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FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK (Outstanding following off-balance-sheet financial instruments) (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fixed Rate $ 58,780 $ 64,947
Variable Rate 267,775 193,767
Undrawn lines of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fixed Rate 18,944 17,204
Variable Rate 267,775 193,767
Letters of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fixed Rate 39,836 47,743
Variable Rate $ 0 $ 0