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Derivative Financial Instruments and Repurchase Agreements (Details Textual) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Derivative Financial Instruments and Repurchase Agreements (Textual)    
Notional amount of customer-facing swaps $ 60,700 $ 49,900
Cash as collateral 2,700  
Mortgage-backed securities $ 2,600 $ 14,100
Securities maturity, description These securities have various maturity dates beyond 2020.