Other Expense (Income), Net - Schedule of Other Expense (Income), Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Income Expense [Abstract]
Gain on casualty insurance claim	$ (302)	$ 0	$ (302)	$ 0
Foreign currency exchange losses (gains), net	174	98	217	533
Other	(4)	0	(5)	0
Total other expense (income), net	$ (132)	$ 98	$ (90)	$ 533