Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands |
Apr. 30, 2025 |
Apr. 30, 2024 |
|---|---|---|
| Income Tax Disclosure [Abstract] | ||
| Federal net operating loss carryforwards | $ 52,496 | $ 48,745 |
| Foreign net operating loss carryforwards | 2,059 | |
| State operating loss carryforwards | 1,950 | 1,934 |
| Federal and New Jersey research and development tax credits | 5,553 | 5,404 |
| Stock compensation | 378 | 470 |
| Accrued expenses | 188 | 312 |
| Research and experimentation expenses | 2,259 | 1,977 |
| Other | 337 | 601 |
| Net deferred tax assets before valuation allowance | 63,161 | 61,502 |
| Valuation allowance | (62,192) | (60,322) |
| Deferred tax assets | 969 | 1,180 |
| Intangibles | (788) | (793) |
| Lease liabilities | (384) | (590) |
| Net deferred tax liabilities | $ (203) | $ (203) |
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- Definition Deferred tax liabilities other liabilities. No definition available.
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- Definition Net deferred tax assets liabilities. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from in-process research and development cost acquired in business combination or from joint venture formation or both. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities. 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 Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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