STOCK-BASED COMPENSATION - Stock-Based Compensation Expense Incurred (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 24,396	$ 64,660
Cost of sales - services | Cost of sales - services
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	900	3,497
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	188	4,668
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	1,989	3,806
General and Administrative Expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total	$ 21,319	$ 52,689