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8. Stock Options and warrants (Tables)
9 Months Ended
Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]  
Stock options outstanding
    Options   Weighted Avg.
Exercise Price
 
December 31, 2014    21,052,030   $0.30 
Granted    888,552    0.46 
Exercised           
Forfeited    (234,070)   0.72 
September 30, 2015    21,706,512   $0.30 
             
Options outstanding by Per Share Price
    Outstanding Options   Exercisable Options
Option
Exercise Price
Per Share
  Shares     Life
(Years)
  Weighted
Average
Exercise
Price
  Shares     Weighted
Average
Exercise
Price
$ 0.21 - $ 0.99     21,443,283     5.5   $0.29     19,946,498     $0.28
$ 1.00 - $ 1.99     263,229     4.5   $1.22     263,229     $1.22
      21,706,512     5.5   $0.30     20,209,727     $0.30
Warrants outstanding
    Warrants   Weighted Avg.
Exercise Price
 
December 31, 2014    5,692,087   $0.37 
Granted    916,667    0.30 
Exercised    (200,000)   0.25 
Cancelled    (2,731,050)   0.35 
September 30, 2015    3,677,704   $0.37 
             
Warrants outstanding by Per Share Price
    Exercisable Warrants   Exercisable Warrants 
Warrant
Exercise
Price
Per Share
   Shares   Life
(Years)
   Weighted
Average
Exercise
Price
   Shares   Weighted
Average
Exercise
Price
 
$ 0.25 - $ 0.99    3,557,704    3.8   $0.35    3,347,704   $0.33 
$ 1.00 - $ 1.99    120,000    0.3   $1.01    120,000   $1.01 
     3,677,704    3.7   $0.37    3,467,704   $0.35