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Summary of Significant Accounting Policies (Details)	9 Months Ended
Summary of Significant Accounting Policies (Details)	Sep. 30, 2012	Sep. 30, 2011
Stock options grants
Risk-free interest rate	0.66%
Expected dividend yield
Expected life	4 years 5 months 1 day	6 years 9 months 18 days
Expected volatility	64.70%
Expected forfeitures	0.00%	0.00%
Maximum [Member]
Stock options grants
Risk-free interest rate		2.43%
Expected volatility		79.30%
Minimum [Member]
Stock options grants
Risk-free interest rate		1.53%
Expected volatility		58.80%

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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