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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, 2019
Dec. 31, 2018
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fixed Rate $ 47,692 $ 42,088
Variable Rate 196,104 130,547
Undrawn lines of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fixed Rate 11,378 7,737
Variable Rate 196,104 130,547
Letters of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fixed Rate 36,314 34,351
Variable Rate $ 0 $ 0