Other (Income)/Expense, net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other (Income)/Expense, net [Abstract]
Currency transactions	$ (3,133)	$ (491)	$ 699	$ 3,375
Amortization of debt issuance costs and loan origination fees	533	436	1,209	922
Letter of credit fees	351	(16)	770	587
Other, net	(306)	78	(685)	(64)
Total	$ (2,555)	$ 7	$ 1,993	$ 4,820