Income Tax - Summary of Tax Effects of Temporary Differences and Carryforwards Rise to Deferred Tax Assets and Liabilities (Detail) - USD ($) |
Dec. 31, 2022 |
Dec. 31, 2021 |
|---|---|---|
| Deferred tax assets | ||
| Tax basis in excess of book value of assets | $ 899,000 | $ 897,000 |
| Non-capital loss carryforwards | 43,380,000 | 39,356,000 |
| Research and development deductions and credits | 8,942,000 | 7,058,000 |
| Stock options | 1,042,000 | 702,000 |
| §59(e) Capitalized R&D expenses | 11,342,000 | 7,159,000 |
| Other | 334,000 | 316,000 |
| Total deferred tax assets | 65,939,000 | 55,488,000 |
| Valuation allowance | (65,546,000) | (55,082,000) |
| Net deferred assets | 393,000 | 406,000 |
| Deferred tax liabilities | ||
| Other | (393,000) | (406,000) |
| Total deferred tax liabilities | (393,000) | $ (406,000) |
| 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 Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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