Stock-Based and Other Compensation Plans	3 Months Ended
Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments and Other Compensation [Text Block]	Stock-Based and Other Compensation Plans The Company grants stock options, stock appreciation rights (“SARs”), long-term incentive plan performance-based awards, and time-based restricted shares, some of which are cash-settled awards with the final payment indexed to the percentage change in the Company’s stock price from the date of grant. For the three months ended March 31, 2015, the Company recognized stock-based compensation expense of $2.0 million, inclusive of $0.4 million of mark-to-market expense on awards indexed to the Company's stock price. For the three months ended March 31, 2014, the Company recognized stock-based compensation expense of $0.9 million, inclusive of a $0.2 million mark-to-market gain on awards indexed to the Company's stock price. As of March 31, 2015, there was $15.7 million of unrecognized compensation expense related to these awards. The remaining compensation expense for the stock options, SARs and restricted awards is expected to be recognized over a weighted-average period of approximately two years, and the remaining expense for long-term incentive plan performance-based awards will be recognized within approximately two years. The Company also has deferred compensation plans for its Board of Directors and certain executives. Under these plans, participants can elect to invest their deferrals in the Company’s common stock. At March 31, 2015 and 2014, the number of common shares deferred under these plans was 0.4 million and 0.6 million, respectively. As these awards can be settled in cash, the Company records compensation costs each period based on the change in the Company’s stock price. For the three months ended March 31, 2015, the Company recognized expense of $0.1 million. For the three months ended March 31, 2014, the Company recognized nominal expense.

Stock-Based and Other Compensation Plans

The Company grants stock options, stock appreciation rights (“SARs”), long-term incentive plan performance-based awards, and time-based restricted shares, some of which are cash-settled awards with the final payment indexed to the percentage change in the Company’s stock price from the date of grant.

For the three months ended March 31, 2015, the Company recognized stock-based compensation expense of $2.0 million, inclusive of $0.4 million of mark-to-market expense on awards indexed to the Company's stock price. For the three months ended March 31, 2014, the Company recognized stock-based compensation expense of $0.9 million, inclusive of a $0.2 million mark-to-market gain on awards indexed to the Company's stock price. As of March 31, 2015, there was $15.7 million of unrecognized compensation expense related to these awards. The remaining compensation expense for the stock options, SARs and restricted awards is expected to be recognized over a weighted-average period of approximately two years, and the remaining expense for long-term incentive plan performance-based awards will be recognized within approximately two years.

The Company also has deferred compensation plans for its Board of Directors and certain executives. Under these plans, participants can elect to invest their deferrals in the Company’s common stock. At March 31, 2015 and 2014, the number of common shares deferred under these plans was 0.4 million and 0.6 million, respectively. As these awards can be settled in cash, the Company records compensation costs each period based on the change in the Company’s stock price. For the three months ended March 31, 2015, the Company recognized expense of $0.1 million. For the three months ended March 31, 2014, the Company recognized nominal expense.