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Goodwill And Intangible Assets (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]      
Amortization expense of intangibles assets $ 2.0us-gaap_AmortizationOfIntangibleAssets $ 2.2us-gaap_AmortizationOfIntangibleAssets $ 2.2us-gaap_AmortizationOfIntangibleAssets
Trade Name [Member]      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets estimated useful life 45 years    
Other Intangible Assets [Member]      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets estimated useful life 10 years    
Maximum [Member] | Beneficial Leases [Member]      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets estimated useful life 30 years