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