Capital Stock - Schedule of Common Stock Reserved for Future Issuance (Details) - shares	Mar. 31, 2025	Mar. 31, 2024
Common stock reserved for future issuance (in shares)	78,097,336	75,102,420
Common stock authorized but not reserved (in shares)	217,905,705
Issuance of common stock upon exercise of outstanding stock options under the Amended and Restated 2016 Stock Incentive Plan and the Amended and Restated 2019 Omnibus Equity Incentive Plan
Common stock reserved for future issuance (in shares)	3,239,642	815,357
Equity awards available under the Amended and Restated 2019 Omnibus Equity Incentive Plan
Common stock reserved for future issuance (in shares)	2,042,153	466,438
Shares available for issuance under the 2019 Employee Stock Purchase Plan
Common stock reserved for future issuance (in shares)	911,342	19,480
Shares reserved under the Sales Agreement
Common stock reserved for future issuance (in shares)	27,951,416	29,060,003
Warrant
Common stock reserved for future issuance (in shares)	43,952,783	44,741,142