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Provision for Income Taxes - Summary of Deferred Tax Assets and Liabilities (Details) - USD ($) | Mar. 31, 2021 | Dec. 31, 2020
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Income Tax Disclosure [Abstract] |  |
Reserves and accruals not currently deductible for tax purposes | $ 49,000 | $ 51,000
Amortizable assets | 69,000 | 72,000
Net operating loss carryforwards | 3,990,000 | 4,020,000
Deferred tax assets | 4,108,000 | 4,143,000
Property and equipment | (135,000) | (143,000)
Net Deferred tax assets | 3,973,000 | 179,400
Valuation allowance | (3,973,000) | (4,000,000)
Deferred tax assets and liabilities |  |

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