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SERVICING RIGHTS (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Changes in mortgage servicing rights capitalized and amortized, along with the aggregate activity in related valuation allowances    
Valuation allowance $ 0  
Commercial loans    
Commercial Loans    
Commercial Loans 44,000,000 $ 44,000,000
Servicing rights $ 80,000 110,000
Mortgage loans    
Mortgage Loans    
Annual constant prepayment speed (as a percent) 8.87%  
Discount rate (as a percent) 10.40%  
Changes in mortgage servicing rights capitalized and amortized, along with the aggregate activity in related valuation allowances    
Balance at beginning of period $ 1,033,000 1,573,000
Additions from loans sold with servicing retained 18,000  
Acquired MSRs 539,000  
Amortization (446,000) (540,000)
Balance at end of period 1,144,000 1,033,000
Balance of loan servicing portfolio $ 293,771,000 $ 198,524,000
Mortgage servicing rights as % of portfolio 0.34% 0.52%
Fair value of servicing rights $ 2,898,000 $ 1,767,000