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Commitments and Contingent Liabilities (Details) - USD ($)
$ in Millions
Sep. 30, 2015
Dec. 31, 2014
Commitments to extend credit [Member]    
Loss Contingencies [Line Items]    
Amount of commitment $ 193.6 $ 188.0
Standby letters of credit [Member]    
Loss Contingencies [Line Items]    
Amount of commitment $ 7.6 $ 7.2