Quarterly report pursuant to Section 13 or 15(d)

12. Stock Based Compensation (Details)

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12. Stock Based Compensation (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Number of Shares    
Beginning Balance 6,720,458 5,095,458
Grants 1,475,000 2,150,000
Cancellations (165,000) (525,000)
Ending Balance 7,530,458 6,720,458
Options exercisable 3,955,458 3,420,458
Weighted Average Exercise Price    
Beginning Balance $ 1.35 $ 1.70
Grants 0.96 0.55
Cancellations
Ending Balance 1.29 1.35
Options exercisable $ 1.94 $ 2.05
Weighted Average Remaining Contractual Life (years)    
Beginning Balance 3 years 8 months 12 days 4 years 6 months
Grants 4 years 9 months 18 days 4 years 7 months 6 days
Ending Balance 3 years 6 months 3 years 8 months 12 days
Options exercisable 3 years 2 months 12 days 3 years 3 months 18 days
Aggregate Intrinsic Value    
Beginning Balance
Grants
Cancellations
Ending Balance