Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation (Details)

v3.19.1
Stock Based Compensation (Details) - Stock Options [Member] - Directors, officers consultants and employees [Member] - $ / shares
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Options Available for Grant    
Options Available for Grant, Outstanding, Beginning Balance 3,805,774 4,145,774
Options Available for Grant, Additional stock reserved  
Options Available for Grant, Granted (2,000,000) (340,000)
Options Available for Grant, Exercised  
Options Available for Grant, Forfeited 1,359,069
Options Available for Grant, Expired  
Options Available for Grant, Outstanding, Ending Balance 3,164,843 3,805,774
Number of Options    
Number of Options, Outstanding, Beginning Balance 3,867,621 3,851,371
Number of Options, Outstanding, Additional stock reserved  
Number of Options, Granted 2,000,000 340,000
Number of Options, Exercised   (52,500)
Number of Options, Forfeited (1,359,069)
Number of Options, Expired   (271,250)
Number of Options, Outstanding, Ending Balance 4,508,552 3,867,621
Weighted Average Exercise Price per Option    
Weighted Average Exercise Price per Option, Outstanding, Beginning Balance $ 4.05 $ 3.11
Weighted Average Exercise Price per Option, Additional stock reserved  
Weighted Average Exercise Price per Option, Granted 0.97 1.18
Weighted Average Exercise Price per Option, Exercised   1.24
Weighted Average Exercise Price per Option, Forfeited 4.73
Weighted Average Exercise Price per Option, Expired   3.22
Weighted Average Exercise Price per Option, Outstanding, Ending Balance 2.48 4.05
Weighted Average Grant Date Fair Value per Option    
Weighted Average Grant Date Fair Value per Option, Outstanding, Beginning Balance 1.84 1.84
Weighted Average Grant Date Fair Value per Option, Additional stock reserved  
Weighted Average Grant Date Fair Value per Option, Granted 0.55 0.54
Weighted Average Grant Date Fair Value per Option, Exercised   0.68
Weighted Average Grant Date Fair Value per Option, Forfeited 1.94
Weighted Average Grant Date Fair Value per Option, Expired   1.58
Weighted Average Grant Date Fair Value per Option, Outstanding, Ending Balance $ 1.24 $ 1.84
Weighted Average Remaining Exercise Term in Months    
Weighted Average Remaining Exercise Term in Months, Outstanding, Beginning Balance 64 months 43 months
Weighted Average Remaining Exercise Term in Months, Granted 88 months 56 months
Weighted Average Remaining Exercise Term in Months, Forfeited 31 years  
Weighted Average Remaining Exercise Term in Months, Outstanding, Ending Balance 65 years 64 months