Long-Term Debt (Schedule Of Interest Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Long-Term Debt [Abstract]
Cash payments for interest			$ (30,780)	$ (31,612)
Commitment and other fees paid			1,156	893
Amortization of debt issuance costs and discount or premium on notes			1,487	1,404
Change in accrued interest			(5)	9
Other			7	(304)
Total interest expense	$ 16,566	$ 16,806	$ 33,425	$ 33,614