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10. Stockholder's Equity (Details) (Warrant [Member], USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Beginning balance, shares 1,934,667 600,000 725,000
Warrants issued, shares   1,734,667  
Warrants exercised, shares   (250,000) (125,000)
Warrants expired, shares   (150,000)  
Ending balance, shares 1,934,667 1,934,667 600,000
2013 50,000    
2014 1,157,750    
2015 476,917    
Thereafter 250,000    
Total 1,934,667    
Minimum [Member]
      
Beginning balance, Exercise Prices 0.25 0.30 0.20
Warrants granted, Exercise Prices   2.50  
Warrants exercised, Exercise Prices   0.30 0.30
Warrants expired, Exercise Prices   0.30  
Ending balance Exercise Prices 0.25 0.25 0.30
Maximum [Member]
      
Beginning balance, Exercise Prices 4.50 0.60 0.75
Warrants granted, Exercise Prices   4.50  
Warrants exercised, Exercise Prices   2.50 0.40
Warrants expired, Exercise Prices   0.40  
Ending balance Exercise Prices 4.50 4.50 0.60