ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY - Troubled Debt Restructuring (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY
Accruing troubled debt restructured loans	$ 4,976
Nonaccrual troubled debt restructured loans	6,443
Total troubled debt restructured loans	$ 11,419
Accruing troubled debt restructured loans		$ 5,121
Nonaccrual troubled debt restructured loans		6,218
Total troubled debt restructured loans		$ 11,339