Summary of Financial Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total before discount and debt issuance costs	$ 18,300	$ 18,300
Less: Current portion of financial liabilities	(10,000)
Less: Long-term portion of unamortized discount and debt issuance costs	(120)	(644)
Long-term financial liabilities	8,180	17,656
Secured Term Loan
Debt Instrument [Line Items]
Total before discount and debt issuance costs	10,000	10,000
Bank Revolving Loan Facility
Debt Instrument [Line Items]
Total before discount and debt issuance costs	$ 8,300	$ 8,300