Inventories (Tables)

12 Months Ended

Dec. 31, 2021

Inventory Disclosure [Abstract]

Schedule of Inventory, Net of Write-Downs

Inventory, net of write-downs, as of December 31, 2021 and 2020 were as follows (in thousands):

	As of December 31,
	2021		2020
Raw materials	$	1,544	$	1,123
Work in-process		2,447		1,337
Finished goods		94		195
Total inventory, net	$	4,085	$	2,655