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Schedule III: Real Estate and Accumulated Depreciation - Schedule of Real Estate and Accumulated Depreciation (Details)
$ in Thousands
Dec. 31, 2023
USD ($)
apartment
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 20,886      
Initial Cost, Land $ 1,375,186      
Initial Cost, Buildings and Improvements 4,064,662      
Costs Capitalized Subsequent to Consolidation 2,170,722      
Land 1,285,710      
Buildings and Improvements 6,324,857      
Total 7,610,567 $ 8,076,394 $ 6,885,081 $ 7,468,864
Accumulated Depreciation (AD) (2,245,589) $ (2,449,883) $ (2,284,793) $ (2,455,505)
Total Cost Net of Accumulated Depreciation 5,364,978      
Encumbrances $ 2,236,975      
Other Real Estate        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 3,331      
Initial Cost, Land $ 311,577      
Initial Cost, Buildings and Improvements 1,415,502      
Costs Capitalized Subsequent to Consolidation 37,098      
Land 311,574      
Buildings and Improvements 1,452,600      
Total 1,764,174      
Accumulated Depreciation (AD) (72,510)      
Total Cost Net of Accumulated Depreciation 1,691,664      
Encumbrances $ 166,399      
Other Real Estate | 707 Leahy        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 110      
Initial Cost, Land $ 20,956      
Initial Cost, Buildings and Improvements 62,605      
Costs Capitalized Subsequent to Consolidation 185      
Land 20,956      
Buildings and Improvements 62,790      
Total 83,746      
Accumulated Depreciation (AD) (3,069)      
Total Cost Net of Accumulated Depreciation 80,677      
Encumbrances $ 0      
Other Real Estate | The Reserve at Coconut Point        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 180      
Initial Cost, Land $ 5,162      
Initial Cost, Buildings and Improvements 66,593      
Costs Capitalized Subsequent to Consolidation 237      
Land 5,162      
Buildings and Improvements 66,830      
Total 71,992      
Accumulated Depreciation (AD) (4,732)      
Total Cost Net of Accumulated Depreciation 67,260      
Encumbrances $ 0      
Other Real Estate | District at Flagler Village, The        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 350      
Initial Cost, Land $ 14,472      
Initial Cost, Buildings and Improvements 156,718      
Costs Capitalized Subsequent to Consolidation 1,526      
Land 14,472      
Buildings and Improvements 158,244      
Total 172,716      
Accumulated Depreciation (AD) (8,721)      
Total Cost Net of Accumulated Depreciation 163,995      
Encumbrances $ 0      
Other Real Estate | Flamingo Point, North Tower        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 366      
Initial Cost, Land $ 91,529      
Initial Cost, Buildings and Improvements 290,682      
Costs Capitalized Subsequent to Consolidation 1,561      
Land 91,529      
Buildings and Improvements 292,243      
Total 383,772      
Accumulated Depreciation (AD) (13,602)      
Total Cost Net of Accumulated Depreciation 370,170      
Encumbrances $ 0      
Other Real Estate | Fremont        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 253      
Initial Cost, Land $ 7,218      
Initial Cost, Buildings and Improvements 92,621      
Costs Capitalized Subsequent to Consolidation 213      
Land 7,218      
Buildings and Improvements 92,834      
Total 100,052      
Accumulated Depreciation (AD) (4,651)      
Total Cost Net of Accumulated Depreciation 95,401      
Encumbrances 0      
Other Real Estate | Merrill House        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost, Land 13,768      
Initial Cost, Buildings and Improvements 74,541      
Costs Capitalized Subsequent to Consolidation $ 572      
Other Real Estate | Prism        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 136      
Land $ 13,768      
Buildings and Improvements 75,113      
Total 88,881      
Accumulated Depreciation (AD) (3,668)      
Total Cost Net of Accumulated Depreciation 85,213      
Encumbrances $ 0      
Other Real Estate | Willard Towers        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 525      
Initial Cost, Land $ 334      
Initial Cost, Buildings and Improvements 179,141      
