MERGERS AND ACQUISITIONS MERGERS AND ACQUISITIONS - Balance Sheet NBBC (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Cash and cash equivalents	$ 111,918	$ 132,365	$ 100,780	$ 50,513
Accrued interest receivable and other assets	53,032	36,506
Total assets	4,474,144	4,268,034
Deposits	3,310,297	3,247,364
Total liabilities	3,911,595	3,710,232
Shareholders' equity	562,549	557,802	$ 238,059	$ 180,722
Total liabilities and shareholders' equity	4,474,144	$ 4,268,034
NewBridge Bancorp
Business Acquisition [Line Items]
Cash and cash equivalents	42,426
Investment securities	496,809
Loans, net	2,067,627
Accrued interest receivable and other assets	203,878
Total assets	2,810,740
Deposits	1,948,655
Short-term borrowings and long-term debt	576,024
Other liabilities	29,065
Total liabilities	2,553,744
Shareholders' equity	256,996
Total liabilities and shareholders' equity	$ 2,810,740