Income Taxes (Summary of Income Tax Benefit (Provision)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
U.S. Federal	$ (5,524)us-gaap_CurrentFederalTaxExpenseBenefit	$ 25,567us-gaap_CurrentFederalTaxExpenseBenefit	$ 55,928us-gaap_CurrentFederalTaxExpenseBenefit
State and local	3,573	976	59,390
Foreign	(220)us-gaap_CurrentForeignTaxExpenseBenefit	(200)us-gaap_CurrentForeignTaxExpenseBenefit
Total current	(2,171)us-gaap_CurrentIncomeTaxExpenseBenefit	26,343us-gaap_CurrentIncomeTaxExpenseBenefit	115,318us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred:
U.S. Federal	8,531	(26,981)	(3,325)
State and local	1,745	(1,203)	(18,678)
Total deferred	10,276us-gaap_DeferredIncomeTaxExpenseBenefit	(28,184)us-gaap_DeferredIncomeTaxExpenseBenefit	(22,003)us-gaap_DeferredIncomeTaxExpenseBenefit
Income tax benefit (provision)	$ 8,105us-gaap_IncomeTaxExpenseBenefit	$ (1,841)us-gaap_IncomeTaxExpenseBenefit	$ 93,315us-gaap_IncomeTaxExpenseBenefit

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

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