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SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2025
USD ($)
apartment
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Real Estate and Accumulated Depreciation [Line Items]      
Encumbrance $ 784,347    
Initial cost      
Land 3,308,897    
Buildings and improvements 12,060,444    
Costs capitalized subsequent to acquisition 3,067,244    
Gross amount carried at close of period      
Land and improvements 3,363,169    
Buildings and improvements 15,073,416    
Total 18,436,585    
Accumulated depreciation (6,532,003) $ (6,150,618) $ (5,664,931)
Aggregate cost for federal income tax purpose 14,600,000    
Rental properties:      
Acquisition, development, and improvement of real estate 1,279,457 1,614,570 235,423
Disposition of real estate and other (432,390) (160,275) (66,427)
Balance at the end of year 18,436,585    
Accumulated depreciation:      
Balance at beginning of year 6,150,618 5,664,931 5,152,133
Depreciation expense 595,867 571,813 545,702
Accumulated depreciation - Disposals and other (214,482) (86,126) (32,904)
Balance at the end of year $ 6,532,003 6,150,618 5,664,931
Encumbered Apartment Communities      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 4,126    
Encumbrance $ 784,347    
Initial cost      
Land 281,264    
Buildings and improvements 1,062,664    
Costs capitalized subsequent to acquisition 200,547    
Gross amount carried at close of period      
Land and improvements 283,931    
Buildings and improvements 1,260,544    
Total 1,544,475    
Accumulated depreciation (551,453)    
Rental properties:      
Balance at the end of year 1,544,475    
Accumulated depreciation:      
Balance at the end of year $ 551,453    
Encumbered Apartment Communities | 101 San Fernando      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 323    
Encumbrance $ 37,681    
Initial cost      
Land 4,173    
Buildings and improvements 58,961    
Costs capitalized subsequent to acquisition 23,239    
Gross amount carried at close of period      
Land and improvements 4,173    
Buildings and improvements 82,200    
Total 86,373    
Accumulated depreciation $ (47,536)    
Date of construction 2001    
Date acquired Jul-10    
Rental properties:      
Balance at the end of year $ 86,373    
Accumulated depreciation:      
Balance at the end of year $ 47,536    
Encumbered Apartment Communities | Belmont Station      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 275    
Encumbrance $ 29,361    
Initial cost      
Land 8,100    
Buildings and improvements 66,666    
Costs capitalized subsequent to acquisition 11,984    
Gross amount carried at close of period      
Land and improvements 8,267    
Buildings and improvements 78,483    
Total 86,750    
Accumulated depreciation $ (48,159)    
Date of construction 2009    
Date acquired Mar-09    
Rental properties:      
Balance at the end of year $ 86,750    
Accumulated depreciation:      
Balance at the end of year $ 48,159    
Encumbered Apartment Communities | Belmont Station | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Belmont Station | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Brio      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 300    
Encumbrance $ 64,860    
Initial cost      
Land 16,885    
Buildings and improvements 151,741    
Costs capitalized subsequent to acquisition 5,796    
Gross amount carried at close of period      
Land and improvements 16,885    
Buildings and improvements 157,537    
Total 174,422    
Accumulated depreciation $ (38,823)    
Date of construction 2015    
Date acquired Jun-19    
Rental properties:      
Balance at the end of year $ 174,422    
Accumulated depreciation:      
Balance at the end of year $ 38,823    
Encumbered Apartment Communities | Brio | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Brio | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Fountain Park      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 705    
Encumbrance $ 83,135    
Initial cost      
Land 25,073    
Buildings and improvements 94,980    
Costs capitalized subsequent to acquisition 50,647    
Gross amount carried at close of period      
Land and improvements 25,203    
Buildings and improvements 145,497    
Total 170,700    
Accumulated depreciation $ (109,028)    
Date of construction 2002    
Date acquired Feb-04    
Rental properties:      
Balance at the end of year $ 170,700    
Accumulated depreciation:      
Balance at the end of year $ 109,028    
Encumbered Apartment Communities | Fountain Park | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Fountain Park | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Lawrence Station      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 336    
Encumbrance $ 76,925    
Initial cost      
Land 45,532    
Buildings and improvements 106,735    
Costs capitalized subsequent to acquisition 8,367    
Gross amount carried at close of period      
Land and improvements 45,532    
Buildings and improvements 115,102    
Total 160,634    
Accumulated depreciation $ (51,465)    
Date of construction 2012    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 160,634    
Accumulated depreciation:      
Balance at the end of year $ 51,465    
Encumbered Apartment Communities | Lawrence Station | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Encumbered Apartment Communities | Lawrence Station | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Magnolia Square/Magnolia Lane      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 188    
Encumbrance $ 52,465    
Initial cost      
Land 8,190    
Buildings and improvements 24,736    
Costs capitalized subsequent to acquisition 20,412    
Gross amount carried at close of period      
Land and improvements 8,191    
Buildings and improvements 45,147    
Total 53,338    
Accumulated depreciation $ (33,965)    
Date of construction 1963    
Date acquired Sep-07    
Rental properties:      
Balance at the end of year $ 53,338    
Accumulated depreciation:      
Balance at the end of year $ 33,965    
Encumbered Apartment Communities | Magnolia Square/Magnolia Lane | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Magnolia Square/Magnolia Lane | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Marquis      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 166    
Encumbrance $ 45,601    
Initial cost      
Land 20,495    
Buildings and improvements 47,823    
Costs capitalized subsequent to acquisition 3,731    
Gross amount carried at close of period      
Land and improvements 20,495    
Buildings and improvements 51,554    
Total 72,049    
Accumulated depreciation $ (12,731)    
Date of construction 2015    
Date acquired Dec-18    
Rental properties:      
Balance at the end of year $ 72,049    
Accumulated depreciation:      
Balance at the end of year $ 12,731    
Encumbered Apartment Communities | Marquis | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Marquis | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Paragon      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 301    
Encumbrance $ 59,232    
Initial cost      
Land 32,230    
Buildings and improvements 77,320    
Costs capitalized subsequent to acquisition 7,552    
Gross amount carried at close of period      
Land and improvements 32,230    
Buildings and improvements 84,872    
Total 117,102    
Accumulated depreciation $ (33,369)    
Date of construction 2013    
Date acquired Jul-14    
Rental properties:      
Balance at the end of year $ 117,102    
Accumulated depreciation:      
Balance at the end of year $ 33,369    
Encumbered Apartment Communities | Paragon | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Paragon | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Sage at Cupertino      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 230    
Encumbrance $ 51,917    
Initial cost      
Land 35,719    
Buildings and improvements 53,449    
Costs capitalized subsequent to acquisition 17,222    
Gross amount carried at close of period      
Land and improvements 35,719    
Buildings and improvements 70,671    
Total 106,390    
Accumulated depreciation $ (26,859)    
Date of construction 1971    
Date acquired Mar-17    
Rental properties:      
Balance at the end of year $ 106,390    
Accumulated depreciation:      
Balance at the end of year $ 26,859    
Encumbered Apartment Communities | Sage at Cupertino | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Sage at Cupertino | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | The Barkley      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 161    
Encumbrance $ 14,958    
Initial cost      
Land 0    
Buildings and improvements 8,520    
Costs capitalized subsequent to acquisition 10,294    
Gross amount carried at close of period      
Land and improvements 2,353    
Buildings and improvements 16,461    
Total 18,814    
Accumulated depreciation $ (14,676)    
Date of construction 1984    
Date acquired Apr-00    
Rental properties:      
Balance at the end of year $ 18,814    
Accumulated depreciation:      
Balance at the end of year $ 14,676    
Encumbered Apartment Communities | The Barkley | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | The Barkley | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | The Commons      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 264    
Encumbrance $ 57,765    
Initial cost      
Land 12,555    
Buildings and improvements 29,307    
Costs capitalized subsequent to acquisition 14,675    
Gross amount carried at close of period      
Land and improvements 12,556    
Buildings and improvements 43,981    
Total 56,537    
Accumulated depreciation $ (26,334)    
Date of construction 1973    
Date acquired Jul-10    
Rental properties:      
Balance at the end of year $ 56,537    
Accumulated depreciation:      
Balance at the end of year $ 26,334    
Encumbered Apartment Communities | The Commons | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | The Commons | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | The Dylan      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 184    
Encumbrance $ 56,286    
Initial cost      
Land 19,984    
Buildings and improvements 82,286    
Costs capitalized subsequent to acquisition 7,322    
Gross amount carried at close of period      
Land and improvements 19,990    
Buildings and improvements 89,602    
Total 109,592    
Accumulated depreciation $ (33,847)    
Date of construction 2015    
Date acquired Mar-15    
Rental properties:      
Balance at the end of year $ 109,592    
Accumulated depreciation:      
Balance at the end of year $ 33,847    
Encumbered Apartment Communities | The Dylan | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | The Dylan | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | The Galloway      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 506    
Encumbrance $ 102,939    
Initial cost      
Land 32,966    
Buildings and improvements 184,499    
Costs capitalized subsequent to acquisition 10,840    
Gross amount carried at close of period      
Land and improvements 32,966    
Buildings and improvements 195,339    
Total 228,305    
Accumulated depreciation $ (42,736)    
Date of construction 2016    
Date acquired Jan-20    
Rental properties:      
Balance at the end of year $ 228,305    
Accumulated depreciation:      
Balance at the end of year $ 42,736    
Encumbered Apartment Communities | The Galloway | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | The Galloway | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | The Huxley      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 187    
Encumbrance $ 51,222    
Initial cost      
Land 19,362    
Buildings and improvements 75,641    
Costs capitalized subsequent to acquisition 8,466    
Gross amount carried at close of period      
Land and improvements 19,371    
Buildings and improvements 84,098    
Total 103,469    
Accumulated depreciation $ (31,925)    
Date of construction 2014    
Date acquired Mar-15    
Rental properties:      
Balance at the end of year $ 103,469    
Accumulated depreciation:      
Balance at the end of year $ 31,925    
Encumbered Apartment Communities | The Huxley | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | The Huxley | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Brookside Oaks | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Brookside Oaks | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Bridgeport | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Bridgeport | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | City View | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | City View | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Domaine | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Domaine | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Fairhaven | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Fairhaven | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Form 15 | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Form 15 | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Foster’s Landing | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Encumbered Apartment Communities | Foster’s Landing | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Hillsborough Park      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 235    
Initial cost      
Land $ 13,381    
Buildings and improvements 85,332    
Costs capitalized subsequent to acquisition 817    
Gross amount carried at close of period      
Land and improvements 13,381    
Buildings and improvements 86,149    
Total 99,530    
Accumulated depreciation $ (3,638)    
Date of construction 1999    
Date acquired Oct-24    
Rental properties:      
Balance at the end of year $ 99,530    
Accumulated depreciation:      
Balance at the end of year $ 3,638    
Encumbered Apartment Communities | Hillsborough Park | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Hillsborough Park | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Montanosa | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Encumbered Apartment Communities | Montanosa | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Montebello | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Montebello | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Montejo | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Montejo | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | 1000 Kiely | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | 1000 Kiely | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | The Carlyle      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 132    
Initial cost      
Land $ 6,344    
Buildings and improvements 48,086    
Costs capitalized subsequent to acquisition 1,216    
Gross amount carried at close of period      
Land and improvements 6,344    
Buildings and improvements 49,302    
Total 55,646    
Accumulated depreciation $ (2,115)    
Date of construction 2000    
Date acquired Oct-24    
Rental properties:      
Balance at the end of year $ 55,646    
Accumulated depreciation:      
Balance at the end of year $ 2,115    
Encumbered Apartment Communities | The Carlyle | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | The Carlyle | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Township      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 132    
Initial cost      
Land $ 19,812    
Buildings and improvements 70,619    
Costs capitalized subsequent to acquisition 3,080    
Gross amount carried at close of period      
Land and improvements 19,812    
Buildings and improvements 73,699    
Total 93,511    
Accumulated depreciation $ (16,851)    
Date of construction 2014    
Date acquired Sep-19    
Rental properties:      
Balance at the end of year $ 93,511    
Accumulated depreciation:      
Balance at the end of year $ 16,851    
Encumbered Apartment Communities | Township | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Township | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Valley Park | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Valley Park | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Villa Angelina | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Villa Angelina | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Encumbered Apartment Communities | Highridge | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Encumbered Apartment Communities | Highridge | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 51,468    
Initial cost      
Land $ 2,980,852    
Buildings and improvements 10,981,195    
Costs capitalized subsequent to acquisition 2,848,506    
Gross amount carried at close of period      
Land and improvements 3,031,096    
Buildings and improvements 13,779,457    
Total 16,810,553    
Accumulated depreciation (5,957,556)    
Rental properties:      
Balance at the end of year 16,810,553    
Accumulated depreciation:      
Balance at the end of year $ 5,957,556    
