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Income Taxes (Details Narrative) - USD ($) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Effective tax rate of expected statutory rate | 21.00% | 21.00%
Valuation allowance on deferred tax assets | $ 23,740,000 | $ 21,500,000
Operating loss, research and development tax credit forwards expiration year |  | Year beginning after 2017 but before 2022
Increase in valuation allowance | 2,240,000 |
Net operating loss carry-forwards | $ 67,100,000 |
Operating loss carry-forwards expiration years | expire between 2026 and 2039 |
Research and development tax credit carry-forwards | $ 1,795,000 | $ 1,795,000
Tax credit carry-forwards, expiration date | expire between 2023 and 2037 |
Duration for changes in ownership | 3 years |
Percentage of income tax benefit likely of being realized upon settlement with tax authority | Greater than 50% |
Net operating loss due to ownership changes | $ 765,000 |
Annual limitation due to ownership changes | $ 1,151,000 |
Effective tax rate expected statutory valuation allowance on net deferred tax assets | 100.00% | 100.00%
Research And Development [Member] |  |
Research and development tax credit carry-forwards | $ 175,000 |
Tax credit carry-forwards, expiration date | between 2023 and 2038 |
Tax Reform [Member] |  |
Effective tax rate of expected statutory rate | 21.00% |
Income tax reconciliation description | On December 22, 2017, the U.S. enacted the Tax Cuts and Jobs Act (the "Act"). The Act, which is also commonly referred to as "U.S. tax reform," significantly changes U.S. corporate income tax laws by, among other things, reducing the U.S. corporate income tax rate to 21% starting in 2018 |

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