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Income Tax (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Income Tax (Textual) [Abstract]        
Income tax benefit percentage of pre-tax loss 15.40% 30.30% 39.20% 43.50%
Increase and decrease tax valuation allowances effective income tax rate     33.60%  
Tax Valuation Allowance, Net     $ 33.6