Unencumbered Apartment Communities | 101 San Fernando | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | 101 San Fernando | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | 1250 Lakeside      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 250    
Initial cost      
Land $ 15,104    
Buildings and improvements 128,290    
Costs capitalized subsequent to acquisition 8    
Gross amount carried at close of period      
Land and improvements 15,104    
Buildings and improvements 128,298    
Total 143,402    
Accumulated depreciation $ (555)    
Date of construction 2021    
Date acquired Nov-25    
Rental properties:      
Balance at the end of year $ 143,402    
Accumulated depreciation:      
Balance at the end of year $ 555    
Unencumbered Apartment Communities | Agora      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 49    
Initial cost      
Land $ 4,932    
Buildings and improvements 60,423    
Costs capitalized subsequent to acquisition 3,391    
Gross amount carried at close of period      
Land and improvements 4,934    
Buildings and improvements 63,812    
Total 68,746    
Accumulated depreciation $ (13,274)    
Date of construction 2016    
Date acquired Jan-20    
Rental properties:      
Balance at the end of year $ 68,746    
Accumulated depreciation:      
Balance at the end of year $ 13,274    
Unencumbered Apartment Communities | Agora | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Agora | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Alessio      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 624    
Initial cost      
Land $ 32,136    
Buildings and improvements 128,543    
Costs capitalized subsequent to acquisition 28,316    
Gross amount carried at close of period      
Land and improvements 32,136    
Buildings and improvements 156,859    
Total 188,995    
Accumulated depreciation $ (71,301)    
Date of construction 2001    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 188,995    
Accumulated depreciation:      
Balance at the end of year $ 71,301    
Unencumbered Apartment Communities | Alessio | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Alessio | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Allegro      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 97    
Initial cost      
Land $ 5,869    
Buildings and improvements 23,977    
Costs capitalized subsequent to acquisition 4,543    
Gross amount carried at close of period      
Land and improvements 5,869    
Buildings and improvements 28,520    
Total 34,389    
Accumulated depreciation $ (16,423)    
Date of construction 2010    
Date acquired Oct-10    
Rental properties:      
Balance at the end of year $ 34,389    
Accumulated depreciation:      
Balance at the end of year $ 16,423    
Unencumbered Apartment Communities | Allegro | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Allegro | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Allure at Scripps Ranch      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 194    
Initial cost      
Land $ 11,923    
Buildings and improvements 47,690    
Costs capitalized subsequent to acquisition 7,043    
Gross amount carried at close of period      
Land and improvements 11,923    
Buildings and improvements 54,733    
Total 66,656    
Accumulated depreciation $ (22,720)    
Date of construction 2002    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 66,656    
Accumulated depreciation:      
Balance at the end of year $ 22,720    
Unencumbered Apartment Communities | Allure at Scripps Ranch | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Allure at Scripps Ranch | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Alpine Village      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 301    
Initial cost      
Land $ 4,967    
Buildings and improvements 19,728    
Costs capitalized subsequent to acquisition 18,911    
Gross amount carried at close of period      
Land and improvements 4,982    
Buildings and improvements 38,624    
Total 43,606    
Accumulated depreciation $ (27,056)    
Date of construction 1971    
Date acquired Dec-02    
Rental properties:      
Balance at the end of year $ 43,606    
Accumulated depreciation:      
Balance at the end of year $ 27,056    
Unencumbered Apartment Communities | Alpine Village | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Alpine Village | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Annaliese      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 56    
Initial cost      
Land $ 4,727    
Buildings and improvements 14,229    
Costs capitalized subsequent to acquisition 1,365    
Gross amount carried at close of period      
Land and improvements 4,726    
Buildings and improvements 15,595    
Total 20,321    
Accumulated depreciation $ (7,121)    
Date of construction 2009    
Date acquired Jan-13    
Rental properties:      
Balance at the end of year $ 20,321    
Accumulated depreciation:      
Balance at the end of year $ 7,121    
Unencumbered Apartment Communities | Annaliese | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Annaliese | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Apex      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 367    
Initial cost      
Land $ 44,240    
Buildings and improvements 103,251    
Costs capitalized subsequent to acquisition 14,518    
Gross amount carried at close of period      
Land and improvements 44,240    
Buildings and improvements 117,769    
Total 162,009    
Accumulated depreciation $ (47,685)    
Date of construction 2014    
Date acquired Aug-14    
Rental properties:      
Balance at the end of year $ 162,009    
Accumulated depreciation:      
Balance at the end of year $ 47,685    
Unencumbered Apartment Communities | Apex | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Apex | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Aqua Marina Del Rey      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 500    
Initial cost      
Land $ 58,442    
Buildings and improvements 175,326    
Costs capitalized subsequent to acquisition 30,058    
Gross amount carried at close of period      
Land and improvements 58,442    
Buildings and improvements 205,384    
Total 263,826    
Accumulated depreciation $ (91,041)    
Date of construction 2001    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 263,826    
Accumulated depreciation:      
Balance at the end of year $ 91,041    
Unencumbered Apartment Communities | Aqua Marina Del Rey | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Aqua Marina Del Rey | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | ROEN Menlo Park      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 164    
Initial cost      
Land $ 19,918    
Buildings and improvements 80,377    
Costs capitalized subsequent to acquisition 778    
Gross amount carried at close of period      
Land and improvements 19,918    
Buildings and improvements 81,155    
Total 101,073    
Accumulated depreciation $ (4,709)    
Date of construction 2018    
Date acquired May-24    
Rental properties:      
Balance at the end of year $ 101,073    
Accumulated depreciation:      
Balance at the end of year $ 4,709    
Unencumbered Apartment Communities | ROEN Menlo Park | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | ROEN Menlo Park | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Artizan      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 241    
Initial cost      
Land $ 12,560    
Buildings and improvements 81,356    
Costs capitalized subsequent to acquisition 0    
Gross amount carried at close of period      
Land and improvements 12,560    
Buildings and improvements 81,356    
Total 93,916    
Accumulated depreciation $ (2,746)    
Date of construction 2022    
Date acquired Jan-25    
Rental properties:      
Balance at the end of year $ 93,916    
Accumulated depreciation:      
Balance at the end of year $ 2,746    
Unencumbered Apartment Communities | Ascent      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 90    
Initial cost      
Land $ 3,924    
Buildings and improvements 11,862    
Costs capitalized subsequent to acquisition 4,240    
Gross amount carried at close of period      
Land and improvements 3,924    
Buildings and improvements 16,102    
Total 20,026    
Accumulated depreciation $ (8,304)    
Date of construction 1988    
Date acquired Oct-12    
Rental properties:      
Balance at the end of year $ 20,026    
Accumulated depreciation:      
Balance at the end of year $ 8,304    
Unencumbered Apartment Communities | Ascent | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Ascent | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Ashton Sherman Village      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 264    
Initial cost      
Land $ 23,550    
Buildings and improvements 93,811    
Costs capitalized subsequent to acquisition 5,933    
Gross amount carried at close of period      
Land and improvements 23,550    
Buildings and improvements 99,744    
Total 123,294    
Accumulated depreciation $ (31,630)    
Date of construction 2014    
Date acquired Dec-16    
Rental properties:      
Balance at the end of year $ 123,294    
Accumulated depreciation:      
Balance at the end of year $ 31,630    
Unencumbered Apartment Communities | Ashton Sherman Village | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Ashton Sherman Village | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Avant      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 443    
Initial cost      
Land $ 32,379    
Buildings and improvements 137,940    
Costs capitalized subsequent to acquisition 14,138    
Gross amount carried at close of period      
Land and improvements 32,379    
Buildings and improvements 152,078    
Total 184,457    
Accumulated depreciation $ (54,402)    
Date of construction 2014    
Date acquired Jun-15    
Rental properties:      
Balance at the end of year $ 184,457    
Accumulated depreciation:      
Balance at the end of year $ 54,402    
Unencumbered Apartment Communities | Avant | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Avant | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Avenue 64      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 224    
Initial cost      
Land $ 27,235    
Buildings and improvements 64,403    
Costs capitalized subsequent to acquisition 19,769    
Gross amount carried at close of period      
Land and improvements 27,235    
Buildings and improvements 84,172    
Total 111,407    
Accumulated depreciation $ (34,930)    
Date of construction 2007    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 111,407    
Accumulated depreciation:      
Balance at the end of year $ 34,930    
Unencumbered Apartment Communities | Avenue 64 | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Avenue 64 | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Aviara      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 166    
Initial cost      
Land $ 0    
Buildings and improvements 49,813    
Costs capitalized subsequent to acquisition 3,874    
Gross amount carried at close of period      
Land and improvements 0    
Buildings and improvements 53,687    
Total 53,687    
Accumulated depreciation $ (23,265)    
Date of construction 2013    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 53,687    
Accumulated depreciation:      
Balance at the end of year $ 23,265    
Unencumbered Apartment Communities | Aviara | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Aviara | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Avondale at Warner Center      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 446    
Initial cost      
Land $ 10,536    
Buildings and improvements 24,522    
Costs capitalized subsequent to acquisition 36,827    
Gross amount carried at close of period      
Land and improvements 10,601    
Buildings and improvements 61,284    
Total 71,885    
Accumulated depreciation $ (49,756)    
Date of construction 1970    
Date acquired Jan-99    
Rental properties:      
Balance at the end of year $ 71,885    
Accumulated depreciation:      
Balance at the end of year $ 49,756    
Unencumbered Apartment Communities | Avondale at Warner Center | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Avondale at Warner Center | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Beaumont      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 344    
Initial cost      
Land $ 22,101    
Buildings and improvements 113,737    
Costs capitalized subsequent to acquisition 1,200    
Gross amount carried at close of period      
Land and improvements 22,101    
Buildings and improvements 114,937    
Total 137,038    
Accumulated depreciation $ (4,221)    
Date of construction 2009    
Date acquired Nov-24    
Rental properties:      
Balance at the end of year $ 137,038    
Accumulated depreciation:      
Balance at the end of year $ 4,221    
Unencumbered Apartment Communities | Beaumont | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Beaumont | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Bel Air      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 462    
Initial cost      
Land $ 12,105    
Buildings and improvements 18,252    
Costs capitalized subsequent to acquisition 54,136    
Gross amount carried at close of period      
Land and improvements 12,682    
Buildings and improvements 71,811    
Total 84,493    
Accumulated depreciation $ (60,381)    
Date of construction 1988    
Date acquired Jan-95    
Rental properties:      
Balance at the end of year $ 84,493    
Accumulated depreciation:      
Balance at the end of year $ 60,381    
Unencumbered Apartment Communities | Bel Air | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Bel Air | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Belcarra      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 296    
Initial cost      
Land $ 21,725    
Buildings and improvements 92,091    
Costs capitalized subsequent to acquisition 9,120    
Gross amount carried at close of period      
Land and improvements 21,725    
Buildings and improvements 101,211    
Total 122,936    
Accumulated depreciation $ (42,200)    
Date of construction 2009    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 122,936    
Accumulated depreciation:      
Balance at the end of year $ 42,200    
Unencumbered Apartment Communities | Belcarra | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Belcarra | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Bella Villagio      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 231    
Initial cost      
Land $ 17,247    
Buildings and improvements 40,343    
Costs capitalized subsequent to acquisition 12,577    
Gross amount carried at close of period      
Land and improvements 17,247    
Buildings and improvements 52,920    
Total 70,167    
Accumulated depreciation $ (27,614)    
Date of construction 2004    
Date acquired Sep-10    
Rental properties:      
Balance at the end of year $ 70,167    
Accumulated depreciation:      
Balance at the end of year $ 27,614    
Unencumbered Apartment Communities | Bella Villagio | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Bella Villagio | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | BellCentre      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 249    
Initial cost      
Land $ 16,197    
Buildings and improvements 67,207    
Costs capitalized subsequent to acquisition 8,749    
Gross amount carried at close of period      
Land and improvements 16,197    
Buildings and improvements 75,956    
Total 92,153    
Accumulated depreciation $ (33,591)    
Date of construction 2001    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 92,153    
Accumulated depreciation:      
Balance at the end of year $ 33,591    
Unencumbered Apartment Communities | BellCentre | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | BellCentre | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Bellerive      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 63    
Initial cost      
Land $ 5,401    
Buildings and improvements 21,803    
Costs capitalized subsequent to acquisition 2,272    
Gross amount carried at close of period      
Land and improvements 5,401    
Buildings and improvements 24,075    
Total 29,476    
Accumulated depreciation $ (12,649)    
Date of construction 2011    
Date acquired Aug-11    
Rental properties:      
Balance at the end of year $ 29,476    
Accumulated depreciation:      
Balance at the end of year $ 12,649    
Unencumbered Apartment Communities | Bellerive | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Bellerive | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Belmont Terrace      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 71    
Initial cost      
Land $ 4,446    
Buildings and improvements 10,290    
Costs capitalized subsequent to acquisition 9,433    
Gross amount carried at close of period      
Land and improvements 4,473    
