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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Sep. 30, 2014
Deferred tax asset valuation allowance
State
Income Tax Disclosure      
Effective income tax rate 40.10% 45.70%  
Valuation Allowance      
Increase (decrease) in valuation allowance     $ 6.4