LEASES - Summary of Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating lease expense
Rent - cost of services	$ 65,833	$ 51,456	$ 129,794	$ 96,560
General and administrative expense	607	353	1,417	708
Variable lease costs	8,119	6,044	17,033	11,964
Total operating lease expense	74,559	57,853	148,244	109,232
Finance lease expense
Amortization of right-of-use assets	322	313	645	620
Interest on lease liabilities	736	198	1,476	330
Total financing lease expense	1,058	511	2,121	950
Total Lease Expense	75,617	58,364	150,365	110,182
Other variable costs	$ 497	$ 620	$ 1,035	$ 1,578