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

9 Months Ended

Sep. 30, 2019

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, 2019 is shown below:

	Nonvested Share Awards Outstanding		Weighted Average Exercise /  Grant Price
Nonvested share awards outstanding at December 31, 2018	390,681		$	79.82
Granted	198,896		98.78
Vested	(308,514	)	82.65
Forfeited	(14,651	)	85.83
Total nonvested share awards outstanding at September 30, 2019	266,412		$	90.37