STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2022

Share-based Payment Arrangement [Abstract]

Schedule of Stock-Based Compensation Expense Related to Awards Issued

Stock-based compensation expense related to awards issued under the Company's incentive compensation plans for the three months ended March 31, 2022 and 2021, was as follows:

	Three Months Ended March 31,
	2022		2021
Cost of product revenues	$	518	$	854
Sales and marketing	2,813		15
Research and development	5,145		396
General and administrative	7,559		1,756
Total stock-based compensation expense	$	16,035	$	3,021

Schedule of Stock Option Activity and Related Information

A summary of stock option activity and related information for the three months ended March 31, 2022 was as follows:

	Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)
Outstanding at January 1, 2022	9,163,160	$	5.13	6.40
Granted	—	—
Exercised	(294,856)	0.38
Forfeited	(74,964)	11.77
Expired	(14,833)	15.61
Outstanding at March 31, 2022	8,778,507	$	5.22	6.50
Exercisable at March 31, 2022	6,151,757	$	2.89	5.70
Vested and expected to vest at March 31, 2022	8,778,507	$	5.22	6.50

Share-based Payment Arrangement, Restricted Stock Unit, Activity

A summary of RSU activity and related information for the three months ended March 31, 2022 was as follows:

	Underlying Shares	Weighted-average Grant Date Fair Value		Aggregate Fair Value
Outstanding, January 1, 2022	11,264,235	$	14.62	$	164,683
Granted	5,003,537	8.10		40,529
Vested	(930,493)	15.93		(14,823)
Forfeited	(5,204)	13.98		(73)
Outstanding, March 31, 2022	15,332,075	$	12.41	$	190,316

Market-based performance-vesting RSU activity for the three months ended March 31, 2022 was as follows:

	Underlying Shares		Weighted-average Grant Date Fair Value		Aggregate Fair Value
Outstanding, January 1, 2022	$	3,335,300	$	12.82	$	42,759
Granted	—		—		—
Vested	—		—		—
Forfeited	—		—		—
Outstanding, March 31, 2022	$	3,335,300	$	12.82	42,759

Operations-based performance-vesting RSU activity for the three months ended March 31, 2022 was as follows:

	Underlying Shares	Weighted-average Grant Date Fair Value		Aggregate Fair Value
Outstanding, January 1, 2021	1,597,272	$	16.00	$	25,556
Granted	—	—		—
Vested	(532,424)	16.00		(8,519)
Forfeited	—	—		—
Outstanding, March 31, 2022	1,064,848	$	16.00	$	17,037