BUSINESS ACQUISITIONS - Schedule of Purchase Price allocations of Acquisitions (Details) - USD ($) $ in Thousands			12 Months Ended
	Nov. 05, 2022	Oct. 01, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Purchase Price Allocation
Goodwill			$ 132,717	$ 74,618	$ 0
Escrow Deposit	$ 11,500	$ 8,500
ReedTMS
Purchase Price
Cash consideration paid			116,989
Cash and cash equivalents acquired			(12,120)
Contingent consideration arrangement			5,000
Working capital surplus (deficiency)			(689)
Total purchase price (fair value of consideration)	109,200		109,180
Purchase Price Allocation
Current assets			52,531
Property and equipment			35,000
Intangible assets			12,000
Other non-current assets			7,927
Total assets acquired			107,458
Current liabilities			(45,497)
Other long-term liabilities			(5,622)
Total liabilities assumed			(51,119)
Net present value of future insurance payments	$ 900
Goodwill			52,841
Baylor
Purchase Price
Cash consideration paid			90,150
Cash and cash equivalents acquired			(10,150)
Contingent consideration arrangement			8,400
Working capital surplus (deficiency)			643
Total purchase price (fair value of consideration)		$ 89,000	89,043
Purchase Price Allocation
Current assets			11,371
Property and equipment			54,639
Intangible assets			20,300
Other non-current assets			556
Total assets acquired			86,866
Current liabilities			(2,993)
Other long-term liabilities			(302)
Total liabilities assumed			(3,295)
Goodwill			$ 5,472