GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Activity Related to Other Intangible Assets, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Intangible Assets [Roll Forward]
Beginning balance	$ 101,167	$ 111,200
Additions	7,200	3,500
Amortization	(5,700)	(13,500)
Ending balance	102,675	101,167
Amortizable acquired names [Member]
Intangible Assets [Roll Forward]
Beginning balance	0	3,100
Additions	0	0
Amortization	0	(3,100)
Ending balance	0	0
Noncompete Agreements [Member]
Intangible Assets [Roll Forward]
Beginning balance	1,800	6,400
Additions	0	0
Amortization	(1,800)	(4,600)
Ending balance	0	1,800
Technology-Based Intangible Assets
Intangible Assets [Roll Forward]
Beginning balance	17,100	19,000
Additions	7,100	1,100
Amortization	(3,800)	(3,000)
Ending balance	20,400	17,100
Certificates of Need and Licenses [Member]
Intangible Assets [Roll Forward]
Beginning balance	46,700	47,100
Additions	100	2,400
Amortization	(100)	(2,800)
Ending balance	46,700	46,700
Unamortizable acquired names [Member]
Intangible Assets [Roll Forward]
Beginning balance	35,600	35,600
Additions	0	0
Amortization	0	0
Ending balance	$ 35,600	$ 35,600