Costs Capitalized Subsequent to Consolidation 12,701      
Land 334      
Buildings and Improvements 191,842      
Total 192,176      
Accumulated Depreciation (AD) (10,776)      
Total Cost Net of Accumulated Depreciation 181,400      
Encumbrances $ 0      
Other Real Estate | Watermarc at Biscayne Bay, The        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 296      
Initial Cost, Land $ 34,710      
Initial Cost, Buildings and Improvements 174,237      
Costs Capitalized Subsequent to Consolidation 2,531      
Land 34,710      
Buildings and Improvements 176,768      
Total 211,478      
Accumulated Depreciation (AD) (10,271)      
Total Cost Net of Accumulated Depreciation 201,207      
Encumbrances 0      
Other Real Estate | Other        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost, Land 4,863      
Initial Cost, Buildings and Improvements 0      
Costs Capitalized Subsequent to Consolidation 12,590      
Land 4,860      
Buildings and Improvements 12,590      
Total 17,450      
Accumulated Depreciation (AD) (4,183)      
Total Cost Net of Accumulated Depreciation 13,267      
Encumbrances $ 7,537      
Other Real Estate | Brizo Apartments        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 260      
Initial Cost, Land $ 7,652      
Initial Cost, Buildings and Improvements 60,170      
Costs Capitalized Subsequent to Consolidation 1,055      
Land 7,652      
Buildings and Improvements 61,225      
Total 68,877      
Accumulated Depreciation (AD) (738)      
Total Cost Net of Accumulated Depreciation 68,139      
Encumbrances $ 41,026      
Other Real Estate | Southgate Towers        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 495      
Initial Cost, Land $ 99,338      
Initial Cost, Buildings and Improvements 187,427      
Costs Capitalized Subsequent to Consolidation 3,392      
Land 99,338      
Buildings and Improvements 190,819      
Total 290,157      
Accumulated Depreciation (AD) (6,855)      
Total Cost Net of Accumulated Depreciation 283,302      
Encumbrances $ 84,336      
Other Real Estate | Villages at Old Towne        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 360      
Initial Cost, Land $ 11,575      
Initial Cost, Buildings and Improvements 70,767      
Costs Capitalized Subsequent to Consolidation 535      
Land 11,575      
Buildings and Improvements 71,302      
Total 82,877      
Accumulated Depreciation (AD) (1,244)      
Total Cost Net of Accumulated Depreciation 81,633      
Encumbrances $ 33,500      
Same Store Sales        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 17,555      
Initial Cost, Land $ 1,063,609      
Initial Cost, Buildings and Improvements 2,649,160      
Costs Capitalized Subsequent to Consolidation 2,133,624      
Land 974,136      
Buildings and Improvements 4,872,257      
Total 5,846,393      
Accumulated Depreciation (AD) (2,173,079)      
Total Cost Net of Accumulated Depreciation 3,673,314      
Encumbrances $ 2,070,576      
Same Store Sales | 21 Fitzsimons        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 601      
Initial Cost, Land $ 13,176      
Initial Cost, Buildings and Improvements 110,795      
Costs Capitalized Subsequent to Consolidation 40,086      
Land 13,176      
Buildings and Improvements 150,881      
Total 164,057      
Accumulated Depreciation (AD) (53,485)      
Total Cost Net of Accumulated Depreciation 110,572      
Encumbrances $ 81,838      
Same Store Sales | 3400 Avenue of the Arts        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 770      
Initial Cost, Land $ 57,241      
Initial Cost, Buildings and Improvements 65,506      
Costs Capitalized Subsequent to Consolidation 101,943      
Land 57,241      
Buildings and Improvements 167,449      
Total 224,690      
Accumulated Depreciation (AD) (116,299)      
Total Cost Net of Accumulated Depreciation 108,391      
Encumbrances $ 0      
Same Store Sales | 777 South Broad Street        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 146      
Initial Cost, Land $ 6,986      
Initial Cost, Buildings and Improvements 67,512      
Costs Capitalized Subsequent to Consolidation 5,229      
Land 6,986      
Buildings and Improvements 72,741      
Total 79,727      
