Commitments and Contingencies - Additional Information (Details) - USD ($)				1 Months Ended	3 Months Ended
	Nov. 11, 2020	Apr. 22, 2020	Jul. 27, 2018	Jul. 31, 2019	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2017
Loss Contingencies [Line Items]
Rent expense recognized					$ 200,000	$ 200,000
Operating lease right-of-use asset					741,000
Operating lease liabilities					974,000
Office Leases | Santa Clara
Loss Contingencies [Line Items]
Letters of credit					$ 500,000
Hologic, Inc. and Cytyc Surgical Products, LLC
Loss Contingencies [Line Items]
Loss contingency damages sought value				$ 7,100,000
Loss contingency damages awarded value		$ 7,100,000	$ 4,800,000
Loss contingency accrual for potential legal losses							$ 4,800,000
Hologic, Inc. and Cytyc Surgical Products, LLC | Surety Bond
Loss Contingencies [Line Items]
Loss contingency, increase in bond amount	$ 7,203,414