LOANS RECEIVABLE AND OTHER INVESTMENTS - Composition of Loans Receivable and Other Investments (Details) $ in Thousands	Sep. 30, 2022 USD ($) loan investment preferredEquityInvestment	Dec. 31, 2021 USD ($)
Loans Receivable:
Quantity | loan	15
Principal balance	$ 351,774	$ 352,159
Book value	347,960	348,375
Allowance for loan losses	(6,427)	(6,344)
Book value	$ 341,533	342,031
Weighted Average Contractual Interest Rate / Rate of Return	7.60%
Weighted Average Annualized Effective Interest Rate / Rate of Return	7.50%
Other Investments:
Quantity | preferredEquityInvestment	7
Principal balance	$ 48,575	56,805
Book value	$ 48,742	57,055
Weighted Average Contractual Interest Rate / Rate of Return	10.80%
Weighted Average Annualized Effective Interest Rate / Rate of Return	10.70%
Total quantity | investment	22
Total principal balance	$ 400,349
Total book value	$ 390,275	399,086
Total weighted average contractual interest rate / rate of return	8.00%
Total weighted average annualized effective interest rate / rate of return	7.90%
Mortgage
Loans Receivable:
Quantity | loan	2
Principal balance	$ 309,000
Book value	$ 309,000	309,000
Weighted Average Contractual Interest Rate / Rate of Return	7.70%
Weighted Average Annualized Effective Interest Rate / Rate of Return	7.70%
Construction
Loans Receivable:
Quantity | loan	0
Principal balance	$ 0
Book value	$ 0	3,347
Weighted Average Contractual Interest Rate / Rate of Return	0.00%
Weighted Average Annualized Effective Interest Rate / Rate of Return	0.00%
Other
Loans Receivable:
Quantity | loan	13
Principal balance	$ 42,774
Book value	$ 38,960	$ 36,028
Weighted Average Contractual Interest Rate / Rate of Return	6.90%
Weighted Average Annualized Effective Interest Rate / Rate of Return	6.20%