Long-Term Debt (Schedule Of Interest Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Long-Term Debt [Abstract]
Cash payments for interest			$ 49,689	$ 50,758
Commitment and other fees paid			1,719	1,351
Amortization of debt issuance costs and discount or premium on notes			2,232	2,134
Change in accrued interest			(3,413)	(3,376)
Other			26	(326)
Total interest expense	$ 16,828	$ 16,927	$ 50,253	$ 50,541