STOCK-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 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 nine months ended September 30, 2022 and 2021:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(In thousands)	2022		2021		2022		2021
Cost of revenues	$	172	$	664	$	727	$	1,935
Research and development		2,334		3,055		7,712		8,605
Sales and marketing		1,267		2,201		4,392		5,540
General and administrative		(755)		3,725		2,879		11,245
Total stock-based compensation expense	$	3,018	$	9,645	$	15,710	$	27,325

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 September 30, 2022 and activity during the nine 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	119	$	79.91
Vested	(104)	$	84.47
Forfeited	(3)	$	79.23
Outstanding at September 30, 2022	116	$	79.93	0.25	$	7,478
Outstanding and expected to vest at September 30, 2022	42			0.25	$	2,715

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 September 30, 2022 and activity during the nine 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 September 30, 2022	358	$	68.18	1.15	$	23,050
Outstanding and expected to vest at September 30, 2022	32			0.25	$	2,064

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 September 30, 2022 and activity during the nine 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	511	$	76.10
Vested	(448)	$	42.83
Forfeited	(62)	$	57.91
Outstanding at September 30, 2022	1,145	$	60.83	1.77	$	73,675
Outstanding and expected to vest at September 30, 2022	1,058			1.66	$	68,041