Buildings and improvements 19,696    
Total 24,169    
Accumulated depreciation $ (14,459)    
Date of construction 1974    
Date acquired Oct-06    
Rental properties:      
Balance at the end of year $ 24,169    
Accumulated depreciation:      
Balance at the end of year $ 14,459    
Unencumbered Apartment Communities | Belmont Terrace | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Belmont Terrace | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Bennett Lofts      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 178    
Initial cost      
Land $ 21,771    
Buildings and improvements 50,800    
Costs capitalized subsequent to acquisition 36,359    
Gross amount carried at close of period      
Land and improvements 28,371    
Buildings and improvements 80,559    
Total 108,930    
Accumulated depreciation $ (40,548)    
Date of construction 2004    
Date acquired Dec-12    
Rental properties:      
Balance at the end of year $ 108,930    
Accumulated depreciation:      
Balance at the end of year $ 40,548    
Unencumbered Apartment Communities | Bennett Lofts | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Bennett Lofts | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Bernardo Crest      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 218    
Initial cost      
Land $ 10,802    
Buildings and improvements 43,209    
Costs capitalized subsequent to acquisition 11,183    
Gross amount carried at close of period      
Land and improvements 10,802    
Buildings and improvements 54,392    
Total 65,194    
Accumulated depreciation $ (24,327)    
Date of construction 1988    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 65,194    
Accumulated depreciation:      
Balance at the end of year $ 24,327    
Unencumbered Apartment Communities | Bernardo Crest | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Bernardo Crest | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Bonita Cedars      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 120    
Initial cost      
Land $ 2,496    
Buildings and improvements 9,913    
Costs capitalized subsequent to acquisition 9,062    
Gross amount carried at close of period      
Land and improvements 2,503    
Buildings and improvements 18,968    
Total 21,471    
Accumulated depreciation $ (14,016)    
Date of construction 1983    
Date acquired Dec-02    
Rental properties:      
Balance at the end of year $ 21,471    
Accumulated depreciation:      
Balance at the end of year $ 14,016    
Unencumbered Apartment Communities | Bonita Cedars | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Bonita Cedars | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Bothell Ridge      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 214    
Initial cost      
Land $ 7,440    
Buildings and improvements 48,321    
Costs capitalized subsequent to acquisition 3,176    
Gross amount carried at close of period      
Land and improvements 7,440    
Buildings and improvements 51,497    
Total 58,937    
Accumulated depreciation $ (3,323)    
Date of construction 1988    
Date acquired Mar-24    
Rental properties:      
Balance at the end of year $ 58,937    
Accumulated depreciation:      
Balance at the end of year $ 3,323    
Unencumbered Apartment Communities | Bothell Ridge | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Bothell Ridge | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Boulevard      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 172    
Initial cost      
Land $ 3,520    
Buildings and improvements 8,182    
Costs capitalized subsequent to acquisition 18,054    
Gross amount carried at close of period      
Land and improvements 3,580    
Buildings and improvements 26,176    
Total 29,756    
Accumulated depreciation $ (23,476)    
Date of construction 1978    
Date acquired Jan-96    
Rental properties:      
Balance at the end of year $ 29,756    
Accumulated depreciation:      
Balance at the end of year $ 23,476    
Unencumbered Apartment Communities | Boulevard | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Boulevard | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Brookside Oaks      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 170    
Initial cost      
Land $ 7,301    
Buildings and improvements 16,310    
Costs capitalized subsequent to acquisition 30,763    
Gross amount carried at close of period      
Land and improvements 10,328    
Buildings and improvements 44,046    
Total 54,374    
Accumulated depreciation $ (34,764)    
Date of construction 1973    
Date acquired Jun-00    
Rental properties:      
Balance at the end of year $ 54,374    
Accumulated depreciation:      
Balance at the end of year $ 34,764    
Unencumbered Apartment Communities | Bridle Trails      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 108    
Initial cost      
Land $ 1,500    
Buildings and improvements 5,930    
Costs capitalized subsequent to acquisition 8,218    
Gross amount carried at close of period      
Land and improvements 1,531    
Buildings and improvements 14,117    
Total 15,648    
Accumulated depreciation $ (12,002)    
Date of construction 1986    
Date acquired Oct-97    
Rental properties:      
Balance at the end of year $ 15,648    
Accumulated depreciation:      
Balance at the end of year $ 12,002    
Unencumbered Apartment Communities | Bridle Trails | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Bridle Trails | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Bridgeport      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 184    
Initial cost      
Land $ 11,825    
Buildings and improvements 52,268    
Costs capitalized subsequent to acquisition 507    
Gross amount carried at close of period      
Land and improvements 11,825    
Buildings and improvements 52,775    
Total 64,600    
Accumulated depreciation $ (2,257)    
Date of construction 1987    
Date acquired Oct-24    
Rental properties:      
Balance at the end of year $ 64,600    
Accumulated depreciation:      
Balance at the end of year $ 2,257    
Unencumbered Apartment Communities | Brighton Ridge      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 264    
Initial cost      
Land $ 2,623    
Buildings and improvements 10,800    
Costs capitalized subsequent to acquisition 12,886    
Gross amount carried at close of period      
Land and improvements 2,656    
Buildings and improvements 23,653    
Total 26,309    
Accumulated depreciation $ (19,098)    
Date of construction 1986    
Date acquired Dec-96    
Rental properties:      
Balance at the end of year $ 26,309    
Accumulated depreciation:      
Balance at the end of year $ 19,098    
Unencumbered Apartment Communities | Brighton Ridge | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Brighton Ridge | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Bristol Commons      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 188    
Initial cost      
Land $ 5,278    
Buildings and improvements 11,853    
Costs capitalized subsequent to acquisition 13,548    
Gross amount carried at close of period      
Land and improvements 5,293    
Buildings and improvements 25,386    
Total 30,679    
Accumulated depreciation $ (22,492)    
Date of construction 1989    
Date acquired Jan-95    
Rental properties:      
Balance at the end of year $ 30,679    
Accumulated depreciation:      
Balance at the end of year $ 22,492    
Unencumbered Apartment Communities | Bristol Commons | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Bristol Commons | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Camarillo Oaks      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 564    
Initial cost      
Land $ 10,953    
Buildings and improvements 25,254    
Costs capitalized subsequent to acquisition 14,334    
Gross amount carried at close of period      
Land and improvements 11,075    
Buildings and improvements 39,466    
Total 50,541    
Accumulated depreciation $ (34,938)    
Date of construction 1985    
Date acquired Jul-96    
Rental properties:      
Balance at the end of year $ 50,541    
Accumulated depreciation:      
Balance at the end of year $ 34,938    
Unencumbered Apartment Communities | Camarillo Oaks | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Camarillo Oaks | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Cambridge Park      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 320    
Initial cost      
Land $ 18,185    
Buildings and improvements 72,739    
Costs capitalized subsequent to acquisition 9,555    
Gross amount carried at close of period      
Land and improvements 18,185    
Buildings and improvements 82,294    
Total 100,479    
Accumulated depreciation $ (35,042)    
Date of construction 1998    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 100,479    
Accumulated depreciation:      
Balance at the end of year $ 35,042    
Unencumbered Apartment Communities | Cambridge Park | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Cambridge Park | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Camino Ruiz Square      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 160    
Initial cost      
Land $ 6,871    
Buildings and improvements 26,119    
Costs capitalized subsequent to acquisition 4,427    
Gross amount carried at close of period      
Land and improvements 6,931    
Buildings and improvements 30,486    
Total 37,417    
Accumulated depreciation $ (19,561)    
Date of construction 1990    
Date acquired Dec-06    
Rental properties:      
Balance at the end of year $ 37,417    
Accumulated depreciation:      
Balance at the end of year $ 19,561    
Unencumbered Apartment Communities | Camino Ruiz Square | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Camino Ruiz Square | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Canvas      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 123    
Initial cost      
Land $ 10,489    
Buildings and improvements 36,924    
Costs capitalized subsequent to acquisition 1,913    
Gross amount carried at close of period      
Land and improvements 10,489    
Buildings and improvements 38,837    
Total 49,326    
Accumulated depreciation $ (5,773)    
Date of construction 2014    
Date acquired Dec-21    
Rental properties:      
Balance at the end of year $ 49,326    
Accumulated depreciation:      
Balance at the end of year $ 5,773    
Unencumbered Apartment Communities | Canvas | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Canvas | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Canyon Oaks      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 250    
Initial cost      
Land $ 19,088    
Buildings and improvements 44,473    
Costs capitalized subsequent to acquisition 15,441    
Gross amount carried at close of period      
Land and improvements 19,088    
Buildings and improvements 59,914    
Total 79,002    
Accumulated depreciation $ (35,642)    
Date of construction 2005    
Date acquired May-07    
Rental properties:      
Balance at the end of year $ 79,002    
Accumulated depreciation:      
Balance at the end of year $ 35,642    
Unencumbered Apartment Communities | Canyon Oaks | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Canyon Oaks | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Canyon Pointe      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 250    
Initial cost      
Land $ 4,692    
Buildings and improvements 18,288    
Costs capitalized subsequent to acquisition 13,218    
Gross amount carried at close of period      
Land and improvements 4,693    
Buildings and improvements 31,505    
Total 36,198    
Accumulated depreciation $ (23,951)    
Date of construction 1990    
Date acquired Oct-03    
Rental properties:      
Balance at the end of year $ 36,198    
Accumulated depreciation:      
Balance at the end of year $ 23,951    
Unencumbered Apartment Communities | Canyon Pointe | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Canyon Pointe | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Capri at Sunny Hills      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 102    
Initial cost      
Land $ 3,337    
Buildings and improvements 13,320    
Costs capitalized subsequent to acquisition 13,897    
Gross amount carried at close of period      
Land and improvements 4,048    
Buildings and improvements 26,506    
Total 30,554    
Accumulated depreciation $ (20,441)    
Date of construction 1961    
Date acquired Sep-01    
Rental properties:      
Balance at the end of year $ 30,554    
Accumulated depreciation:      
Balance at the end of year $ 20,441    
Unencumbered Apartment Communities | Capri at Sunny Hills | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Capri at Sunny Hills | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Carmel Creek      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 348    
Initial cost      
Land $ 26,842    
Buildings and improvements 107,368    
Costs capitalized subsequent to acquisition 16,563    
Gross amount carried at close of period      
Land and improvements 26,842    
Buildings and improvements 123,931    
Total 150,773    
Accumulated depreciation $ (52,929)    
Date of construction 2000    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 150,773    
Accumulated depreciation:      
Balance at the end of year $ 52,929    
Unencumbered Apartment Communities | Carmel Creek | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Carmel Creek | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Carmel Landing      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 356    
Initial cost      
Land $ 16,725    
Buildings and improvements 66,901    
Costs capitalized subsequent to acquisition 21,464    
Gross amount carried at close of period      
Land and improvements 16,725    
Buildings and improvements 88,365    
Total 105,090    
Accumulated depreciation $ (40,328)    
Date of construction 1989    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 105,090    
Accumulated depreciation:      
Balance at the end of year $ 40,328    
Unencumbered Apartment Communities | Carmel Landing | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Carmel Landing | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Carmel Summit      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 248    
Initial cost      
Land $ 14,968    
Buildings and improvements 59,871    
Costs capitalized subsequent to acquisition 12,291    
Gross amount carried at close of period      
Land and improvements 14,968    
Buildings and improvements 72,162    
Total 87,130    
Accumulated depreciation $ (31,030)    
Date of construction 1989    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 87,130    
Accumulated depreciation:      
Balance at the end of year $ 31,030    
Unencumbered Apartment Communities | Carmel Summit | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Carmel Summit | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Castle Creek      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 216    
Initial cost      
Land $ 4,149    
Buildings and improvements 16,028    
Costs capitalized subsequent to acquisition 9,075    
Gross amount carried at close of period      
Land and improvements 4,833    
Buildings and improvements 24,419    
Total 29,252    
Accumulated depreciation $ (22,039)    
Date of construction 1998    
Date acquired Dec-98    
Rental properties:      
Balance at the end of year $ 29,252    
Accumulated depreciation:      
Balance at the end of year $ 22,039    
Unencumbered Apartment Communities | Castle Creek | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Castle Creek | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Catalina Gardens      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 128    
Initial cost      
Land $ 6,714    
Buildings and improvements 26,856    
Costs capitalized subsequent to acquisition 5,639    
Gross amount carried at close of period      
Land and improvements 6,714    
Buildings and improvements 32,495    
Total 39,209    
Accumulated depreciation $ (14,064)    
Date of construction 1987    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 39,209    
Accumulated depreciation:      
Balance at the end of year $ 14,064    
Unencumbered Apartment Communities | Catalina Gardens | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Catalina Gardens | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Cedar Terrace      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 180    
Initial cost      
Land $ 5,543    
Buildings and improvements 16,442    
Costs capitalized subsequent to acquisition 12,412    
Gross amount carried at close of period      
Land and improvements 5,652    
Buildings and improvements 28,745    
Total 34,397    
Accumulated depreciation $ (20,784)    
Date of construction 1984    
Date acquired Jan-05    
Rental properties:      
Balance at the end of year $ 34,397    
Accumulated depreciation:      
Balance at the end of year $ 20,784    
