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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
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