MORTGAGES PAYABLE - Summary of Mortgages Payable (Details) - Mortgages - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Dec. 31, 2025	May 03, 2024	Mar. 28, 2024
Fixed Rate Residential Mortgage | The Village at Waugh Chapel
Debt Instrument [Line Items]
Debt instrument, unamortized discount	$ 4,000
Fixed Rate Residential Mortgage | Mount Kisco Commons
Debt Instrument [Line Items]
Debt instrument, unamortized discount	500
First Mortgage
Debt Instrument [Line Items]
Unamortized debt issuance costs	(12,766)	$ (12,614)
Total mortgages payable, net	$ 1,665,218	1,606,774
First Mortgage | Adjustable Rate Residential Mortgage | Shoppers World
Debt Instrument [Line Items]
Interest rate spread on variable rate	1.70%
First Mortgage | Adjustable Rate Residential Mortgage | Montclair, NJ
Debt Instrument [Line Items]
Interest rate spread on variable rate	2.57%
First Mortgage | Adjustable Rate Residential Mortgage | The Plaza at Woodbridge
Debt Instrument [Line Items]
Interest rate spread on variable rate	1.55%
First Mortgage | Fixed Rate Residential Mortgage
Debt Instrument [Line Items]
Long-Term Debt, Gross	$ 1,677,984	1,619,388
First Mortgage | Fixed Rate Residential Mortgage | Town Brook Commons
Debt Instrument [Line Items]
Effective Interest Rate	3.78%
Long-Term Debt, Gross	$ 28,800	28,965
First Mortgage | Fixed Rate Residential Mortgage | Rockaway River Commons
Debt Instrument [Line Items]
Effective Interest Rate	3.78%
Long-Term Debt, Gross	$ 25,500	25,645
First Mortgage | Fixed Rate Residential Mortgage | Hanover Commons
Debt Instrument [Line Items]
Effective Interest Rate	4.03%
Long-Term Debt, Gross	$ 58,620	58,935
First Mortgage | Fixed Rate Residential Mortgage | Tonnelle Commons
Debt Instrument [Line Items]
Effective Interest Rate	4.18%
Long-Term Debt, Gross	$ 92,888	93,377
First Mortgage | Fixed Rate Residential Mortgage | Manchester Plaza
Debt Instrument [Line Items]
Effective Interest Rate	4.32%
Long-Term Debt, Gross	$ 12,500	12,500
First Mortgage | Fixed Rate Residential Mortgage | Millburn Gateway Center
Debt Instrument [Line Items]
Effective Interest Rate	3.97%
Long-Term Debt, Gross	$ 20,879	21,013
First Mortgage | Fixed Rate Residential Mortgage | Totowa Commons
Debt Instrument [Line Items]
Effective Interest Rate	4.33%
Long-Term Debt, Gross	$ 50,800	50,800
First Mortgage | Fixed Rate Residential Mortgage | Woodbridge Commons
Debt Instrument [Line Items]
Effective Interest Rate	4.36%
Long-Term Debt, Gross	$ 22,100	22,100
First Mortgage | Fixed Rate Residential Mortgage | Brunswick Commons
Debt Instrument [Line Items]
Effective Interest Rate	4.38%
Long-Term Debt, Gross	$ 63,000	63,000
First Mortgage | Fixed Rate Residential Mortgage | Rutherford Commons
Debt Instrument [Line Items]
Effective Interest Rate	4.49%
Long-Term Debt, Gross	$ 23,000	23,000
First Mortgage | Fixed Rate Residential Mortgage | Hackensack Commons
Debt Instrument [Line Items]
Effective Interest Rate	4.36%
Long-Term Debt, Gross	$ 66,400	66,400
First Mortgage | Fixed Rate Residential Mortgage | Marlton Commons
Debt Instrument [Line Items]
Effective Interest Rate	3.86%
Long-Term Debt, Gross	$ 35,108	35,295
First Mortgage | Fixed Rate Residential Mortgage | Yonkers Gateway Center
