STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2022

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-based Compensation Expense

The following table summarizes the stock-based compensation expense recognized in accordance with ASC 718-10 for the three and six months ended June 30, 2022 and 2021:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(In thousands)	2022		2021		2022		2021
Cost of revenues	$	235	$	640	$	555	$	1,271
Research and development		2,323		3,159		5,378		5,550
Sales and marketing		1,177		1,725		3,125		3,339
General and administrative		(56)		3,676		3,634		7,520
Total stock-based compensation expense	$	3,679	$	9,200	$	12,692	$	17,680

Performance Based Awards (PSUs)

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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

A summary of PSUs outstanding as of June 30, 2022 and activity during the six months ended, is presented below:

				Weighted-Average
		Weighted-Average		Remaining	Aggregate
	Shares	Grant Date Fair		Contractual Term	Intrinsic Value
	(In thousands)	Value Per Share		(In years)	(In thousands)
Outstanding at January 1, 2022	104	$	84.47
Granted	118	$	79.93
Vested	(104)	$	84.47
Forfeited	(2)	$	79.23
Outstanding at June 30, 2022	116	$	79.94	0.50	$	8,678
Outstanding and expected to vest at June 30, 2022	75			0.50	$	5,623

Long-Term Performance-Based Awards (PRSUs)

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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

A summary of PRSUs outstanding as of June 30, 2022 and activity during the six months ended, is presented below:

				Weighted-Average	Aggregate
		Weighted-Average		Remaining	Intrinsic
	Shares	Grant Date Fair		Contractual Term	Value
	(In thousands)	Value Per Share		(In years)	(In thousands)
Outstanding at January 1, 2022	383	$	53.14
Granted	110	$	78.96
Vested	(135)	$	34.09
Forfeited	—		—
Outstanding at June 30, 2022	358	$	68.18	1.40	$	26,881
Outstanding and expected to vest at June 30, 2022	152			1.07	$	11,408

Restricted Stock Units (RSUs)

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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

A summary of RSUs outstanding as of June 30, 2022 and activity during the six months ended, is presented below:

				Weighted-Average	Aggregate
		Weighted-Average		Remaining	Intrinsic
	Shares	Grant Date Fair		Contractual Term	Value
	(In thousands)	Value Per Share		(In years)	(In thousands)
Outstanding at January 1, 2022	1,144	$	46.81
Granted	481	$	76.45
Vested	(433)	$	42.34
Forfeited	(40)	$	56.04
Outstanding at June 30, 2022	1,152	$	60.55	2.00	$	86,448
Outstanding and expected to vest at June 30, 2022	1,053			1.89	$	79,006