Income Tax - Summary of Tax Effects of Temporary Differences and Carryforwards Rise to Deferred Tax Assets and Liabilities (Detail) - USD ($) |
Dec. 31, 2023 |
Dec. 31, 2022 |
|---|---|---|
| Deferred tax assets | ||
| Tax basis in excess of book value of assets | $ 899,000 | $ 899,000 |
| Net operating loss carryforwards | 48,867,000 | 43,380,000 |
| Research and development deductions and credits | 10,716,000 | 8,942,000 |
| Stock options | 1,134,000 | 1,042,000 |
| Capitalized R&D expenses | 11,528,000 | 11,342,000 |
| Other | 434,000 | 334,000 |
| Total deferred tax assets | 73,578,000 | 65,939,000 |
| Valuation allowance | (73,232,000) | (65,546,000) |
| Net deferred tax assets | 346,000 | 393,000 |
| Deferred tax liabilities | ||
| Right-of-use asset | (91,000) | (91,000) |
| Other | (255,000) | (302,000) |
| Total deferred tax liabilities | (346,000) | $ (393,000) |
| Net deferred tax assets | $ 0 |
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- Definition Deferred tax assets capitalized research and development expenses. No definition available.
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- Definition Deffered tax liabilities, right of use assets No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. 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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- References 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, 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 temporary differences from property, plant, and equipment. No definition available.
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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 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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- References No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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