Loans and Allowance for Loan Losses (Details 1) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Jun. 30, 2011
Age Analysis of Past Due Loans      
30-59 Days Past Due $ 3,531 $ 3,626  
60-89 Days Past Due 1,687 2,489  
Greater than 90 Days 21,940 25,200  
Total Past Due 27,158 31,315  
Current 840,301 811,773  
Total Loans 867,459 843,088 830,312
Recorded Investment greater than 90 Days and Accruing        
Commercial Real Estate [Member]
      
Age Analysis of Past Due Loans      
30-59 Days Past Due 701 290  
60-89 Days Past Due 425 804  
Greater than 90 Days 16,435 19,023  
Total Past Due 17,561 20,117  
Current 380,690 361,735  
Total Loans 398,251 381,852 386,891
Recorded Investment greater than 90 Days and Accruing        
Commercial [Member]
      
Age Analysis of Past Due Loans      
30-59 Days Past Due 404 54  
60-89 Days Past Due 123 249  
Greater than 90 Days 491 805  
Total Past Due 1,018 1,108  
Current 78,443 75,462  
Total Loans 79,461 76,570 72,679
Recorded Investment greater than 90 Days and Accruing        
Residential Real Estate [Member]
      
Age Analysis of Past Due Loans      
30-59 Days Past Due 506 545  
60-89 Days Past Due 608 1,172  
Greater than 90 Days 3,579 3,554  
Total Past Due 4,693 5,271  
Current 60,141 59,253  
Total Loans 64,834 64,524 68,837
Recorded Investment greater than 90 Days and Accruing        
Home Equity Loans [Member]
      
Age Analysis of Past Due Loans      
30-59 Days Past Due 1,342 1,942  
60-89 Days Past Due 272 181  
Greater than 90 Days 1,386 1,666  
Total Past Due 3,000 3,789  
Current 123,568 123,169  
Total Loans 126,568 126,958 130,143
Recorded Investment greater than 90 Days and Accruing        
Indirect [Member]
      
Age Analysis of Past Due Loans      
30-59 Days Past Due 518 664  
60-89 Days Past Due 96 71  
Greater than 90 Days 5 124  
Total Past Due 619 859  
Current 184,273 179,230  
Total Loans 184,892 180,089 158,885
Recorded Investment greater than 90 Days and Accruing        
Consumer [Member]
      
Age Analysis of Past Due Loans      
30-59 Days Past Due 60 131  
60-89 Days Past Due 163 12  
Greater than 90 Days 44 28  
Total Past Due 267 171  
Current 13,186 12,924  
Total Loans 13,453 13,095 12,877
Recorded Investment greater than 90 Days and Accruing