Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Narrative) (Details)

v2.4.1.9
Income Taxes (Narrative) (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Income Tax Disclosure [Abstract]    
Income Tax Expense (Benefit) $ 20,023,000us-gaap_IncomeTaxExpenseBenefit $ 15,987,000us-gaap_IncomeTaxExpenseBenefit
Effective Income Tax Rate, Continuing Operations 37.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations 39.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount   $ 3,100,000us-gaap_IncomeTaxReconciliationNondeductibleExpense