COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Commitments to extend credit	$ 669,353	$ 548,898	$ 431,678
Unused lines of credit	63,244	52,798	51,834
Financial standby letters of credit	15,587	14,712	10,535
Mortgage interest rate lock commitments	$ 154,589	$ 77,710	$ 91,977