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Allowance for Loan Losses (Details 4) - Commercial Portfolio Segment [Member] - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
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 $ 619,162 $ 602,703
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 181,251 181,066
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 437,911 421,637
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 607,149 590,947
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 178,536 174,616
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 428,613 416,331
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 7,683 4,911
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 90 1,811
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 7,593 3,100
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 3,807 5,506
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 2,118 3,318
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 1,689 2,188
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 523 1,339
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 507 1,321
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 $ 16 $ 18