Inventory - Schedule of Major Classes of Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 913	$ 376
Work in progress	2,431	460
Finished goods	6,306	5,016
Inventory, gross	9,650	5,852
Less: inventory reserves	(24)	(4)
Inventory, net	9,626	5,848
Inventory	5,747	3,850
Inventory, net of current portion	$ 3,879	$ 1,998