Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Narrative) (Details)

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Income Taxes (Narrative) (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Income Tax Disclosure [Abstract]        
Income Tax Expense (Benefit) $ 24,604,000 $ 17,408,000 $ 65,207,000 $ 63,098,000
Effective Income Tax Rate, Continuing Operations 38.40% 29.30% 38.40% 35.10%
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount   3,700,000    
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount     $ 3,100,000