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DERIVATIVE FINANCIAL INSTRUMENTS - Derivative instrument assets and liabilities (Details) - Designated - Interest rate swap - Cash flow hedge - Other liabilities - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
DERIVATIVE FINANCIAL INSTRUMENTS    
Derivative financial liability fair value $ (1,572) $ (676)
Derivative financial liability notional amount $ 17,000 $ 17,000