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Commitments and Contingent Liabilities (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Commitments to extend credit    
Loss Contingencies [Line Items]    
Amount of commitment $ 237.7 $ 195.5
Standby letters of Credit    
Loss Contingencies [Line Items]    
Amount of commitment $ 13.7 $ 14.7