Note 5 - Leases - Lease Costs (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2025 |
Apr. 30, 2026 |
Apr. 30, 2025 |
Jul. 31, 2025 |
|
| Operating lease cost | $ 239 | $ 588 | $ 764 | $ 1,779 | |
| Short-term lease cost | 638 | 300 | 1,423 | 806 | |
| Total lease cost | 877 | 888 | 2,187 | 2,585 | |
| Operating cash flows from operating leases | $ 245 | $ 611 | $ 759 | $ 1,838 | |
| Weighted-average remaining lease term - operating leases (years) (Year) | 2 years 3 months 18 days | 2 years 3 months 18 days | 2 years 8 months 12 days | ||
| Weighted-average discount rate - operating leases | 5.70% | 5.70% | 5.20% | ||
| X | ||||||||||
- Definition Amount of lease cost recognized by lessee for lease contract. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of short-term lease cost, excluding expense for lease with term of one month or less. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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