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Stock-Based Compensation - Summary of Activity for Service-Based Restricted Common Shares (Detail) - Service-Based Restricted Common Shares - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
May 31, 2023
May 31, 2022
May 31, 2021
Restricted Common Shares      
Outstanding, beginning of year 650 777 643
Granted 358 192 307
Vested (184) (295) (146)
Forfeited (24) (24) (27)
Outstanding, end of year 800 650 777
Weighted Average Grant Date Fair Value      
Outstanding, beginning of year $ 44.12 $ 40.36 $ 41.79
Granted 49.89 57.19 38.99
Vested 40.52 42.90 43.41
Forfeited 48.94 42.36 42.15
Outstanding, end of year $ 47.39 $ 44.12 $ 40.36
Weighted Average Remaining Contractual Life (in years)      
Weighted average remaining contractual life of outstanding restricted common shares (in years) 1 year 3 months 10 days 1 year 3 months 1 year 3 months 29 days
Aggregate intrinsic value      
Aggregate intrinsic value of outstanding restricted common shares $ 44,926 $ 30,283 $ 51,541
Aggregate intrinsic value of restricted common shares vested during the year $ 8,897 $ 16,534 $ 5,873