MERGERS AND ACQUISITIONS (Details 3) - USD ($) $ / shares in Units, $ in Thousands	2 Months Ended	3 Months Ended			6 Months Ended
	Feb. 29, 2016	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Business Acquisition, Related Expenses [Abstract]
Merger and conversion costs		$ 6,531		$ (25)	$ 16,866	$ 195
Professional services		1,547		1,407	2,655	2,499
Personnel-related expenses		$ 22,939		15,391	40,979	30,593
NewBridge Bancorp
Business Acquisition, Pro Forma Information [Abstract]
Net interest income				62,449	127,716	102,148
Net income				10,798	36,986	12,378
Net income available to common stockholders				$ 10,616	$ 36,986	$ 11,557
Basic income per common share (in dollar per share)				$ 0.21	$ 0.72	$ 0.23
Diluted income per common share (in dollar per share)				$ 0.21	$ 0.72	$ 0.23
Weighted average basic common shares outstanding (in shares)				50,531,158	51,235,805	50,530,108
Weighted average diluted common shares outstanding (in shares)				50,777,541	51,365,402	50,776,706
Business Acquisition, Related Expenses [Abstract]
Merger and conversion costs	$ 3,532		$ 16,866
Professional services					$ 7,481
Personnel-related expenses					8,594
Facility and equipment related expense					3,046
Miscellaneous expenses					$ 1,277