Accumulated Depreciation (AD) (16,149)      
Total Cost Net of Accumulated Depreciation 63,578      
Encumbrances $ 37,051      
Same Store Sales | Axiom        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 115      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements 63,612      
Costs Capitalized Subsequent to Consolidation 5,133      
Land 0      
Buildings and Improvements 68,745      
Total 68,745      
Accumulated Depreciation (AD) (21,542)      
Total Cost Net of Accumulated Depreciation 47,203      
Encumbrances $ 0      
Same Store Sales | Bay Parc Plaza        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 474      
Initial Cost, Land $ 22,680      
Initial Cost, Buildings and Improvements 41,847      
Costs Capitalized Subsequent to Consolidation 65,092      
Land 22,680      
Buildings and Improvements 106,939      
Total 129,619      
Accumulated Depreciation (AD) (43,586)      
Total Cost Net of Accumulated Depreciation 86,033      
Encumbrances $ 69,987      
Same Store Sales | Boulder Creek        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 221      
Initial Cost, Land $ 754      
Initial Cost, Buildings and Improvements 7,730      
Costs Capitalized Subsequent to Consolidation 19,634      
Land 754      
Buildings and Improvements 27,364      
Total 28,118      
Accumulated Depreciation (AD) (21,125)      
Total Cost Net of Accumulated Depreciation 6,993      
Encumbrances $ 0      
Same Store Sales | Broadcast Center        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 279      
Initial Cost, Land $ 29,407      
Initial Cost, Buildings and Improvements 41,244      
Costs Capitalized Subsequent to Consolidation 44,820      
Land 29,407      
Buildings and Improvements 86,064      
Total 115,471      
Accumulated Depreciation (AD) (46,287)      
Total Cost Net of Accumulated Depreciation 69,184      
Encumbrances $ 0      
Same Store Sales | Calhoun Beach Club        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 332      
Initial Cost, Land $ 11,708      
Initial Cost, Buildings and Improvements 73,334      
Costs Capitalized Subsequent to Consolidation 62,140      
Land 11,708      
Buildings and Improvements 135,474      
Total 147,182      
Accumulated Depreciation (AD) (101,407)      
Total Cost Net of Accumulated Depreciation 45,775      
Encumbrances $ 0      
Same Store Sales | Charlesbank Apartment Homes        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 44      
Initial Cost, Land $ 3,399      
Initial Cost, Buildings and Improvements 11,726      
Costs Capitalized Subsequent to Consolidation 1,720      
Land 3,399      
Buildings and Improvements 13,446      
Total 16,845      
Accumulated Depreciation (AD) (4,902)      
Total Cost Net of Accumulated Depreciation 11,943      
Encumbrances $ 0      
Same Store Sales | Chestnut Hall        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 315      
Initial Cost, Land $ 12,338      
Initial Cost, Buildings and Improvements 14,299      
Costs Capitalized Subsequent to Consolidation 14,895      
Land 12,338      
Buildings and Improvements 29,194      
Total 41,532      
Accumulated Depreciation (AD) (16,044)      
Total Cost Net of Accumulated Depreciation 25,488      
Encumbrances $ 32,291      
Same Store Sales | Flamingo Point, Center Tower        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 513      
Initial Cost, Land $ 15,279      
Initial Cost, Buildings and Improvements 29,358      
Costs Capitalized Subsequent to Consolidation 240,993      
Land 15,279      
Buildings and Improvements 270,351      
Total 285,630      
Accumulated Depreciation (AD) (146,577)      
Total Cost Net of Accumulated Depreciation 139,053      
Encumbrances $ 0      
Same Store Sales | Flamingo Point, South Tower        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 260      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements 14,570      
Costs Capitalized Subsequent to Consolidation 74,656      
Land 0      
Buildings and Improvements 89,226      
Total 89,226      
Accumulated Depreciation (AD) (21,537)      
Total Cost Net of Accumulated Depreciation 67,689      
Encumbrances $ 0      
