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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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Income taxes.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

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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.

+ 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 (c)
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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
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