Stockholders' Equity (Summary Of The Option And Stock Appreciation Rights Activity) (Details) (USD $)		12 Months Ended	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012 $1.63 - $116.40 [Member]	Jun. 30, 2013 $0.00 - $0.00 [Member]	Jun. 30, 2013 $0.00 - $0.00 [Member]	Jun. 30, 2013 $8.10 - $68.60 [Member]	Jun. 30, 2013 $1.63 - $116.40 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Options/SARs, Outstanding, December 31, 2012	280,652
Number of Options/SARs, Forfeited					(93,247)
Number of Options/SARs, outstanding, June 30, 2013	280,652	373,899				280,652
Weighted Average Exercise Price per Share, Outstanding, December 31, 2012	$ 45.22
Weighted Average Exercise Price per Share, Forfeited					$ 39.94
Weighted Average Exercise Price per Share, Outstanding, June 30, 2013	$ 45.22	$ 43.90				$ 45.22
Range of Exercise Price, Lower limit		$ 1.63	$ 0.00	$ 0.00	$ 8.10	$ 1.63
Range of Exercise Price, Upper limit		$ 116.40	$ 0.00	$ 0.00	$ 68.60	$ 116.40