REVENUE - Disaggregation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 2,424,300	$ 2,161,220	$ 2,015,477
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	2,240,226	2,006,368	1,862,698
International
Disaggregation of Revenue [Line Items]
Revenues	$ 184,074	$ 154,852	$ 152,779