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Income Taxes (Narratives) (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Income Tax Uncertainties [Abstract]    
Unrecognized tax benefits $ 0.4 $ 0.6
Maximum
   
Income Tax Uncertainties [Abstract]    
Unrecognized tax benefits, income tax penalties and interest accrued $ 0.1 $ 0.1
Open tax years 2012  
Minimum
   
Income Tax Uncertainties [Abstract]    
Open tax years 2008