OFF BALANCE SHEET RISKS, COMMITMENTS AND CONTINGENT LIABILITIES (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Commitments and letters of credit
Loan commitment, line credit	$ 724,883	$ 694,178
Unused warehouse lines of credit
Commitments and letters of credit
Loan commitment, line credit	139,345	208,069
Unused home equity lines of credit
Commitments and letters of credit
Loan commitment, line credit	253,792	240,372
Unused loan commitments - other
Commitments and letters of credit
Loan commitment, line credit	261,964	216,806
Loan Purchase Commitments [Member]
Commitments and letters of credit
Loan commitment, line credit	56,837	15,798
Standby letters of credit
Commitments and letters of credit
Loan commitment, line credit	12,945	12,383
FHLB letters of credit
Commitments and letters of credit
Loan commitment, line credit		$ 750