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Composition of Certain Financial Statement Captions - Schedule of Other Long-Term Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]    
Long-term income tax payable $ 94,397 $ 76,767
Other 4,556 131
Other long-term liabilities, total $ 98,953 $ 76,898