Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Summary of Stock Option Activity

The following table is a summary of the Company's stock option activity for the year ended December 31, 2020:

	Shares	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term	Aggregate Intrinsic Value ($000,000)
Options outstanding at December 31, 2019	409,296	$	19.34	2.4 years	$	—
Forfeited/Expired	(131,334)	18.82
Options outstanding, vested or expected to vest, and exercisable at December 31, 2020	277,962	$	19.58	1.8 years	$	—

Summary of Restricted Stock Unit Activity

The following table is a summary of the Company's restricted stock unit activity as of December 31, 2020:

	Total Shares	Weighted-Average Grant-Date Fair Value		Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value ($000,000)
Restricted stock units outstanding at December 31, 2019	2,731,758	$	5.02	0.9 years	$	5.7
Granted	3,762,725	2.06
Vested and converted to shares	(1,197,760)	6.25
Forfeited	(138,488)	3.45
Restricted stock units outstanding at December 31, 2020	5,158,235	$	2.62	0.95 years	$	28.2
Restricted stock units vested and deferred at December 31, 2020	290,324	$	3.27		$	1.6

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

The following table is a summary of the Company's restricted stock unit compensation information for the years ended December 31:

(Amounts in millions)	2020		2019		2018
Weighted-average grant-date fair value of restricted stock units vested during the year	$	7.5	$	10.4	$	16.6
Total intrinsic value of vested and converted shares	$	2.9	$	3.2	$	22.3