Other Income And Expense (Components Of Other Income (Expense), Net) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Other Income And Expense [Abstract]
Interest income	$ 37	$ 28	$ 103	$ 297
Interest expense	(11)	(64)	(248)	(185)
Gain on investments carried at fair value, net	0	0	0	118
Foreign currency gain (loss), net	(913)	(790)	(1,751)	(2,230)
Other, net	(225)	(247)	(864)	(932)
Total other income (expense), net	$ (1,112)	$ (1,073)	$ (2,760)	$ (2,932)