COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Unused lines of credit-Fixed
COMMITMENTS AND CONTINGENCIES
Other commitment	$ 73,975	$ 78,506
Standby letters of credit-Fixed
COMMITMENTS AND CONTINGENCIES
Other commitment	3,540	1,933
Commitments to make loans to sell-Fixed
COMMITMENTS AND CONTINGENCIES
Other commitment	113,746	370,512
Commitments to make loans-Fixed
COMMITMENTS AND CONTINGENCIES
Other commitment	40,804	24,225
Unused lines of credit-Variable
COMMITMENTS AND CONTINGENCIES
Other commitment	418,045	360,883
Standby letters of credit-Variable
COMMITMENTS AND CONTINGENCIES
Other commitment	20,940	17,524
Commitments to make loans-Variable
COMMITMENTS AND CONTINGENCIES
Other commitment	$ 15,236	$ 25,316