Debt and Other Long-Term Liabilities (Schedule Of Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Long-term Debt, Unclassified [Abstract]
Cash interest expense	$ 11,499	$ 9,773	$ 22,894	$ 18,135
Non-cash interest expense:
Amortization of debt discount	434	753	869	1,555
Amortization of deferred financing fees	258	463	516	967
Total non-cash interest expense	692	1,216	1,385	2,522
Total cash and non-cash interest expense	12,191	10,989	24,279	20,657
Loss from early extinguishment of debt	0	1,963	0	1,963
Total interest expense	$ 12,191	$ 12,952	$ 24,279	$ 22,620