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Income Taxes (Details 1) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Income Taxes |  |
Tax benefit at US federal statutory rates | $ (3,000,000) | $ (2,200,000)
Tax benefit at state statutory rates | (600,000) | (100,000)
Tax benefit from federal and state R&D tax credits | (100,000) | (100,000)
Increase in valuation allowance | 3,700,000 | 2,400,000
Total | $ 0 | $ 0

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