Other Income (Expense), Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Schedule of Components of Other Income (Expense), Net
Net gain (loss) on foreign currency exchange contracts	$ (57)	[1]	$ (254)	[1]	$ (255)	[1]	$ (214)	[1]
Net gain (loss) on foreign currency exchange transactions	(1,596)		111		(1,949)		(339)
Other income	23		17		24		103
Other income (expense), net	$ (1,630)		$ (126)		$ (2,180)		$ (450)

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