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NATURE OF BUSINESS AND BASIS OF PRESENTATION (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
center
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
center
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Business Combination [Line Items]          
Number of centers | center 407   407    
BRMG and NY Groups revenues $ 67,800 $ 55,300 $ 191,600 $ 162,500  
BRMG and NY Groups operating expenses 67,800 55,300 191,600 162,500  
Management services provided to BRMG and NY Groups 236,700 $ 207,400 687,100 $ 673,300  
BRMG and NY Groups accounts receivable 3,665,279   3,665,279   $ 3,286,690
BRMG and NY Groups accounts payable 2,351,320   2,351,320   2,153,280
Variable Interest Entity, Primary Beneficiary          
Business Combination [Line Items]          
BRMG and NY Groups accounts receivable 131,900   131,900   103,000
BRMG and NY Groups accounts payable $ 32,000   $ 32,000   $ 22,700