GOODWILL AND INTANGIBLE ASSETS (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Jun. 12, 2015
Goodwill And Core Deposit Intangibles [Line Items]
Goodwill	$ 90,082,000	$ 63,547,000	$ 35,049,000
Amortization of Intangible Assets	$ 3,741,000	2,330,000	$ 1,414,000
Maximum [Member]
Goodwill And Core Deposit Intangibles [Line Items]
Core Deposits Intangibles Amortization Period	7 years
Minimum [Member]
Goodwill And Core Deposit Intangibles [Line Items]
Core Deposits Intangibles Amortization Period	3 years
Coastal Bank share Inc [Member]
Goodwill And Core Deposit Intangibles [Line Items]
Goodwill, Acquired During Period	$ 656,000	27,437,000
Goodwill		28,093,000
Finite Lived Intangible Asset Acquired During Period		$ 4,542,000
Bank Of America [Member]
Goodwill And Core Deposit Intangibles [Line Items]
Goodwill, Acquired During Period	11,210,000
Goodwill				$ 0
Finite Lived Intangible Asset Acquired During Period	8,636,000
Merchants [Member]
Goodwill And Core Deposit Intangibles [Line Items]
Goodwill, Acquired During Period	14,700,000
Finite Lived Intangible Asset Acquired During Period	$ 3,943,000