PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 104,558	$ 51,730	$ 45,573	$ 51,249
Other assets	38,732	19,244
Total Assets	3,781,959	2,288,524
LIABILITIES AND STOCKHOLDERS' EQUITY
Subordinated debentures	78,363
Junior subordinated debentures	15,878	15,873
Total Liabilities	3,440,831	2,113,406
Total Stockholders' Equity	341,128	175,118	159,460	118,672
Total Liabilities and Stockholders' Equity	3,781,959	2,288,524
Parent Company
ASSETS
Cash and cash equivalents	25,475	610	$ 37,364	$ 5,203
Other assets	16	89
Investment in the Bank	411,106	190,292
Total Assets	436,597	190,991
LIABILITIES AND STOCKHOLDERS' EQUITY
Subordinated debentures	78,363
Junior subordinated debentures	15,878	15,873
Other liabilities	1,228
Total Liabilities	95,469	15,873
Total Stockholders' Equity	341,128	175,118
Total Liabilities and Stockholders' Equity	$ 436,597	$ 190,991