Derivatives (Summary Of Types Of Derivatives, Separately By Assets And Liabilities And Fair Value Of Derivatives) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 769	$ 15,444
Derivative Liability	403,821	271,205
Interest rate lock commitments
Derivatives, Fair Value [Line Items]
Asset Derivatives		50
Derivative Liability	427	18
Interest rate forward sales commitments
Derivatives, Fair Value [Line Items]
Asset Derivatives	441	512
Derivative Liability	13	601
Interest rate swaps
Derivatives, Fair Value [Line Items]
Asset Derivatives		14,657
Derivative Liability	401,515	270,009
Interest rate contracts | Interest rate lock commitments
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	50
Derivative Liability	$ 427	$ 18
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	$ 0
Derivative Liability	$ 1,630	$ 392
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	$ 441	$ 512
Derivative Liability	$ 13	$ 601
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	$ 0	$ 14,657
Derivative Liability	$ 401,515	$ 270,009
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	$ 328	$ 225
Derivative Liability	$ 236	$ 185
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities