Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plan (Detail)

v3.21.2
Employee Benefit Plan (Detail) - Employee Savings Plan - USD ($)
$ in Millions
12 Months Ended
May 31, 2021
May 31, 2020
May 31, 2019
Defined Contribution Plan Disclosure [Line Items]      
Qualified non-elective contribution, employer contribution, as a percent 3.00%    
Qualified non-elective contribution expense $ 0.7 $ 0.1 $ 0.1