Residential Mortgage Servicing Rights (Schedule Of Changes In Mortgage Servicing Rights) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance, beginning of period	$ 109,243	$ 185,017
Additions for new MSR capitalized	1,237	1,601
Changes due to collection/realization of expected cash flows over time	(3,153)	(4,881)
Changes due to valuation inputs or assumptions	3,117	(2,937)
Balance, end of period	$ 110,444	$ 178,800