BUSINESS COMBINATIONS (Details 3) - Coastal Bankshares, Inc. [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net interest income and noninterest income	$ 78,798	$ 64,931
Net income	$ 13,052	$ 12,195
Income per common share available to common stockholders - basic	$ 0.38	$ 0.37
Income per common share available to common stockholders - diluted	$ 0.37	$ 0.37
Average number of shares outstanding, basic	34,741	32,992
Average number of shares outstanding, diluted	35,043	33,345