Other Income (Expense), Net - Schedule of Other Income (Expense), Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Income Expense [Abstract]
Foreign currency exchange gains (losses), net	$ 676	$ (255)	$ (457)
Gain on casualty insurance claim	0	302	0
Rental income	2	0	0
Other	102	9	0
Total other income (expense), net	$ 780	$ 56	$ (457)