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, Federal	$ 4,501	$ 2,650	$ 1,402
Current, State	821	483	256
Current, Foreign	34,457	23,423	22,315
Total current provision	39,779	26,556	23,973
Deferred, Federal	(3,320)	651	418
Deferred, State	(606)	119	76
Deferred, Foreign	(4,273)	(7,258)	(7,514)
Total deferred provision (benefit)	(8,199)	(6,488)	(7,020)
Total provision for income taxes	$ 31,580	$ 20,068	$ 16,953