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Derivative Financial Instruments (Fair Value) (Details) - Derivative designated as a cash flow hedge - Interest rate swap - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Derivatives, Fair Value [Line Items]    
Derivative, notional amount $ 18,703,000 $ 19,594,000
Other assets    
Derivatives, Fair Value [Line Items]    
Derivative asset, fair value $ 666,000 $ 13,000