RENTALS UNDER OPERATING LEASES - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) property	Dec. 31, 2021 property	Dec. 31, 2020 property
Lessor, Lease, Description [Line Items]
Number of real estate properties	15	15	14
Office Building
Lessor, Lease, Description [Line Items]
Number of real estate properties	4	4	4
Medical Office Property
Lessor, Lease, Description [Line Items]
Number of real estate properties	1	1	1
Retail Property
Lessor, Lease, Description [Line Items]
Number of real estate properties	4	4	4
Industrial Property
Lessor, Lease, Description [Line Items]
Number of real estate properties	5	5	5
Multifamily
Lessor, Lease, Description [Line Items]
Number of real estate properties	2	2
Proceeds from residential leases | $	$ 11,208
Student Campus
Lessor, Lease, Description [Line Items]
Number of real estate properties	1	1	1