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Debt - Maturities of Outstanding Debt (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Debt Disclosure [Abstract]    
December 31, 2016 $ 1,384  
December 31, 2017 582  
December 31, 2018 617  
December 31, 2019 400  
Total 2,983  
Current portion (1,384) $ (2,587)
Discount on long-term debt (42)  
Long-term debt, less current portion $ 1,557 $ 621