Balance Sheet Account Detail - Schedule of Property and Equipment Net of Accumulated Depreciation (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 3,403	$ 6,445
(Less): Accumulated depreciation	(2,948)	(2,868)
Property and equipment, net	455	3,577
Manufacturing equipment
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	0	3,245
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	1,803	1,680
Laboratory equipment
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	5	5
Office furniture
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	317	248
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 1,278	$ 1,267