Quarterly report pursuant to Section 13 or 15(d)

Material Agreements - Additional Information (Detail)

v3.19.3.a.u2
Material Agreements - Additional Information (Detail) - USD ($)
$ / shares in Millions, $ in Millions
9 Months Ended
May 31, 2019
Dec. 07, 2018
Dec. 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%
Purchase price   $ 37.8  
Swiss value-added tax receivable     $ 2.9
Maximum [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
consideration paid     $ 20.0
Maximum [Member] | Upon Achievement Of Development Regulatory And Sales Milestones [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Contingent milestone payments     $ 452.5
Achievement of Development and Regulatory [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Milestone Payments $ 10.0