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Commitments and Contingencies - Additional Information (Detail) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2026 USD ($) | Feb. 28, 2025 USD ($) | Feb. 29, 2024 USD ($) | May 31, 2026 USD ($) Unit | May 31, 2025 USD ($) | May 31, 2024 USD ($)
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |
Estimated liability, measurement period, years |  |  |  | 15 years |  |
Estimated liability costs of remediation, current |  |  |  | $ 0.1 | $ 0.1 |
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration] |  |  |  | Other Liabilities, Current | Other Liabilities, Current |
Royalty Expense |  |  |  | $ 1.9 | $ 1.6 | $ 3.3
Future minimum royalty payment for period, 2027 |  |  |  | 0.3 |  |
Future minimum royalty payment for period, 2028 |  |  |  | 0.5 |  |
Future minimum royalty payment for period, 2029 |  |  |  | 0.1 |  |
Future minimum royalty payment for period, 2030 |  |  |  | 0.1 |  |
Future minimum royalty payment for period, 2031 |  |  |  | 0.1 |  |
Estimated liability costs of remediation, non current |  |  |  | $ 0.8 | $ 0.8 |
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration] |  |  |  | Other Liabilities, Noncurrent | Other Liabilities, Noncurrent |
Proceeds from legal settlement |  | $ 2.7 |  |  |  |
Fixed asset impairment |  | $ 2.1 |  |  |  |
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration] |  | General and Administrative Expense |  |  |  |
Contingency losses | $ 0.9 | $ 1.4 |  |  |  |
Reversal of contingent liability |  | $ 0.9 |  |  |  |
Number of unexpired units sold | Unit |  |  |  | 133,000 |  |
Animal Safety |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |
Business interruption insurance proceeds relating to fire damage |  |  | $ 1.3 |  |  |
Gain on Business Interruption Insurance Recovery, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | Cost of Product and Service Sold |  |  |
Product Recall |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |
Accrual in other current liabilities | $ 0.6 |  |  |  |  |

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