Deferred tax assets (liabilities) and related valuation allowance as of December 31, 2021 and 2020 were as follows (in thousands): (Details) - USD ($) $ in Thousands  | 
Dec. 31, 2021  | 
Dec. 31, 2020  | 
|---|---|---|
| Deferred tax assets/(liabilities): | ||
| Net operating loss carryforward | $ 13,297 | $ 2,193 | 
| Stock-based compensation | 5,832 | 3,662 | 
| Other | 2,285 | 220 | 
| Total deferred assets | 21,414 | 6,075 | 
| Valuation allowance | (21,414) | (6,075) | 
| Net deferred tax assets | 
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- 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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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- References No definition available. 
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- 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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