Same Store Sales | Foxchase        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 2,113      
Initial Cost, Land $ 15,496      
Initial Cost, Buildings and Improvements 96,062      
Costs Capitalized Subsequent to Consolidation 95,399      
Land 15,496      
Buildings and Improvements 191,461      
Total 206,957      
Accumulated Depreciation (AD) (127,305)      
Total Cost Net of Accumulated Depreciation 79,652      
Encumbrances $ 170,000      
Same Store Sales | Hidden Cove        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 334      
Initial Cost, Land $ 3,043      
Initial Cost, Buildings and Improvements 17,616      
Costs Capitalized Subsequent to Consolidation 20,372      
Land 3,043      
Buildings and Improvements 37,988      
Total 41,031      
Accumulated Depreciation (AD) (23,334)      
Total Cost Net of Accumulated Depreciation 17,697      
Encumbrances $ 64,757      
Same Store Sales | Hidden Cove II        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 118      
Initial Cost, Land $ 12,849      
Initial Cost, Buildings and Improvements 6,530      
Costs Capitalized Subsequent to Consolidation 7,518      
Land 12,849      
Buildings and Improvements 14,048      
Total 26,897      
Accumulated Depreciation (AD) (7,867)      
Total Cost Net of Accumulated Depreciation 19,030      
Encumbrances $ 25,183      
Same Store Sales | Hillcreste        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 315      
Initial Cost, Land $ 35,862      
Initial Cost, Buildings and Improvements 47,216      
Costs Capitalized Subsequent to Consolidation 26,720      
Land 35,862      
Buildings and Improvements 73,936      
Total 109,798      
Accumulated Depreciation (AD) (41,057)      
Total Cost Net of Accumulated Depreciation 68,741      
Encumbrances $ 0      
Same Store Sales | Indian Oaks        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 254      
Initial Cost, Land $ 24,523      
Initial Cost, Buildings and Improvements 15,801      
Costs Capitalized Subsequent to Consolidation 13,395      
Land 24,523      
Buildings and Improvements 29,196      
Total 53,719      
Accumulated Depreciation (AD) (21,548)      
Total Cost Net of Accumulated Depreciation 32,171      
Encumbrances $ 58,955      
Same Store Sales | Indigo Apartment Homes        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 463      
Initial Cost, Land $ 26,932      
Initial Cost, Buildings and Improvements 296,116      
Costs Capitalized Subsequent to Consolidation 12,194      
Land 26,932      
Buildings and Improvements 308,310      
Total 335,242      
Accumulated Depreciation (AD) (80,869)      
Total Cost Net of Accumulated Depreciation 254,373      
Encumbrances $ 171,938      
Same Store Sales | Laurel Crossing        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 418      
Initial Cost, Land $ 49,474      
Initial Cost, Buildings and Improvements 17,756      
Costs Capitalized Subsequent to Consolidation 20,756      
Land 49,474      
Buildings and Improvements 38,512      
Total 87,986      
Accumulated Depreciation (AD) (22,212)      
Total Cost Net of Accumulated Depreciation 65,774      
Encumbrances $ 0      
Same Store Sales | Lincoln Place        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 795      
Initial Cost, Land $ 128,332      
Initial Cost, Buildings and Improvements 10,439      
Costs Capitalized Subsequent to Consolidation 256,641      
Land 44,198      
Buildings and Improvements 351,214      
Total 395,412      
Accumulated Depreciation (AD) (193,540)      
Total Cost Net of Accumulated Depreciation 201,872      
Encumbrances $ 169,960      
Same Store Sales | Malibu Canyon        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 698      
Initial Cost, Land $ 69,834      
Initial Cost, Buildings and Improvements 53,438      
Costs Capitalized Subsequent to Consolidation 45,720      
Land 69,834      
Buildings and Improvements 99,158      
Total 168,992      
Accumulated Depreciation (AD) (70,914)      
Total Cost Net of Accumulated Depreciation 98,078      
Encumbrances $ 158,950      
Same Store Sales | Mariners Cove        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 500      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements 66,861      
