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UNCONSOLIDATED ENTITIES (UNITED DOMINION REALTY, L.P.) - Summary Financial Information (Details) - UDR Lighthouse DownREIT L.P. - United Dominion Realty L.P. - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019
Total real estate, net | $ 1,088,125 |  | $ 1,106,703
Cash and cash equivalents | 20 |  | 20
Note receivable from the General Partner | 220,622 |  | 222,853
Other assets | 5,312 |  | 4,829
Total assets | 1,314,079 |  | 1,334,405
Secured debt, net | 426,724 |  | 427,592
Other liabilities | 23,628 |  | 28,087
Liabilities | 450,352 |  | 455,679
Total capital | 863,727 |  | $ 878,726
Total revenues | 32,678 | $ 31,606 |
Property operating expenses | (13,309) | (13,096) |
Real estate depreciation and amortization | (20,986) | (20,294) |
Operating income/(loss) | (1,617) | (1,784) |
Interest expense | (3,618) | (3,888) |
Other income/(loss) | 1,889 | 1,988 |
Net income /(loss) | $ (3,346) | $ (3,684) |

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