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Basis of Presentation and Nature of Operations (Details)
 3 Months Ended
Nov. 22, 2016
director
Mar. 31, 2017
USD ($)
bank
Dec. 31, 2016
USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Number of retail banking office locations | bank   22  
New Windsor      
Business Acquisition [Line Items]      
Number of directors joining boards | director 2    
Pro forma total assets   $ 1,510,000,000  
Pro forma total deposits   1,250,000,000  
Pro forma loans   1,150,000,000  
Merger related expenses   $ 162,000 $ 472,000