Annual report pursuant to Section 13 and 15(d)

14. Warrants (Details)

v3.3.1.900
14. Warrants (Details) - $ / shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Common stock warrants outstanding    
Exercise Price Minimum $ 0.50  
Exercise Price Maximum $ 3.30  
Number outstanding 25,707,217  
Weighted Average Remaining Contractual Life (years) 3 years 6 months  
Number Exercisable 3,420,458 3,095,458
Weighted Average Exercise Price $ 2.05 $ 2.31
Warrant [Member]    
Common stock warrants outstanding    
Exercise Price $ 3.30  
Number outstanding 11,364  
Weighted Average Remaining Contractual Life (years) 4 months 10 days  
Weighted Average Exercise Price $ 3.30  
Number Exercisable 11,364  
Weighted Average Exercise Price $ 3.30  
Warrant One [Member]    
Common stock warrants outstanding    
Exercise Price $ 1.25  
Number outstanding 26,302  
Weighted Average Remaining Contractual Life (years) 8 months 1 day  
Weighted Average Exercise Price $ 1.25  
Number Exercisable 26,302  
Weighted Average Exercise Price $ 1.25  
Warrant Two [Member]    
Common stock warrants outstanding    
Exercise Price $ 1.00  
Number outstanding 1,642,680  
Weighted Average Remaining Contractual Life (years) 1 year 5 months 9 days  
Weighted Average Exercise Price $ 1.00  
Number Exercisable 1,642,680  
Weighted Average Exercise Price $ 1.00  
Warrant Three [Member]    
Common stock warrants outstanding    
Exercise Price $ 0.87  
Number outstanding 1,303,300  
Weighted Average Remaining Contractual Life (years) 3 years 4 months 10 days  
Weighted Average Exercise Price $ 0.87  
Number Exercisable 1,303,300  
Weighted Average Exercise Price $ 0.87  
Warrant Four [Member]    
Common stock warrants outstanding    
Exercise Price $ 0.65  
Number outstanding 515,000  
Weighted Average Remaining Contractual Life (years) 2 years 9 months 29 days  
Weighted Average Exercise Price $ 0.65  
Number Exercisable 515,000  
Weighted Average Exercise Price $ 0.65  
Warrant Five [Member]    
Common stock warrants outstanding    
Exercise Price $ 0.50  
Number outstanding 12,743,728  
Weighted Average Remaining Contractual Life (years) 3 years 7 months 13 days  
Weighted Average Exercise Price $ 0.50  
Number Exercisable 12,743,728  
Weighted Average Exercise Price $ 0.50  
Warrant Six [Member]    
Common stock warrants outstanding    
Exercise Price $ 0.48  
Number outstanding 577,750  
Weighted Average Remaining Contractual Life (years) 2 years 9 months 7 days  
Weighted Average Exercise Price $ 0.48  
Number Exercisable 577,750  
Weighted Average Exercise Price $ 0.48  
Warrant Seven [Member]    
Common stock warrants outstanding    
Exercise Price $ 0.35  
Number outstanding 8,887,093  
Weighted Average Remaining Contractual Life (years) 3 years 9 months 26 days  
Weighted Average Exercise Price $ 0.35  
Number Exercisable 8,887,093  
Weighted Average Exercise Price $ 0.35