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Income Taxes - Components of Income Before Income Taxes (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income before income taxes:        
Domestic $ 1,820 $ 727 $ 3,117 $ 924
Foreign 2,030 149 2,659 274
Income before income taxes $ 3,850 $ 876 $ 5,776 $ 1,198