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Revenues - Disaggregation of Revenue (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) community | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) community | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | $ 360,620 | $ 368,464 | $ 1,062,253 | $ 1,126,363 |
Management and other fees from affiliates | 2,237 | 2,347 | 6,707 | 7,312 |
Revenues | $ 362,857 | 370,811 | $ 1,068,960 | 1,133,675 |
Occupancy threshold for classification as stabilized | 90.00% |  | 90.00% |  |
Apartment communities owned (in communities) | community | 246 |  | 246 |  |
Deferred revenue | $ 2,600 |  | $ 2,600 |  | $ 3,100
Deferred revenue, revenue recognized |  |  | 500 |  |
Deferred revenue balance from contracts with remaining performance obligations | 2,600 |  | 2,600 |  |
Rental income |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | 355,591 | 362,073 | 1,046,218 | 1,108,658 |
Other property |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | 5,029 | 6,391 | 16,035 | 17,705 |
Rental and other property revenues |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | 360,620 | 368,464 | 1,062,253 | 1,126,363 |
Rental and other property revenues | Same-property |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | 325,153 | 316,639 | 957,908 | 986,945 |
Rental and other property revenues | Acquisitions |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | 14,789 | 14,237 | 42,410 | 40,491 |
Rental and other property revenues | Development |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | 8,055 | 5,461 | 22,485 | 13,956 |
Rental and other property revenues | Redevelopment |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | 4,340 | 4,277 | 13,079 | 14,774 |
Rental and other property revenues | Non-residential/other, net |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | $ 11,319 | 13,119 | $ 35,721 | 52,491 |
Apartment communities owned (in communities) | community | 2 |  | 2 |  |
Rental and other property revenues | Straight line rent concession |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | $ (3,036) | 14,731 | $ (9,350) | 17,706 |
Rental and other property revenues | Operating Segments | Southern California |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | 150,807 | 136,651 | 434,926 | 426,987 |
Rental and other property revenues | Operating Segments | Northern California |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | 145,807 | 147,081 | 435,883 | 457,655 |
Rental and other property revenues | Operating Segments | Seattle Metro |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | 60,280 | 60,617 | 178,180 | 184,310 |
Rental and other property revenues | Other real estate assets |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Rental and other property | $ 3,726 | $ 24,115 | $ 13,264 | $ 57,411 |

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