Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2021

Property Plant And Equipment [Abstract]

Summary of Property and Equipment

Property and equipment consist of the following (in thousands):

	As of December 31,
	2021			2020
Machinery and equipment	$	1,610		$	1,661
Computer equipment and software		243			241
Office equipment		104			230
Leasehold improvements		549			1,303
Construction in progress		1			3
		2,507			3,438
Less: accumulated depreciation and amortization		(2,123	)		(2,904	)
Property and equipment, net	$	384		$	534