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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Contingency [Line Items] |  |  |
Undistributed earnings of certain foreign subsidiaries | $ 58,500 | $ 77,400 |
Tax expense related to valuation allowance | 40,600 | 6,600 |
Unrecognized tax benefits, net | 4,100 |  |
Unrecognized tax benefits that, if recognized, would impact effective tax rate | 3,600 |  |
Interest and penalties related to uncertain tax positions | 0 | 0 | $ 0
Accrued penalties and interest related to uncertain tax positions | 0 | 0 |
State and Local Jurisdiction |  |  |
Income Tax Contingency [Line Items] |  |  |
Operating loss carry forwards | 511,500 | 608,700 |
Domestic Tax Authority |  |  |
Income Tax Contingency [Line Items] |  |  |
Operating loss carry forwards | 19,800 | 31,300 |
Foreign Tax Authority |  |  |
Income Tax Contingency [Line Items] |  |  |
Operating loss carry forwards | $ 76,400 | $ 58,600 |

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