MERGERS AND ACQUISITIONS (Details 3) - USD ($) $ / shares in Units, $ in Thousands		2 Months Ended	3 Months Ended
		Feb. 29, 2016	Mar. 31, 2016	Mar. 31, 2015
Business Acquisition, Related Expenses [Abstract]
Merger and conversion costs			$ 10,335	$ 220
Professional services			1,108	1,092
Personnel-related expenses			18,040	15,202
NewBridge Bancorp
Business Acquisition, Pro Forma Information [Abstract]
Net interest income			62,129	63,355
Net income	[1]		5,547	15,447
Net income available to common stockholders	[1]		$ 4,908	$ 15,447
Basic income per common share	[1]		$ 0.10	$ 0.30
Diluted income per common share	[1]		$ 0.10	$ 0.30
Weighted average basic common shares outstanding (in shares)			50,529,046	51,179,710
Weighted average diluted common shares outstanding (in shares)			50,775,849	51,271,748
Business Acquisition, Related Expenses [Abstract]
Merger and conversion costs			$ 10,335
Professional services			6,659
Facility and equipment related expense			1,414
Personnel-related expenses			4,919
Miscellaneous expenses			$ 874
NewBridge Bancorp
Business Acquisition, Related Expenses [Abstract]
Merger and conversion costs		$ 3,532

[1] For purposes of the supplemental pro forma information, merger-related expenses of $10,335 that are reflected in the Company's first quarter 2016 consolidated financial statements and $3,532 of merger-related expenses that were recorded by NewBridge prior to the merger date were reflected in the pro forma presentation for the first quarter of 2015. These pro forma merger-related expenses include $6,659 of professional fees paid for investment banking, legal and accounting services, $4,919 of personnel-related expenses, $1,414 of facility and equipment-related expenses, and $874 of other miscellaneous expenses related to the NewBridge Merger.