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Income Taxes - Summary of Domestic and Foreign Pre-tax Loss (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]      
Domestic pre-tax income (loss) $ (238,885) $ (123,411) $ (78,112)
Foreign pre-tax income (loss) (42,088) (110,972) (165,824)
Total pre-tax income (loss) $ (280,973) $ (234,383) $ (243,936)