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12. Stockholder's Equity (Tables)
 3 Months Ended
Mar. 31, 2015
Equity [Abstract]  
Common Stock Warrant
    Number of Warrants     Exercise Prices  
Balance, December 31, 2012     1,934,667     $ .25 - $4.50  
Warrants issued     629,740     $ 1.20-$1.60  
   Warrants exercised     (25,000 )   $ 1.20  
   Warrants expired     (50,000 )   $ 4.50  
Balance, December 31, 2013     2,489,407     $ 0.25 - $4.50  
Warrants exercised     (310,625 )   $ 1.20-$1.60  
   Warrants expired     (1,415,865 )        
Balance, December 31, 2014     762,917     $ 0.25 - $4.50  
   No activity     -          
Balance, March 31, 2015     726,917     $ 0.25 - $4.50  
                 
The above common stock warrants expire as follows:          
Year ended December 31:                
2015     476,917     $ 4.50  
Thereafter     250,000     $ 0.25  
      726,917