Income Taxes (Schedule Of Total Provision For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Current taxes, Federal	$ 8,594us-gaap_CurrentFederalTaxExpenseBenefit	$ 15,845us-gaap_CurrentFederalTaxExpenseBenefit	$ 2,084us-gaap_CurrentFederalTaxExpenseBenefit
Current taxes, State	784	146	(1,388)
Current taxes	9,378us-gaap_CurrentIncomeTaxExpenseBenefit	15,991us-gaap_CurrentIncomeTaxExpenseBenefit	696us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred taxes, Federal	68,360	87,839	13,768
Deferred taxes, State	8,925	12,893	1,762
Deferred taxes	77,285us-gaap_DeferredIncomeTaxExpenseBenefit	100,732us-gaap_DeferredIncomeTaxExpenseBenefit	15,530us-gaap_DeferredIncomeTaxExpenseBenefit
Total provision	$ 86,663us-gaap_IncomeTaxExpenseBenefit	$ 116,723us-gaap_IncomeTaxExpenseBenefit	$ 16,226us-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.