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 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Income Tax Disclosure [Abstract]        
Income Tax Expense (Benefit) $ 24,617,000 $ 26,367,000 $ 40,604,000 $ 45,692,000
Effective Income Tax Rate, Continuing Operations 37.60% 37.90% 38.40% 37.90%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount     $ 3,100,000