Costs Capitalized Subsequent to Consolidation 18,641      
Land 0      
Buildings and Improvements 85,502      
Total 85,502      
Accumulated Depreciation (AD) (52,801)      
Total Cost Net of Accumulated Depreciation 32,701      
Encumbrances $ 0      
Same Store Sales | Meadow Creek        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 332      
Initial Cost, Land $ 1,435      
Initial Cost, Buildings and Improvements 24,533      
Costs Capitalized Subsequent to Consolidation 13,660      
Land 1,435      
Buildings and Improvements 38,193      
Total 39,628      
Accumulated Depreciation (AD) (27,091)      
Total Cost Net of Accumulated Depreciation 12,537      
Encumbrances $ 0      
Same Store Sales | Mezzo        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 95      
Initial Cost, Land $ 4,292      
Initial Cost, Buildings and Improvements 34,178      
Costs Capitalized Subsequent to Consolidation 3,616      
Land 4,292      
Buildings and Improvements 37,794      
Total 42,086      
Accumulated Depreciation (AD) (12,332)      
Total Cost Net of Accumulated Depreciation 29,754      
Encumbrances $ 0      
Same Store Sales | Monterey Grove        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 224      
Initial Cost, Land $ 34,325      
Initial Cost, Buildings and Improvements 21,939      
Costs Capitalized Subsequent to Consolidation 19,497      
Land 34,325      
Buildings and Improvements 41,436      
Total 75,761      
Accumulated Depreciation (AD) (20,533)      
Total Cost Net of Accumulated Depreciation 55,228      
Encumbrances $ 45,541      
Same Store Sales | Ocean House and on into Prospect        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 53      
Initial Cost, Land $ 12,528      
Initial Cost, Buildings and Improvements 18,805      
Costs Capitalized Subsequent to Consolidation 17,298      
Land 12,528      
Buildings and Improvements 36,103      
Total 48,631      
Accumulated Depreciation (AD) (15,618)      
Total Cost Net of Accumulated Depreciation 33,013      
Encumbrances $ 0      
Same Store Sales | One Ardmore        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 110      
Initial Cost, Land $ 4,929      
Initial Cost, Buildings and Improvements 61,631      
Costs Capitalized Subsequent to Consolidation 4,135      
Land 4,929      
Buildings and Improvements 65,766      
Total 70,695      
Accumulated Depreciation (AD) (11,520)      
Total Cost Net of Accumulated Depreciation 59,175      
Encumbrances $ 28,504      
Same Store Sales | One Canal        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 310      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements 15,873      
Costs Capitalized Subsequent to Consolidation 184,077      
Land 0      
Buildings and Improvements 199,950      
Total 199,950      
Accumulated Depreciation (AD) (59,287)      
Total Cost Net of Accumulated Depreciation 140,663      
Encumbrances $ 0      
Same Store Sales | Pacific Bay Vistas        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 308      
Initial Cost, Land $ 28,694      
Initial Cost, Buildings and Improvements 62,460      
Costs Capitalized Subsequent to Consolidation 34,167      
Land 23,354      
Buildings and Improvements 101,967      
Total 125,321      
Accumulated Depreciation (AD) (51,306)      
Total Cost Net of Accumulated Depreciation 74,015      
Encumbrances $ 95,804      
Same Store Sales | Pacifica Park        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 104      
Initial Cost, Land $ 12,970      
Initial Cost, Buildings and Improvements 6,579      
Costs Capitalized Subsequent to Consolidation 9,765      
Land 12,970      
Buildings and Improvements 16,344      
Total 29,314      
Accumulated Depreciation (AD) (10,197)      
Total Cost Net of Accumulated Depreciation 19,117      
Encumbrances $ 37,264      
Same Store Sales | Palazzo at Park La Brea, The        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 521      
Initial Cost, Land $ 48,362      
Initial Cost, Buildings and Improvements 125,464      
Costs Capitalized Subsequent to Consolidation 61,144      
Land 48,362      
