Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation (Details)

v3.19.1
Stock Based Compensation (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Weighted Average Remaining Contractual Life (years)    
Beginning Balance 1 year 9 months 22 days  
Stock Options [Member]    
Number of Shares    
Beginning Balance 8,463,184 7,550,457
Grants 1,423,326 1,615,000
Expirations (725,000) (577,273)
Cancellations   (125,000)
Ending Balance 9,161,510 8,463,184
Options exercisable 9,161,510 7,688,184
Weighted Average Exercise Price    
Beginning Balance $ 1.26 $ 1.29
Grants 0.26 0.98
Expirations 0.69 1.02
Cancellations  
Ending Balance 1.15 1.26
Options exercisable $ 1.15 $ 1.27
Weighted Average Remaining Contractual Life (years)    
Beginning Balance 3 years 3 years 3 months 19 days
Grants 4 years 4 months 24 days 4 years 9 months 18 days
Ending Balance 2 years 3 years
Options exercisable 2 years 3 years
Aggregate Intrinsic Value    
Beginning Balance
Grants
Cancellations
Ending Balance