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Income Taxes - Schedule of Pretax Earnings (Loss) for Domestic and Foreign Operations (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
United States $ (47,490) $ (34,885) $ (11,085)
Foreign (483) 10,535 (8,929)
Pretax earnings (loss) $ (47,973) $ (24,350) $ (20,014)