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Stock Options and Warrants (Summary of Options Outstanding by Price Range) (Details)
6 Months Ended
Jun. 30, 2018
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Number Outstanding | shares 12,445,000
Remaining Average Contractual Life 8 years 4 months 9 days
Weighted Average Exercise Price, Outstanding $ 0.06
Number Exercisable | shares 2,860,000
Weighted Average Exercise Price, Exercisable $ 0.19
Range of Exercise Price [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of Exercise Price, lower limit 0.017
Range of Exercise Price, upper limit $ 0.30
Number Outstanding | shares 12,445,000
Remaining Average Contractual Life 8 years 4 months 9 days
Weighted Average Exercise Price, Outstanding $ 0.06
Number Exercisable | shares 2,860,000
Weighted Average Exercise Price, Exercisable $ 0.19