Income Taxes (Components Of Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Current income taxes, Federal	$ 45,817	$ 31,337	$ 16,636
Current income taxes, State	2,578	2,545	1,321
Current income taxes, Foreign	17,375	13,496	13,355
Total current	65,770	47,378	31,312
Deferred income taxes, Federal	1,538	(1,308)	10,558
Deferred income taxes, State	132	(93)	900
Deferred income taxes, Foreign	(3,898)	(2,593)	(2,207)
Total deferred	(2,228)	(3,994)	9,251
Total provision	$ 63,542	$ 43,384	$ 40,563