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FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK (Outstanding following off-balance-sheet financial instruments) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fixed Rate $ 64,947 $ 42,088
Variable Rate 193,767 130,547
Undrawn lines of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fixed Rate 17,204 7,737
Variable Rate 193,767 130,547
Letters of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fixed Rate 47,743 34,351
Variable Rate $ 0 $ 0