v2.4.1.9
Income Taxes (Details 2)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Reconciliation Between Statutory And Effective Tax Rates [Abstract]      
Federal statutory tax rate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State statutory rates, net of federal benefits 3.10%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 3.10%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 3.10%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Deferred tax adjustments 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationDeductions (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductions (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductions
Tax credits (0.40%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits (0.20%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits (0.50%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits
Other tax rate adjustments 0.20%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 0.10%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Effective tax rate 37.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations 37.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations 37.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations