Derivatives (Summary Of Types Of Derivatives And Gains (Losses) Recorded) (Details) (Interest Rate Contracts [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	$ (1,728)	$ (3,174)
Interest Rate Lock Commitments [Member] | Mortgage Banking Revenue [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	4,157	688
Interest Rate Forward Sales Commitments [Member] | Mortgage Banking Revenue [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(5,104)	(2,648)
Interest Rate Swap [Member] | Other Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	$ (781)	$ (1,214)