COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Commitments and contingencies
Contract amount of commitments and contingencies	$ 1,591,358	$ 1,544,138
Commitments to extend credit
Commitments and contingencies
Contract amount of commitments and contingencies	1,532,806	1,486,791
Standby letters of credit
Commitments and contingencies
Contract amount of commitments and contingencies	$ 58,552	$ 57,347