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Provision for Income Taxes - Summary of Deferred Tax Assets and Liabilities (Details) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
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