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Share-based Compensation and Non-Qualified Deferred Compensation Plan (Tables) | 3 Months Ended
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Mar. 31, 2020
Share-based Payment Arrangement, Noncash Expense [Abstract] |
Summary of Share Incentive Plans | A summary of activity under our share incentive plans for the three months ended March 31, 2020 is shown below:
| Nonvested Share Awards Outstanding |  | Weighted Average Exercise / Grant Price
Nonvested share awards outstanding at December 31, 2019 | 264,654 |  |  | $ | 90.44 |
Granted | 157,948 |  |  | 117.70 |
Vested | (174,846 | ) |  | 96.34 |
Forfeited | (1,752 | ) |  | 102.24 |
Total nonvested share awards outstanding at March 31, 2020 | 246,004 |  |  | $ | 103.67 |

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