Stockholders' Equity (Summary Of The Option And Stock Appreciation Rights Activity) (Details) (USD $)	9 Months Ended	12 Months Ended	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012 $1.63 - $116.40 [Member]	Sep. 30, 2013 $0.00 - $0.00 [Member]	Sep. 30, 2013 $6.80 [Member]	Sep. 30, 2013 $8.10 - $68.60 [Member]	Sep. 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	373,899
Number of Options/SARs, Exercised	(145)
Number of Options/SARs, Forfeited	(134,765)
Number of Options/SARs, Outstanding, September30, 2013	238,989
Weighted Average Exercise Price per Share, Outstanding, December 31, 2012	$ 43.90
Weighted Average Exercise Price per Share, Exercised	$ 6.80
Weighted Average Exercise Price per Share, Forfeited	$ 38.75
Weighted Average Exercise Price per Share, Outstanding, September 30, 2013	$ 46.83
Range of Exercise Price, Lower limit		$ 1.63	$ 0.00	$ 6.80	$ 1.69	$ 1.63
Range of Exercise Price, Upper limit		$ 116.40	$ 0.00		$ 68.60	$ 116.40