SEGMENT REPORTING - Schedule Of Selected Results Of Operations And Asset Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Segment Reporting Information [Line Items]      
Total revenues $ 66,925 $ 46,169  
Total operating and interest expenses 60,955 51,988  
Equity in earnings (loss) of unconsolidated joint ventures (68) (487)  
Net operating income (loss) 5,902 (6,306)  
Total assets 3,800,656   $ 3,920,768
Total long-lived assets 3,526,366   3,647,879
Total investments in unconsolidated joint ventures 124,218   126,158
Corporate & Other      
Segment Reporting Information [Line Items]      
Total revenues 0 (502)  
Total operating and interest expenses 28,897 29,182  
Equity in earnings (loss) of unconsolidated joint ventures 0 0  
Net operating income (loss) (28,897) (29,684)  
Total assets 18,601   21,121
Total long-lived assets (1,428)   (1,330)
Total investments in unconsolidated joint ventures 0   0
Commercial & Other Real Estate | Operating Segments      
Segment Reporting Information [Line Items]      
Total revenues 3,948 154  
Total operating and interest expenses 5,005 (1,980)  
Equity in earnings (loss) of unconsolidated joint ventures 0 0  
Net operating income (loss) (1,057) 2,134  
Total assets 586,320   597,459
Total long-lived assets 542,737   547,923
Total investments in unconsolidated joint ventures 0   0
Multiple-Family Real Estate & Services | Operating Segments      
Segment Reporting Information [Line Items]      
Total revenues 62,977 46,517  
Total operating and interest expenses 27,053 24,786  
Equity in earnings (loss) of unconsolidated joint ventures (68) (487)  
Net operating income (loss) 35,856 $ 21,244  
Total assets 3,195,735   3,302,188
Total long-lived assets 2,985,057   3,101,286
Total investments in unconsolidated joint ventures $ 124,218   $ 126,158