Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.20.2
Income Taxes - Additional Information (Detail) - USD ($)
12 Months Ended
May 31, 2020
May 31, 2019
May 31, 2018
Schedule Of Income Taxes [Line Items]      
Effective income tax rate reconciliation, at blended income tax rate, percent 21.00%    
Federal statutory income tax rate 21.00% 21.00% 28.60%
Net operating loss $ 264,900,000 $ 190,500,000 $ 139,200,000
Basis difference in acquired assets 2,483,097 $ 2,826,919  
Basis difference      
Schedule Of Income Taxes [Line Items]      
Basis difference in acquired assets $ 2,800,000