Derivative Instruments (Schedule Of Fair Values Of Derivative Instruments) (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Other assets	[1]	$ 60,492	$ 41,842
Other liabilities	[1]	$ (54,984)	(12,101)
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other assets
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Other assets		$ 33,371	0
Other liabilities		0	0
Designated as Hedging Instrument [Member] | Interest Rate Floor [Member]
Derivatives, Fair Value [Line Items]
Other assets		33,371	0
Other liabilities		0	0
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Other assets		27,121	41,842
Other liabilities		(54,984)	(12,101)
Not Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Other assets	[2]	23,894	40,752
Other liabilities	[2]	(51,742)	(11,606)
Not Designated as Hedging Instrument [Member] | Interest Rate Caps [Member]
Derivatives, Fair Value [Line Items]
Other assets		2,705	147
Other liabilities		(2,705)	(147)
Not Designated as Hedging Instrument [Member] | Credit Risk Participation Agreements [Member]
Derivatives, Fair Value [Line Items]
Other assets		34	84
Other liabilities		(119)	(277)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contracts [Member]
Derivatives, Fair Value [Line Items]
Other assets		488	77
Other liabilities		(418)	(45)
Not Designated as Hedging Instrument [Member] | Mortgage Loan Commitments [Member]
Derivatives, Fair Value [Line Items]
Other assets		0	764
Other liabilities		0	0
Not Designated as Hedging Instrument [Member] | Mortgage Loan Forward Sale Contracts [Member]
Derivatives, Fair Value [Line Items]
Other assets		0	5
Other liabilities		0	(1)
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Other assets		0	13
Other liabilities		$ 0	$ (25)

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

[2] Certain collateral was posted to and from the Company's clearing party and has been applied to the fair values of the cleared swaps. As a result, these values are net of variation margin of $27.8 million and $587 thousand for interest rate swaps in an asset position, and $— million and $29.7 million for interest rate swaps in a liability position, at December 31, 2022 and 2021, respectively.