Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details 2)

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Summary of Significant Accounting Policies (Details 2)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Stock-Based Compensation    
Expected term (in years) 4 years 4 years
Expected volatility 117.20% 90.90%
Risk free rate 0.61% 1.27%
Expected dividends 0.00% 0.00%