Stock-Based Compensation (Stock Options - Range of Exercise Prices) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Vested	24,000
Options Outstanding, Unvested (in shares)	304,000
Weighted Average Exercise Price Per Share (in dollars per share)	$ 30.67
Weighted Average Remaining Contractual Life In Years	4 years 8 months 19 days
Options Exercisable, Number Exercisable	24,000
Weighted Average Exercise Price Per Share (in dollars per share)	$ 16.96
Aggregate intrinsic value of outstanding options (in dollars)	$ 0.2	[1]	$ 0.2	[1]	$ 3.3	[1]	$ 6.7	[1]
Weighted-average remaining contractual life of vested and currently exercisable options (in years)	3 months 29 days
Aggregate intrinsic value of vested and currently exercisable options (in dollars)	$ 0.2
Shares Under Option
Outstanding at the beginning of the period (in shares)	589,000
Forfeited (in shares)	(285,000)
Outstanding at the end of the period (in shares)	304,000
Weighted Average Grant-Date Fair Value
Outstanding at the beginning of the period (in dollars per share)	$ 10.90
Forfeited (in dollars per share)	$ 10.90
Outstanding at the end of the period (in dollars per share)	$ 10.90
Range of Exercisable Prices $16.96 - $16.96
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercisable Prices, low end of range (in dollars per share)	$ 16.96
Range of Exercisable Prices, high end of range (in dollars per share)	$ 16.96
Options Outstanding, Vested	24,000
Options Outstanding, Unvested (in shares)	0
Weighted Average Exercise Price Per Share (in dollars per share)	$ 16.96
Weighted Average Remaining Contractual Life In Years	3 months 29 days
Options Exercisable, Number Exercisable	24,000
Weighted Average Exercise Price Per Share (in dollars per share)	$ 16.96
Range of Exercisable Prices $31.75 - $31.75
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercisable Prices, low end of range (in dollars per share)	$ 31.75
Range of Exercisable Prices, high end of range (in dollars per share)	$ 31.75
Options Outstanding, Vested	0
Options Outstanding, Unvested (in shares)	304,000
Weighted Average Exercise Price Per Share (in dollars per share)	$ 31.75
Weighted Average Remaining Contractual Life In Years	5 years 0 months 26 days
Options Exercisable, Number Exercisable	0
Weighted Average Exercise Price Per Share (in dollars per share)	$ 0.00

[1] Intrinsic value is defined as the difference between the current market value and the exercise price, for those options where the market price exceeds the exercise price.