Buildings and Improvements 186,608      
Total 234,970      
Accumulated Depreciation (AD) (111,787)      
Total Cost Net of Accumulated Depreciation 123,183      
Encumbrances $ 205,883      
Same Store Sales | Palazzo East at Park La Brea, The        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 611      
Initial Cost, Land $ 72,578      
Initial Cost, Buildings and Improvements 136,503      
Costs Capitalized Subsequent to Consolidation 43,699      
Land 72,578      
Buildings and Improvements 180,202      
Total 252,780      
Accumulated Depreciation (AD) (110,240)      
Total Cost Net of Accumulated Depreciation 142,540      
Encumbrances $ 174,531      
Same Store Sales | Parc Mosaic        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 226      
Initial Cost, Land $ 15,300      
Initial Cost, Buildings and Improvements 0      
Costs Capitalized Subsequent to Consolidation 111,319      
Land 15,300      
Buildings and Improvements 111,319      
Total 126,619      
Accumulated Depreciation (AD) (24,893)      
Total Cost Net of Accumulated Depreciation 101,726      
Encumbrances $ 0      
Same Store Sales | Peachtree Park        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 303      
Initial Cost, Land $ 4,684      
Initial Cost, Buildings and Improvements 11,713      
Costs Capitalized Subsequent to Consolidation 17,696      
Land 4,684      
Buildings and Improvements 29,409      
Total 34,093      
Accumulated Depreciation (AD) (20,455)      
Total Cost Net of Accumulated Depreciation 13,638      
Encumbrances $ 0      
Same Store Sales | Preserve at Marin        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 126      
Initial Cost, Land $ 13,516      
Initial Cost, Buildings and Improvements 30,132      
Costs Capitalized Subsequent to Consolidation 81,922      
Land 13,516      
Buildings and Improvements 112,054      
Total 125,570      
Accumulated Depreciation (AD) (48,841)      
Total Cost Net of Accumulated Depreciation 76,729      
Encumbrances $ 0      
Same Store Sales | Royal Crest Estates        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 588      
Initial Cost, Land $ 51,292      
Initial Cost, Buildings and Improvements 36,808      
Costs Capitalized Subsequent to Consolidation 29,995      
Land 51,292      
Buildings and Improvements 66,803      
Total 118,095      
Accumulated Depreciation (AD) (45,758)      
Total Cost Net of Accumulated Depreciation 72,337      
Encumbrances $ 0      
Same Store Sales | Saybrook Point        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 324      
Initial Cost, Land $ 32,842      
Initial Cost, Buildings and Improvements 84,457      
Costs Capitalized Subsequent to Consolidation 27,878      
Land 32,842      
Buildings and Improvements 112,335      
Total 145,177      
Accumulated Depreciation (AD) (37,931)      
Total Cost Net of Accumulated Depreciation 107,246      
Encumbrances $ 107,347      
Same Store Sales | SouthStar Lofts        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 85      
Initial Cost, Land $ 1,780      
Initial Cost, Buildings and Improvements 37,428      
Costs Capitalized Subsequent to Consolidation 1,458      
Land 1,780      
Buildings and Improvements 38,886      
Total 40,666      
Accumulated Depreciation (AD) (8,261)      
Total Cost Net of Accumulated Depreciation 32,405      
Encumbrances $ 17,000      
Same Store Sales | Sterling Apartment Homes, The        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 534      
Initial Cost, Land $ 8,871      
Initial Cost, Buildings and Improvements 55,365      
Costs Capitalized Subsequent to Consolidation 120,985      
Land 8,871      
Buildings and Improvements 176,350      
Total 185,221      
Accumulated Depreciation (AD) (121,690)      
Total Cost Net of Accumulated Depreciation 63,531      
Encumbrances $ 0      
Same Store Sales | The Left Bank        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 282      
Initial Cost, Land $ 0      
Initial Cost, Buildings and Improvements 130,893      
Costs Capitalized Subsequent to Consolidation 26,672      
Land 0      
Buildings and Improvements 157,565      
Total 157,565      
Accumulated Depreciation (AD) (34,431)      
