Loans and Allowance for Credit Losses (Impaired Financing Receivables by Loan Class) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Impaired Nonaccrual Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	$ 2,553	$ 6,679
Recorded investment with no allowance	1,922	5,388
Recorded investment with an allowance		67
Related allowance		67
Year-to-date average recorded investment	3,765	8,963
Impaired Accruing Restructured Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	5,796	6,997
Recorded investment with no allowance	2,851	5,130
Recorded investment with an allowance	2,816	1,867
Related allowance	173	146
Year-to-date average recorded investment	6,132	7,306
Interest recorded investment	236	267
Other Impaired Accruing Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	508	804
Recorded investment with no allowance	508	804
Year-to-date average recorded investment	948	1,183
Interest recorded investment	38	7
Impaired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	8,857	14,480
Recorded investment with no allowance	5,281	11,322
Recorded investment with an allowance	2,816	1,934
Related allowance	173	213
Year-to-date average recorded investment	10,845	17,452
Interest recorded investment	274	274
Residential Portfolio Segment [Member] | Impaired Nonaccrual Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	882	1,665
Recorded investment with no allowance	803	1,585
Year-to-date average recorded investment	1,095	2,648
Residential Portfolio Segment [Member] | Impaired Accruing Restructured Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	2,965	3,845
Recorded investment with no allowance	475	2,617
Recorded investment with an allowance	2,361	1,228
Related allowance	172	135
Year-to-date average recorded investment	3,150	3,920
Interest recorded investment	146	160
Residential Portfolio Segment [Member] | Other Impaired Accruing Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	78	292
Recorded investment with no allowance	78	292
Year-to-date average recorded investment	465	362
Interest recorded investment	21	2
Residential Portfolio Segment [Member] | Impaired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	3,925	5,802
Recorded investment with no allowance	1,356	4,494
Recorded investment with an allowance	2,361	1,228
Related allowance	172	135
Year-to-date average recorded investment	4,710	6,930
Interest recorded investment	167	162
Commercial Real Estate Portfolio Segment [Member] | Impaired Nonaccrual Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	994	4,288
Recorded investment with no allowance	606	3,220
Recorded investment with an allowance		67
Related allowance		67
Year-to-date average recorded investment	2,122	5,669
Commercial Real Estate Portfolio Segment [Member] | Impaired Accruing Restructured Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	2,807	3,118
Recorded investment with no allowance	2,352	2,479
Recorded investment with an allowance	455	639
Related allowance	1	11
Year-to-date average recorded investment	2,952	3,349
Interest recorded investment	87	104
Commercial Real Estate Portfolio Segment [Member] | Other Impaired Accruing Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	420	512
Recorded investment with no allowance	420	512
Year-to-date average recorded investment	470	774
Interest recorded investment	17	5
Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	4,221	7,918
Recorded investment with no allowance	3,378	6,211
Recorded investment with an allowance	455	706
Related allowance	1	78
Year-to-date average recorded investment	5,544	9,792
Interest recorded investment	104	109
Commercial Portfolio Segment [Member] | Impaired Nonaccrual Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	380	401
Recorded investment with no allowance	216	258
Year-to-date average recorded investment	242	390
Commercial Portfolio Segment [Member] | Other Impaired Accruing Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	10
Recorded investment with no allowance	10
Year-to-date average recorded investment	13	13
Commercial Portfolio Segment [Member] | Impaired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	390	401
Recorded investment with no allowance	226	258
Year-to-date average recorded investment	255	403
Consumer Portfolio Segment [Member] | Impaired Nonaccrual Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance		28
Recorded investment with no allowance		28
Year-to-date average recorded investment	9	9
Consumer Portfolio Segment [Member] | Other Impaired Accruing Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Year-to-date average recorded investment		9
Consumer Portfolio Segment [Member] | Impaired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance		28
Recorded investment with no allowance		28
Year-to-date average recorded investment	9	18
Construction Loans [Member] | Commercial and Residential Real Estate Portfolio Segment [Member] | Impaired Nonaccrual Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	297	297
Recorded investment with no allowance	297	297
Year-to-date average recorded investment	297	247
Construction Loans [Member] | Commercial and Residential Real Estate Portfolio Segment [Member] | Impaired Accruing Restructured Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	24	34
Recorded investment with no allowance	24	34
Year-to-date average recorded investment	30	37
Interest recorded investment	3	3
Construction Loans [Member] | Commercial and Residential Real Estate Portfolio Segment [Member] | Other Impaired Accruing Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Year-to-date average recorded investment		25
Construction Loans [Member] | Commercial and Residential Real Estate Portfolio Segment [Member] | Impaired Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	321	331
Recorded investment with no allowance	321	331
Year-to-date average recorded investment	327	309
Interest recorded investment	$ 3	$ 3