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Income Taxes (Details Narrative) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018
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Income Tax Disclosure [Abstract] |  |
Unrecognized deferred tax benefits for stock-based compensation deduction | $ 2,539,000 | $ 2,523,000
Federal net operating loss carryforwards | 20,623,000 | 21,619,000
Deferred federal income research and development credits | 626,000 | 568,000
Net operating loss carryforwards for state income tax purposes | 10,713,000 | 12,018,000
State research and development tax credits | $ 388,000 | $ 374,000

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