SEGMENT REPORTING - Schedule of Revenue from External Customers by Geographic Areas (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total service revenue	$ 2,040,210	$ 1,829,664	$ 1,616,630
United States
Segment Reporting Information [Line Items]
Total service revenue	2,006,237	1,802,422	1,599,745
Other countries
Segment Reporting Information [Line Items]
Total service revenue	$ 33,973	$ 27,242	$ 16,885