Unencumbered Apartment Communities | Cedar Terrace | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Cedar Terrace | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | CentrePointe      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 224    
Initial cost      
Land $ 3,405    
Buildings and improvements 7,743    
Costs capitalized subsequent to acquisition 26,010    
Gross amount carried at close of period      
Land and improvements 3,442    
Buildings and improvements 33,716    
Total 37,158    
Accumulated depreciation $ (28,633)    
Date of construction 1974    
Date acquired Jun-97    
Rental properties:      
Balance at the end of year $ 37,158    
Accumulated depreciation:      
Balance at the end of year $ 28,633    
Unencumbered Apartment Communities | CentrePointe | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | CentrePointe | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Parc at Pruneyard      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 376    
Initial cost      
Land $ 14,865    
Buildings and improvements 157,787    
Costs capitalized subsequent to acquisition 1,618    
Gross amount carried at close of period      
Land and improvements 14,865    
Buildings and improvements 159,405    
Total 174,270    
Accumulated depreciation $ (7,235)    
Date of construction 2017    
Date acquired Sep-24    
Rental properties:      
Balance at the end of year $ 174,270    
Accumulated depreciation:      
Balance at the end of year $ 7,235    
Unencumbered Apartment Communities | The Parc at Pruneyard | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Parc at Pruneyard | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Chestnut Street      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 96    
Initial cost      
Land $ 6,582    
Buildings and improvements 15,689    
Costs capitalized subsequent to acquisition 4,485    
Gross amount carried at close of period      
Land and improvements 6,582    
Buildings and improvements 20,174    
Total 26,756    
Accumulated depreciation $ (11,677)    
Date of construction 2002    
Date acquired Jul-08    
Rental properties:      
Balance at the end of year $ 26,756    
Accumulated depreciation:      
Balance at the end of year $ 11,677    
Unencumbered Apartment Communities | Chestnut Street | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Chestnut Street | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | City View      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 572    
Initial cost      
Land $ 9,883    
Buildings and improvements 37,670    
Costs capitalized subsequent to acquisition 46,307    
Gross amount carried at close of period      
Land and improvements 10,350    
Buildings and improvements 83,510    
Total 93,860    
Accumulated depreciation $ (71,224)    
Date of construction 1975    
Date acquired Mar-98    
Rental properties:      
Balance at the end of year $ 93,860    
Accumulated depreciation:      
Balance at the end of year $ 71,224    
Unencumbered Apartment Communities | Collins on Pine      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 76    
Initial cost      
Land $ 7,276    
Buildings and improvements 22,226    
Costs capitalized subsequent to acquisition 1,526    
Gross amount carried at close of period      
Land and improvements 7,276    
Buildings and improvements 23,752    
Total 31,028    
Accumulated depreciation $ (9,510)    
Date of construction 2013    
Date acquired May-14    
Rental properties:      
Balance at the end of year $ 31,028    
Accumulated depreciation:      
Balance at the end of year $ 9,510    
Unencumbered Apartment Communities | Collins on Pine | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Collins on Pine | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Connolly Station      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 309    
Initial cost      
Land $ 19,949    
Buildings and improvements 123,428    
Costs capitalized subsequent to acquisition 6,284    
Gross amount carried at close of period      
Land and improvements 19,949    
Buildings and improvements 129,712    
Total 149,661    
Accumulated depreciation $ (29,007)    
Date of construction 2014    
Date acquired Jan-20    
Rental properties:      
Balance at the end of year $ 149,661    
Accumulated depreciation:      
Balance at the end of year $ 29,007    
Unencumbered Apartment Communities | Connolly Station | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Connolly Station | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Corbella at Juanita Bay      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 169    
Initial cost      
Land $ 5,801    
Buildings and improvements 17,415    
Costs capitalized subsequent to acquisition 7,255    
Gross amount carried at close of period      
Land and improvements 5,801    
Buildings and improvements 24,670    
Total 30,471    
Accumulated depreciation $ (13,648)    
Date of construction 1978    
Date acquired Nov-10    
Rental properties:      
Balance at the end of year $ 30,471    
Accumulated depreciation:      
Balance at the end of year $ 13,648    
Unencumbered Apartment Communities | Corbella at Juanita Bay | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Corbella at Juanita Bay | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Cortesia      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 308    
Initial cost      
Land $ 13,912    
Buildings and improvements 55,649    
Costs capitalized subsequent to acquisition 8,526    
Gross amount carried at close of period      
Land and improvements 13,912    
Buildings and improvements 64,175    
Total 78,087    
Accumulated depreciation $ (27,089)    
Date of construction 1999    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 78,087    
Accumulated depreciation:      
Balance at the end of year $ 27,089    
Unencumbered Apartment Communities | Cortesia | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Cortesia | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Country Villas      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 180    
Initial cost      
Land $ 4,174    
Buildings and improvements 16,583    
Costs capitalized subsequent to acquisition 9,832    
Gross amount carried at close of period      
Land and improvements 4,187    
Buildings and improvements 26,402    
Total 30,589    
Accumulated depreciation $ (19,405)    
Date of construction 1976    
Date acquired Dec-02    
Rental properties:      
Balance at the end of year $ 30,589    
Accumulated depreciation:      
Balance at the end of year $ 19,405    
Unencumbered Apartment Communities | Country Villas | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Country Villas | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Courtyard off Main      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 110    
Initial cost      
Land $ 7,465    
Buildings and improvements 21,405    
Costs capitalized subsequent to acquisition 9,518    
Gross amount carried at close of period      
Land and improvements 7,465    
Buildings and improvements 30,923    
Total 38,388    
Accumulated depreciation $ (16,857)    
Date of construction 2000    
Date acquired Oct-10    
Rental properties:      
Balance at the end of year $ 38,388    
Accumulated depreciation:      
Balance at the end of year $ 16,857    
Unencumbered Apartment Communities | Courtyard off Main | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Courtyard off Main | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Crow Canyon      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 400    
Initial cost      
Land $ 37,579    
Buildings and improvements 87,685    
Costs capitalized subsequent to acquisition 21,737    
Gross amount carried at close of period      
Land and improvements 37,579    
Buildings and improvements 109,422    
Total 147,001    
Accumulated depreciation $ (51,114)    
Date of construction 1992    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 147,001    
Accumulated depreciation:      
Balance at the end of year $ 51,114    
Unencumbered Apartment Communities | Crow Canyon | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Crow Canyon | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Deer Valley      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 171    
Initial cost      
Land $ 21,478    
Buildings and improvements 50,116    
Costs capitalized subsequent to acquisition 7,450    
Gross amount carried at close of period      
Land and improvements 21,478    
Buildings and improvements 57,566    
Total 79,044    
Accumulated depreciation $ (25,183)    
Date of construction 1996    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 79,044    
Accumulated depreciation:      
Balance at the end of year $ 25,183    
Unencumbered Apartment Communities | Deer Valley | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Deer Valley | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Domaine      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 92    
Initial cost      
Land $ 9,059    
Buildings and improvements 27,177    
Costs capitalized subsequent to acquisition 2,241    
Gross amount carried at close of period      
Land and improvements 9,059    
Buildings and improvements 29,418    
Total 38,477    
Accumulated depreciation $ (13,730)    
Date of construction 2009    
Date acquired Sep-12    
Rental properties:      
Balance at the end of year $ 38,477    
Accumulated depreciation:      
Balance at the end of year $ 13,730    
Unencumbered Apartment Communities | Elevation      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 158    
Initial cost      
Land $ 4,758    
Buildings and improvements 14,285    
Costs capitalized subsequent to acquisition 9,530    
Gross amount carried at close of period      
Land and improvements 4,757    
Buildings and improvements 23,816    
Total 28,573    
Accumulated depreciation $ (15,410)    
Date of construction 1986    
Date acquired Jun-10    
Rental properties:      
Balance at the end of year $ 28,573    
Accumulated depreciation:      
Balance at the end of year $ 15,410    
Unencumbered Apartment Communities | Elevation | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Elevation | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Ellington      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 220    
Initial cost      
Land $ 15,066    
Buildings and improvements 45,249    
Costs capitalized subsequent to acquisition 8,505    
Gross amount carried at close of period      
Land and improvements 15,066    
Buildings and improvements 53,754    
Total 68,820    
Accumulated depreciation $ (22,695)    
Date of construction 1994    
Date acquired Jul-14    
Rental properties:      
Balance at the end of year $ 68,820    
Accumulated depreciation:      
Balance at the end of year $ 22,695    
Unencumbered Apartment Communities | Ellington | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Ellington | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Emerald Pointe      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 160    
Initial cost      
Land $ 8,458    
Buildings and improvements 33,832    
Costs capitalized subsequent to acquisition 4,692    
Gross amount carried at close of period      
Land and improvements 8,458    
Buildings and improvements 38,524    
Total 46,982    
Accumulated depreciation $ (16,726)    
Date of construction 1989    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 46,982    
Accumulated depreciation:      
Balance at the end of year $ 16,726    
Unencumbered Apartment Communities | Emerald Pointe | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Emerald Pointe | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Emerald Ridge      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 180    
Initial cost      
Land $ 3,449    
Buildings and improvements 7,801    
Costs capitalized subsequent to acquisition 9,895    
Gross amount carried at close of period      
Land and improvements 3,449    
Buildings and improvements 17,696    
Total 21,145    
Accumulated depreciation $ (15,747)    
Date of construction 1987    
Date acquired Nov-94    
Rental properties:      
Balance at the end of year $ 21,145    
Accumulated depreciation:      
Balance at the end of year $ 15,747    
Unencumbered Apartment Communities | Emerald Ridge | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Emerald Ridge | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Emerson Valley Village      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 144    
Initial cost      
Land $ 13,378    
Buildings and improvements 53,240    
Costs capitalized subsequent to acquisition 3,597    
Gross amount carried at close of period      
Land and improvements 13,378    
Buildings and improvements 56,837    
Total 70,215    
Accumulated depreciation $ (18,418)    
Date of construction 2012    
Date acquired Dec-16    
Rental properties:      
Balance at the end of year $ 70,215    
Accumulated depreciation:      
Balance at the end of year $ 18,418    
Unencumbered Apartment Communities | Emerson Valley Village | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Emerson Valley Village | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Emme      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 190    
Initial cost      
Land $ 15,039    
Buildings and improvements 80,532    
Costs capitalized subsequent to acquisition 2,645    
Gross amount carried at close of period      
Land and improvements 15,039    
Buildings and improvements 83,177    
Total 98,216    
Accumulated depreciation $ (17,866)    
Date of construction 2015    
Date acquired Jan-20    
Rental properties:      
Balance at the end of year $ 98,216    
Accumulated depreciation:      
Balance at the end of year $ 17,866    
Unencumbered Apartment Communities | Emme | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Emme | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Enso      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 183    
Initial cost      
Land $ 21,397    
Buildings and improvements 71,135    
Costs capitalized subsequent to acquisition 6,522    
Gross amount carried at close of period      
Land and improvements 21,397    
Buildings and improvements 77,657    
Total 99,054    
Accumulated depreciation $ (27,012)    
Date of construction 2014    
Date acquired Dec-15    
Rental properties:      
Balance at the end of year $ 99,054    
Accumulated depreciation:      
Balance at the end of year $ 27,012    
Unencumbered Apartment Communities | Enso | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Enso | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Epic      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 769    
Initial cost      
Land $ 89,111    
Buildings and improvements 307,769    
Costs capitalized subsequent to acquisition 8,982    
Gross amount carried at close of period      
Land and improvements 89,111    
Buildings and improvements 316,751    
Total 405,862    
Accumulated depreciation $ (66,730)    
Date of construction 2013    
Date acquired Jan-20    
Rental properties:      
Balance at the end of year $ 405,862    
Accumulated depreciation:      
Balance at the end of year $ 66,730    
Unencumbered Apartment Communities | Epic | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Epic | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Esplanade      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 278    
Initial cost      
Land $ 18,170    
Buildings and improvements 40,086    
Costs capitalized subsequent to acquisition 20,864    
Gross amount carried at close of period      
Land and improvements 18,429    
Buildings and improvements 60,691    
Total 79,120    
Accumulated depreciation $ (45,294)    
Date of construction 2002    
Date acquired Apr-04    
Rental properties:      
Balance at the end of year $ 79,120    
Accumulated depreciation:      
Balance at the end of year $ 45,294    
Unencumbered Apartment Communities | Esplanade | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Esplanade | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Esplanade San Diego      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 614    
Initial cost      
Land $ 56,327    
Buildings and improvements 167,072    
Costs capitalized subsequent to acquisition 4,852    
Gross amount carried at close of period      
Land and improvements 56,327    
Buildings and improvements 171,924    
Total 228,251    
Accumulated depreciation $ (10,755)    
Date of construction 1986    
Date acquired Mar-24    
Rental properties:      
Balance at the end of year $ 228,251    
Accumulated depreciation:      
Balance at the end of year $ 10,755    
Unencumbered Apartment Communities | Esplanade San Diego | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Esplanade San Diego | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Evergreen Heights      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 200    
Initial cost      
Land $ 3,566    
Buildings and improvements 13,395    
