Debt and Other Long-Term Liabilities (Schedule Of Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Long-term Debt, Unclassified [Abstract]
Cash interest expense	$ 10,141	$ 11,499	$ 20,795	$ 22,894
Amortization of debt discount and deferred financing fees	613	692	1,251	1,385
Total cash and non-cash interest expense	10,754	12,191	22,046	24,279
Gain from early extinguishment of debt	(418)	0	(11,446)	0
Total interest expense	$ 10,336	$ 12,191	$ 10,600	$ 24,279