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Share-based Compensation and Non-Qualified Deferred Compensation Plan (Tables)
6 Months Ended
Jun. 30, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Summary of Share Incentive Plans
A summary of activity under our share incentive plans for the six months ended June 30, 2023 is shown below:
Nonvested
Share
Awards
Outstanding
Weighted
Average
Exercise /  Grant Price
Nonvested share awards outstanding at December 31, 2022164,647 $132.99 
Granted219,250 117.02 
Vested(183,645)120.81 
Forfeited(4,450)131.75 
Total nonvested share awards outstanding at June 30, 2023195,802 $126.56