Uncertain Tax Positions (Reconciliation Of Beginning And Ending Balances Of Liability For Unrecognized Tax Benefits, Excluding Interest And Penalties) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at January 1	$ 25,423	$ 35,400	$ 34,689
Increases in unrecognized tax benefits related to the current year	2,229	8,999	2,484
Increases in unrecognized tax benefits related to prior years	167	9	1,689
Decreases in unrecognized tax benefits related to prior years	(134)	(16,651)	(3,350)
Decreases in unrecognized tax benefits related to settlements	(590)	(555)	0
Decreases in unrecognized tax benefits due to the lapse of the applicable statute of limitations	(4,297)	(1,779)	(112)
Balance at December 31	$ 22,798	$ 25,423	$ 35,400