Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2020

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary Of RSU Activity

	Units	Weighted- Average Grant-Date Fair Value
Unvested at January 1, 2020	272,407	$	45.41
Granted	303,385	$	50.21
Vested	(154,585)	$	50.25
Forfeited	(5,973)	$	47.48
Dividend equivalents	1,444	$	47.08
Unvested at March 31, 2020	416,678	$	47.09

Summary Of PSU Activity

	Units	Weighted- Average Grant-Date Fair Value
Unvested at January 1, 2020	721,398	$	67.97
Granted	249,564	$	33.93
Achievement adjustment	(40,509)	$	44.50
Forfeited	(96,545)	$	62.82
Dividend equivalents	2,039	$	65.24
Unvested at March 31, 2020	835,947	$	55.89

Performance Stock Units, Market Condition [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary Of PSU Activity

	Units	Weighted- Average Grant-Date Fair Value
Unvested at January 1, 2020	340,971	$	47.42
Granted	—	$	—
Achievement adjustment	7,672	$	47.30
Vested	—	$	—
Forfeited	(272,777)	$	47.96
Unvested at March 31, 2020	75,866	$	47.30