Income Tax - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| Deferred tax assets: | |||
| Depreciation of property and equipment | $ 193 | $ 171 | |
| Research and experimental capitalization | 49,331 | 38,215 | |
| Share-based compensation | 3,886 | 3,797 | |
| Accrued expenses | 500 | 1,038 | |
| Government grants | 0 | 98 | |
| Deferred revenue | 3,225 | 3,442 | |
| Qualified donation | 23,224 | 26,832 | |
| Lease liability | 3,662 | 3,885 | |
| Inventory write-down | 2,953 | 0 | |
| Net operating loss carry forwards | 349,118 | 321,068 | |
| Less: valuation allowance | (429,181) | (394,778) | $ (357,956) |
| Total Deferred tax assets | 6,911 | 3,768 | |
| Deferred tax liabilities: | |||
| Right-of-use assets | (3,521) | (3,768) | |
| Deferred tax assets, net | $ 3,390 | $ 0 |
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income. 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 inventory. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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- 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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- 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://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 property, plant, and equipment. 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 before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities. 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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- References No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from leasing arrangements. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Deferred tax assets government grants. No definition available.
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- Definition Deferred Tax Assets, Leasing Arrangements No definition available.
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- Definition Deferred tax assets public welfare donations. No definition available.
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- Definition Deferred Tax Assets, Research And Experimental Capitalization No definition available.
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