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Income Taxes (Income Tax Reconciliation) (Details)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]      
Statutory rate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State and local taxes 1.50%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 1.70%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 0.70%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Other 0.70%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 0.40%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 2.50%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Effective rate 36.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations 36.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations 37.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations