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Income Taxes - Schedule of Operating Loss and Tax Credit Carryforwards (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Operating Loss Carryforwards [Line Items] |  |
Gross Amount | $ 710,706 |
Tax credits - Tax Benefit | 10,960 | $ 27,801
Tax Benefit | 126,470 |
UK NOL |  |
Operating Loss Carryforwards [Line Items] |  |
Gross Amount | 369,432 |
NOL - Tax Benefit | 92,358 |
United States |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits - Tax Benefit | 2,322 |
United States - State |  |
Operating Loss Carryforwards [Line Items] |  |
Gross Amount | 307,195 |
NOL - Tax Benefit | 14,495 |
United States - State | Research Tax Credit Carryforward |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits - Tax Benefit | 7,473 |
United States - Federal |  |
Operating Loss Carryforwards [Line Items] |  |
Gross Amount | 15,363 |
NOL - Tax Benefit | 3,226 |
Other regions NOL |  |
Operating Loss Carryforwards [Line Items] |  |
Gross Amount | 18,716 |
NOL - Tax Benefit | 5,432 |
Other non-U.S. tax credits |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits - Tax Benefit | 1,164 |
Indefinite |  |
Operating Loss Carryforwards [Line Items] |  |
Tax Benefit | 100,132 |
Indefinite | UK NOL |  |
Operating Loss Carryforwards [Line Items] |  |
NOL - Tax Benefit | 92,358 |
Indefinite | United States - State |  |
Operating Loss Carryforwards [Line Items] |  |
NOL - Tax Benefit | 648 |
Indefinite | United States - State | Research Tax Credit Carryforward |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits - Tax Benefit | 1,565 |
Indefinite | United States - Federal |  |
Operating Loss Carryforwards [Line Items] |  |
NOL - Tax Benefit | 0 |
Indefinite | Other regions NOL |  |
Operating Loss Carryforwards [Line Items] |  |
NOL - Tax Benefit | 5,353 |
Indefinite | Other non-U.S. tax credits |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits - Tax Benefit | 208 |
Various Tax Expiration Years |  |
Operating Loss Carryforwards [Line Items] |  |
Tax Benefit | 26,338 |
2024 - Indefinite | UK NOL |  |
Operating Loss Carryforwards [Line Items] |  |
NOL - Tax Benefit | 0 |
2026 - 2045 | United States - State |  |
Operating Loss Carryforwards [Line Items] |  |
NOL - Tax Benefit | 13,847 |
2028 - 2034 | United States - Federal |  |
Operating Loss Carryforwards [Line Items] |  |
NOL - Tax Benefit | 3,226 |
2030-2040 | Other regions NOL |  |
Operating Loss Carryforwards [Line Items] |  |
NOL - Tax Benefit | 79 |
2030 - 2044 | United States - State | Research Tax Credit Carryforward |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits - Tax Benefit | 5,908 |
2026-2044 | United States |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits - Tax Benefit | 2,322 |
2026 - 2034 | Other non-U.S. tax credits |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits - Tax Benefit | $ 956 |

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- Definition Deferred Tax Assets, Operating Loss Carryforwards And Tax Credits Carryforwards + References No definition available. + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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- Definition Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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