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Long-term debts, net - Scheduled Future Maturities of Total Debts (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Debt Disclosure [Abstract]    
The remainder of 2016 $ 1,687  
2017 2,250  
2018 2,250  
2019 2,250  
2020 36,000  
2021 and thereafter 10,000  
Total maturities 54,437  
Add: Accrued PIK interest, added to the principal 463 $ 96
Less: Unamortized debts issuance costs (3,961)  
Long-term debt, net $ 50,939 $ 50,918