Quarterly report pursuant to Section 13 or 15(d)

Deferred Revenue - Schedule of Deferred Revenue (Detail)

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Deferred Revenue - Schedule of Deferred Revenue (Detail) - USD ($)
Mar. 31, 2016
Dec. 31, 2015
Deferred Revenue Disclosure [Abstract]    
Deferred revenue $ 1,455,020 $ 1,851,618
Less: current portion $ (1,455,020) (1,591,358)
Long-term portion   $ 260,260