Derivatives (Summary Of Types Of Derivatives, Separately By Assets And Liabilities And Fair Value Of Derivatives) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 114,763	$ 38,085
Derivative Liability	312,489	261,091
Interest rate lock commitments
Derivatives, Fair Value [Line Items]
Asset Derivatives	16
Derivative Liability		137
Interest rate forward sales commitments
Derivatives, Fair Value [Line Items]
Asset Derivatives	74	9
Derivative Liability	188	535
Interest rate swaps
Derivatives, Fair Value [Line Items]
Asset Derivatives	114,347	33,874
Derivative Liability	310,985	260,064
Interest rate contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	114,347
Derivative Liability	310,985
Interest rate contracts | Interest rate lock commitments
Derivatives, Fair Value [Line Items]
Asset Derivatives	16	0
Derivative Liability	$ 0	$ 137
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Interest rate contracts | Future
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 0	$ 3,745
Derivative Liability	$ 1,134	$ 0
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Interest rate contracts | Interest rate forward sales commitments
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 74	$ 9
Derivative Liability	$ 188	$ 535
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Interest rate contracts | Interest rate swaps
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 114,347	$ 33,874
Derivative Liability	$ 310,985	$ 260,064
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Foreign currency derivatives
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 326	$ 457
Derivative Liability	$ 182	$ 355
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities