FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Commitments to extend credit
FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK
Financial instruments whose contract amounts represent credit risk	$ 801,835	$ 720,255
Financial instruments whose contract amounts exceed the amount of credit risk	720,255
Standby letters of credit and financial guarantees written
FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK
Financial instruments whose contract amounts represent credit risk	13,434	18,797
Financial instruments whose contract amounts exceed the amount of credit risk	18,797
Interest rate options
FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK
Financial instruments whose contract amounts exceed the amount of credit risk	24,009	44,266
Forward interest rate contracts
FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK
Financial instruments whose contract amounts exceed the amount of credit risk	$ 9,973	$ 23,919