Other Income (Expense), Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Other Income and Expenses [Abstract]
Net gain (loss) on foreign currency exchange contracts	$ (105)	$ 1,865	$ (376)	$ 534
Net gain (loss) on foreign currency exchange transactions	158	(2,965)	27	(2,240)
Other income (expense)	135	18	71	37
Other income (expense), net	$ 188	$ (1,082)	$ (278)	$ (1,669)