Residential Mortgage Servicing Rights (Schedule Of Changes In Mortgage Servicing Rights) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance, beginning of period	$ 117,259	$ 47,765	$ 27,428
Acquired/purchased MSR	0	62,770	0
Additions for new MSR capitalized	35,284	23,311	17,963
Due to changes in model inputs or assumptions	(380)	(5,757)	5,688
Other	(20,346)	(10,830)	(3,314)
Balance, end of period	$ 131,817	$ 117,259	$ 47,765