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Derivative Financial Instruments (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Summary of Derivative Instruments [Abstract]    
Notional Amount of Derivatives $ 29invest_DerivativeNotionalAmount  
Derivative Asset 0.3us-gaap_DerivativeAssets  
Derivative Liabilities (less than) $ 0.1us-gaap_DerivativeLiabilities $ 0.2us-gaap_DerivativeLiabilities