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Income Taxes (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Effective tax rate 38.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations 39.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations  
Statutory income tax rate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate   35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate