Stockholders' Equity Detail on warrants issued (Details) (USD $)	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Class of Warrant or Right [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	3,900,000		18,395,963
Stock Issued During Period, Shares, New Issues	5,000,000	5,100,000
Warrants [Member]
Class of Warrant or Right [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	53.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	2.60%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	8.00
Share Based Compensation Arrangement by Share Based Payment Award Grants in Period Weighted Average Grant Date Fair Value	0.72

The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior.

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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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- Definition

Number of new stock issued during the period.

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