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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Income Taxes [Line Items] |  |
Operating loss carryforwards | $ 231,500 |
Deferred tax assets, valuation allowance | 33,014 | $ 2,631
Foreign |  |
Income Taxes [Line Items] |  |
Operating loss carryforwards | 118,900 |
Deferred tax assets, valuation allowance | 4,100 | $ 2,600
Foreign | United Kingdom |  |
Income Taxes [Line Items] |  |
Operating loss carryforwards | 96,400 |
State and Local Jurisdiction |  |
Income Taxes [Line Items] |  |
Operating loss carryforwards | 112,800 |
Net operating loss carryforwards that do not expire | 3,800 |
Federal |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards that expire | 5,500 |
Deferred tax assets, valuation allowance | $ 28,900 |

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