Other Income (Expense), Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013	Sep. 30, 2012
Other Income and Expenses [Abstract]
Net gain (loss) on foreign currency exchange contracts	$ 299	[1]	$ 96	[1]	$ 44	$ (118)	[1]
Net gain (loss) on foreign currency exchange transactions	(1,084)		(266)		(3,033)	(604)
Other income	68		105		92	207
Other income (expense), net	$ (717)		$ (65)		$ (2,897)	$ (515)

[1] This represents the gains and (losses) incurred on foreign currency hedging derivatives (see Note 16).