• Filing Date: 2015-03-10
  • Form Type: 10-K
  • Description: Annual report
v2.4.1.9
Income Taxes - Summarized the Differences Between the Statutory Federal Income Tax Rate and the Effective Tax Rate (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]      
Income taxes at statutory rate $ 35,337us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ 37,258us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ 17,353us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State income taxes, net of federal tax benefits 3,601us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 3,802us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 1,799us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Other (640)us-gaap_IncomeTaxReconciliationOtherAdjustments (169)us-gaap_IncomeTaxReconciliationOtherAdjustments 271us-gaap_IncomeTaxReconciliationOtherAdjustments
Income tax expense $ 38,298us-gaap_IncomeTaxExpenseBenefit $ 40,891us-gaap_IncomeTaxExpenseBenefit $ 19,423us-gaap_IncomeTaxExpenseBenefit
Income taxes at statutory rate, percentage 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Increase (decrease) in income taxes resulting from:      
State income taxes, net of federal tax benefits, percentage 3.60%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 3.60%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 3.60%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Other, percentage (0.70%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments (0.20%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 0.60%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Income tax expense, percentage 37.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations 38.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 39.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations