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14. Stockholders' deficit (Tables)
6 Months Ended
Jun. 30, 2015
Equity [Abstract]  
Stockholders Deficit
   Number of Options and Warrants  Weighted Average Exercise Price Per Share
             
 Outstanding at December 31, 2014   $6,780,000   $0.139 
             
 Granted   $—     $—   
 Cancelled/forfeited    —      —   
 Expired   $—    $—  
 Exercised    —      —   
 Outstanding at December 31, 2014 and June 30, 2015   $6,780,000   $0.139