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JOINT VENTURES AND PARTNERSHIPS - Summary (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) home community property | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) home community property | Jun. 30, 2019 USD ($) | Jul. 29, 2020 USD ($) home | Feb. 29, 2020 USD ($) home | Jan. 31, 2020 home | Dec. 31, 2019 USD ($)
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | $ 594,275 |  | $ 594,275 |  |  |  |  | $ 585,490
Number of real estate properties | community | 148 |  | 148 |  |  |  |  |
Financial information relating to unconsolidated joint ventures operations |  |  |  |  |  |  |  |
Operating income/(loss) | $ 8,021 | $ 6,625 | $ 11,388 | $ 6,674 |  |  |  |
Unconsolidated Joint Ventures |  |  |  |  |  |  |  |
Combined summary of balance sheets relating to unconsolidated joint ventures |  |  |  |  |  |  |  |
Total real estate, net | 1,922,313 |  | 1,922,313 |  |  |  |  | 1,901,081
Cash and cash equivalents | 30,656 |  | 30,656 |  |  |  |  | 29,823
Other assets | 216,356 |  | 216,356 |  |  |  |  | 172,941
Total assets | 2,169,325 |  | 2,169,325 |  |  |  |  | 2,103,845
Third party debt, net | 1,156,834 |  | 1,156,834 |  |  |  |  | 1,148,048
Accounts payable and accrued liabilities | 46,057 |  | 46,057 |  |  |  |  | 55,114
Total liabilities | 1,202,891 |  | 1,202,891 |  |  |  |  | 1,203,162
Total equity | 966,434 |  | 966,434 |  |  |  |  | $ 900,683
Financial information relating to unconsolidated joint ventures operations |  |  |  |  |  |  |  |
Total revenues | 37,312 | 76,926 | 78,626 | 158,458 |  |  |  |
Property operating expenses | 14,468 | 29,256 | 29,765 | 59,568 |  |  |  |
Real estate depreciation and amortization | 16,913 | 28,054 | 33,156 | 57,634 |  |  |  |
Operating income/(loss) | 5,931 | 19,616 | 15,705 | 41,256 |  |  |  |
Interest expense | (10,149) | (21,606) | (20,496) | (43,530) |  |  |  |
Gain (loss) on sale of property |  | 18,357 |  | 18,357 |  |  |  |
Net unrealized gain/(loss) on held investments | 29,312 |  | 29,312 |  |  |  |  |
Other income/(loss) | 117 | 9 | 109 | 1,634 |  |  |  |
Net income /(loss) | 25,211 | 16,376 | 24,630 | 17,717 |  |  |  |
Preferred Equity Investment Hillsboro Oregon |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Number of apartment homes | home |  |  |  |  |  |  | 276 |
UDR's Ownership Interest |  |  |  |  |  |  | 100.00% | 49.00%
Preferred Equity Investment Thousand Oaks |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Number of apartment homes | home |  |  |  |  |  | 142 |  |
Rate |  |  |  |  |  | 9.00% |  |
Preferred Equity Investment Thousand Oaks | Maximum |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
UDR commitment |  |  |  |  |  | $ 20,100 |  |
Preferred Equity Investment Queens, New York |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Number of apartment homes | home |  |  |  |  | 534 |  |  |
UDR commitment |  |  |  |  | $ 40,000 |  |  |
Rate |  |  |  |  | 13.00% |  |  |
Operating Community |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 302,588 |  | 302,588 |  |  |  |  | $ 313,053
Income from investments | $ (3,016) | 2,052 | $ (5,453) | (1,835) |  |  |  |
Operating Community | Unconsolidated Joint Venture UDR Met Life I Partnership |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Number of apartment homes | home | 150 |  | 150 |  |  |  |  |
Investment in unconsolidated entities | $ 27,927 |  | $ 27,927 |  |  |  |  | $ 28,812
UDR's Ownership Interest | 50.00% |  | 50.00% |  |  |  |  | 50.00%
Number of real estate properties | property | 1 |  | 1 |  |  |  |  |
Income from investments | $ (658) | (548) | $ (1,112) | (1,124) |  |  |  |
Operating Community | Unconsolidated Joint Venture UDR MetLife II Partnership |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Number of apartment homes | home | 1,250 |  | 1,250 |  |  |  |  |
Investment in unconsolidated entities | $ 149,971 |  | $ 149,971 |  |  |  |  | $ 150,893
UDR's Ownership Interest | 50.00% |  | 50.00% |  |  |  |  | 50.00%
Number of real estate properties | property | 7 |  | 7 |  |  |  |  |
Income from investments | $ 10 | 776 | $ (81) | 1,210 |  |  |  |
Operating Community | Unconsolidated Joint Venture Other MetLife |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Number of apartment homes | home | 1,437 |  | 1,437 |  |  |  |  |
Investment in unconsolidated entities | $ 90,262 |  | $ 90,262 |  |  |  |  | $ 98,441
UDR's Ownership Interest | 50.60% |  | 50.60% |  |  |  |  | 50.60%
Number of real estate properties | property | 5 |  | 5 |  |  |  |  |
Income from investments | $ (2,312) | (1,684) | $ (4,124) | (3,461) |  |  |  |
Operating Community | Unconsolidated Joint Venture West Coast Development JV |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Number of apartment homes | home | 293 |  | 293 |  |  |  |  |
Investment in unconsolidated entities | $ 34,428 |  | $ 34,428 |  |  |  |  | $ 34,907
UDR's Ownership Interest | 47.00% |  | 47.00% |  |  |  |  | 47.00%
