Other Expense (Income), Net - Schedule of Other Expense (Income), 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 Expense [Abstract]
Foreign currency exchange losses (gains), net	$ 159	$ (140)	$ (222)	$ 43
Rental income	(1)	0	(1)	(1)
Other	(1)	0	(1)	0
Total other expense (income), net	$ 157	$ (140)	$ (224)	$ 42