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Revenue - Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Jan. 01, 2020
Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest     $ (1,434,397) $ (1,489,374) $ (1,037,865)   $ (1,126,250)
Accounts Receivable, Allowances $ 2,017 $ 6,895 2,017 5,372 6,895    
Allowance for Credit Losses [Roll Forward]              
Beginning Balance(1) 5,372            
Bad Debt Expense (1,738) 474          
Write-offs, foreign currency translation and other adjustments (1,617) (2,770)          
Ending Balance $ 2,017 6,895          
Retained Earnings [Member]              
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest     $ (914,120) $ (798,573) $ (561,017)   (558,269)
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]              
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Accounts Receivable, Allowances   9,191         $ 9,191
Allowance for Credit Losses [Roll Forward]              
Beginning Balance(1)   $ 9,191          
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member]              
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest           $ 1,310