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Income Taxes - Net Operating Loss Carryforwards (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($)
U.S. state income tax |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforward, amount | $ 106,987
U.S. state income tax | Minimum |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforward, year of expiration | 2021
U.S. state income tax | Maximum |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforward, year of expiration | 2040
Foreign |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforward, amount | $ 7,441
Foreign | Minimum |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforward, year of expiration | 2021
Foreign | Maximum |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforward, year of expiration | 2025
Indefinite |
Operating Loss Carryforwards [Line Items] |
Operating loss carryforward, amount | $ 161,851
Operating loss carryforward, year of expiration | Never

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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=84230637&loc=d3e32559-109319 + Details
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