Quarterly report [Sections 13 or 15(d)]

INVESTMENTS IN RENTAL PROPERTIES - Schedule of Disposed Developable Land (Details)

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INVESTMENTS IN RENTAL PROPERTIES - Schedule of Disposed Developable Land (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Net Sales Proceeds $ 89,374 $ 88,770
Net Carrying Value 54,082 77,255
Gain (loss) on disposition of developable land 35,292 11,515
65 Livingston    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Net Sales Proceeds 7,139  
Net Carrying Value 7,295  
Gain (loss) on disposition of developable land (156)  
Impairment charges 2,600  
Wall Land    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Net Sales Proceeds 30,152  
Net Carrying Value 4,116  
Gain (loss) on disposition of developable land 26,036  
1 Water Street    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Net Sales Proceeds 15,563  
Net Carrying Value 5,033  
Gain (loss) on disposition of developable land 10,530  
PI South - Building 2    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Net Sales Proceeds 36,520  
Net Carrying Value 37,638  
Gain (loss) on disposition of developable land (1,118)  
Impairment charges $ 3,200  
2 Campus    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Net Sales Proceeds   10,155
Net Carrying Value   9,371
Gain (loss) on disposition of developable land   784
107 Morgan    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Net Sales Proceeds   50,630
Net Carrying Value   50,929
Gain (loss) on disposition of developable land   (299)
Impairment charges   10,500
6 Becker Farm / 85 Livingston    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Net Sales Proceeds   27,985
Net Carrying Value   16,955
Gain (loss) on disposition of developable land   $ 11,030