Loans Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 442,966	$ 403,696	$ 398,627
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	6,327	6,160	12,001
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	27,268	29,767	26,826
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	1,054,827	968,753	939,009
Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	5,537	4,892	4,977
Commercial [Member] | Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	92,896	85,949	82,232
Commercial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	1,157	2,442	4,969
Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	8,836	11,120	9,645
Commercial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Commercial Real Estate Portfolio Segment [Member] | Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	350,070	317,747	316,395
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	5,170	3,718	7,032
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	18,432	18,647	17,181
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0	0
Consumer Loans Financing [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	458,479	436,626	426,528
Consumer Loans Financing [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	441	415	438
Residential [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	596,348	532,127	512,481
Residential [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 5,096	$ 4,477	$ 4,539