INVESTMENT IN REAL ESTATE PROPERTIES - Senior Housing - Managed Communities Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Resident fees and services	$ 44,136	$ 39,118	$ 86,363	$ 75,159
Revenue From Contract With Customer Excluding Assessed Tax
Disaggregation of Revenue [Line Items]
Grants recognized	100	500	100	500
Ancillary services
Disaggregation of Revenue [Line Items]
Resident fees and services	$ 300	$ 300	$ 700	$ 600