Income Taxes - Additional Information (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2025 |
Apr. 30, 2024 |
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| Operating Loss Carryforwards [Line Items] | |||
| Income taxes (net of refunds) | $ 108,000 | $ 100,000 | $ (978,000) |
| Deferred tax assets valuation allowance | $ 20,891,000 | $ 19,106,000 | |
| Effective tax rate (as a percent) | (0.50%) | 267.40% | 0.60% |
| Gross tax-effected unrecognized tax benefits | $ 0 | $ 0 | |
| Federal | |||
| Operating Loss Carryforwards [Line Items] | |||
| Net operating loss carryforwards | 20,600,000 | ||
| Research and development credits | 533,000 | ||
| Deferred tax assets net operating loss carryforwards | 4,300,000 | ||
| State | |||
| Operating Loss Carryforwards [Line Items] | |||
| Net operating loss carryforwards | 12,200,000 | ||
| Deferred tax assets net operating loss carryforwards | 586,000 | ||
| NOL carryforwards subject to expiration | 7,700,000 | ||
| NOL carryforwards carried forward indefinitely | $ 4,500,000 | ||
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- Definition Operating loss carryforwards carried forward indefinitely. No definition available.
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- Definition Operating loss carryforwards subject to expiration. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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