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Income Taxes - Income (Loss) Before Expense (Benefit) for Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
U.S. entities $ (12,833) $ (29,829) $ (74,131)
International entities 6,587 5,052 40,760
Loss Before Income Taxes $ (6,246) $ (24,777) $ (33,371)