COMMITMENTS AND CONTINGENCIES (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Lending commitments:
Commitments to extend credit	$ 658,925	$ 293,371
Financial standby letters of credit	12,421	8,571
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	2,280	1,744
Reserve for unfunded commitments	$ 522	$ 281