Debt Instrument [Line Items]
Effective Interest Rate				6.30%
Long-Term Debt, Gross		50,000		$ 50,000
First Mortgage | Fixed Rate Residential Mortgage | Ledgewood Commons
Debt Instrument [Line Items]
Effective Interest Rate			6.03%
Long-Term Debt, Gross		50,000	$ 50,000
First Mortgage | Fixed Rate Residential Mortgage | The Shops at Riverwood
Debt Instrument [Line Items]
Effective Interest Rate	4.25%
Long-Term Debt, Gross	$ 20,476	20,577
First Mortgage | Fixed Rate Residential Mortgage | Shops at Bruckner
Debt Instrument [Line Items]
Effective Interest Rate	6.00%
Long-Term Debt, Gross	$ 36,710	$ 36,848
First Mortgage | Fixed Rate Residential Mortgage | Shoppers World
Debt Instrument [Line Items]
Effective Interest Rate	5.12%	5.12%
Long-Term Debt, Gross	$ 123,600	$ 123,600
First Mortgage | Fixed Rate Residential Mortgage | Greenbrook Commons
Debt Instrument [Line Items]
Effective Interest Rate	6.03%
Long-Term Debt, Gross	$ 31,000	31,000
First Mortgage | Fixed Rate Residential Mortgage | Huntington Commons
Debt Instrument [Line Items]
Effective Interest Rate	6.29%
Long-Term Debt, Gross	$ 43,580	43,704
First Mortgage | Fixed Rate Residential Mortgage | Bergen Town Center
Debt Instrument [Line Items]
Effective Interest Rate	6.30%
Long-Term Debt, Gross	$ 286,922	287,779
First Mortgage | Fixed Rate Residential Mortgage | The Outlets at Montehiedra | Senior Loan
Debt Instrument [Line Items]
Effective Interest Rate	5.00%
Long-Term Debt, Gross	$ 70,864	$ 71,412
First Mortgage | Fixed Rate Residential Mortgage | Montclair, NJ
Debt Instrument [Line Items]
Effective Interest Rate	3.15%	3.15%
Long-Term Debt, Gross	$ 7,164	$ 7,201
First Mortgage | Fixed Rate Residential Mortgage | Garfield Commons
Debt Instrument [Line Items]
Effective Interest Rate	4.14%
Long-Term Debt, Gross	$ 37,941	38,134
First Mortgage | Fixed Rate Residential Mortgage | Shops At Caguas
Debt Instrument [Line Items]
Effective Interest Rate	6.15%
Long-Term Debt, Gross	$ 79,586	79,983
First Mortgage | Fixed Rate Residential Mortgage | The Village at Waugh Chapel
Debt Instrument [Line Items]
Effective Interest Rate	3.76%
Long-Term Debt, Gross	$ 55,963	55,784
First Mortgage | Fixed Rate Residential Mortgage | Brick Commons
Debt Instrument [Line Items]
Effective Interest Rate	5.20%
Long-Term Debt, Gross	$ 50,000	50,000
First Mortgage | Fixed Rate Residential Mortgage | Woodmore Towne Centre
Debt Instrument [Line Items]
Effective Interest Rate	3.39%
Long-Term Debt, Gross	$ 117,200	117,200
First Mortgage | Fixed Rate Residential Mortgage | The Plaza at Woodbridge
Debt Instrument [Line Items]
Effective Interest Rate	5.03%
Long-Term Debt, Gross	$ 62,500	0
First Mortgage | Fixed Rate Residential Mortgage | Newington Commons
Debt Instrument [Line Items]
Effective Interest Rate	6.00%
Long-Term Debt, Gross	$ 15,450	15,505
First Mortgage | Fixed Rate Residential Mortgage | Briarcliff Commons
Debt Instrument [Line Items]
Effective Interest Rate	5.47%
Long-Term Debt, Gross	$ 30,000	30,000
First Mortgage | Fixed Rate Residential Mortgage | Mount Kisco Commons
Debt Instrument [Line Items]
Effective Interest Rate	6.40%
Long-Term Debt, Gross	$ 9,433	$ 9,631