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Income Taxes - Schedule of Domestic and Foreign Income (loss), Before Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Domestic $ (2,090) $ (8,133) $ 440
Foreign 8,132 6,642 4,867
Income (loss) before income taxes $ 6,042 $ (1,491) $ 5,307