Costs capitalized subsequent to acquisition 10,976    
Gross amount carried at close of period      
Land and improvements 3,649    
Buildings and improvements 24,288    
Total 27,937    
Accumulated depreciation $ (21,022)    
Date of construction 1990    
Date acquired Jun-97    
Rental properties:      
Balance at the end of year $ 27,937    
Accumulated depreciation:      
Balance at the end of year $ 21,022    
Unencumbered Apartment Communities | Evergreen Heights | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Evergreen Heights | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Fairhaven      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 164    
Initial cost      
Land $ 2,626    
Buildings and improvements 10,485    
Costs capitalized subsequent to acquisition 13,885    
Gross amount carried at close of period      
Land and improvements 2,957    
Buildings and improvements 24,039    
Total 26,996    
Accumulated depreciation $ (18,760)    
Date of construction 1970    
Date acquired Nov-01    
Rental properties:      
Balance at the end of year $ 26,996    
Accumulated depreciation:      
Balance at the end of year $ 18,760    
Unencumbered Apartment Communities | Fairway at Big Canyon      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 74    
Initial cost      
Land $ 0    
Buildings and improvements 7,850    
Costs capitalized subsequent to acquisition 10,207    
Gross amount carried at close of period      
Land and improvements 0    
Buildings and improvements 18,057    
Total 18,057    
Accumulated depreciation $ (16,954)    
Date of construction 1972    
Date acquired Jun-99    
Rental properties:      
Balance at the end of year $ 18,057    
Accumulated depreciation:      
Balance at the end of year $ 16,954    
Unencumbered Apartment Communities | Fairway at Big Canyon | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Fairway at Big Canyon | Maximum      
Gross amount carried at close of period      
Life used for depreciation 28 years    
Unencumbered Apartment Communities | Fairwood Pond      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 194    
Initial cost      
Land $ 5,296    
Buildings and improvements 15,564    
Costs capitalized subsequent to acquisition 8,334    
Gross amount carried at close of period      
Land and improvements 5,297    
Buildings and improvements 23,897    
Total 29,194    
Accumulated depreciation $ (16,692)    
Date of construction 1997    
Date acquired Oct-04    
Rental properties:      
Balance at the end of year $ 29,194    
Accumulated depreciation:      
Balance at the end of year $ 16,692    
Unencumbered Apartment Communities | Fairwood Pond | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Fairwood Pond | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Foothill Commons      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 394    
Initial cost      
Land $ 2,435    
Buildings and improvements 9,821    
Costs capitalized subsequent to acquisition 46,499    
Gross amount carried at close of period      
Land and improvements 2,440    
Buildings and improvements 56,315    
Total 58,755    
Accumulated depreciation $ (52,928)    
Date of construction 1978    
Date acquired Mar-90    
Rental properties:      
Balance at the end of year $ 58,755    
Accumulated depreciation:      
Balance at the end of year $ 52,928    
Unencumbered Apartment Communities | Foothill Commons | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Foothill Commons | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Foothill Gardens/Twin Creeks      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 176    
Initial cost      
Land $ 5,875    
Buildings and improvements 13,992    
Costs capitalized subsequent to acquisition 17,675    
Gross amount carried at close of period      
Land and improvements 5,964    
Buildings and improvements 31,578    
Total 37,542    
Accumulated depreciation $ (26,673)    
Date of construction 1985    
Date acquired Feb-97    
Rental properties:      
Balance at the end of year $ 37,542    
Accumulated depreciation:      
Balance at the end of year $ 26,673    
Unencumbered Apartment Communities | Foothill Gardens/Twin Creeks | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Foothill Gardens/Twin Creeks | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Forest View      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 192    
Initial cost      
Land $ 3,731    
Buildings and improvements 14,530    
Costs capitalized subsequent to acquisition 6,412    
Gross amount carried at close of period      
Land and improvements 3,731    
Buildings and improvements 20,942    
Total 24,673    
Accumulated depreciation $ (15,232)    
Date of construction 1998    
Date acquired Oct-03    
Rental properties:      
Balance at the end of year $ 24,673    
Accumulated depreciation:      
Balance at the end of year $ 15,232    
Unencumbered Apartment Communities | Forest View | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Forest View | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Form 15      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 242    
Initial cost      
Land $ 24,510    
Buildings and improvements 72,221    
Costs capitalized subsequent to acquisition 16,535    
Gross amount carried at close of period      
Land and improvements 25,540    
Buildings and improvements 87,726    
Total 113,266    
Accumulated depreciation $ (31,683)    
Date of construction 2014    
Date acquired Mar-16    
Rental properties:      
Balance at the end of year $ 113,266    
Accumulated depreciation:      
Balance at the end of year $ 31,683    
Unencumbered Apartment Communities | Foster’s Landing      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 490    
Initial cost      
Land $ 61,714    
Buildings and improvements 144,000    
Costs capitalized subsequent to acquisition 22,272    
Gross amount carried at close of period      
Land and improvements 61,714    
Buildings and improvements 166,272    
Total 227,986    
Accumulated depreciation $ (73,329)    
Date of construction 1987    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 227,986    
Accumulated depreciation:      
Balance at the end of year $ 73,329    
Unencumbered Apartment Communities | Fountain Court      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 320    
Initial cost      
Land $ 6,702    
Buildings and improvements 27,306    
Costs capitalized subsequent to acquisition 17,933    
Gross amount carried at close of period      
Land and improvements 6,985    
Buildings and improvements 44,956    
Total 51,941    
Accumulated depreciation $ (38,560)    
Date of construction 2000    
Date acquired Mar-00    
Rental properties:      
Balance at the end of year $ 51,941    
Accumulated depreciation:      
Balance at the end of year $ 38,560    
Unencumbered Apartment Communities | Fountain Court | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Fountain Court | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Fountains at River Oaks      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 226    
Initial cost      
Land $ 26,046    
Buildings and improvements 60,773    
Costs capitalized subsequent to acquisition 10,138    
Gross amount carried at close of period      
Land and improvements 26,046    
Buildings and improvements 70,911    
Total 96,957    
Accumulated depreciation $ (31,886)    
Date of construction 1990    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 96,957    
Accumulated depreciation:      
Balance at the end of year $ 31,886    
Unencumbered Apartment Communities | Fountains at River Oaks | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Fountains at River Oaks | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Fox Plaza      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 445    
Initial cost      
Land $ 39,731    
Buildings and improvements 92,706    
Costs capitalized subsequent to acquisition 45,825    
Gross amount carried at close of period      
Land and improvements 39,731    
Buildings and improvements 138,531    
Total 178,262    
Accumulated depreciation $ (77,012)    
Date of construction 1968    
Date acquired Feb-13    
Rental properties:      
Balance at the end of year $ 178,262    
Accumulated depreciation:      
Balance at the end of year $ 77,012    
Unencumbered Apartment Communities | Fox Plaza | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Fox Plaza | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Hacienda at Camarillo Oaks      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 73    
Initial cost      
Land $ 5,497    
Buildings and improvements 17,572    
Costs capitalized subsequent to acquisition 3,779    
Gross amount carried at close of period      
Land and improvements 5,497    
Buildings and improvements 21,351    
Total 26,848    
Accumulated depreciation $ (2,597)    
Date of construction 1984    
Date acquired Apr-23    
Rental properties:      
Balance at the end of year $ 26,848    
Accumulated depreciation:      
Balance at the end of year $ 2,597    
Unencumbered Apartment Communities | Hacienda at Camarillo Oaks | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Hacienda at Camarillo Oaks | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Henley I/The Henley II      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 215    
Initial cost      
Land $ 6,695    
Buildings and improvements 16,753    
Costs capitalized subsequent to acquisition 32,997    
Gross amount carried at close of period      
Land and improvements 6,733    
Buildings and improvements 49,712    
Total 56,445    
Accumulated depreciation $ (43,942)    
Date of construction 1970    
Date acquired Jun-99    
Rental properties:      
Balance at the end of year $ 56,445    
Accumulated depreciation:      
Balance at the end of year $ 43,942    
Unencumbered Apartment Communities | The Henley I/The Henley II | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Henley I/The Henley II | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Highlands at Wynhaven      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 333    
Initial cost      
Land $ 16,271    
Buildings and improvements 48,932    
Costs capitalized subsequent to acquisition 19,790    
Gross amount carried at close of period      
Land and improvements 16,271    
Buildings and improvements 68,722    
Total 84,993    
Accumulated depreciation $ (44,552)    
Date of construction 2000    
Date acquired Aug-08    
Rental properties:      
Balance at the end of year $ 84,993    
Accumulated depreciation:      
Balance at the end of year $ 44,552    
Unencumbered Apartment Communities | Highlands at Wynhaven | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Highlands at Wynhaven | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Hillcrest Park      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 608    
Initial cost      
Land $ 15,318    
Buildings and improvements 40,601    
Costs capitalized subsequent to acquisition 35,169    
Gross amount carried at close of period      
Land and improvements 15,755    
Buildings and improvements 75,333    
Total 91,088    
Accumulated depreciation $ (60,913)    
Date of construction 1973    
Date acquired Mar-98    
Rental properties:      
Balance at the end of year $ 91,088    
Accumulated depreciation:      
Balance at the end of year $ 60,913    
Unencumbered Apartment Communities | Hillcrest Park | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Hillcrest Park | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Hope Ranch      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 108    
Initial cost      
Land $ 4,078    
Buildings and improvements 16,877    
Costs capitalized subsequent to acquisition 4,583    
Gross amount carried at close of period      
Land and improvements 4,208    
Buildings and improvements 21,330    
Total 25,538    
Accumulated depreciation $ (13,483)    
Date of construction 1965    
Date acquired Mar-07    
Rental properties:      
Balance at the end of year $ 25,538    
Accumulated depreciation:      
Balance at the end of year $ 13,483    
Unencumbered Apartment Communities | Hope Ranch | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Hope Ranch | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Huntington Breakers      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 344    
Initial cost      
Land $ 9,306    
Buildings and improvements 22,720    
Costs capitalized subsequent to acquisition 27,729    
Gross amount carried at close of period      
Land and improvements 9,315    
Buildings and improvements 50,440    
Total 59,755    
Accumulated depreciation $ (45,360)    
Date of construction 1984    
Date acquired Oct-97    
Rental properties:      
Balance at the end of year $ 59,755    
Accumulated depreciation:      
Balance at the end of year $ 45,360    
Unencumbered Apartment Communities | Huntington Breakers | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Huntington Breakers | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Inglenook Court      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 224    
Initial cost      
Land $ 3,467    
Buildings and improvements 7,881    
Costs capitalized subsequent to acquisition 11,762    
Gross amount carried at close of period      
Land and improvements 3,474    
Buildings and improvements 19,636    
Total 23,110    
Accumulated depreciation $ (17,340)    
Date of construction 1985    
Date acquired Oct-94    
Rental properties:      
Balance at the end of year $ 23,110    
Accumulated depreciation:      
Balance at the end of year $ 17,340    
Unencumbered Apartment Communities | Inglenook Court | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Inglenook Court | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Lafayette Highlands      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 150    
Initial cost      
Land $ 17,774    
Buildings and improvements 41,473    
Costs capitalized subsequent to acquisition 17,905    
Gross amount carried at close of period      
Land and improvements 17,774    
Buildings and improvements 59,378    
Total 77,152    
Accumulated depreciation $ (24,214)    
Date of construction 1973    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 77,152    
Accumulated depreciation:      
Balance at the end of year $ 24,214    
Unencumbered Apartment Communities | Lafayette Highlands | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Lafayette Highlands | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Lakeshore Landing      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 308    
Initial cost      
Land $ 38,155    
Buildings and improvements 89,028    
Costs capitalized subsequent to acquisition 18,003    
Gross amount carried at close of period      
Land and improvements 38,155    
Buildings and improvements 107,031    
Total 145,186    
Accumulated depreciation $ (47,766)    
Date of construction 1988    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 145,186    
Accumulated depreciation:      
Balance at the end of year $ 47,766    
Unencumbered Apartment Communities | Lakeshore Landing | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Lakeshore Landing | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Laurels at Mill Creek      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 164    
Initial cost      
Land $ 1,559    
Buildings and improvements 6,430    
Costs capitalized subsequent to acquisition 10,583    
Gross amount carried at close of period      
Land and improvements 1,595    
Buildings and improvements 16,977    
Total 18,572    
Accumulated depreciation $ (14,844)    
Date of construction 1981    
Date acquired Dec-96    
Rental properties:      
Balance at the end of year $ 18,572    
Accumulated depreciation:      
Balance at the end of year $ 14,844    
Unencumbered Apartment Communities | Laurels at Mill Creek | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Laurels at Mill Creek | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Le Parc      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 140    
Initial cost      
Land $ 3,090    
Buildings and improvements 7,421    
Costs capitalized subsequent to acquisition 16,943    
Gross amount carried at close of period      
Land and improvements 3,092    
Buildings and improvements 24,362    
Total 27,454    
Accumulated depreciation $ (21,573)    
Date of construction 1975    
Date acquired Feb-94    
Rental properties:      
Balance at the end of year $ 27,454    
Accumulated depreciation:      
Balance at the end of year $ 21,573    
Unencumbered Apartment Communities | Le Parc | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Le Parc | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Marbrisa      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 202    
Initial cost      
Land $ 4,700    
Buildings and improvements 18,605    
Costs capitalized subsequent to acquisition 13,786    
Gross amount carried at close of period      
