Note 4 - Leases - Lease Related Assets and Liabilities (Details) - USD ($) $ in Thousands |
Feb. 28, 2026 |
May 31, 2025 |
|---|---|---|
| Finance lease, right-of-use assets | $ 38,792 | $ 40,308 |
| Operating lease, right-of-use assets | 17,939 | 22,279 |
| Total right-of-use assets | 56,731 | 62,587 |
| Current portion of finance lease liabilities | 1,662 | 1,560 |
| Current portion of operating lease liabilities | 5,597 | 5,381 |
| Finance lease liabilities | 43,226 | 44,295 |
| Operating lease liabilities | 17,056 | 20,630 |
| Total lease liabilities | $ 67,541 | $ 71,866 |
| X | ||||||||||
- Definition Amount of lessee's right of use assets from operating and finance leases. No definition available.
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| X | ||||||||||
- Definition Total amount of liability for both operating lease and financing lease. No definition available.
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| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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