STOCK-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2022

Share-Based Payment Arrangement [Abstract]

Schedule of Stock Compensation Expense by Department

Table 12.1: Details of Stock Compensation Expense by Department
	For the Three Months Ended				For the Nine Months Ended
	September 30, 2022		September 30, 2021		September 30, 2022		September 30, 2021
	(in thousands)
Cost of sales – services	$	929	$	718	$	2,798	$	1,974
Sales and marketing	611		1,536		3,699		5,316
Research and development	897		970		2,884		2,079
General and administrative	12,284		9,148		34,844		38,009
Total stock-based compensation expense	$	14,721	$	12,372	$	44,225	$	47,378

Schedule of Nonvested Restricted Stock Units Activity

Table 12.2: Service-Based RSU and Performance-Based RSU Award Activity
	Service-Based RSU	Performance-Based RSU	Total	Weighted-Average Grant Date Fair Value
Unvested outstanding units as of December 31, 2021	3,030,608	492,727	3,523,335	$	34.24
Granted	3,897,786	—	3,897,786	10.00
Vested	(1,653,308)	—	(1,653,308)	31.21
Forfeited	(360,762)	(155,942)	(516,704)	33.22
Unvested outstanding units as of September 30, 2022	4,914,324	336,785	5,251,109	$	17.23