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FAIR VALUE MEASUREMENTS - Fair Value of Derivatives (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($)
FAIR VALUE MEASUREMENTS
Number of mortgage loans outstanding with related interest rate swaps | item	17
Interest rate swap | Level 2
Financial assets:
Financial assets	$ 1,401,000	$ 1,811,000
Financial assets, Balance Sheet Classification	Escrow, deposits and other assets and receivables	Escrow, deposits and other assets and receivables
Interest rate swap | Cash flow hedges
FAIR VALUE MEASUREMENTS
Number of interest rate derivatives held | item	17
Notional Amount	$ 48,720,000
Weighted average maturity	1 year 4 months 24 days
Weighted average annual interest rate (as a percent)	4.07%
Financial liabilities:
Financial liabilities	$ 0	$ 0
Interest rate swap | Cash flow hedges | Minimum
FAIR VALUE MEASUREMENTS
Fixed interest rate (as a percent)	3.02%
Interest rate swap | Cash flow hedges | Maximum
FAIR VALUE MEASUREMENTS
Fixed interest rate (as a percent)	4.62%

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The number of mortgage loans outstanding with related interest rate derivatives.

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Number of interest rate derivative instruments held by the entity at the reporting date.

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