Stock-Based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended			0 Months Ended		9 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 plan	Sep. 30, 2012	Sep. 30, 2013 Stock Incentive Plan 2011	May 08, 2013 Subsequent Event [Member] Stock Incentive Plan 2011	Sep. 25, 2013 Stock Appreciation Rights (SARs) [Member]	Sep. 30, 2013 Stock Appreciation Rights (SARs) [Member]	Oct. 07, 2013 Stock Appreciation Rights (SARs) [Member]	Sep. 30, 2013 Stock Options	Sep. 30, 2013 Scenario, Forecast [Member] Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 1.9	$ 1.9	$ 5.1	$ 5.5
Number of share-based compensation plans			5
Number of shares available for grant					2,082,057
Additional shares authorized for grant						1,543,000
Total number of shares authorized						6,043,000
Options expiration term								5 years		10 years
Grants in period, weighted average grant date fair value (dollars per share)			$ 1.61
Total unrecognized compensation expense related to non-vested stock										$ 3.7
Total compensation cost not yet recognized, period for recognition										1 year 7 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period							2,900,000
Percentage of options that vest if minimum trading period price is reached								50.00%			50.00%
Vesting period for minimum stock price average								30 days			30 days
Minimum average share price for vesting (in dollars per share)								$ 10			$ 15
Share price (in dollars per share)									$ 4.03