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Stock-Based Compensation (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Expected dividends 0.00% 0.00%
Expected volatility 110.00% 174.00%
Risk fee interest rate 0.26% 0.71%
Expected life of option (in years) 2 years 5 years
Expected forfeitures 0.00% 0.00%
Minimum [Member]
   
Exercise price 1.69 0.49
Expected volatility 108.00% 175.00%
Risk fee interest rate 0.37% 1.30%
Expected life of option (in years) 5 years 5 years
Maximum [Member]
   
Exercise price 2.47 2.22
Expected volatility 174.00% 188.00%
Risk fee interest rate 1.98% 3.58%
Expected life of option (in years) 10 years 7 years