Development, Commercialization and Supply Agreement - Additional Information1 (Detail) - Out-licenses - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-04-01	Mar. 31, 2019
Eddingpharm
License And Collaboration Agreements [Line Items]
Revenue recognized over remaining period	15 years
HLS
License And Collaboration Agreements [Line Items]
Revenue recognized over remaining period	11 years