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Income Taxes - Pre-tax Loss (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
U.S. operations $ (165,736) $ (329,368) $ (342,219)
Foreign operations 349,542 171,851 (72,660)
Income (Loss) Before Income Taxes $ 183,806 $ (157,517) $ (414,879)