PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 113,838	$ 104,558	$ 51,730	$ 45,573
Other assets	38,911	38,732
Total Assets	4,054,570	3,781,959
LIABILITIES AND STOCKHOLDERS' EQUITY
Subordinated debentures	78,502	78,363
Junior subordinated debentures	15,244	15,878
Total Liabilities	3,646,583	3,440,831
Total Stockholders' Equity	407,987	341,128	175,118	159,460
Total Liabilities and Stockholders' Equity	4,054,570	3,781,959
Parent Company
ASSETS
Cash and cash equivalents	29,049	25,475	$ 610	$ 37,364
Other assets	228	16
Investment in the Bank	474,035	411,106
Total Assets	503,312	436,597
LIABILITIES AND STOCKHOLDERS' EQUITY
Subordinated debentures	78,502	78,363
Junior subordinated debentures	15,244	15,878
Other liabilities	1,579	1,228
Total Liabilities	95,325	95,469
Total Stockholders' Equity	407,987	341,128
Total Liabilities and Stockholders' Equity	$ 503,312	$ 436,597