Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Stockholders' Equity Note [Abstract]

Changes in Restricted Stock Units

Changes in restricted stock units during the year ended December 31, 2020 are as follows:

(in thousands, except weighted average grant date fair value)	Restricted Stock Units	Weighted Average Grant Date Fair Value
Unvested as of January 1, 2020	188	$	45.78
Granted	210	$	34.99
Vested	(90)	$	47.64
Forfeited	(29)	$	39.32
Unvested as of December 31, 2020	279	$	37.72

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

The following additional activity occurred for the Company's restricted stock units:

	Years Ended December 31,
(in millions, except weighted average grant date fair value per award granted)	2020		2019		2018
Weighted average grant date fair value per award	$	34.99	$	34.57	$	58.45
Fair value of awards vested	$	3.8	$	1.6	$	1.9
Tax (expense) benefit for restricted stock compensation expense	$	(0.4)	$	0.7	$	0.5

Share-based Payment Arrangement, Performance Shares, Activity

Changes in PSUs during the year ended December 31, 2020 are as follows:

(in thousands, except weighted average grant date fair value)	Performance Stock Units	Weighted Average Grant Date Fair Value
Unvested as of January 1, 2020	—	$	—
Granted	96	$	35.46
Vested	(1)	$	34.66
Forfeited	(8)	$	36.08
Unvested as of December 31, 2020	87	$	35.41