LOAN SERVICING - SBA GUARANTEED LOANS (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Servicing Assets at Fair Value [Line Items]
Government-guaranteed lending income	$ 3,600,000	$ 3,009,000	$ 9,352,000	$ 9,559,000
SBA Guaranteed Loans Servicing
Servicing Assets at Fair Value [Line Items]
Unpaid principal balance	240,081,000		240,081,000		$ 205,879,000
Government-guaranteed lending income	528,000	473,000	1,597,000	1,258,000
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance at beginning of period before valuation allowance	4,899,000	3,520,000	4,485,000	3,081,000
Additions	461,000	560,000	1,501,000	1,095,000
Amortization	(207,000)	(144,000)	(849,000)	(240,000)
Balance at end of period before valuation allowance	5,153,000	3,936,000	5,153,000	3,936,000
Valuation allowance at end of period	(110,000)	0	(110,000)	0	$ 0
Balance at end of period after valuation allowance	5,043,000	3,936,000	5,043,000	3,936,000
SBA Guaranteed Loans Servicing | NewBridge Bancorp
Servicing Asset at Fair Value, Amount [Roll Forward]
Fair value of SBA servicing assets acquired in NewBridge Merger	$ 0	$ 0	$ 16,000	$ 0