| Line Item | Apr 30, 2026 | Jan 31, 2026 | Oct 31, 2025 | Jul 31, 2025 | Apr 30, 2025 | Jan 31, 2025 | Oct 31, 2024 | Jul 31, 2024 | Apr 30, 2024 | Jan 31, 2024 | Oct 31, 2023 | Jul 31, 2023 | Apr 30, 2023 | Jan 31, 2023 | Oct 31, 2022 | Jul 31, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Net sales | ||||||||||||||||
| YoY growth | -16.4% | -15.7% | -4.1% | -154.1% | ||||||||||||
| Cost of sales | ||||||||||||||||
| Gross profit | ||||||||||||||||
| % of revenue | 34.0% | 33.9% | 33.1% | -11.7% | ||||||||||||
| Expenses: | ||||||||||||||||
| Selling, general and administrative | ||||||||||||||||
| Research and development | ||||||||||||||||
| Amortization of intangibles | ||||||||||||||||
| Impairment of long-lived assets, including goodwill | ||||||||||||||||
| CEO transition costs | ||||||||||||||||
| Proxy solicitation costs | ||||||||||||||||
| Total operating expenses | ||||||||||||||||
| % of revenue | 37.0% | 35.1% | 35.6% | 150.9% | ||||||||||||
| Operating loss from continuing operations | ||||||||||||||||
| % of revenue | -2.9% | -1.2% | -2.5% | -162.6% | ||||||||||||
| Other expenses (income): | ||||||||||||||||
| Interest expense | ||||||||||||||||
| Interest (income) and other | ||||||||||||||||
| Write-off of deferred financing costs and debt discounts | ||||||||||||||||
| Change in fair value of warrants and derivatives | ||||||||||||||||
| Loss from continuing operations before income taxes | ||||||||||||||||
| Provision for (benefit from) income taxes | ||||||||||||||||
| Discontinued operations (Note 2): | ||||||||||||||||
| Net loss | ||||||||||||||||
| % of revenue | -3.3% | -12.8% | -14.3% | -11.6% | ||||||||||||
| Dividends on convertible preferred stock, net | — | — | ||||||||||||||
| Net loss attributable to common stockholders | ||||||||||||||||
| Basic (in dollars per share) | ||||||||||||||||
| Diluted (in dollars per share) |