Quarterly report pursuant to Section 13 or 15(d)

Material Agreements - Additional Information (Detail)

v3.21.2
Material Agreements - Additional Information (Detail) - USD ($)
$ in Millions
1 Months Ended
Dec. 07, 2018
Dec. 19, 2017
Aug. 31, 2019
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Upfront, non-refundable payment   $ 30.0  
Research and development and out-of-pocket   50.00%  
Milestone payments     $ 10.0
Purchase price $ 37.8    
Maximum      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Consideration paid   $ 20.0  
Maximum | Upon Achievement Of Development Regulatory And Sales Milestones      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Contingent milestone payments   $ 442.5