Derivatives (Summary Of Types Of Derivatives And Gains (Losses) Recorded) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ 1,642	$ (1,287)	$ (5,979)	$ 49,294
Foreign currency derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ 43	$ 779	$ (36)	$ 2,283
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income
Interest rate lock commitments | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ (376)	$ (2,149)	$ (459)	$ (6,907)
Future | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	(4,733)	(14,128)	(9,719)	(14,128)
Interest rate forward sales commitments | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ 1,008	$ 10,017	$ 790	$ 49,468
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Residential mortgage banking revenue, net	Residential mortgage banking revenue, net	Residential mortgage banking revenue, net	Residential mortgage banking revenue, net
Interest rate swaps | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ 5,700	$ 4,194	$ 3,445	$ 18,578
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income	Noninterest Income, Other Operating Income