Commitments and Contingencies - Additional Information (Details)	1 Months Ended
	Mar. 31, 2021 USD ($)	Sep. 30, 2017 Milestone	Dec. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)
HitGen Agreement [Member]
Commitments and Contingencies (Details) [Line Items]
Number of milestones achieved upon termination of agreement | Milestone		0
Payments upon termination of agreement	$ 0
Medivir Agreement [Member]
Commitments and Contingencies (Details) [Line Items]
Upfront payment				$ 400,000
Milestone payments				1,400,000
Milestone payments achieved			$ 0
Medivir Agreement [Member] | Specified Regulatory Approval And Sales Milestones [Member]
Commitments and Contingencies (Details) [Line Items]
Contractual obligation				25,000,000.0
Medivir Agreement [Member] | Specified Clinical Milestones [Member]
Commitments and Contingencies (Details) [Line Items]
Contractual obligation				700,000
Medivir Agreement [Member] | Specified Regulatory And Sales Milestones For Genetic Context [Member]
Commitments and Contingencies (Details) [Line Items]
Contractual obligation				$ 5,000,000.0