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Income Taxes - Income Before Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
United States $ 22,725 $ 11,353 $ 10,268
Foreign 17,846 20,105 22,320
INCOME BEFORE INCOME TAXES $ 40,571 $ 31,458 $ 32,588