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FAIR VALUE MEASUREMENTS - Fair value of mortgages payable (Details) - Mortgages payable $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2025 USD ($) Y	Dec. 31, 2024 USD ($) Y
FAIR VALUE MEASUREMENTS
Fair value of mortgages payable	$ 457,308	$ 398,934
Carrying value of mortgages payable, gross	463,103	424,978
Fair value less than carrying value	$ (5,795)	$ (26,044)
Weighted average interest rate	4.79%	4.56%
Blended market interest rate
FAIR VALUE MEASUREMENTS
Long-term debt, measurement input	0.0545	0.0628
Weighted average remaining term to maturity
FAIR VALUE MEASUREMENTS
Long-term debt, measurement input | Y	6	6.1

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- Definition

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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations before netting of deferred finance costs. Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Value of input used to measure long-term debt.

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Weighted average interest rate of long-term debt outstanding calculated over time.

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