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Income Taxes - Narrative (Details) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 USD ($) numberOfForeignSubsidiaries | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Income Tax Disclosure [Abstract] |  |  |
Net tax benefit from CARES Act | $ 7,600 |  |
Current tax benefit from CARES Act | 18,900 |  |
Deferred tax expense from CARES Act | $ 11,300 |  |
Number of foreign subsidiaries | numberOfForeignSubsidiaries | 2 |  |
Net deferred tax benefits from foreign subsidiary restructuring | $ 8,300 |  |
Operating Loss Carryforwards [Line Items] |  |  |
Valuation allowance | 19,722 | $ 18,631 |
Undistributed earnings of foreign subsidiaries | 62,200 |  |
Unrecognized tax benefits | 700 |  | $ 300
U.S. |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Net operating loss carryforward | 197,400 |  |
Net operating loss carryforwards not subject to expiration | 85,100 |  |
Net operating loss carryforwards subject to expiration | 112,300 |  |
Valuation allowance | 2,900 |  |
Foreign |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Valuation allowance | $ 16,800 |  |

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