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Allowance for Loan Losses (Loan Portfolio Summarized by Categories) (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio $ 582,633 $ 549,455
Commercial [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 155,459 139,126
Commercial loans secured by real estate [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 427,174 410,329
Pass [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 571,821 538,860
Pass [Member] | Commercial [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 150,704 132,665
Pass [Member] | Commercial loans secured by real estate [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 421,117 406,195
Special Mention [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 3,385 781
Special Mention [Member] | Commercial [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 758 161
Special Mention [Member] | Commercial loans secured by real estate [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 2,627 620
Substandard [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 7,041 9,402
Substandard [Member] | Commercial [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 3,866 6,164
Substandard [Member] | Commercial loans secured by real estate [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 3,175 3,238
Doubtful [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 386 412
Doubtful [Member] | Commercial [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio 131 136
Doubtful [Member] | Commercial loans secured by real estate [Member]    
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system    
Loan portfolio $ 255 $ 276