Loans and Allowance for Credit Losses (Impaired Financing Receivables by Loan Class) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Impaired Nonaccrual Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	$ 2,207
Recorded investment with no allowance	1,908
Quarter-to-date average recorded investment	2,780
Year-to-date average recorded investment	2,944
Impaired Accruing Restructured Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	4,539
Recorded investment with no allowance	2,866
Recorded investment with an allowance	1,539
Related allowance	127
Quarter-to-date average recorded investment	4,938
Year-to-date average recorded investment	5,681
Interest recorded investment	94
Other Impaired Accruing Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	1,841
Recorded investment with no allowance	1,841
Quarter-to-date average recorded investment	794
Year-to-date average recorded investment	644
Interest recorded investment	12
Impaired Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	8,587
Recorded investment with no allowance	6,615
Recorded investment with an allowance	1,539
Related allowance	127
Quarter-to-date average recorded investment	8,512
Year-to-date average recorded investment	9,269
Interest recorded investment	106
Residential real estate | Impaired Nonaccrual Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	1,363
Recorded investment with no allowance	1,259
Quarter-to-date average recorded investment	1,487
Year-to-date average recorded investment	1,482
Residential real estate | Impaired Accruing Restructured Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	2,849
Recorded investment with no allowance	1,176
Recorded investment with an allowance	1,539
Related allowance	127
Quarter-to-date average recorded investment	2,773
Year-to-date average recorded investment	3,221
Interest recorded investment	56
Residential real estate | Other Impaired Accruing Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	1,107
Recorded investment with no allowance	1,107
Quarter-to-date average recorded investment	5
Year-to-date average recorded investment	17
Interest recorded investment	4
Residential real estate | Impaired Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	5,319
Recorded investment with no allowance	3,542
Recorded investment with an allowance	1,539
Related allowance	127
Quarter-to-date average recorded investment	4,265
Year-to-date average recorded investment	4,720
Interest recorded investment	60
Commercial real estate | Impaired Nonaccrual Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	159
Recorded investment with no allowance	150
Quarter-to-date average recorded investment	740
Year-to-date average recorded investment	823
Commercial real estate | Impaired Accruing Restructured Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	1,680
Recorded investment with no allowance	1,680
Quarter-to-date average recorded investment	2,147
Year-to-date average recorded investment	2,431
Interest recorded investment	38
Commercial real estate | Other Impaired Accruing Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	710
Recorded investment with no allowance	710
Quarter-to-date average recorded investment	524
Year-to-date average recorded investment	471
Interest recorded investment	4
Commercial real estate | Impaired Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	2,549
Recorded investment with no allowance	2,540
Quarter-to-date average recorded investment	3,411
Year-to-date average recorded investment	3,725
Interest recorded investment	42
Commercial | Impaired Nonaccrual Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	359
Recorded investment with no allowance	174
Quarter-to-date average recorded investment	208
Year-to-date average recorded investment	265
Commercial | Other Impaired Accruing Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Year-to-date average recorded investment	4
Interest recorded investment	1
Commercial | Impaired Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	359
Recorded investment with no allowance	174
Quarter-to-date average recorded investment	208
Year-to-date average recorded investment	269
Interest recorded investment	1
Consumer | Impaired Nonaccrual Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	29
Recorded investment with no allowance	28
Quarter-to-date average recorded investment	31
Year-to-date average recorded investment	52
Consumer | Impaired Accruing Restructured Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Year-to-date average recorded investment	9
Consumer | Other Impaired Accruing Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Year-to-date average recorded investment	19
Consumer | Impaired Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	29
Recorded investment with no allowance	28
Quarter-to-date average recorded investment	31
Year-to-date average recorded investment	80
Construction | Commercial and Residential Real Estate | Impaired Nonaccrual Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	297
Recorded investment with no allowance	297
Quarter-to-date average recorded investment	314
Year-to-date average recorded investment	322
Construction | Commercial and Residential Real Estate | Impaired Accruing Restructured Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	10
Recorded investment with no allowance	10
Quarter-to-date average recorded investment	18
Year-to-date average recorded investment	20
Construction | Commercial and Residential Real Estate | Other Impaired Accruing Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	24
Recorded investment with no allowance	24
Quarter-to-date average recorded investment	265
Year-to-date average recorded investment	133
Interest recorded investment	3
Construction | Commercial and Residential Real Estate | Impaired Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	331
Recorded investment with no allowance	331
Quarter-to-date average recorded investment	597
Year-to-date average recorded investment	475
Interest recorded investment	$ 3