Inventory (Tables)

12 Months Ended

Dec. 31, 2021

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventory consists of the following (in thousands):

	As of December 31,
	2021		2020
Raw materials	$	2,292	$	2,993
Work in progress		578		647
Finished goods		372		1,177
Total inventory	$	3,242	$	4,817