Other Income (Expense), Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Schedule of components of other expense, net
Net gain (loss) on foreign currency exchange contracts	$ 96	$ (569)	$ (118)	$ (123)
Net gain (loss) on foreign currency exchange transactions	(266)	210	(604)	(1,008)
Other income (expense)	105	6	207	360
Other income (expense), net	$ (65)	$ (353)	$ (515)	$ (771)