Equity and Stock-Based Compensation (Stock Option Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of year, (number of options)	5,960
Exercised (number of options)	(6)
Forfeited/Expired (number of options)	(1,525)
Outstanding, end of year, (number of options)	4,429
Options exercisable at end of year (number of options)	4,201
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning of year, weighted average exercise price per option (dollars per option)	$ 20.83
Exercised, weighted average exercise price per option (dollars per option)	$ 7.51
Forfeited/Expired, weighted average exercise price per option (dollars per option)	$ 18.16
Outstanding, end of year, weighted average exercise price per option (dollars per option)	$ 21.76
Options exercisable at end of year, weighted average exercise price per option (dollars per option)	$ 22.51