CONCENTRATION OF CREDIT RISK - Triple-Net Leased Properties (Details) - Customer Concentration Risk	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues | Brookdale
Concentration Risk
Concentration percentage	3.10%	3.50%
Revenues | Ardent
Concentration Risk
Concentration percentage	2.80%	3.10%
Revenues | Kindred
Concentration Risk
Concentration percentage	2.80%	3.00%
NOI | Brookdale
Concentration Risk
Concentration percentage	7.40%	8.00%
NOI | Ardent
Concentration Risk
Concentration percentage	6.70%	7.10%
NOI | Kindred
Concentration Risk
Concentration percentage	6.60%	7.00%