Income Taxes (Summary Of Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011
Income Taxes [Abstract]
Balance at January 1,	$ 645	$ 349	$ 265
Additions based on tax positions related to the current year		31
Additions for tax positions of prior years		265
Reductions for tax positions of prior years	(380)
Balance at December 31,	$ 265	$ 645	$ 265