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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Income Tax Contingency [Line Items] |  |  |  |  |  |
Provision for (benefit from) income taxes | $ 598 | $ (339) |  | $ (253) | $ 13 |
Income tax provision on operating income | 900 |  |  | 1,500 |  |
Income tax benefit from settlement of uncertain tax benefits | $ (300) |  |  | (300) |  |
Valuation allowance |  |  |  |  |  | $ 55,400
Increase in valuation allowance recorded as an expense |  |  |  | 33,600 |  | 35,100
Decrease in valuation allowance charged to equity |  |  |  |  |  | (28,200)
Income tax benefit recognized as result of CARES Act |  |  | $ 600 |  |  |
Foreign Tax Authority |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Increase in valuation recorded |  |  |  |  |  | $ 6,900
Income tax benefit from settlement of uncertain tax benefits |  |  |  | $ (1,500) |  |

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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) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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