Equity - Schedule of Share Based Payment Awards, Stock Options, Valuation Assumptions (Details) - USD ($)
$ / shares in Units, $ in Millions |
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Equity [Abstract] |
|
|
|
| Vested or Expected to Vest Stock Options and SARs |
736,851
|
|
|
| Vested and Expected to Vest Options and SARs, Exercisable, Weighted Average Exercise Price |
$ 26.59
|
|
|
| Options, SARs, and non-vested restricted stock Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value |
$ 8.1
|
$ 7.2
|
|
| Options and SARs Exercises in Period, Intrinsic Value |
0.9
|
$ 0.3
|
$ 3.8
|
| Compensation Cost Not yet Recognized |
$ 3.2
|
|
|
| Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition |
1 year 8 months 5 days
|
|
|
| Weighted Average Grant Date Fair Value of Options SARs and restricted stock awards |
$ 17.97
|
$ 21.11
|
$ 23.12
|
| Share-based Compensation Expense |
$ 3.3
|
$ 2.9
|
$ 3.0
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate |
1.20%
|
1.50%
|
0.60%
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term, Simplified Method |
P4Y
|
P4Y
|
P4Y
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate |
38.00%
|
49.70%
|
83.40%
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate |
2.00%
|
1.60%
|
1.50%
|
| Restricted Stock Awarded, Weighted Average Grant Date Fair Value |
$ 32.14
|
$ 33.88
|
$ 30.27
|