IMPAIRMENT OF REAL ESTATE AND DISPOSITIONS - Dispositions (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) facility	Jun. 30, 2022 USD ($) facility
Dispositions:
Number of facilities | facility			12	8
Consideration, net of closing costs	$ 176,900	$ 40,000	$ 176,900	$ 40,000
Net carrying value	206,300	44,500	206,300	44,500
Net loss on sale			(29,400)	(4,500)
Net loss			(37,400)	(2,400)
Impairment of real estate	$ 0	$ 11,745	$ 7,064	$ 11,745