COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Lending commitments:
Commitments to extend credit	$ 799,058	$ 658,925
Financial standby letters of credit	16,342	12,421
Other commitments:
Standby letters of credit issued by the FHLB on the Bank's behalf	10,000	10,000
Capital commitments to private investment funds	4,751	2,280
Reserve for unfunded commitments	$ 603	$ 522