STOCK-BASED COMPENSATION - Stock-Based Compensation Expense Incurred (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 9,499	$ 15,931
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	58	1,668
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	770	1,295
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	8,345	11,961
Cost of sales – services | Cost of sales – services
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 326	$ 1,007