Loans Credit Quality Indicators (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	$ 593,097	$ 586,452	$ 547,581
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	2,647	0	5,948
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	32,861	34,211	28,938
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	0	789	807
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	1,646,823	1,570,571	1,472,304
Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	4,880	4,192	2,284
Commercial | Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	131,886	129,584	110,911
Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	123	0	5,948
Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	6,322	7,306	2,023
Commercial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	0	0	0
Commercial Real Estate Portfolio Segment | Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	461,211	456,868	436,670
Commercial Real Estate Portfolio Segment | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	2,524	0	0
Commercial Real Estate Portfolio Segment | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	26,539	26,905	26,915
Commercial Real Estate Portfolio Segment | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	0	789	807
Consumer Loans Financing | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	778,567	718,708	661,449
Consumer Loans Financing | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	457	802	459
Residential | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	868,256	851,863	810,855
Residential | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	$ 4,423	$ 3,390	$ 1,825