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Income Taxes - Summary of Components of Deferred Tax Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Income Tax Disclosure [Line Items] |  |
Research and development expenses | $ 6,529 | $ 5,392
Stock-based compensation | 1,969 | 610
Accrued expenses | 220 | 635
Other | 191 | 48
Total deferred tax assets | 42,265 | 22,005
Less: valuation allowance | (42,046) | (21,936)
Net deferred tax assets | 219 | 69
United States |  |
Income Tax Disclosure [Line Items] |  |
Net operating loss carryforwards | 29,094 | 11,342
Israel |  |
Income Tax Disclosure [Line Items] |  |
Net operating loss carryforwards | $ 4,262 | $ 3,978

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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