Evaluation Agreements - Additional information (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Nov. 30, 2017	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	May 31, 2021
Disaggregation of Revenue [Line Items]
Deferred revenue		$ 0		$ 0
Takeda Agreement [Member]
Disaggregation of Revenue [Line Items]
Upfront payment	$ 5,900
Amount payable for evaluation services	$ 3,000
Agreement termination period	30 days
Agreement termination negotiation period	120 days
Revenue from contract		$ 0	$ 2,700
Deferred revenue					$ 2,000