Land and improvements 4,760    
Buildings and improvements 32,331    
Total 37,091    
Accumulated depreciation $ (25,240)    
Date of construction 1987    
Date acquired Sep-02    
Rental properties:      
Balance at the end of year $ 37,091    
Accumulated depreciation:      
Balance at the end of year $ 25,240    
Unencumbered Apartment Communities | Marbrisa | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Marbrisa | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Marina City Club      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 101    
Initial cost      
Land $ 0    
Buildings and improvements 28,167    
Costs capitalized subsequent to acquisition 36,402    
Gross amount carried at close of period      
Land and improvements 0    
Buildings and improvements 64,569    
Total 64,569    
Accumulated depreciation $ (46,402)    
Date of construction 1971    
Date acquired Jan-04    
Rental properties:      
Balance at the end of year $ 64,569    
Accumulated depreciation:      
Balance at the end of year $ 46,402    
Unencumbered Apartment Communities | Marina City Club | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Marina City Club | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Marina Cove      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 292    
Initial cost      
Land $ 5,320    
Buildings and improvements 16,431    
Costs capitalized subsequent to acquisition 23,732    
Gross amount carried at close of period      
Land and improvements 5,324    
Buildings and improvements 40,159    
Total 45,483    
Accumulated depreciation $ (35,246)    
Date of construction 1974    
Date acquired Jun-94    
Rental properties:      
Balance at the end of year $ 45,483    
Accumulated depreciation:      
Balance at the end of year $ 35,246    
Unencumbered Apartment Communities | Marina Cove | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Marina Cove | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Mariner’s Place      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 106    
Initial cost      
Land $ 1,555    
Buildings and improvements 6,103    
Costs capitalized subsequent to acquisition 4,465    
Gross amount carried at close of period      
Land and improvements 1,562    
Buildings and improvements 10,561    
Total 12,123    
Accumulated depreciation $ (8,371)    
Date of construction 1987    
Date acquired May-00    
Rental properties:      
Balance at the end of year $ 12,123    
Accumulated depreciation:      
Balance at the end of year $ 8,371    
Unencumbered Apartment Communities | Mariner’s Place | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Mariner’s Place | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | One Hundred Grand      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 75    
Initial cost      
Land $ 9,710    
Buildings and improvements 37,292    
Costs capitalized subsequent to acquisition 454    
Gross amount carried at close of period      
Land and improvements 9,710    
Buildings and improvements 37,746    
Total 47,456    
Accumulated depreciation $ (2,295)    
Date of construction 2022    
Date acquired Apr-24    
Rental properties:      
Balance at the end of year $ 47,456    
Accumulated depreciation:      
Balance at the end of year $ 2,295    
Unencumbered Apartment Communities | One Hundred Grand | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | One Hundred Grand | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | MB 360      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 360    
Initial cost      
Land $ 42,001    
Buildings and improvements 212,648    
Costs capitalized subsequent to acquisition 24,659    
Gross amount carried at close of period      
Land and improvements 42,001    
Buildings and improvements 237,307    
Total 279,308    
Accumulated depreciation $ (89,142)    
Date of construction 2014    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 279,308    
Accumulated depreciation:      
Balance at the end of year $ 89,142    
Unencumbered Apartment Communities | MB 360 | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | MB 360 | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Meadowood      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 320    
Initial cost      
Land $ 19,080    
Buildings and improvements 98,881    
Costs capitalized subsequent to acquisition 1,750    
Gross amount carried at close of period      
Land and improvements 19,080    
Buildings and improvements 100,631    
Total 119,711    
Accumulated depreciation $ (4,324)    
Date of construction 1986    
Date acquired Oct-24    
Rental properties:      
Balance at the end of year $ 119,711    
Accumulated depreciation:      
Balance at the end of year $ 4,324    
Unencumbered Apartment Communities | Meadowood | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Meadowood | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Mesa Village      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 133    
Initial cost      
Land $ 1,888    
Buildings and improvements 7,498    
Costs capitalized subsequent to acquisition 3,927    
Gross amount carried at close of period      
Land and improvements 1,894    
Buildings and improvements 11,419    
Total 13,313    
Accumulated depreciation $ (8,819)    
Date of construction 1963    
Date acquired Dec-02    
Rental properties:      
Balance at the end of year $ 13,313    
Accumulated depreciation:      
Balance at the end of year $ 8,819    
Unencumbered Apartment Communities | Mesa Village | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Mesa Village | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Mill Creek at Windermere      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 400    
Initial cost      
Land $ 29,551    
Buildings and improvements 69,032    
Costs capitalized subsequent to acquisition 16,181    
Gross amount carried at close of period      
Land and improvements 29,551    
Buildings and improvements 85,213    
Total 114,764    
Accumulated depreciation $ (52,568)    
Date of construction 2005    
Date acquired Sep-07    
Rental properties:      
Balance at the end of year $ 114,764    
Accumulated depreciation:      
Balance at the end of year $ 52,568    
Unencumbered Apartment Communities | Mill Creek at Windermere | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Mill Creek at Windermere | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Mio      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 103    
Initial cost      
Land $ 11,012    
Buildings and improvements 39,982    
Costs capitalized subsequent to acquisition 3,154    
Gross amount carried at close of period      
Land and improvements 11,012    
Buildings and improvements 43,136    
Total 54,148    
Accumulated depreciation $ (15,036)    
Date of construction 2015    
Date acquired Jan-16    
Rental properties:      
Balance at the end of year $ 54,148    
Accumulated depreciation:      
Balance at the end of year $ 15,036    
Unencumbered Apartment Communities | Mio | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Mio | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Mirabella      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 188    
Initial cost      
Land $ 6,180    
Buildings and improvements 26,673    
Costs capitalized subsequent to acquisition 22,137    
Gross amount carried at close of period      
Land and improvements 6,270    
Buildings and improvements 48,720    
Total 54,990    
Accumulated depreciation $ (37,519)    
Date of construction 2000    
Date acquired May-00    
Rental properties:      
Balance at the end of year $ 54,990    
Accumulated depreciation:      
Balance at the end of year $ 37,519    
Unencumbered Apartment Communities | Mirabella | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Mirabella | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Mira Monte      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 356    
Initial cost      
Land $ 7,165    
Buildings and improvements 28,459    
Costs capitalized subsequent to acquisition 19,200    
Gross amount carried at close of period      
Land and improvements 7,186    
Buildings and improvements 47,638    
Total 54,824    
Accumulated depreciation $ (36,551)    
Date of construction 1982    
Date acquired Dec-02    
Rental properties:      
Balance at the end of year $ 54,824    
Accumulated depreciation:      
Balance at the end of year $ 36,551    
Unencumbered Apartment Communities | Mira Monte | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Mira Monte | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Miracle Mile/Marbella      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 236    
Initial cost      
Land $ 7,791    
Buildings and improvements 23,075    
Costs capitalized subsequent to acquisition 22,833    
Gross amount carried at close of period      
Land and improvements 7,886    
Buildings and improvements 45,813    
Total 53,699    
Accumulated depreciation $ (37,872)    
Date of construction 1988    
Date acquired Aug-97    
Rental properties:      
Balance at the end of year $ 53,699    
Accumulated depreciation:      
Balance at the end of year $ 37,872    
Unencumbered Apartment Communities | Miracle Mile/Marbella | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Miracle Mile/Marbella | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Mission Hills      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 282    
Initial cost      
Land $ 10,099    
Buildings and improvements 38,778    
Costs capitalized subsequent to acquisition 18,363    
Gross amount carried at close of period      
Land and improvements 10,167    
Buildings and improvements 57,073    
Total 67,240    
Accumulated depreciation $ (40,293)    
Date of construction 1984    
Date acquired Jul-05    
Rental properties:      
Balance at the end of year $ 67,240    
Accumulated depreciation:      
Balance at the end of year $ 40,293    
Unencumbered Apartment Communities | Mission Hills | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Mission Hills | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Mission Peaks      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 453    
Initial cost      
Land $ 46,499    
Buildings and improvements 108,498    
Costs capitalized subsequent to acquisition 16,126    
Gross amount carried at close of period      
Land and improvements 46,499    
Buildings and improvements 124,624    
Total 171,123    
Accumulated depreciation $ (54,923)    
Date of construction 1995    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 171,123    
Accumulated depreciation:      
Balance at the end of year $ 54,923    
Unencumbered Apartment Communities | Mission Peaks | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Mission Peaks | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Mission Peaks II      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 336    
Initial cost      
Land $ 31,429    
Buildings and improvements 73,334    
Costs capitalized subsequent to acquisition 14,268    
Gross amount carried at close of period      
Land and improvements 31,429    
Buildings and improvements 87,602    
Total 119,031    
Accumulated depreciation $ (39,802)    
Date of construction 1989    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 119,031    
Accumulated depreciation:      
Balance at the end of year $ 39,802    
Unencumbered Apartment Communities | Mission Peaks II | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Mission Peaks II | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Montanosa      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 472    
Initial cost      
Land $ 26,697    
Buildings and improvements 106,787    
Costs capitalized subsequent to acquisition 18,437    
Gross amount carried at close of period      
Land and improvements 26,697    
Buildings and improvements 125,224    
Total 151,921    
Accumulated depreciation $ (53,799)    
Date of construction 1990    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 151,921    
Accumulated depreciation:      
Balance at the end of year $ 53,799    
Unencumbered Apartment Communities | Montclaire      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 390    
Initial cost      
Land $ 4,842    
Buildings and improvements 19,776    
Costs capitalized subsequent to acquisition 36,272    
Gross amount carried at close of period      
Land and improvements 4,997    
Buildings and improvements 55,893    
Total 60,890    
Accumulated depreciation $ (49,685)    
Date of construction 1973    
Date acquired Dec-88    
Rental properties:      
Balance at the end of year $ 60,890    
Accumulated depreciation:      
Balance at the end of year $ 49,685    
Unencumbered Apartment Communities | Montclaire | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Montclaire | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Montebello      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 248    
Initial cost      
Land $ 13,857    
Buildings and improvements 41,575    
Costs capitalized subsequent to acquisition 19,686    
Gross amount carried at close of period      
Land and improvements 13,858    
Buildings and improvements 61,260    
Total 75,118    
Accumulated depreciation $ (29,398)    
Date of construction 1996    
Date acquired Jul-12    
Rental properties:      
Balance at the end of year $ 75,118    
Accumulated depreciation:      
Balance at the end of year $ 29,398    
Unencumbered Apartment Communities | Montejo      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 124    
Initial cost      
Land $ 1,925    
Buildings and improvements 7,685    
Costs capitalized subsequent to acquisition 7,525    
Gross amount carried at close of period      
Land and improvements 2,194    
Buildings and improvements 14,941    
Total 17,135    
Accumulated depreciation $ (10,887)    
Date of construction 1974    
Date acquired Nov-01    
Rental properties:      
Balance at the end of year $ 17,135    
Accumulated depreciation:      
Balance at the end of year $ 10,887    
Unencumbered Apartment Communities | Monterey Villas      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 122    
Initial cost      
Land $ 2,349    
Buildings and improvements 5,579    
Costs capitalized subsequent to acquisition 10,382    
Gross amount carried at close of period      
Land and improvements 2,424    
Buildings and improvements 15,886    
Total 18,310    
Accumulated depreciation $ (12,639)    
Date of construction 1974    
Date acquired Jul-97    
Rental properties:      
Balance at the end of year $ 18,310    
Accumulated depreciation:      
Balance at the end of year $ 12,639    
Unencumbered Apartment Communities | Monterey Villas | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Monterey Villas | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Muse      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 152    
Initial cost      
Land $ 7,822    
Buildings and improvements 33,436    
Costs capitalized subsequent to acquisition 8,053    
Gross amount carried at close of period      
Land and improvements 7,823    
Buildings and improvements 41,488    
Total 49,311    
Accumulated depreciation $ (23,052)    
Date of construction 2011    
Date acquired Feb-11    
Rental properties:      
Balance at the end of year $ 49,311    
Accumulated depreciation:      
Balance at the end of year $ 23,052    
Unencumbered Apartment Communities | Muse | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Muse | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Mylo      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 476    
Initial cost      
Land $ 6,472    
Buildings and improvements 206,098    
Costs capitalized subsequent to acquisition 1,663    
Gross amount carried at close of period      
Land and improvements 6,472    
Buildings and improvements 207,761    
Total 214,233    
Accumulated depreciation $ (55,159)    
Date of construction 2021    
Date acquired Jun-21    
Rental properties:      
Balance at the end of year $ 214,233    
Accumulated depreciation:      
Balance at the end of year $ 55,159    
Unencumbered Apartment Communities | Mylo | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Mylo | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | One Hundred Grand      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 166    
Initial cost      
Land $ 20,150    
Buildings and improvements 84,535    
Costs capitalized subsequent to acquisition 809    
Gross amount carried at close of period      
Land and improvements 20,150    
Buildings and improvements 85,344    
Total 105,494    
Accumulated depreciation $ (2,373)    
Date of construction 2016    
Date acquired Feb-25    
Rental properties:      
Balance at the end of year $ 105,494    
Accumulated depreciation:      
Balance at the end of year $ 2,373    
Unencumbered Apartment Communities | 1000 Kiely      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 121    
Initial cost      
Land $ 9,359    
