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Stock based Compensation and Stock Option Plan Stock Based Plans Valuation Assumptions (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 0.55	$ 1.29	$ 0.83	$ 2.20
Stock Options [Member]
Expected Dividend Yield			0.00%	0.00%
Risk Free Interest Rate			0.62%	1.54%
Expected Option Life			5 years 1 month 6 days	5 years 1 month 6 days
Expected Volatility Factor			92.10%	77.90%

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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