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INCOME TAXES - Reconciliation of income taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Effective Income Tax Rate Reconciliation, Amount [Abstract]    
Income tax expense computed at 21% statutory rate $ 5,729 $ 6,943
Permanent Differences 169 (57)
State taxes, net of federal expense 1,018 1,150
LIHTC investment tax credit (386) (36)
LIHTC investment proportional amortization 539  
Valuation allowance   372
Other, net (399) 157
Income tax expense $ 6,670 $ 8,529
Effective income tax rate (as a percent) 21.00% 21.00%