Total Cost Net of Accumulated Depreciation 123,134      
Encumbrances $ 73,658      
Same Store Sales | Tremont        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 78      
Initial Cost, Land $ 5,274      
Initial Cost, Buildings and Improvements 18,011      
Costs Capitalized Subsequent to Consolidation 4,365      
Land 5,274      
Buildings and Improvements 22,376      
Total 27,650      
Accumulated Depreciation (AD) (7,708)      
Total Cost Net of Accumulated Depreciation 19,942      
Encumbrances $ 0      
Same Store Sales | Villas at Park La Brea, The        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 250      
Initial Cost, Land $ 8,630      
Initial Cost, Buildings and Improvements 48,871      
Costs Capitalized Subsequent to Consolidation 24,942      
Land 8,630      
Buildings and Improvements 73,813      
Total 82,443      
Accumulated Depreciation (AD) (46,528)      
Total Cost Net of Accumulated Depreciation 35,915      
Encumbrances $ 0      
Same Store Sales | Villas of Pasadena        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 92      
Initial Cost, Land $ 9,693      
Initial Cost, Buildings and Improvements 6,818      
Costs Capitalized Subsequent to Consolidation 5,826      
Land 9,693      
Buildings and Improvements 12,644      
Total 22,337      
Accumulated Depreciation (AD) (7,888)      
Total Cost Net of Accumulated Depreciation 14,449      
Encumbrances $ 20,500      
Same Store Sales | Vivo        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 91      
Initial Cost, Land $ 6,450      
Initial Cost, Buildings and Improvements 35,974      
Costs Capitalized Subsequent to Consolidation 6,623      
Land 6,450      
Buildings and Improvements 42,597      
Total 49,047      
Accumulated Depreciation (AD) (19,812)      
Total Cost Net of Accumulated Depreciation 29,235      
Encumbrances $ 0      
Same Store Sales | Waterways Village        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 180      
Initial Cost, Land $ 4,504      
Initial Cost, Buildings and Improvements 11,064      
Costs Capitalized Subsequent to Consolidation 19,088      
Land 4,504      
Buildings and Improvements 30,152      
Total 34,656      
Accumulated Depreciation (AD) (19,909)      
Total Cost Net of Accumulated Depreciation 14,747      
Encumbrances $ 0      
Same Store Sales | City Center on 7th        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 700      
Initial Cost, Land $ 35,196      
Initial Cost, Buildings and Improvements 186,823      
Costs Capitalized Subsequent to Consolidation 33,250      
Land 35,196      
Buildings and Improvements 220,073      
Total 255,269      
Accumulated Depreciation (AD) (21,858)      
Total Cost Net of Accumulated Depreciation 233,411      
Encumbrances $ 0      
Same Store Sales | North Park        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 310      
Initial Cost, Land $ 42,900      
Initial Cost, Buildings and Improvements 68,090      
Costs Capitalized Subsequent to Consolidation 11,492      
Land 42,933      
Buildings and Improvements 79,549      
Total 122,482      
Accumulated Depreciation (AD) (6,726)      
Total Cost Net of Accumulated Depreciation 115,756      
Encumbrances $ 73,634      
Same Store Sales | Residences at Capital Crescent Trail        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 258      
Initial Cost, Land $ 15,975      
Initial Cost, Buildings and Improvements 84,167      
Costs Capitalized Subsequent to Consolidation 8,019      
Land 15,975      
Buildings and Improvements 92,186      
Total 108,161      
Accumulated Depreciation (AD) (7,664)      
Total Cost Net of Accumulated Depreciation 100,497      
Encumbrances $ 0      
Same Store Sales | Vaughan Place        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Number of apartment homes sold | apartment 382      
Initial Cost, Land $ 47,276      
Initial Cost, Buildings and Improvements 125,213      
Costs Capitalized Subsequent to Consolidation 17,339      
Land 47,244      
Buildings and Improvements 142,584      
Total 189,828      
Accumulated Depreciation (AD) (12,428)      
Total Cost Net of Accumulated Depreciation 177,400      
Encumbrances $ 150,000