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Schedule of Components of Income Before Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
U.S. $ 9,944 $ (18,295) $ 18,814
Foreign 28,319 38,777 52,660
Income before income taxes $ 38,263 $ 20,482 $ 71,474