Loans Credit Quality Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 467,928	$ 454,261	$ 403,187
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	16,092	5,971	5,424
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	25,902	27,294	30,586
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	1,109,080	1,082,595	990,497
Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	3,726	3,831	5,100
Commercial [Member] | Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	97,189	93,607	85,597
Commercial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	994	1,070	2,575
Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	7,894	7,910	11,738
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	370,739	360,654	317,590
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	15,098	4,901	2,849
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	18,008	19,384	18,848
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	488,950	464,074	440,565
Consumer Loans Financing [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	559	449	337
Residential [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	620,130	618,521	549,932
Residential [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 3,167	$ 3,382	$ 4,763