Debt and Other Long-Term Liabilities (Schedule Of Interest Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]
Cash interest expense	$ 45,507	$ 41,562	$ 25,289
Non-cash interest expense:
Amortization of debt discount	1,731	2,606	4,674
Amortization of deferred financing fees	1,030	1,510	1,720
Other	0	0	(550)
Total non-cash interest expense	2,761	4,116	5,844
Total cash and non-cash interest expense	48,268	45,678	31,133
(Gain) loss from early extinguishment of debt	(5,854)	2,018	6,013
Total interest expense	$ 42,414	$ 47,696	$ 37,146