COMMITMENTS AND CONTINGENCIES AND FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
COMMITMENTS AND CONTINGENCIES AND FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK
Commitments to extend credit, variable interest rate	$ 692,538	$ 652,611
Commitments to extend credit, fixed interest rate	108,473	141,439
Total	801,011	794,050
Standby letters of credit	$ 31,143	$ 23,547