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Revenues - Disaggregation of Revenue (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) community | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | $ 1,658,264 | $ 1,595,675 | $ 1,431,418
Management and other fees from affiliates | 11,131 | 11,139 | 9,138
Total revenues | $ 1,669,395 | 1,606,814 | 1,440,556
Apartment communities owned (in communities) | community | 252 |  |
Rental income |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | $ 1,636,070 | 1,573,368 | 1,410,197
Other property |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | 22,194 | 22,307 | 21,221
Rental and other property |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | 1,658,264 | 1,595,675 | 1,431,418
Rental and other property | Same-property |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | $ 1,581,890 | 1,515,505 | 1,364,379
Occupancy threshold for classification as stabilized | 90.00% |  |
Rental and other property | Acquisitions |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | $ 5,449 | 1,561 | 0
Rental and other property | Development |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | 22,883 | 20,425 | 15,807
Rental and other property | Redevelopment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | 6,232 | 5,766 | 6,170
Rental and other property | Non-residential/other, net |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | $ 44,353 | 57,976 | 56,377
Apartment communities owned (in communities) | community | 2 |  |
Rental and other property | Straight line rent concession |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Straight line rent concession | $ (2,543) | (5,558) | (11,315)
Rental and other property | Operating segments | Southern California |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | 682,116 | 646,252 | 574,129
Rental and other property | Operating segments | Northern California |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | 666,836 | 639,306 | 584,034
Rental and other property | Operating segments | Seattle Metro |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | 282,092 | 271,248 | 239,839
Rental and other property | Other real estate assets |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Rental and other property | $ 27,220 | $ 38,869 | $ 33,416

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