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Income Taxes - Summary of Operating Loss Carryforwards (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Operating Loss Carryforwards [Line Items] |  |
Total operating loss carryforwards | $ 292,732 | $ 399,795
Federal |  |
Operating Loss Carryforwards [Line Items] |  |
Total operating loss carryforwards | 120,130 | 197,607
State |  |
Operating Loss Carryforwards [Line Items] |  |
Total operating loss carryforwards | 147,539 | 166,196
Foreign |  |
Operating Loss Carryforwards [Line Items] |  |
Total operating loss carryforwards | $ 25,063 | $ 35,992

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319 + Details
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