Income Taxes (Schedule Of Income Tax Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Federal current	$ 51,260us-gaap_CurrentFederalTaxExpenseBenefit	$ 55,227us-gaap_CurrentFederalTaxExpenseBenefit	$ 69,590us-gaap_CurrentFederalTaxExpenseBenefit
State current	6,606	6,616	10,088
Foreign current	220us-gaap_CurrentForeignTaxExpenseBenefit	1,472us-gaap_CurrentForeignTaxExpenseBenefit	(478)us-gaap_CurrentForeignTaxExpenseBenefit
Current income tax expense (benefit), total	58,086us-gaap_CurrentIncomeTaxExpenseBenefit	63,315us-gaap_CurrentIncomeTaxExpenseBenefit	79,200us-gaap_CurrentIncomeTaxExpenseBenefit
Federal deferred	4,503	(9,668)	(8,630)
State deferred	535	1,279	(438)
Deferred income tax expense (benefit), total	5,038us-gaap_DeferredIncomeTaxExpenseBenefit	(8,389)us-gaap_DeferredIncomeTaxExpenseBenefit	(9,068)us-gaap_DeferredIncomeTaxExpenseBenefit
Total income tax expense	$ 63,124us-gaap_IncomeTaxExpenseBenefit	$ 54,926us-gaap_IncomeTaxExpenseBenefit	$ 70,132us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.