Income Taxes (Schedule Of Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Unrecognized tax benefits, beginning balance	$ 10,677	$ 9,803
Gross increases - prior-period tax positions	2,676	2,770
Gross increases - current-period tax positions	1,039	1,014
Settlements	(1,102)	(1,758)
Lapse of statute of limitations	(3,562)	(1,152)
Unrecognized tax benefits, ending balance	$ 9,728	$ 10,677