Income Taxes (Schedule Of Components Of Income Tax) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Current, U.S.	$ 48,823	$ 59,384	$ 34,921
Current, State and local	3,434	4,548	2,704
Current, Foreign	31,343	18,178	16,730
Total current	83,600	82,110	54,355
Deferred, U.S.	4,792	(6,550)	1,658
Deferred, State and local	(1,103)	(293)	110
Deferred, Foreign	(7,265)	(493)	(687)
Total deferred	(3,576)	(7,336)	1,081
Total provision for income taxes	$ 80,024	$ 74,774	$ 55,436