Quarterly report pursuant to Section 13 or 15(d)

License Agreements (Detail)

v3.21.1
License Agreements (Detail)
£ in Millions, $ in Millions
 9 Months Ended
Feb. 28, 2021
item
Apr. 15, 2019
GBP (£)
Apr. 15, 2019
USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Number of license agreements 2    
Accrued license fee   £ 0.6 $ 0.8
Maximum      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Royalty on net sales (as a percent)   2.00% 2.00%
Minimum      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Royalty on net sales (as a percent)   0.75% 0.75%