Derivatives (Summary Of Types Of Derivatives And Gains (Losses) Recorded) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ (3,299)	$ 1,186	$ (16,752)	$ 14,196
Foreign currency derivatives | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	527	556	1,522	1,371
Interest rate lock commitments | Interest rate contracts | Interest rate commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	922	(1,623)	2,313	407
Interest rate forward sales commitments | Interest rate contracts | Interest rate commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	(2,467)	2,029	(11,875)	10,773
Interest Rate Swap [Member] | Interest rate contracts | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Gain (Losses)	$ (2,281)	$ 224	$ (8,712)	$ 1,645