Accrued liabilities consist of the following: | | | | | | | | | | | | | (in thousands) | May 31, 2025 | | May 31, 2024 | | Payroll and related expenses | $ | 20,397 | | | $ | 15,640 | | | Outside services | 3,143 | | | 8,962 | | | Research and development | 1,459 | | | 1,255 | | | Royalties | 2,642 | | | 2,575 | | | Sales and franchise taxes | 531 | | | 520 | | | Deferred warranties | 374 | | | — | | | Transaction service agreement payable | 2,241 | | | 6,259 | | | Rebates | 446 | | | 412 | | | Accrued freight | 575 | | | — | | | Accrued severance | 800 | | | 1,486 | | | | | | | Other | 2,910 | | | 3,989 | | | Total | $ | 35,518 | | | $ | 41,098 | |
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