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Schedule of Net Deferred Income Tax Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Income Tax Disclosure [Abstract] |  |
Federal net operating loss carryforward | $ 58,167 | $ 39,340
Stock based compensation and other items | 7,622 | 4,779
Intellectual property | 62,055 | 58,504
Patent amortization | 4 | 4
Deferred tax assets before valuation | 127,848 | 102,627
Valuation allowance | (127,848) | (102,627)
Net deferred income tax assets |  |

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