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Income Taxes - Components of net deferred taxes (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforwards | $ 53,984 | $ 9,027
R&D tax credit | 837 | 837
Deferred R&D expenses | 32,729 | 11,123
Accrued expenses | 1,903 | 783
Share-based compensation | 978 | 104
Other | 424 | 337
Total deferred tax assets | 90,855 | 22,211
Valuation allowance | (90,855) | (22,211)
Deferred tax assets, net of valuation allowance | $ 0 | $ 0

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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 -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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