Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2021

Equity [Abstract]

Schedule of Restricted Stock Units (RSUs) Activity

The table below summarizes the activity relating to RSUs issued under the Restated Incentive Plan during the year ended December 31, 2021. The RSUs vest ratably over three years. Unrecognized compensation cost associated with the RSUs at December 31, 2021 was approximately $8 million which will be recognized over a weighted-average period of approximately two years.

	Number of shares	Weighted-average Grant Date Fair Value
	(shares in thousands)
Non-vested at December 31, 2020	1,939	$	7.52
Granted	1,833	$	4.65
Vested	(774)	$	7.97
Forfeited	(418)	$	5.54
Non-vested at December 31, 2021	2,580	$	5.67

Schedule of Performance-Based Restricted Stock Unit (PSUs) Activity

The table below summarizes the activity relating to the PSUs issued under the Revised Incentive Plan during the year ended December 31, 2021. Unrecognized compensation cost associated with the PSUs at December 31, 2021 is approximately $10 million which will be recognized over a weighted-average period of approximately two years.

	Number of shares	Weighted-average Grant Date Fair Value
	(shares in thousands)
Non-vested at December 31, 2020	1,652	$	14.77
Granted	998	$	5.96
Vested	(75)	$	12.75
Forfeited	(490)	$	13.17
Non-vested at December 31, 2021	2,085	$	11.00