Annual report pursuant to Section 13 and 15(d)

4. Stock-Based Compensation (Details)

v3.6.0.2
4. Stock-Based Compensation (Details) - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Summarizes the stock option activity    
Outstanding Beginning Balance, Number of Options 1,158,251 607,877
Granted, Number of Options 1,135,650 614,730
Forfeitures, Number of Options (89,826) (53,280)
Expirations, Number of Options 20,352 11,076
Outstanding Ending Balance, Number of Options 2,183,723 1,158,251
Exercisable Ending Balance, Number of Options 689,963 1,135,650
Outstanding Beginning Balance, Weighted Average Exercise Price $ 4.96 $ 8.00
Granted, Weighted Average Exercise Price 1.31 2.44
Forfeitures, Weighted Average Exercise Price 2.51 3.81
Cancelled or expired, Weighted Average Exercise Price 69.46 32.71
Outstanding Ending Balance, Weighted Average Exercise Price 2.56 4.96
Exercisable Ending Balance, Weighted Average Exercise Price $ 4.52 $ 4.96
Weighted Average Remaining Contractual Life (in years) Outstanding 8 years 6 months 22 days 8 years 5 months 5 days
Weighted Average Remaining Contractual Life (in years) Exercisable 6 years 10 months 6 days 6 years 4 months 24 days