Loans And The Allowance For Credit Losses (Recorded Investment In Loans Past Due) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accruing Loans	$ 27,355	$ 22,339	$ 26,817	$ 17,394
Loans	1,704,400	1,672,369
Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	1,665,388	1,643,519
30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	11,130	3,185
60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	527	891
90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance		2,435
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	222,845
Non-accruing Loans	1,876	2,625	4,480	4,919
Loans	222,845	250,095
Commercial And Industrial [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	220,939	246,412
Commercial And Industrial [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance		235
Commercial And Industrial [Member] | 60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	30	684
Commercial And Industrial [Member] | 90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance		139
Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	443,525
Commercial Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	957,086
Home Equities [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	80,161
Non-accruing Loans	385	563	515	755
Consumer And Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	783
Loans	783	657
Consumer And Other Loans [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	774	652
Consumer And Other Loans [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	8	3
Consumer And Other Loans [Member] | 60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	1	1
Consumer And Other Loans [Member] | 90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance		1
Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accruing Loans	12,613	6,648	9,197	5,758
Total Real Estate Loans [Member] | Home Equities [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accruing Loans	385	563
Loans	80,161	80,948
Total Real Estate Loans [Member] | Home Equities [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	77,666	79,320
Total Real Estate Loans [Member] | Home Equities [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	1,614	759
Total Real Estate Loans [Member] | Home Equities [Member] | 60-89 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	496	206
Total Real Estate Loans [Member] | Home Equities [Member] | 90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance		100
Mortgages [Member] | Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accruing Loans	4,300	3,738	3,698	3,020
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accruing Loans	4,300	3,738
Loans	440,778	439,708
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	435,096	434,393
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	1,382	1,105
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member] | 90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance		472
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accruing Loans	12,613	6,648
Loans	830,299	779,677
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	814,026	771,871
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	3,660	1,083
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | 90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance		75
Construction [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accruing Loans	8,181	8,765	$ 8,927	$ 2,942
Construction [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	2,747	3,502
Construction [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	2,747	3,502
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accruing Loans	8,181	8,765
Loans	126,787	117,782
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	114,140	107,369
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | 30-59 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance	$ 4,466
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member] | 90+ Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Balance		$ 1,648