Commitments and Contingencies - Additional Information (Detail) - Paragon [Member] $ in Millions		1 Months Ended
	Feb. 22, 2019 USD ($)	Oct. 31, 2018 Suite
Manufacturing Collaboration Agreement [Member]
Commitments And Contingencies [Line Items]
Number of dedicated clean room suites		2
Number of additional clean room suites available on optional reserve		2
Agreement expiration date		Dec. 31, 2024
Manufacturing Supply Agreement [Member]
Commitments And Contingencies [Line Items]
Pre-launch period purchase obligation, minimum amount per quarter per clean room | $	$ 4.0
Agreement expiration date	Dec. 31, 2024