Schedule of Net Deferred Income Tax Assets (Details) - USD ($) $ in Thousands  | 
Dec. 31, 2022  | 
Dec. 31, 2021  | 
|---|---|---|
| Income Tax Disclosure [Abstract] | ||
| Federal net operating loss carryforward | $ 66,741 | $ 58,171 | 
| Stock based compensation and other items | 4,674 | 7,622 | 
| Intellectual property | 41,572 | 62,055 | 
| Deferred tax assets before valuation | 112,987 | 127,848 | 
| Valuation allowance | (112,987) | (127,848) | 
| Net deferred income tax assets | 
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill. No definition available. 
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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| X | ||||||||||
- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensation and benefits costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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| X | ||||||||||
- References No definition available. 
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