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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Deferred tax assets: |  |
Accrued bonus | $ 376,000 | $ 243,000
Fixed assets | 0 | 108,000
Federal credit carryforwards | 939,000 | 331,000
Leases | 28,000 | 0
Start-up costs | 39,000 | 48,000
Deferred tax assets before valuation allowance | 1,382,000 | 730,000
Valuation allowance | 1,237,000 | 560,000
Total deferred tax assets | 145,000 | 170,000
Deferred tax liabilities: |  |
Intangible assets | 90,000 | 148,000
Fixed assets | 47,000 | 0
Prepaid expenses | 8,000 | 22,000
Total deferred tax liabilities | 145,000 | 170,000
Net deferred tax asset | $ 0 | $ 0

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