OTHER REAL ESTATE RELATED AND OTHER INVESTMENTS - Schedule of Other Real Estate Related Investments, at Fair Value (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) facility	Dec. 31, 2023 USD ($) facility
Other loans receivable
Real Estate Properties [Line Items]
Principal amount | $	$ 243,362
Fair Value | $	231,541	$ 178,568
Other Investments
Real Estate Properties [Line Items]
Principal amount | $	1,782
Fair Value | $	$ 1,805	1,801
Mortgage Secured and Mezzanine Loans Receivable | Secured Overnight Financing Rate (SOFR)
Real Estate Properties [Line Items]
Basis spread on variable rate (percent)	5.33%
Mortgage secured loans receivable
Real Estate Properties [Line Items]
Number of facilities	2,000
Mortgage secured loans receivable | Other loans receivable
Real Estate Properties [Line Items]
Principal amount | $	$ 166,197
Fair Value | $	$ 157,265	156,769
Weighted Average Contractual Interest Rate	8.90%
Mortgage secured loans receivable | SNF | Other loans receivable
Real Estate Properties [Line Items]
Facility Count and Type	31
Mortgage secured loans receivable | Campus | Other loans receivable
Real Estate Properties [Line Items]
Facility Count and Type	1
Mortgage secured loans receivable | ALF | Other loans receivable
Real Estate Properties [Line Items]
Facility Count and Type	4
Mortgage secured loans receivable | ILF | Other loans receivable
Real Estate Properties [Line Items]
Facility Count and Type	1
Mezzanine loans receivable | Secured Overnight Financing Rate (SOFR)
Real Estate Properties [Line Items]
Number of facilities	2,000
Mezzanine loans receivable | Other loans receivable
Real Estate Properties [Line Items]
Principal amount | $	$ 77,165
Fair Value | $	$ 74,276	21,799
Weighted Average Contractual Interest Rate	12.80%
Mezzanine loans receivable | SNF | Other loans receivable
Real Estate Properties [Line Items]
Facility Count and Type	40
Mezzanine loans receivable | Campus | Other loans receivable
Real Estate Properties [Line Items]
Facility Count and Type	3
Mezzanine loans receivable | ALF | Other loans receivable
Real Estate Properties [Line Items]
Facility Count and Type	2
Mezzanine loans receivable | ILF | Other loans receivable
Real Estate Properties [Line Items]
Facility Count and Type	0
Preferred Equity | Other Investments
Real Estate Properties [Line Items]
Principal amount | $	$ 1,782
Fair Value | $	$ 1,805	$ 1,801
Weighted Average Contractual Interest Rate	15.00%
Preferred Equity | SNF | Other Investments
Real Estate Properties [Line Items]
Facility Count and Type	3	3