Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2021

Employee Benefit Plans

Assumptions made for the purpose of estimating fair value

	March 31,	March 31,
	2021	2020
Expected term of options (years)	6	6
Risk free interest rate	0.61% - 0.73%	0.69% - 1.37%
Volatility	72.46%	64.19%

Schedule of Share-based Compensation, Stock Options, Activity

A summary of stock option activity for the quarter ended March 31, 2021 is as follows (in thousands except share amounts):

				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	581,000		65.72	—		—
Exercised	(1,811,274)		2.65	—		—
Forfeited	(33,333)		1.74	—		—
Expired	—		—	—		—
Options outstanding at March 31, 2021	9,020,891	$	15.18	8.1	$	247,964
Options exercisable at March 31, 2021	2,284,519		2.07	5.7		77,143
Options unvested at March 31, 2021	6,736,372	$	11.73	8.9	$	170,820

Nonvested Restricted Stock Shares Activity

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

		Aggregate
		Intrinsic
	Shares	Value
Unvested restricted stock at December 31, 2020	5,874,642	$	—
Granted	555,000		—
Vested	(10,001)		—
Forfeited	(3,333)		—
Unvested restricted stock at March 31, 2021	6,416,308	$	229,960