Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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Deferred tax assets: | |||
Research and development tax credits | $ 8,371,302 | $ 7,390,441 | |
Net operating loss carryovers | 57,563,810 | 47,460,988 | |
Property and equipment | 219,461 | 241,000 | |
Research and development costs | 12,578,612 | 15,083,114 | |
Start-up and organizational costs | 540 | 618 | |
Stock-based compensation | 4,041,136 | 3,420,667 | |
Operating lease liability | 245,811 | 594,507 | |
Other accruals | 270,912 | 276,512 | |
Total gross deferred tax assets | 83,291,584 | 74,467,847 | |
Less: valuation allowance | (82,929,675) | (73,892,063) | $ (63,349,287) |
Total deferred tax assets | 361,909 | 575,784 | |
Deferred tax liabilities: | |||
Operating lease right-of-use asset | (361,909) | (575,784) | |
Total deferred tax liabilities | (361,909) | (575,784) | |
Total deferred taxes, net | $ 0 | $ 0 |
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- References 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 before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from in-process research and development costs expensed in connection with a business combination. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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- 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 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, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from reserves and accruals, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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 leasing arrangements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Deferred tax assets, leasing arrangements. No definition available.
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- Definition Deferred tax assets, start up and organizational costs. No definition available.
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