SEGMENT INFORMATION - Revenue and Long-Lived Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenue and Long-lived Assets by Geography
Revenue	$ 498,036	$ 461,565	$ 1,449,977	$ 1,269,582
Long-lived assets (excluding goodwill and intangible assets)	167,302		167,302		$ 118,267
United States
Revenue and Long-lived Assets by Geography
Revenue	473,835	437,872	1,369,392	1,188,854
Long-lived assets (excluding goodwill and intangible assets)	160,879		160,879		111,136
All other countries
Revenue and Long-lived Assets by Geography
Revenue	24,201	$ 23,693	80,585	$ 80,728
Long-lived assets (excluding goodwill and intangible assets)	$ 6,423		$ 6,423		$ 7,131