Commitments and Contingencies - Additional Information (Detail) - Manufacturing and Research Agreements $ in Thousands	Dec. 31, 2019 USD ($)
Commitments And Contingencies [Line Items]
Total minimum payments due	$ 5,171
Minimum payments due in 2020	4,263
Minimum payments due in 2021	$ 908

Amount of contractual obligation due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

No definition available.

Name:	us-gaap_ContractualObligationDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant