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Equity Compensation Plans and Other Incentive Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
May 31, 2026 | May 31, 2025 | May 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Number of shares available for grant | 11,500,000 | 13,800,000 | 16,800,000
Options Exercisable, Weighted Average Exercise Price | $ 16.66 | $ 19.53 | $ 26.11
Compensation expense related to share based awards | $ 13.4 | $ 17.3 | $ 13.8
Remaining compensation cost to be expensed in future periods for non-vested options | $ 9.0 |  |
Weighted average expense recognition period | 2 years 4 months 24 days |  |
Number of shares purchased by employees | 300,000 | 200,000 | 100,000
Defined contribution 401(K) benefit expense | $ 4.2 | $ 3.7 | $ 3.4
Accrued Bonus | $ 13.5 | 1.8 |
First 3% employees deferred amount |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Defined contribution plan employer matching contribution | 100.00% |  |
Next 2% employees deferred amount |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Defined contribution plan employer matching contribution | 50.00% |  |
Restricted Stock Units (RSUs) |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Weighted average expense recognition period | 1 year 3 months 18 days |  |
Restricted stock units vested- fair value | $ 8.1 | $ 5.2 | $ 3.8
Weighted average grant date fair value | $ 6 | $ 15.49 | $ 15.55
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $ 8.2 |  |
Performance Stock Units (PSUs) |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Weighted average expense recognition period | 2 years |  |
Weighted average grant date fair value | $ 6.28 |  |
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $ 3.6 |  |
2023 Omnibus Incentive Plan | Performance Stock Units (PSUs) |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Employee Stock Purchase Plan | 2011 Employee Stock Purchase Plan |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Number of shares available for grant | 300,000 |  |
Number of shares authorized for grant | 1,000,000 |  |
Annual maximum limit percentage of compensation to purchase shares | 5.00% |  |
Employee stock purchase plan stock price percentage | 10.00% |  |
Minimum |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Stock option contractual terms | 5 years |  |
Minimum | Performance Stock Units (PSUs) |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Percentage of shareholder return over performance period | 0.00% |  |
Minimum | 2018 Omnibus Incentive Plan | Restricted Stock Units (RSUs) |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Average |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Stock option contractual terms | 7 years |  |
Maximum |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Vesting period | 5 years |  |
Stock option contractual terms | 10 years |  |
Maximum | Performance Stock Units (PSUs) |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Percentage of shareholder return over performance period | 240.00% |  |
Maximum | 2018 Omnibus Incentive Plan | Restricted Stock Units (RSUs) |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Vesting period | 5 years |  |

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