Debt and Other Long-Term Liabilities (Schedule Of Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Long-term Debt, Unclassified [Abstract]
Cash interest expense	$ 11,297	$ 11,519	$ 34,191	$ 29,654
Non-cash interest expense:
Amortization of debt discount	435	616	1,304	2,171
Amortization of deferred financing fees	258	285	774	1,252
Total non-cash interest expense	693	901	2,078	3,423
Total cash and non-cash interest expense	11,990	12,420	36,269	33,077
Loss from early extinguishment of debt	0	55	0	2,018
Total interest expense	$ 11,990	$ 12,475	$ 36,269	$ 35,095