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Stock Options (Details) - Stock Options [Member] - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Number of Options    
Begining balance, Outstanding 3,120,000 1,615,000
Granted 1,441,250 2,040,000
Exercised (130,000) (485,000)
Expired (325,000) (50,000)
Ending balance, Outstanding 4,106,250 3,120,000
Exercisable 1,891,250  
Weighted average exercise price    
Beginning balance, Outstanding $ 1.12 $ 1.09
Granted 0.96 1.09
Exercised 1.27 0.89
Expired 1.34 1.08
Ending balance, Outstanding 1.04 $ 1.12
Exercisable $ 1.02  
Outstanding, Weighted average remaining contractual life (years) 3 years 2 months 12 days 3 years 7 months 6 days
Exercisable, Weighted average remaining contractual life (years) 2 years 10 months 25 days  
Exercisable, Aggregate intrinsic value $ 1,035,900