Derivative Instruments (Schedule Of Fair Values Of Derivative Instruments) (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Other assets	[1]	$ 116,876	$ 60,492
Other liabilities	[1]	$ (37,899)	(54,984)
Derivative Instruments, Statement of Financial Position [Extensible Enumeration]		Other assets
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Other assets		$ 78,960	33,371
Other liabilities		0	0
Designated as Hedging Instrument [Member] | Interest Rate Floor [Member]
Derivatives, Fair Value [Line Items]
Other assets		78,960	33,371
Other liabilities		0	0
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Other assets		37,916	27,121
Other liabilities		(37,899)	(54,984)
Not Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Other assets	[2]	35,816	23,894
Other liabilities	[2]	(35,816)	(51,742)
Not Designated as Hedging Instrument [Member] | Interest Rate Caps [Member]
Derivatives, Fair Value [Line Items]
Other assets		1,391	2,705
Other liabilities		(1,391)	(2,705)
Not Designated as Hedging Instrument [Member] | Credit Risk Participation Agreements [Member]
Derivatives, Fair Value [Line Items]
Other assets		77	34
Other liabilities		(194)	(119)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Other assets		534	488
Other liabilities		(479)	(418)
Not Designated as Hedging Instrument [Member] | Mortgage Loan Commitments [Member]
Derivatives, Fair Value [Line Items]
Other assets		89	0
Other liabilities		(1)	0
Not Designated as Hedging Instrument [Member] | Mortgage Loan Forward Sale Contracts [Member]
Derivatives, Fair Value [Line Items]
Other assets		8	0
Other liabilities		0	0
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Other assets		1	0
Other liabilities		$ (18)	$ 0

[1] *The fair value of each class of derivative is shown in Note 19.

[2] $2,647,310