Annual report pursuant to Section 13 and 15(d)

Stock Options - Summary of Option Activity (Detail)

v3.3.1.900
Stock Options - Summary of Option Activity (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Shares Outstanding, Beginning balance 3,556,691 597,243
Shares, Granted 600,002 3,047,139
Shares, Exercised (51,128) (87,691)
Shares, Forfeited (123,500)  
Shares Outstanding, Ending balance 3,982,065 3,556,691
Shares, Vested 1,946,810  
Weighted Average Exercise Price Outstanding, Beginning balance $ 0.83 $ 0.13
Weighted Average Exercise Price, Granted 2.10 0.95
Weighted Average Exercise Price, Exercised 0.11 0.11
Weighted Average Exercise Price, Forfeited 1.00  
Weighted Average Exercise Price Outstanding, Ending balance 1.03 $ 0.83
Weighted Average Exercise Price, Vested $ 0.87  
Weighted Average Remaining Contractual Term Outstanding in Years, Ending balance 8 years 1 month 6 days  
Weighted Average Remaining Contractual Term in Years, Vested 7 years 7 months 17 days  
Intrinsic Value, Exercised $ 152,531  
Intrinsic Value, Ending Balance 2,578,843  
Intrinsic Value, Vested $ 1,560,372