Debt And Other Long-Term Liabilities (Schedule Of Interest Expense Related To Notes) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Debt And Other Long-Term Liabilities [Abstract]
Contractual interest expense	$ 2,000	$ 2,000	$ 6,000	$ 6,000
Amortization of debt discount	1,648	1,519	4,857	4,477
Total interest expense related to the Notes	$ 3,648	$ 3,519	$ 10,857	$ 10,477