Stock Compensation Plans (Schedule Of Share-Based Payment Award Activity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stock Compensation Plans [Abstract]
Outstanding at January 1, Number Of Options	5,473	73,413	126,155
Outstanding at January 1, Weighted Average Exercise Price	$ 5.01	$ 13.28	$ 13.60
Exercised, Number Of Options	(325)	(67,940)	(38,138)
Exercised, Weighted Average Exercise Price	$ 5.00	$ 13.95	$ 11.54
Adjustment, Number Of Options			253
Adjustment, Weighted Average Exercise Price			$ 5.00
Expired/Cancelled, Number Of Options	(5,148)		(14,857)
Expired/Cancelled, Weighted Average Exercise Price	$ 5.01		$ 19.99
Outstanding at December 31, Number Of Options	0	5,473	73,413
Outstanding at December 31, Weighted Average Exercise Price	$ 0.00	$ 5.01	$ 13.28
Outstanding at December 31, Weighted Average Remaining Contractual Term (in years)	0.00	0.05	2.33
Outstanding at December 31, Aggregate Intrinsic Value	$ 0	$ 234	$ 1,847
Options Exercisable at December 31, Number Of Options	0	5,473	73,413
Options Exercisable at December 31, Weighted Average Exercise Price	$ 0.00	$ 5.01	$ 13.28
Options Exercisable at December 31, Weighted Average Remaining Contractual Term (in years)	0.00	0.05	2.33
Options Exercisable at December 31, Aggregate Intrinsic Value	$ 0	$ 234	$ 1,847