
Forfeited (in shares)	10,599
Options, Outstanding, December 31, 2016 (in shares)	161,013	33,808
Outstanding Options, Weighted Average Option Price
Options, Outstanding, Weighted Average Option Price at January 1, 2016 (in dollars per share)	$ 39.98
Exercised (in dollars per share)	9.67
Expired (in dollars per share)	42.87
Forfeited (in dollars per share)	35.04
Options, Outstanding, Weighted Average Option Price at December 31, 2016 (in dollars per share)	$ 16.51	$ 39.98
Exercisable Options, Number
Options, Exercisable, January 1, 2016 (in shares)	33,808
Exercised (in shares)	258,553
Expired (in shares)	21,911
Forfeited (in shares)	10,599
Options, Exercisable, December 31, 2016 (in shares)	161,013	33,808
Exercisable Options, Weighted Average Option Price
Exercisable, Weighted Average Option Price, Period Start (in dollars per share)	$ 39.98
Exercised (in dollars per share)	9.67
Expired (in dollars per share)	42.87
Forfeited (in dollars per share)	35.04
Exercisable, Weighted Average Option Price, Period End (in dollars per share)	$ 16.51	$ 39.98
Weighted average remaining life of options exercisable	1 year 10 months 10 days	1 year 2 months 16 days
NewBridge Bancorp
Outstanding Options, Number
Options assumed in NewBridge Merger (in shares)	418,268
Outstanding Options, Weighted Average Option Price
Options outstanding assumed in NewBridge Merger (in dollars per share)	$ 12.24
Exercisable Options, Number
Options exercisable assumed in NewBridge Merger (in shares)	418,268
Exercisable Options, Weighted Average Option Price
Options assumed in NewBridge Merger	$ 12.24
Restricted stock
Exercisable Options, Weighted Average Option Price
Compensation cost charged to earnings related to stock options	$ 0	$ 0	$ 0
Aggregate intrinsic value of total options outstanding	$ 2,882,000
Unrecognized compensation costs		$ 0
2008 Omnibus Stock Ownership and Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	9,621
Options granted (in shares)	0
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	108,000
Options granted (in shares)	0