Share-based Compensation and Non-Qualified Deferred Compensation Plan (Tables)

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement, Noncash Expense [Abstract]

Summary of Share Incentive Plans

A summary of activity under our share incentive plans for the nine months ended September 30, 2021 is shown below:

	Nonvested Share Awards Outstanding	Weighted Average Exercise /  Grant Price
Nonvested share awards outstanding at December 31, 2020	239,728	$	103.48
Granted	187,933	105.63
Vested	(231,280)	101.96
Forfeited	(9,373)	106.67
Total nonvested share awards outstanding at September 30, 2021	187,008	$	107.36