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8. Stock Options and warrants (Tables)
3 Months Ended
Mar. 31, 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   738,522    0.48 
Exercised        
Forfeited   (29,070)   0.91 
September 30, 2014   21,761,512   $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   21,498,283   6.0  $0.29   19,414,021   $0.28
$ 1.00 - $ 1.99   263,229   5.0  $1.22   263,229   $1.22
    21,761,512   6.0  $0.30   19,677,250   $0.29
Warrants outstanding
   Warrants   Weighted Avg.
Exercise Price
 
December 31, 2014   5,692,087   $0.36 
Granted        
Exercised   (200,000)   0.25 
Cancelled   (100,000)   0.25 
Outstanding, March 31, 2015   5,392,087   $0.36 
Warrants outstanding by Per Share Price
   Outstanding Warrants  Exercisable Warrants
Warrant
Exercise Price Per Share
   Shares   Life
(Years)
  Weighted
Average Exercise
Price
   Shares   Weighted
Average Exercise
Price
$ 0.25 - $ 0.99   5,272,087   2.8  $0.35   4,927,087   $0.34
$ 1.00 - $ 1.99   120,000   0.8  $1.01   120,000   $1.01
    5,392,087   2.8  $0.36   5,047,087   $0.36