Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2021

Nonvested Restricted Stock Shares Activity

A summary of restricted stock activity for the year ended December 31, 2021 is as follows (in thousands except share amounts):

		Weighted		Aggregate
		Average Grant Date		Intrinsic
	Shares	Fair Value		Value
Unvested restricted stock at December 31, 2020	5,874,642	$	7.88	$	—
Granted	1,894,356		32.35		—
Vested	(2,807,124)		6.19		—
Forfeited	(110,001)		11.23		—
Unvested restricted stock at December 31, 2021	4,851,873	$	21.59	$	136,968

Service Options Awards

Assumptions made for the purpose of estimating fair value

	2021	2020	2019
Expected term of options (years)	3 - 5	6	6
Risk free interest rate	0.61% - 1.23%	0.37% - 1.37%	1.52% - 2.53%
Volatility	72.46% - 76.60%	64.19% - 68.18%	69.32% - 87.94%

Schedule of Share-based Compensation, Stock Options, Activity

				Weighted
		Weighted		Average
		Average		Remaining	Aggregate
		Exercise		Contractual	Intrinsic
	Shares	Price		Terms	Value
Options outstanding at December 31, 2020	10,284,498	$	5.78	7.8	$	289,316
Granted	1,942,335		32.52
Exercised	(2,331,656)		3.23
Forfeited	(104,168)		10.63
Expired	(4,100)		6.10
Options outstanding at December 31, 2021	9,786,909	$	11.65	7.7	$	172,412
Options exercisable at December 31, 2021	4,724,624	$	4.37	6.5	$	112,715
Options unvested at December 31, 2021	5,062,285	$	18.44	8.8	$	59,697

Performance Option Awards

Assumptions made for the purpose of estimating fair value

	December 31,
	2021
Remaining VWAP performance period (years)	3
Risk- free interest rate	1.12%
Expected volatility	70.00%
Closing stock price on grant date	$ 26.92

Schedule of Share-based Compensation, Stock Options, Activity

				Weighted
		Weighted		Average
		Average		Remaining	Aggregate
		Exercise		Contractual	Intrinsic
	Shares	Price		Terms	Value
Options outstanding at December 31, 2020	—	$	—	—	$	—
Granted	14,560,000		26.92	—		—
Exercised	—		—	—		—
Forfeited	(540,000)		26.92	—		—
Expired	—		—	—		—
Options outstanding at December 31, 2021	14,020,000	$	26.92	6.7	$	18,366
Options exercisable at December 31, 2021	—		—	—		—
Options unvested at December 31, 2021	14,020,000	$	26.92	6.7	$	18,366