Commitments and Contingencies - Additional Information (Detail) - USD ($) shares in Thousands, $ in Thousands	1 Months Ended
	Aug. 31, 2017	Jun. 30, 2021	Jun. 30, 2020
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Common stock value		$ 0	$ 0
S*Bio Purchase Agreement
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Accrued payment for potential future payments		0
Future aggregate milestone payments		75,200
S*Bio Purchase Agreement | Phase Three Clinical Trial
Purchase Commitment, Excluding Long-term Commitment [Line Items]
First milestone payment	$ 200,000
Common stock value	$ 166,527
Issuance of common stock to purchase asset, shares | shares	500,000
Presage License Agreement
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Accrued payment for potential future payments		$ 0