STOCK-BASED COMPENSATION - Schedule of Stock-Based Compensation Expense Incurred (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 5,218,000	$ 15,836,000	$ 22,462,000	$ 48,843,000
Stock Options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	100,000	0	200,000	0
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	24,000	611,000	125,000	3,699,000
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	328,000	897,000	1,945,000	2,884,000
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	4,793,000	13,399,000	19,768,000	39,462,000
Cost of sales – services | Cost of sales – services
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 73,000	$ 929,000	$ 624,000	$ 2,798,000