RESTRUCTURING - Schedule of Restructuring Activities (Details) - USD ($) $ in Thousands	3 Months Ended					12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Expense						$ 21,747	$ 21,743	$ 0
Employee Severance
Restructuring Cost and Reserve [Line Items]
Expense		$ 17,236	$ 1,581		$ 21,743	18,721
Office space reduction
Restructuring Cost and Reserve [Line Items]
Expense	$ 1,497			$ 1,241		$ 3,000	$ 3,200