Loans Loan Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 454,261	$ 403,696
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	5,971	6,160
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	27,294	29,767
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0
Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	1,082,595	968,753
Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	3,831	4,892
Commercial [Member] | Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	93,607	85,949
Commercial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	1,070	2,442
Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	7,910	11,120
Commercial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0
Commercial Real Estate [Member] | Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	360,654	317,747
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	4,901	3,718
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	19,384	18,647
Commercial Real Estate [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0
Other Consumer [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	464,074	436,626
Other Consumer [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	449	415
Residential Portfolio Segment [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	618,521	532,127
Residential Portfolio Segment [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 3,382	$ 4,477