Loans Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 586,452	$ 542,323
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	1,518
Substandard
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	34,211	28,849
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	789	807
Performing
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	1,570,571	1,373,752
Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	4,192	3,727
Commercial | Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	129,584	124,961
Commercial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	1,341
Commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	7,306	2,947
Commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	0
Commercial Real Estate | Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	456,868	417,362
Commercial Real Estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	0	177
Commercial Real Estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	26,905	25,902
Commercial Real Estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	789	807
Other Consumer | Performing
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	718,708	602,168
Other Consumer | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	802	659
Residential Portfolio Segment | Performing
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	851,863	771,584
Residential Portfolio Segment | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Net	$ 3,390	$ 3,068