STOCK-BASED COMPENSATION - Stock-Based Compensation Expense Incurred (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 7,745	$ 17,076	$ 17,244	$ 33,007
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	43	1,420	101	3,088
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	847	692	1,617	1,987
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	6,630	14,102	14,975	26,063
Cost of sales – services | Cost of sales – services
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 225	$ 862	$ 551	$ 1,869