Annual report [Section 13 and 15(d), not S-K Item 405]

INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES - Schedule of Company's Equity In Earnings (Loss) of Unconsolidated Joint Ventures (Details)

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INVESTMENTS IN UNCONSOLIDATED JOINT VENTURES - Schedule of Company's Equity In Earnings (Loss) of Unconsolidated Joint Ventures (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]      
Equity in earnings (losses) of unconsolidated joint ventures $ 5,257 $ 3,934 $ 3,102
Amortization of basis difference 400 600 600
Multifamily      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings (losses) of unconsolidated joint ventures 5,257 3,934 3,102
Multifamily | Metropolitan and Lofts at 40 Park      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings (losses) of unconsolidated joint ventures (361) (1,143) (1,239)
Multifamily | RiverTrace at Port Imperial      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings (losses) of unconsolidated joint ventures 680 782 546
Multifamily | The Capstone at Port Imperial      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings (losses) of unconsolidated joint ventures 768 235 (294)
Multifamily | Riverpark at Harrison      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings (losses) of unconsolidated joint ventures 216 270 540
Multifamily | Station House      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings (losses) of unconsolidated joint ventures 38 (201) (299)
Multifamily | Urby Harborside      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings (losses) of unconsolidated joint ventures 3,916 4,161 4,110
Multifamily | PI North - Land      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings (losses) of unconsolidated joint ventures 0 (276) (240)
Multifamily | Liberty Landing      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings (losses) of unconsolidated joint ventures 0 0 (22)
Multifamily | Other      
Schedule of Equity Method Investments [Line Items]      
Equity in earnings (losses) of unconsolidated joint ventures $ 0 $ 106 $ 0