Borrowed Funds (Summary Of Short-Term Borrowings) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Beginning Balance	$ 140,146		$ 140,146	[1]
Short-term FHLB Advances [Member]
Debt Instrument [Line Items]
Beginning Balance	140,000	$ 140,000	140,000
Average balance outstanding for the period	140,084	140,000	140,000
Maximum balance outstanding at any month end during period	$ 140,000	$ 140,000	$ 140,000
Weighted average interest rate for the period	0.41%	0.37%	0.33%
Weighted average interest rate for balances outstanding	0.47%	0.38%	0.26%

[1] Derived from audited consolidated financial statements