Other Income (Expense) - Schedule of Other Income and Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Other Income And Expenses [Abstract]
Interest income	$ 88	$ 743
Change in fair value of derivative liability	(556)	(104)
Realized foreign exchange loss	1	(12)
Realized loss on disposal of equipment	(281)	0
Total other income (expenses)	$ (748)	$ 627