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MORTGAGE OPERATIONS (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
MORTGAGE OPERATIONS [Abstract]          
Real estate mortgage loans serviced $ 204,128   $ 204,128   $ 211,845
Key assumptions used in measuring the fair value of mortgage servicing rights [Abstract]          
Constant prepayment rate     12.73%   8.58%
Discount rate     10.01%   10.01%
Weighted average life     5 years 3 months 22 days   6 years 9 months 14 days
Mortgage servicing rights [Roll Forward]          
Beginning balance     $ 1,579    
Additions     99    
Reductions     (218)    
Ending balance 1,460   1,460   $ 1,579
Valuation allowance [Roll Forward]          
Beginning balance     0    
Additions     0    
Reductions     0    
Ending balance 0   0   0
Mortgage servicing rights, net of valuation allowance [Roll Forward]          
Beginning balance     1,579    
Additions     99    
Reductions     (218)    
Ending balance 1,460   1,460    
Fair value of mortgage servicing rights asset 1,509   1,509   $ 2,091
Contractually specified servicing fees $ 129 $ 136 $ 393 $ 412