Buildings and improvements 21,845    
Costs capitalized subsequent to acquisition 12,262    
Gross amount carried at close of period      
Land and improvements 9,359    
Buildings and improvements 34,107    
Total 43,466    
Accumulated depreciation $ (20,493)    
Date of construction 1971    
Date acquired Mar-11    
Rental properties:      
Balance at the end of year $ 43,466    
Accumulated depreciation:      
Balance at the end of year $ 20,493    
Unencumbered Apartment Communities | Palm Valley      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 1,100    
Initial cost      
Land $ 133,802    
Buildings and improvements 312,205    
Costs capitalized subsequent to acquisition 44,690    
Gross amount carried at close of period      
Land and improvements 133,802    
Buildings and improvements 356,895    
Total 490,697    
Accumulated depreciation $ (121,062)    
Date of construction 2008    
Date acquired Jan-17    
Rental properties:      
Balance at the end of year $ 490,697    
Accumulated depreciation:      
Balance at the end of year $ 121,062    
Unencumbered Apartment Communities | Palm Valley | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Palm Valley | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Park Catalina      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 90    
Initial cost      
Land $ 4,710    
Buildings and improvements 18,839    
Costs capitalized subsequent to acquisition 6,065    
Gross amount carried at close of period      
Land and improvements 4,710    
Buildings and improvements 24,904    
Total 29,614    
Accumulated depreciation $ (12,755)    
Date of construction 2002    
Date acquired Jun-12    
Rental properties:      
Balance at the end of year $ 29,614    
Accumulated depreciation:      
Balance at the end of year $ 12,755    
Unencumbered Apartment Communities | Park Catalina | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Park Catalina | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Park Highland      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 250    
Initial cost      
Land $ 9,391    
Buildings and improvements 38,224    
Costs capitalized subsequent to acquisition 17,232    
Gross amount carried at close of period      
Land and improvements 9,391    
Buildings and improvements 55,456    
Total 64,847    
Accumulated depreciation $ (30,163)    
Date of construction 1993    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 64,847    
Accumulated depreciation:      
Balance at the end of year $ 30,163    
Unencumbered Apartment Communities | Park Highland | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Park Highland | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Park Hill at Issaquah      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 245    
Initial cost      
Land $ 7,284    
Buildings and improvements 21,937    
Costs capitalized subsequent to acquisition 16,526    
Gross amount carried at close of period      
Land and improvements 7,284    
Buildings and improvements 38,463    
Total 45,747    
Accumulated depreciation $ (28,447)    
Date of construction 1999    
Date acquired Feb-99    
Rental properties:      
Balance at the end of year $ 45,747    
Accumulated depreciation:      
Balance at the end of year $ 28,447    
Unencumbered Apartment Communities | Park Hill at Issaquah | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Park Hill at Issaquah | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Park Viridian      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 326    
Initial cost      
Land $ 15,894    
Buildings and improvements 63,574    
Costs capitalized subsequent to acquisition 11,194    
Gross amount carried at close of period      
Land and improvements 15,894    
Buildings and improvements 74,768    
Total 90,662    
Accumulated depreciation $ (31,790)    
Date of construction 2008    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 90,662    
Accumulated depreciation:      
Balance at the end of year $ 31,790    
Unencumbered Apartment Communities | Park Viridian | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Park Viridian | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Park West      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 126    
Initial cost      
Land $ 9,424    
Buildings and improvements 21,988    
Costs capitalized subsequent to acquisition 15,349    
Gross amount carried at close of period      
Land and improvements 9,424    
Buildings and improvements 37,337    
Total 46,761    
Accumulated depreciation $ (23,388)    
Date of construction 1958    
Date acquired Sep-12    
Rental properties:      
Balance at the end of year $ 46,761    
Accumulated depreciation:      
Balance at the end of year $ 23,388    
Unencumbered Apartment Communities | Park West | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Park West | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Parkside Court      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 210    
Initial cost      
Land $ 11,276    
Buildings and improvements 47,272    
Costs capitalized subsequent to acquisition 2,064    
Gross amount carried at close of period      
Land and improvements 11,276    
Buildings and improvements 49,336    
Total 60,612    
Accumulated depreciation $ (3,249)    
Date of construction 1986    
Date acquired Mar-24    
Rental properties:      
Balance at the end of year $ 60,612    
Accumulated depreciation:      
Balance at the end of year $ 3,249    
Unencumbered Apartment Communities | Parkside Court | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Parkside Court | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Parkwood at Mill Creek      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 240    
Initial cost      
Land $ 10,680    
Buildings and improvements 42,722    
Costs capitalized subsequent to acquisition 6,340    
Gross amount carried at close of period      
Land and improvements 10,680    
Buildings and improvements 49,062    
Total 59,742    
Accumulated depreciation $ (21,340)    
Date of construction 1989    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 59,742    
Accumulated depreciation:      
Balance at the end of year $ 21,340    
Unencumbered Apartment Communities | Parkwood at Mill Creek | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Parkwood at Mill Creek | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Revere Campbell      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 269    
Initial cost      
Land $ 13,472    
Buildings and improvements 102,940    
Costs capitalized subsequent to acquisition 1,672    
Gross amount carried at close of period      
Land and improvements 13,472    
Buildings and improvements 104,612    
Total 118,084    
Accumulated depreciation $ (5,338)    
Date of construction 2021    
Date acquired Jul-24    
Rental properties:      
Balance at the end of year $ 118,084    
Accumulated depreciation:      
Balance at the end of year $ 5,338    
Unencumbered Apartment Communities | Revere Campbell | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Revere Campbell | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Patent 523      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 295    
Initial cost      
Land $ 14,558    
Buildings and improvements 69,417    
Costs capitalized subsequent to acquisition 10,017    
Gross amount carried at close of period      
Land and improvements 14,558    
Buildings and improvements 79,434    
Total 93,992    
Accumulated depreciation $ (44,131)    
Date of construction 2010    
Date acquired Mar-10    
Rental properties:      
Balance at the end of year $ 93,992    
Accumulated depreciation:      
Balance at the end of year $ 44,131    
Unencumbered Apartment Communities | Patent 523 | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Patent 523 | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Pathways at Bixby Village      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 296    
Initial cost      
Land $ 4,083    
Buildings and improvements 16,757    
Costs capitalized subsequent to acquisition 25,367    
Gross amount carried at close of period      
Land and improvements 6,239    
Buildings and improvements 39,968    
Total 46,207    
Accumulated depreciation $ (37,123)    
Date of construction 1975    
Date acquired Feb-91    
Rental properties:      
Balance at the end of year $ 46,207    
Accumulated depreciation:      
Balance at the end of year $ 37,123    
Unencumbered Apartment Communities | Pathways at Bixby Village | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Pathways at Bixby Village | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Piedmont      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 396    
Initial cost      
Land $ 19,848    
Buildings and improvements 59,606    
Costs capitalized subsequent to acquisition 23,707    
Gross amount carried at close of period      
Land and improvements 19,848    
Buildings and improvements 83,313    
Total 103,161    
Accumulated depreciation $ (40,540)    
Date of construction 1969    
Date acquired May-14    
Rental properties:      
Balance at the end of year $ 103,161    
Accumulated depreciation:      
Balance at the end of year $ 40,540    
Unencumbered Apartment Communities | Piedmont | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Piedmont | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Pinehurst      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 28    
Initial cost      
Land $ 0    
Buildings and improvements 1,711    
Costs capitalized subsequent to acquisition 1,353    
Gross amount carried at close of period      
Land and improvements 0    
Buildings and improvements 3,064    
Total 3,064    
Accumulated depreciation $ (2,447)    
Date of construction 1973    
Date acquired Dec-04    
Rental properties:      
Balance at the end of year $ 3,064    
Accumulated depreciation:      
Balance at the end of year $ 2,447    
Unencumbered Apartment Communities | Pinehurst | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Pinehurst | Maximum      
Gross amount carried at close of period      
Life used for depreciation 24 years    
Unencumbered Apartment Communities | Pinnacle at Fullerton      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 192    
Initial cost      
Land $ 11,019    
Buildings and improvements 45,932    
Costs capitalized subsequent to acquisition 8,438    
Gross amount carried at close of period      
Land and improvements 11,019    
Buildings and improvements 54,370    
Total 65,389    
Accumulated depreciation $ (24,148)    
Date of construction 2004    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 65,389    
Accumulated depreciation:      
Balance at the end of year $ 24,148    
Unencumbered Apartment Communities | Pinnacle at Fullerton | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Pinnacle at Fullerton | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Pinnacle on Lake Washington      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 180    
Initial cost      
Land $ 7,760    
Buildings and improvements 31,041    
Costs capitalized subsequent to acquisition 7,127    
Gross amount carried at close of period      
Land and improvements 7,760    
Buildings and improvements 38,168    
Total 45,928    
Accumulated depreciation $ (17,485)    
Date of construction 2001    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 45,928    
Accumulated depreciation:      
Balance at the end of year $ 17,485    
Unencumbered Apartment Communities | Pinnacle on Lake Washington | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Pinnacle on Lake Washington | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Pinnacle at MacArthur Place      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 253    
Initial cost      
Land $ 15,810    
Buildings and improvements 66,401    
Costs capitalized subsequent to acquisition 14,089    
Gross amount carried at close of period      
Land and improvements 15,810    
Buildings and improvements 80,490    
Total 96,300    
Accumulated depreciation $ (34,315)    
Date of construction 2002    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 96,300    
Accumulated depreciation:      
Balance at the end of year $ 34,315    
Unencumbered Apartment Communities | Pinnacle at MacArthur Place | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Pinnacle at MacArthur Place | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Pinnacle at Otay Ranch I & II      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 364    
Initial cost      
Land $ 17,023    
Buildings and improvements 68,093    
Costs capitalized subsequent to acquisition 11,055    
Gross amount carried at close of period      
Land and improvements 17,023    
Buildings and improvements 79,148    
Total 96,171    
Accumulated depreciation $ (34,138)    
Date of construction 2001    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 96,171    
Accumulated depreciation:      
Balance at the end of year $ 34,138    
Unencumbered Apartment Communities | Pinnacle at Otay Ranch I & II | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Pinnacle at Otay Ranch I & II | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Pinnacle at Talega      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 362    
Initial cost      
Land $ 19,292    
Buildings and improvements 77,168    
Costs capitalized subsequent to acquisition 14,312    
Gross amount carried at close of period      
Land and improvements 19,292    
Buildings and improvements 91,480    
Total 110,772    
Accumulated depreciation $ (38,001)    
Date of construction 2002    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 110,772    
Accumulated depreciation:      
Balance at the end of year $ 38,001    
Unencumbered Apartment Communities | Pinnacle at Talega | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Pinnacle at Talega | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Pinnacle Sonata      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 268    
Initial cost      
Land $ 14,647    
Buildings and improvements 58,586    
Costs capitalized subsequent to acquisition 11,380    
Gross amount carried at close of period      
Land and improvements 14,647    
Buildings and improvements 69,966    
Total 84,613    
Accumulated depreciation $ (31,246)    
Date of construction 2000    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 84,613    
Accumulated depreciation:      
Balance at the end of year $ 31,246    
Unencumbered Apartment Communities | Pinnacle Sonata | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Pinnacle Sonata | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Pointe at Cupertino      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 116    
Initial cost      
Land $ 4,505    
Buildings and improvements 17,605    
Costs capitalized subsequent to acquisition 15,816    
Gross amount carried at close of period      
Land and improvements 4,505    
Buildings and improvements 33,421    
Total 37,926    
Accumulated depreciation $ (26,248)    
Date of construction 1963    
Date acquired Aug-98    
Rental properties:      
Balance at the end of year $ 37,926    
Accumulated depreciation:      
Balance at the end of year $ 26,248    
Unencumbered Apartment Communities | Pointe at Cupertino | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Pointe at Cupertino | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Pure Redmond      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 105    
Initial cost      
Land $ 7,461    
Buildings and improvements 31,363    
Costs capitalized subsequent to acquisition 3,071    
Gross amount carried at close of period      
Land and improvements 7,461    
Buildings and improvements 34,434    
Total 41,895    
Accumulated depreciation $ (8,064)    
Date of construction 2016    
Date acquired Dec-19    
Rental properties:      
Balance at the end of year $ 41,895    
Accumulated depreciation:      
Balance at the end of year $ 8,064    
Unencumbered Apartment Communities | Pure Redmond | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Pure Redmond | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Radius      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 264    
Initial cost      
Land $ 11,702    
Buildings and improvements 152,336    
Costs capitalized subsequent to acquisition 6,188    
Gross amount carried at close of period      
Land and improvements 11,702    
Buildings and improvements 158,524    
Total 170,226    
Accumulated depreciation $ (66,016)    
Date of construction 2015    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 170,226    
Accumulated depreciation:      
Balance at the end of year $ 66,016    
Unencumbered Apartment Communities | Radius | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Radius | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Reed Square      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 100    
Initial cost      
Land $ 6,873    
