Income Taxes (Reconciliation Of Beginning And Ending Amount Of Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of Unrecognized Tax Benefits, Excluding Interest [Roll Forward]
Balance at beginning of year	$ 664	$ 630	$ 514
Additions based on tax positions related to the current year	0	225	191
Additions for tax positions of prior years	18	0	135
Reductions for tax positions of prior years	0	(191)	(210)
Balance at end of year	$ 682	$ 664	$ 630