Mortgage Servicing Rights (Schedule Of Changes In Mortgage Servicing Rights) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance, beginning of period	$ 27,428		$ 18,184		$ 14,454
Additions for new mortgage servicing rights capitalized	17,963		17,710		6,720
Due to changes in model inputs or assumptions	5,688	[1]	(4,651)	[1]	(858)	[1]
Other	(3,314)	[2]	(3,815)	[2]	(2,132)	[2]
Balance, end of period	$ 47,765		$ 27,428		$ 18,184

[1] Principally reflects changes in discount rates and prepayment speed assumptions, which are primarily affected by changes in interest rates.

[2] Represents changes due to collection/realization of expected cash flows over time.