Income Taxes (Schedule Of Components Of Provision (Benefit) For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Provision Benefit For Income Taxes [Line Items]
Provision (benefit) for deferred income taxes	$ 2,073	$ (1,970)	$ 5,996
Provision for income taxes	75,467	82,330	72,668
Current [Member]
Provision Benefit For Income Taxes [Line Items]
Federal	50,999	59,887	45,549
State	5,639	5,879	5,591
International	16,657	18,534	15,532
Provision for current income taxes	73,295	84,300	66,672
Deferred [Member]
Provision Benefit For Income Taxes [Line Items]
Federal	3,203	(198)	6,823
State	329	72	313
International	(1,360)	(1,844)	(1,140)
Provision (benefit) for deferred income taxes	$ 2,172	$ (1,970)	$ 5,996