Income Taxes (Narratives) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Tax Examination [Line Items]        
Liability For Uncertain Tax Positions Total $ 0      
Change in Liability for Uncertain Tax Positions 0 0 0  
Unrecognized Tax Benefits 0      
Unrecognized Tax Benefit Significant Change Expected In Next Twelve Months 0      
Income Tax Examination, Penalties and Interest Expense 0 0 0  
Income Tax Amendment, Tax Receivable Increase       15.4
Income Tax Amendment Interest Benefit Increase     0.5  
Operating Loss Carryforwards 0      
Taxes Payable $ 0.6      
Minimum [Member] | Federal [Member]
        
Income Tax Examination [Line Items]        
Income Tax Examination, Year under Examination 2006      
Maximum [Member] | Federal [Member]
        
Income Tax Examination [Line Items]        
Income Tax Examination, Year under Examination 2013