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Stock-based Compensation (Details Textual) (USD $)
In Millions, except Share data, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Dec. 31, 2010
Sep. 30, 2012
Maximum [Member]
Dec. 31, 2011
Maximum [Member]
Dec. 31, 2011
Minimum [Member]
Sep. 03, 2009
Minimum [Member]
Stock-based Compensation (Textual) [Abstract]                
Issuance of common stock, share 99,194,990   95,678,255 20,375,500 30,000,000 15,000,000 4,000,000 0
Stock Based Compensation (Additional Textual) [Abstract]                
Options available for grant 16,737,750              
Fair value of shares vested $ 1.0   $ 2.5          
Total unrecognized compensation cost 1.0   1.4          
Cost expected to recover over a weighted-average period of time 10 months 24 days   1 year 6 months          
Total unrecognized compensation expense $ 0.1   $ 0.1          
Fair market value of options granted $ 0.23 $ 0.34    $ 0.53        
Number of shares, Exercised 0   600,000 0        
Common stock issuance     246,141