NATURE OF BUSINESS AND BASIS OF PRESENTATION (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) center	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Business Acquisition [Line Items]
Number of centers | center	401
BRMG and NY Groups revenues	$ 58,200	$ 52,300
Management services provided to BRMG and NY Groups	238,600	$ 234,800
BRMG and NY Groups accounts receivable	3,336,264		$ 3,286,690
BRMG and NY Groups accounts payable	2,199,747		2,153,280
Variable Interest Entity, Primary Beneficiary
Business Acquisition [Line Items]
BRMG and NY Groups accounts receivable	117,500		103,000
BRMG and NY Groups accounts payable	$ 31,500		$ 22,700