Number of real estate properties | property | 1 |  | 1 |  |  |  |  |
Income from investments | $ (56) | (359) | $ (136) | (507) |  |  |  |
Operating Community | Sold Joint Ventures |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Income from investments |  | 3,867 |  | 2,047 |  |  |  |
Development Community | Preferred Equity Investment Hillsboro Oregon |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities |  |  |  |  |  |  |  | $ 17,064
Rate | 6.50% |  | 6.50% |  |  |  |  |
Income from investments |  | (10) | $ (46) | (171) |  |  |  |
Development Community | Preferred Equity Investment 1532 Harrison San Francisco, CA |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | $ 32,282 |  | 32,282 |  |  |  |  | 30,585
UDR commitment | $ 24,645 |  | $ 24,645 |  |  |  |  |
Rate | 11.00% |  | 11.00% |  |  |  |  |
Years to Maturity |  |  | 2 years |  |  |  |  |
Income from investments | $ 846 | 774 | $ 1,682 | 1,522 |  |  |  |
Participating Loan Years to Maturity |  |  | 2 years |  |  |  |  |
Development Community | Preferred Equity Investment 1200 Broadway Nashville TN |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 66,575 |  | $ 66,575 |  |  |  |  | 63,958
UDR commitment | $ 55,558 |  | $ 55,558 |  |  |  |  |
Rate | 8.00% |  | 8.00% |  |  |  |  |
Years to Maturity |  |  | 2 years 3 months 18 days |  |  |  |  |
Income from investments | $ 1,306 | 1,206 | $ 2,587 | 2,375 |  |  |  |
Participating Loan Years to Maturity |  |  | 2 years 3 months 18 days |  |  |  |  |
Development Community | Preferred Equity Investment 1641 Lincoln Santa Monica CA |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 11,016 |  | $ 11,016 |  |  |  |  | 10,379
UDR commitment | $ 8,800 |  | $ 8,800 |  |  |  |  |
Rate | 12.00% |  | 12.00% |  |  |  |  |
Years to Maturity |  |  | 2 years 1 month 6 days |  |  |  |  |
Income from investments | $ 323 | 287 | $ 637 | 562 |  |  |  |
Participating Loan Years to Maturity |  |  | 2 years 1 month 6 days |  |  |  |  |
Development Community | Preferred Equity Investment 1300 Fairmount Philadelphia, PA |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 57,031 |  | $ 57,031 |  |  |  |  | 51,215
UDR commitment | 51,393 |  | $ 51,393 |  |  |  |  |
Years to Maturity |  |  | 3 years 1 month 6 days |  |  |  |  |
Income from investments | 1,191 | 519 | $ 2,357 | 794 |  |  |  |
Participating Loan Years to Maturity |  |  | 3 years 1 month 6 days |  |  |  |  |
Development Community | Preferred Equity Investment Essex Orlando, FL |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 15,751 |  | $ 15,751 |  |  |  |  | 14,804
UDR commitment | $ 12,886 |  | $ 12,886 |  |  |  |  |
Rate | 12.50% |  | 12.50% |  |  |  |  |
Years to Maturity |  |  | 3 years 2 months 12 days |  |  |  |  |
Income from investments | $ 481 | 407 | $ 947 | 739 |  |  |  |
Participating Loan Years to Maturity |  |  | 3 years 2 months 12 days |  |  |  |  |
Development Community | Preferred Equity Investment Modera Lake Merritt, Oakland |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 29,562 |  | $ 29,562 |  |  |  |  | 22,653
UDR commitment | $ 27,250 |  | $ 27,250 |  |  |  |  |
Rate | 9.00% |  | 9.00% |  |  |  |  |
Years to Maturity |  |  | 3 years 9 months 18 days |  |  |  |  |
Income from investments | $ 652 | 256 | $ 1,226 | 256 |  |  |  |
Participating Loan Years to Maturity |  |  | 3 years 9 months 18 days |  |  |  |  |
Development Community | Preferred Equity Investment Thousand Oaks, CA |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 8,872 |  | $ 8,872 |  |  |  |  |
UDR commitment | $ 20,059 |  | $ 20,059 |  |  |  |  |
Rate | 9.00% |  | 9.00% |  |  |  |  |
Years to Maturity |  |  | 4 years 8 months 12 days |  |  |  |  |
Income from investments | $ 153 |  | $ 177 |  |  |  |  |
Participating Loan Years to Maturity |  |  | 4 years 8 months 12 days |  |  |  |  |
Development Community | Other Investment The Portals Washington, DC |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 50,713 |  | $ 50,713 |  |  |  |  | 48,181
UDR commitment | $ 38,559 |  | $ 38,559 |  |  |  |  |
Rate | 11.00% |  | 11.00% |  |  |  |  |
Years to Maturity |  |  | 10 months 24 days |  |  |  |  |
Income from investments | $ 1,389 | 1,234 | $ 2,724 | 2,407 |  |  |  |
Participating Loan Years to Maturity |  |  | 10 months 24 days |  |  |  |  |
Development Community | Other Investment Ventures |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 19,885 |  | $ 19,885 |  |  |  |  | 13,598
UDR commitment | 34,500 |  | 34,500 |  |  |  |  |
Income from investments | 4,696 | (100) | 4,550 | 25 |  |  |  |
Development Community | Preferred Equity Investments and Other Investments |  |  |  |  |  |  |  |
Unconsolidated entities |  |  |  |  |  |  |  |
Investment in unconsolidated entities | 291,687 |  | 291,687 |  |  |  |  | $ 272,437
Income from investments | $ 11,037 | $ 4,573 | $ 16,841 | $ 8,509 |  |  |  |

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