Loans Loan Categories and Past Due Loans(Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans Past Due 30 - 59 Days $ 5,651 $ 5,205
Loans Past Due 60 - 89 Days 3,203 2,881
Loans Past Due 90 or More Days 4,151 5,382
Total Loans Past Due 13,005 13,468
Current Loans 1,560,947 1,399,800
Total Loans 1,573,952 1,413,268
Loans 90 or More Days Past Due and Still Accruing Interest 187 537
Nonaccrual Loans 6,433 6,899
Commercial [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans Past Due 30 - 59 Days 98 124
Loans Past Due 60 - 89 Days 186 154
Loans Past Due 90 or More Days 203 345
Total Loans Past Due 487 623
Current Loans 102,100 98,888
Total Loans 102,587 99,511
Loans 90 or More Days Past Due and Still Accruing Interest 0 0
Nonaccrual Loans 387 473
Commercial Real Estate [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans Past Due 30 - 59 Days 0 432
Loans Past Due 60 - 89 Days 0 7
Loans Past Due 90 or More Days 1,469 1,832
Total Loans Past Due 1,469 2,271
Current Loans 383,470 337,841
Total Loans 384,939 340,112
Loans 90 or More Days Past Due and Still Accruing Interest 0 0
Nonaccrual Loans 2,401 2,071
Other Consumer [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans Past Due 30 - 59 Days 4,598 4,167
Loans Past Due 60 - 89 Days 1,647 1,225
Loans Past Due 90 or More Days 295 206
Total Loans Past Due 6,540 5,598
Current Loans 457,983 431,443
Total Loans 464,523 437,041
Loans 90 or More Days Past Due and Still Accruing Interest 0 0
Nonaccrual Loans 450 415
Residential Portfolio Segment [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans Past Due 30 - 59 Days 955 482
Loans Past Due 60 - 89 Days 1,370 1,495
Loans Past Due 90 or More Days 2,184 2,999
Total Loans Past Due 4,509 4,976
Current Loans 617,394 531,628
Total Loans 621,903 536,604
Loans 90 or More Days Past Due and Still Accruing Interest 187 537
Nonaccrual Loans $ 3,195 $ 3,940