Derivative Instruments (Schedule Of Fair Values Of Derivative Instruments) (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative Asset	[1]	$ 13,130	$ 41,842
Derivative Liabilities	[1]	(18,382)	(12,101)
Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative Asset		11,236	40,752
Derivative Liabilities		(17,075)	(11,606)
Interest rate caps
Derivatives, Fair Value [Line Items]
Derivative Asset		1,137	147
Derivative Liabilities		(1,137)	(147)
Credit risk participation agreements
Derivatives, Fair Value [Line Items]
Derivative Asset		68	84
Derivative Liabilities		(126)	(277)
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative Asset		28	77
Derivative Liabilities		(11)	(45)
Mortgage loan commitments
Derivatives, Fair Value [Line Items]
Derivative Asset		302	764
Derivative Liabilities		(23)	0
Mortgage loan forward sale contracts
Derivatives, Fair Value [Line Items]
Derivative Asset		4	5
Derivative Liabilities		0	(1)
Forward TBA contracts
Derivatives, Fair Value [Line Items]
Derivative Asset		355	13
Derivative Liabilities		$ (10)	$ (25)

[1] * The fair value of each class of derivative is shown in Note 11.