Quarterly report pursuant to Section 13 or 15(d)

Stock Options - Summary of Option Activity (Detail)

v3.3.0.814
Stock Options - Summary of Option Activity (Detail)
 9 Months Ended
Sep. 30, 2015
USD ($)
$ / shares
shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Shares Outstanding, Beginning balance 3,556,691
Shares, Granted 322,502
Shares, Exercised (51,128)
Shares Outstanding, Ending balance 3,828,065
Shares, Vested 1,378,857
Weighted Average Exercise Price Outstanding, Beginning balance | $ / shares $ 0.83
Weighted Average Exercise Price, Granted | $ / shares 2.53
Weighted Average Exercise Price, Exercised | $ / shares 0.11
Weighted Average Exercise Price Outstanding, Ending balance | $ / shares 0.99
Weighted Average Exercise Price, Vested | $ / shares $ 0.77
Weighted Average Remaining Contractual Term Outstanding in Years, Ending balance 8 years 2 months 23 days
Weighted Average Remaining Contractual Term in Years, Vested 7 years 6 months 4 days
Intrinsic Value ,Exercised | $ $ 95,108
Intrinsic Value, Ending Balance | $ 2,649,238
Intrinsic Value, Vested | $ $ 1,248,819