Derivative Instruments (Change In Fair Value Of Derivative Instruments) (Details) - Non-hedging interest rate derivatives: - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Other Assets | Other Income | Customer Back-to-Back Swap Program
Derivatives, Fair Value [Line Items]
Change in Fair Value Non-Hedging Interest Rate Derivatives:	$ 15,448	$ 4,854	$ 18,524	$ (18,140)
Other Liabilities | Other Income | Customer Back-to-Back Swap Program
Derivatives, Fair Value [Line Items]
Change in Fair Value Non-Hedging Interest Rate Derivatives:	(15,448)	(4,854)	(18,524)	18,140
Other Liabilities | Other Expense
Derivatives, Fair Value [Line Items]
Change in Fair Value Non-Hedging Interest Rate Derivatives:	$ 311	$ (185)	$ 888	$ 352