Residential Mortgage Servicing Rights (Schedule Of Changes In Mortgage Servicing Rights) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance, beginning of period	$ 165,807	$ 100,413	$ 123,615	$ 92,907
Additions for new MSR capitalized	7,813	8,330	15,203	22,395
Changes due to collection/realization of expected cash flows over time	(4,961)	(4,366)	(10,308)	(8,911)
Changes due to valuation inputs or assumptions	10,899	(1,678)	51,048	(3,692)
Balance, end of period	$ 179,558	$ 102,699	$ 179,558	$ 102,699