XML 68 R55.htm IDEA: XBRL DOCUMENT v3.21.2
Stock-Based Compensation - Additional Information (Detail) - USD ($)
3 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Pre-tax stock-based compensation expense $ 3,303,000 $ 4,856,000
Non-Qualified Stock Options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Non-qualified stock options, granted 54,500,000  
Non-qualified stock option, per share weighted average price $ 60.19  
Non-qualified stock option, fair value, per share price $ 19.73  
Pre-tax stock-based compensation, period of recognition 3 years  
Pre-tax stock-based compensation expense $ 1,075,000  
Service-Based Restricted Common Shares    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Pre-tax stock-based compensation, period of recognition 3 years  
Pre-tax stock-based compensation expense $ 7,033,000  
Restricted common shares, granted 116,650  
Restricted common shares, fair value per share $ 60.29  
Performance Shares    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Pre-tax stock-based compensation expense $ 2,191,000  
Restricted common shares, granted 36,400  
Pre-tax stock-based compensation, period of recognition 3 years