Summary of Significant Accounting Policies (Details 2) (Common stock warrant, USD $)
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12 Months Ended |
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Dec. 31, 2012
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Assumptions used to calculate fair value of common stock warrant liability using Monte-Carlo simulation on a Black-Scholes lattice model | |
Volatility (as a percent) | 80.00% |
Stock Price (in dollars per share) | $ 7.17 |
Dividend Yield (as a percent) | 0.00% |
Minimum
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Assumptions used to calculate fair value of common stock warrant liability using Monte-Carlo simulation on a Black-Scholes lattice model | |
Exercise Price (in dollars per share) | $ 4 |
Term | 8 years 1 month 6 days |
Risk-Free Rate (as a percent) | 1.60% |
Maximum
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Assumptions used to calculate fair value of common stock warrant liability using Monte-Carlo simulation on a Black-Scholes lattice model | |
Exercise Price (in dollars per share) | $ 5 |
Term | 9 years |
Risk-Free Rate (as a percent) | 1.80% |