v3.26.1
Stock-Based Compensation - Summary of Non-Vested Stock Option Awards (Detail) - $ / shares
shares in Thousands
12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
Number of Stock Options      
Non-vested, beginning of year 60,670    
Granted 0 54,200 58,000
Vested (30,455)    
Forfeited 0    
Non-vested, end of year 30,215 60,670  
Weighted Average Grant Date Fair Value Per Common Share      
Non-vested, beginning of year $ 16.23    
Granted 0    
Vested 15.04    
Forfeited 0    
Non-vested, end of year $ 17.43 $ 16.23