RECEIVABLES - Summary of Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Trade accounts receivable	$ 160,572	$ 142,975
Unbilled revenues	31,379	33,141
Allowance for credit losses	(5,262)	(7,843)	$ (9,115)
Accounts receivable, net	$ 186,689	$ 168,273
Payment terms	30 days