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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 Taxes [Line Items] |  |  |
Tax Act, additional benefit recorded related to remeasurement |  |  | $ (6,300)
Tax act, benefit associated with restructuring and recapitalization |  |  | 1,800
Valuation allowance against previously recognized foreign tax credits |  |  | 43,500
Valuation allowance for deferred income tax assets | $ 43,255 | $ 104,178 | 67,600
Change in total valuation allowance | (60,900) | 36,600 | 48,300
Tax effect of state and foreign net operating loss carryforwards | 82,817 | 78,310 |
Tax carryforwards expiring in 2021 | 500 |  |
Tax carryforwards expiring in 2022 | 200 |  |
Tax carryforwards expiring in 2023 | 3,200 |  |
Tax carryforwards expiring in 2024 | 1,000 |  |
Tax carryforwards expiring in 2025 | 7,400 |  |
Tax carryforwards expiring thereafter | 75,800 |  |
Valuation allowance foreign and state net operating loss carryforwards | 42,300 |  |
Decrease resulted primarily from a favorable settlements related to certain non-U.S. income tax obligations of an acquired business and the expiration of U.S. state income tax statutes | 12,100 | 9,100 | 7,900
Reduction due to expiration of certain federal and state statutes of limitations | 8,717 | 5,935 | 7,857
Interest and penalties expense (income) in the provision for income taxes | (700) | $ 800 | $ 100
Gross Amount Before Balance Sheet Presentation Netting |  |  |
Income Taxes [Line Items] |  |  |
Tax effect of state and foreign net operating loss carryforwards | $ 88,100 |  |

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