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11. Stockholder's Equity (Details) (Warrant [Member], USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Beginning balance, shares | 1,934,667 | 600,000 | 725,000
Warrants issued, shares | 629,740 | 1,734,667 |
Warrants exercised, shares | (25,000) | (250,000) | (125,000)
Warrants expired, shares | (50,000) | (150,000) |
Ending balance, shares | 2,489,407 | 1,934,667 | 600,000
2014 | 1,207,750 |  |
2015 | 1,031,657 |  |
Thereafter | 250,000 |  |
Total | 2,489,407 |  |
Minimum [Member] |  |  |
Beginning balance, Exercise Prices | $ 0.25 | $ 0.30 | $ 0.20
Warrants granted, Exercise Prices | $ 1.20 | $ 2.50 | $ 0.30
Warrants exercised, Exercise Prices | $ 1.20 | $ 0.30 |
Warrants expired, Exercise Prices | $ 4.50 | $ 0.30 |
Ending balance Exercise Prices | $ 0.60 | $ 0.25 | $ 0.30
Maximum [Member] |  |  |
Beginning balance, Exercise Prices | $ 4.50 | $ 0.60 | $ 0.75
Warrants granted, Exercise Prices | $ 1.60 | $ 4.50 | $ 0.40
Warrants exercised, Exercise Prices |  | $ 2.50 |
Warrants expired, Exercise Prices |  | $ 0.40 |
Ending balance Exercise Prices | $ 4.50 | $ 4.50 | $ 0.60

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