Income Taxes (Schedule Of Changes In Gross Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Expense (Benefit) [Abstract]
Beginning balance	$ 3,122	$ 3,141	$ 4,873
Reductions for tax positions for prior years	0	0	(26)
Reductions due to tax settlements	0	0	(1,389)
Reductions due to statutes of limitations expiring	0	(19)	(317)
Ending balance	$ 3,122	$ 3,122	$ 3,141