Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement, Noncash Expense [Abstract]

Summary Of Restricted Stock Activity

A summary of restricted stock unit activity during the nine months ended September 30, 2020 is presented below:

Restricted Stock Units	Grants	Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value ($000)
Outstanding at January 1, 2020	1,101,781	$	53.30
Granted	65,041	35.26
Vested	(80,872)	44.40
Forfeited	(70,884)	53.51
Converted from performance share units	19,450	38.13
Outstanding at September 30, 2020	1,034,516	52.41		$	20,390

Summary Of Performance Share Unit Activity

A summary of performance share unit activity and changes during the nine months ended September 30, 2020 is presented below:

Performance Share Units	Grants
Outstanding at January 1, 2020	375,588
Vested	(12,129)
Forfeited	(18,766)
Converted to restricted stock units	(19,450)
Outstanding at September 30, 2020	325,243