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Allowance for Loan Losses (Details 4) - USD ($)
$ in Thousands
Mar. 31, 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 $ 606,780 $ 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 181,515 181,066
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 425,265 421,637
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 594,469 590,947
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 178,520 174,616
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 415,949 416,331
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 8,557 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 793 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 7,764 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 3,488 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 1,955 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 1,533 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 266 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 247 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 $ 19 $ 18