Loans And The Allowance For Credit Losses (Amortized Costs, At The Class Level, For Nonaccrual Loans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2023	Jan. 01, 2022
Financing Receivable, Impaired [Line Items]
Amortized Cost With Allowance	$ 7,909	$ 1,531
Amortized Cost Without Allowance	19,315	20,808
Non-accruing Loans	27,224	22,339	$ 22,339	$ 17,394
Interest Income Recognized	296	735
Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Amortized Cost With Allowance	73
Amortized Cost Without Allowance	1,766	2,625
Non-accruing Loans	1,839	2,625	2,625	4,919
Interest Income Recognized	17	82
Residential Mortgages [Member] | Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Amortized Cost With Allowance		57
Amortized Cost Without Allowance	4,602	3,681
Non-accruing Loans	4,602	3,738	3,738	3,020
Interest Income Recognized	49	57
Commercial Real Estate Mortgages [Member] | Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Non-accruing Loans	19,000	6,648
Commercial Real Estate Mortgages [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Amortized Cost With Allowance	1,268	1,340
Amortized Cost Without Allowance		7,425
Non-accruing Loans	1,268	8,765	8,765	2,942
Interest Income Recognized		282
Home Equities [Member]
Financing Receivable, Impaired [Line Items]
Amortized Cost With Allowance		134
Amortized Cost Without Allowance	515	429
Non-accruing Loans	515	563	563	755
Interest Income Recognized	11	26
Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Amortized Cost With Allowance	6,568
Amortized Cost Without Allowance	12,432	6,648
Non-accruing Loans	19,000	6,648	$ 6,648	$ 5,758
Interest Income Recognized	219	288
Total Real Estate Loans [Member] | Home Equities [Member]
Financing Receivable, Impaired [Line Items]
Non-accruing Loans	$ 515	$ 563