Income Taxes (Schedule Of Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Balance at January 1,	$ 24,291	$ 24,208	$ 27,605
Additions related to positions taken this year	0	164	61
Additions for tax positions of prior years	7
Reductions for tax positions of prior years	0	(48)	(3,381)
Reductions for tax positions of prior years lapse of statute	0	(33)	(77)
Balance at December 31,	$ 24,298	$ 24,291	$ 24,208