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Stock Options and Warrants - Schedule of Fair Value Assumptions (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted average fair value of options granted	$ 1.24	$ 1.74
Expected dividend yield	0.00%	0.00%
Expected volatility	109.40%	108.30%
Risk—free interest rate	0.67%	1.15%
Expected life of options	5 years	5 years

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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