Earnings per Share - Anti-dilutive Securities (Details) - shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Restricted Stock Awards | |||
| Earnings per Share | |||
| Antidilutive securities (in shares) | 27,430 | ||
| Restricted Stock Unit Awards | |||
| Earnings per Share | |||
| Antidilutive securities (in shares) | 1,249,825 | 757,245 | 54,656 |
| Performance Share Unit Awards | |||
| Earnings per Share | |||
| Antidilutive securities (in shares) | 1,035,205 | 539,188 | 192,998 |
| Class B common stock | |||
| Earnings per Share | |||
| Economic interests/rights (as a percent) | 0.00% | ||
| Series A preferred stock | |||
| Earnings per Share | |||
| Antidilutive securities (in shares) | 28,880,824 | ||