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Financial Liabilities (Detail) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Less: Unamortized discount $ (242) $ (362)
Long-term financial liabilities 18,058 13,938
Term Loan    
Debt Instrument [Line Items]    
Debt, gross 10,000 10,000
Bank Revolving Loan Facility    
Debt Instrument [Line Items]    
Debt, gross $ 8,300 $ 4,300