Loans Categories and Past Due Loans (Details) $ in Thousands	Dec. 31, 2020 USD ($) loan_portfolio	Dec. 31, 2019 USD ($)
Financing Receivable, Past Due [Line Items]
Loans receivable, held-for-sale	$ 11,085	$ 150
Total Loans Past Due	13,783	13,606
Current Loans	2,581,247	2,372,514
Total Loans	2,595,030	2,386,120
Loans 90 or More Days Past Due and Still Accruing Interest	228	253
Nonaccrual Loans	$ 6,033	4,005
Financing receivable, number of loan portfolios | loan_portfolio	4
Loans Past Due 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	$ 5,339	5,972
Loans Past Due 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	4,105	5,035
Loans Past Due 90 or More Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	4,339	2,599
Commercial
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	293	213
Current Loans	240,261	150,447
Total Loans	240,554	150,660
Loans 90 or More Days Past Due and Still Accruing Interest	0	0
Nonaccrual Loans	78	81
Commercial | Loans Past Due 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	102	150
Commercial | Loans Past Due 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	113	42
Commercial | Loans Past Due 90 or More Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	78	21
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	1,658	592
Current Loans	570,129	509,949
Total Loans	571,787	510,541
Loans 90 or More Days Past Due and Still Accruing Interest	184	0
Nonaccrual Loans	1,475	326
Commercial Real Estate | Loans Past Due 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	0
Commercial Real Estate | Loans Past Due 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	0	266
Commercial Real Estate | Loans Past Due 90 or More Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	1,658	326
Other Consumer
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	9,068	8,815
Current Loans	850,700	802,383
Total Loans	859,768	811,198
Loans 90 or More Days Past Due and Still Accruing Interest	0	0
Nonaccrual Loans	1,470	663
Other Consumer | Loans Past Due 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	4,976	5,670
Other Consumer | Loans Past Due 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	2,713	2,700
Other Consumer | Loans Past Due 90 or More Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	1,379	445
Residential Portfolio Segment
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	2,764	3,986
Current Loans	920,157	909,735
Total Loans	922,921	913,721
Loans 90 or More Days Past Due and Still Accruing Interest	44	253
Nonaccrual Loans	3,010	2,935
Residential Portfolio Segment | Loans Past Due 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	261	152
Residential Portfolio Segment | Loans Past Due 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	1,279	2,027
Residential Portfolio Segment | Loans Past Due 90 or More Days
Financing Receivable, Past Due [Line Items]
Total Loans Past Due	1,224	$ 1,807
Commercial Portfolio Segment | Paycheck Protection Program, CARES Act
Financing Receivable, Past Due [Line Items]
Total Loans	$ 142,700