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MORTGAGE OPERATIONS (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
MORTGAGE OPERATIONS [Abstract]      
Real estate mortgage loans serviced $ 206,758   $ 208,169
Key assumptions used in measuring the fair value of mortgage servicing rights [Abstract]      
Constant prepayment rate 10.16%   15.73%
Discount rate 9.50%   9.50%
Weighted average life 6 years 3 months 21 days   4 years 11 months 12 days
Mortgage servicing rights [Roll Forward]      
Beginning balance $ 1,807    
Additions 60    
Reductions (82)    
Ending balance 1,785   $ 1,807
Valuation allowance [Roll Forward]      
Beginning balance (276)    
Additions 0    
Reductions 276    
Ending balance 0   (276)
Mortgage servicing rights, net of valuation allowance [Roll Forward]      
Beginning balance 1,531    
Additions 60    
Reductions 194    
Ending balance 1,785    
Fair value of mortgage servicing rights assets 1,885   $ 1,531
Contractually specified servicing fees $ 130 $ 134