COMMITMENTS AND CONTINGENCIES AND FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
COMMITMENTS AND CONTINGENCIES AND FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK
Commitments to extend credit, variable interest rate	$ 603,620	$ 652,611
Commitments to extend credit, fixed interest rate	145,160	141,439
Total	748,780	794,050
Standby letters of credit	$ 28,440	$ 23,547