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Income Taxes - Schedule of Income Before Income Taxes ( (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments [Abstract]    
Domestic $ (13,930) $ (11,276)
Foreign (4,040) (3,428)
Income before taxes $ (17,970) $ (14,704)