Other (Expense) Income, Net (Schedule 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 (Expense) Income, Net
Interest income	$ 450		$ 682		$ 1,576		$ 1,526
Interest expense	(852)		(1,116)		(2,621)		(3,355)
Foreign currency (losses) gains, net	(7,338)	[1]	5,379	[1]	(2,477)	[1]	(3,474)	[1]
Forward foreign currency contracts gains (losses), net	2,225	[2]	(3,308)	[2]	(268)	[2]	(803)	[2]
Other income (expense), net	21		106		139		400
Total other (expense) income, net	$ (5,494)		$ 1,743		$ (3,651)		$ (5,706)

[1] Our foreign currency (losses) gains, net are predominantly attributable to the re-measurement gains or losses on our net balances of monetary assets and liabilities in our foreign subsidiaries which were primarily denominated in the Euro, and to a lesser extent, the British Pound and Canadian Dollar. The foreign currency re-measurement adjustments to these balance sheet items are calculated by comparing the currency spot rates at the end of a month to the spot rates at the end of the previous month.

[2] Relates to changes in fair value of our forward foreign currency contracts not designated as hedging instruments. See Note 15 — Derivative Instruments for further details.