Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Stock Options, Stock Purchase Plan and Warrants - Roll Forward of Non-Vested Stock Options Activity (Detail)

v3.3.1.900
Stock Options, Stock Purchase Plan and Warrants - Roll Forward of Non-Vested Stock Options Activity (Detail)
12 Months Ended
Dec. 31, 2015
$ / shares
shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Number of Options, Non-vested, Beginning balance | shares 1,627,718
Number of Options, Granted | shares 1,765,500
Number of Options, Vested | shares (667,497)
Number of Options, Forfeited | shares (7,500)
Number of Options, Non-vested, Ending balance | shares 2,718,221
Weighted average grant date fair value, Non-vested, Beginning balance | $ / shares $ 1.35
Weighted average grant date fair value, Granted | $ / shares 2.55
Weighted average grant date fair value, Vested | $ / shares 0.57
Weighted average grant date fair value, Forfeited | $ / shares 1.39
Weighted average grant date fair value, Non-vested, Ending balance | $ / shares $ 2.22