Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property and equipment
Property and equipment, gross	$ 3,893	$ 3,077
Less: accumulated depreciation	(1,394)	(1,132)
Total property and equipment, net	2,499	1,945
Depreciation expense	300	300
Other income (expense)
Property and equipment
Equipment held for sale	200
Laboratory equipment
Property and equipment
Property and equipment, gross	2,565	1,777
Leasehold improvements
Property and equipment
Property and equipment, gross	899	899
Office equipment
Property and equipment
Property and equipment, gross	$ 429	$ 401