Buildings and improvements 16,037    
Costs capitalized subsequent to acquisition 10,366    
Gross amount carried at close of period      
Land and improvements 6,873    
Buildings and improvements 26,403    
Total 33,276    
Accumulated depreciation $ (16,440)    
Date of construction 1970    
Date acquired Jan-12    
Rental properties:      
Balance at the end of year $ 33,276    
Accumulated depreciation:      
Balance at the end of year $ 16,440    
Unencumbered Apartment Communities | Reed Square | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Reed Square | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Regency at Encino      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 75    
Initial cost      
Land $ 3,184    
Buildings and improvements 12,737    
Costs capitalized subsequent to acquisition 6,485    
Gross amount carried at close of period      
Land and improvements 3,184    
Buildings and improvements 19,222    
Total 22,406    
Accumulated depreciation $ (11,618)    
Date of construction 1989    
Date acquired Dec-09    
Rental properties:      
Balance at the end of year $ 22,406    
Accumulated depreciation:      
Balance at the end of year $ 11,618    
Unencumbered Apartment Communities | Regency at Encino | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Regency at Encino | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Regency Palm Court      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 116    
Initial cost      
Land $ 7,763    
Buildings and improvements 28,019    
Costs capitalized subsequent to acquisition 2,273    
Gross amount carried at close of period      
Land and improvements 7,763    
Buildings and improvements 30,292    
Total 38,055    
Accumulated depreciation $ (4,013)    
Date of construction 1987    
Date acquired Jul-22    
Rental properties:      
Balance at the end of year $ 38,055    
Accumulated depreciation:      
Balance at the end of year $ 4,013    
Unencumbered Apartment Communities | Renaissance at Uptown Orange      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 460    
Initial cost      
Land $ 27,870    
Buildings and improvements 111,482    
Costs capitalized subsequent to acquisition 17,727    
Gross amount carried at close of period      
Land and improvements 27,870    
Buildings and improvements 129,209    
Total 157,079    
Accumulated depreciation $ (53,979)    
Date of construction 2007    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 157,079    
Accumulated depreciation:      
Balance at the end of year $ 53,979    
Unencumbered Apartment Communities | Renaissance at Uptown Orange | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Renaissance at Uptown Orange | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Reveal      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 438    
Initial cost      
Land $ 25,073    
Buildings and improvements 121,314    
Costs capitalized subsequent to acquisition 9,794    
Gross amount carried at close of period      
Land and improvements 25,073    
Buildings and improvements 131,108    
Total 156,181    
Accumulated depreciation $ (52,605)    
Date of construction 2010    
Date acquired Apr-15    
Rental properties:      
Balance at the end of year $ 156,181    
Accumulated depreciation:      
Balance at the end of year $ 52,605    
Unencumbered Apartment Communities | Reveal | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Reveal | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Revere Campbell      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 168    
Initial cost      
Land $ 22,535    
Buildings and improvements 93,977    
Costs capitalized subsequent to acquisition 941    
Gross amount carried at close of period      
Land and improvements 22,535    
Buildings and improvements 94,918    
Total 117,453    
Accumulated depreciation $ (2,064)    
Date of construction 2015    
Date acquired May-25    
Rental properties:      
Balance at the end of year $ 117,453    
Accumulated depreciation:      
Balance at the end of year $ 2,064    
Unencumbered Apartment Communities | ROEN Menlo Park      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 146    
Initial cost      
Land $ 19,319    
Buildings and improvements 59,233    
Costs capitalized subsequent to acquisition 468    
Gross amount carried at close of period      
Land and improvements 19,319    
Buildings and improvements 59,701    
Total 79,020    
Accumulated depreciation $ (1,682)    
Date of construction 2017    
Date acquired Feb-25    
Rental properties:      
Balance at the end of year $ 79,020    
Accumulated depreciation:      
Balance at the end of year $ 1,682    
Unencumbered Apartment Communities | Salmon Run at Perry Creek      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 132    
Initial cost      
Land $ 3,717    
Buildings and improvements 11,483    
Costs capitalized subsequent to acquisition 6,065    
Gross amount carried at close of period      
Land and improvements 3,801    
Buildings and improvements 17,464    
Total 21,265    
Accumulated depreciation $ (13,242)    
Date of construction 2000    
Date acquired Oct-00    
Rental properties:      
Balance at the end of year $ 21,265    
Accumulated depreciation:      
Balance at the end of year $ 13,242    
Unencumbered Apartment Communities | Salmon Run at Perry Creek | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Salmon Run at Perry Creek | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Sammamish View      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 153    
Initial cost      
Land $ 3,324    
Buildings and improvements 7,501    
Costs capitalized subsequent to acquisition 10,147    
Gross amount carried at close of period      
Land and improvements 3,331    
Buildings and improvements 17,641    
Total 20,972    
Accumulated depreciation $ (15,826)    
Date of construction 1986    
Date acquired Nov-94    
Rental properties:      
Balance at the end of year $ 20,972    
Accumulated depreciation:      
Balance at the end of year $ 15,826    
Unencumbered Apartment Communities | Sammamish View | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Sammamish View | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | San Marcos      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 432    
Initial cost      
Land $ 15,563    
Buildings and improvements 36,204    
Costs capitalized subsequent to acquisition 43,841    
Gross amount carried at close of period      
Land and improvements 22,866    
Buildings and improvements 72,742    
Total 95,608    
Accumulated depreciation $ (52,605)    
Date of construction 2003    
Date acquired Nov-03    
Rental properties:      
Balance at the end of year $ 95,608    
Accumulated depreciation:      
Balance at the end of year $ 52,605    
Unencumbered Apartment Communities | San Marcos | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | San Marcos | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Santee Court/Santee Village      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 238    
Initial cost      
Land $ 9,581    
Buildings and improvements 40,317    
Costs capitalized subsequent to acquisition 20,704    
Gross amount carried at close of period      
Land and improvements 9,582    
Buildings and improvements 61,020    
Total 70,602    
Accumulated depreciation $ (34,687)    
Date of construction 2004    
Date acquired Oct-10    
Rental properties:      
Balance at the end of year $ 70,602    
Accumulated depreciation:      
Balance at the end of year $ 34,687    
Unencumbered Apartment Communities | Santee Court/Santee Village | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Santee Court/Santee Village | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Shadow Point      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 172    
Initial cost      
Land $ 2,812    
Buildings and improvements 11,170    
Costs capitalized subsequent to acquisition 9,718    
Gross amount carried at close of period      
Land and improvements 2,820    
Buildings and improvements 20,880    
Total 23,700    
Accumulated depreciation $ (14,937)    
Date of construction 1983    
Date acquired Dec-02    
Rental properties:      
Balance at the end of year $ 23,700    
Accumulated depreciation:      
Balance at the end of year $ 14,937    
Unencumbered Apartment Communities | Shadow Point | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Shadow Point | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Shadowbrook      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 418    
Initial cost      
Land $ 19,292    
Buildings and improvements 77,168    
Costs capitalized subsequent to acquisition 16,012    
Gross amount carried at close of period      
Land and improvements 19,292    
Buildings and improvements 93,180    
Total 112,472    
Accumulated depreciation $ (40,204)    
Date of construction 1986    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 112,472    
Accumulated depreciation:      
Balance at the end of year $ 40,204    
Unencumbered Apartment Communities | Shadowbrook | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Shadowbrook | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Skye at Bunker Hill      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 456    
Initial cost      
Land $ 11,498    
Buildings and improvements 27,871    
Costs capitalized subsequent to acquisition 109,048    
Gross amount carried at close of period      
Land and improvements 11,639    
Buildings and improvements 136,778    
Total 148,417    
Accumulated depreciation $ (122,182)    
Date of construction 1968    
Date acquired Mar-98    
Rental properties:      
Balance at the end of year $ 148,417    
Accumulated depreciation:      
Balance at the end of year $ 122,182    
Unencumbered Apartment Communities | Skye at Bunker Hill | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Skye at Bunker Hill | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Slater 116      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 108    
Initial cost      
Land $ 7,379    
Buildings and improvements 22,138    
Costs capitalized subsequent to acquisition 2,425    
Gross amount carried at close of period      
Land and improvements 7,379    
Buildings and improvements 24,563    
Total 31,942    
Accumulated depreciation $ (10,825)    
Date of construction 2013    
Date acquired Sep-13    
Rental properties:      
Balance at the end of year $ 31,942    
Accumulated depreciation:      
Balance at the end of year $ 10,825    
Unencumbered Apartment Communities | Slater 116 | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Slater 116 | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Solstice      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 280    
Initial cost      
Land $ 34,444    
Buildings and improvements 147,262    
Costs capitalized subsequent to acquisition 11,027    
Gross amount carried at close of period      
Land and improvements 34,444    
Buildings and improvements 158,289    
Total 192,733    
Accumulated depreciation $ (68,715)    
Date of construction 2014    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 192,733    
Accumulated depreciation:      
Balance at the end of year $ 68,715    
Unencumbered Apartment Communities | Solstice | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Solstice | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Station Park Green      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 599    
Initial cost      
Land $ 54,782    
Buildings and improvements 314,694    
Costs capitalized subsequent to acquisition 107,881    
Gross amount carried at close of period      
Land and improvements 67,204    
Buildings and improvements 410,153    
Total 477,357    
Accumulated depreciation $ (118,706)    
Date of construction 2018    
Date acquired Mar-18    
Rental properties:      
Balance at the end of year $ 477,357    
Accumulated depreciation:      
Balance at the end of year $ 118,706    
Unencumbered Apartment Communities | Station Park Green | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Station Park Green | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Stevenson Place      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 200    
Initial cost      
Land $ 996    
Buildings and improvements 5,582    
Costs capitalized subsequent to acquisition 16,993    
Gross amount carried at close of period      
Land and improvements 1,001    
Buildings and improvements 22,570    
Total 23,571    
Accumulated depreciation $ (20,321)    
Date of construction 1975    
Date acquired Apr-00    
Rental properties:      
Balance at the end of year $ 23,571    
Accumulated depreciation:      
Balance at the end of year $ 20,321    
Unencumbered Apartment Communities | Stevenson Place | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Stevenson Place | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Stonehedge Village      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 196    
Initial cost      
Land $ 3,167    
Buildings and improvements 12,603    
Costs capitalized subsequent to acquisition 14,500    
Gross amount carried at close of period      
Land and improvements 3,201    
Buildings and improvements 27,069    
Total 30,270    
Accumulated depreciation $ (22,633)    
Date of construction 1986    
Date acquired Oct-97    
Rental properties:      
Balance at the end of year $ 30,270    
Accumulated depreciation:      
Balance at the end of year $ 22,633    
Unencumbered Apartment Communities | Stonehedge Village | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Stonehedge Village | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Summerhill Park      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 100    
Initial cost      
Land $ 2,654    
Buildings and improvements 4,918    
Costs capitalized subsequent to acquisition 12,254    
Gross amount carried at close of period      
Land and improvements 2,656    
Buildings and improvements 17,170    
Total 19,826    
Accumulated depreciation $ (16,473)    
Date of construction 1988    
Date acquired Sep-88    
Rental properties:      
Balance at the end of year $ 19,826    
Accumulated depreciation:      
Balance at the end of year $ 16,473    
Unencumbered Apartment Communities | Summerhill Park | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Summerhill Park | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Summit Park      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 300    
Initial cost      
Land $ 5,959    
Buildings and improvements 23,670    
Costs capitalized subsequent to acquisition 13,684    
Gross amount carried at close of period      
Land and improvements 5,977    
Buildings and improvements 37,336    
Total 43,313    
Accumulated depreciation $ (27,927)    
Date of construction 1972    
Date acquired Dec-02    
Rental properties:      
Balance at the end of year $ 43,313    
Accumulated depreciation:      
Balance at the end of year $ 27,927    
Unencumbered Apartment Communities | Summit Park | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Summit Park | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Taylor 28      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 197    
Initial cost      
Land $ 13,915    
Buildings and improvements 57,700    
Costs capitalized subsequent to acquisition 6,851    
Gross amount carried at close of period      
Land and improvements 13,915    
Buildings and improvements 64,551    
Total 78,466    
Accumulated depreciation $ (27,990)    
Date of construction 2008    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 78,466    
Accumulated depreciation:      
Balance at the end of year $ 27,990    
Unencumbered Apartment Communities | Taylor 28 | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Taylor 28 | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | TENTEN Downtown      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 376    
Initial cost      
Land $ 22,671    
Buildings and improvements 144,203    
Costs capitalized subsequent to acquisition 0    
Gross amount carried at close of period      
Land and improvements 22,671    
Buildings and improvements 144,203    
Total 166,874    
Accumulated depreciation $ (629)    
Date of construction 2021    
Date acquired Nov-25    
Rental properties:      
Balance at the end of year $ 166,874    
Accumulated depreciation:      
Balance at the end of year $ 629    
Unencumbered Apartment Communities | The Audrey at Belltown      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 137    
Initial cost      
Land $ 9,228    
Buildings and improvements 36,911    
Costs capitalized subsequent to acquisition 3,757    
Gross amount carried at close of period      
Land and improvements 9,228    
Buildings and improvements 40,668    
Total 49,896    
Accumulated depreciation $ (17,421)    
Date of construction 1992    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 49,896    
Accumulated depreciation:      
Balance at the end of year $ 17,421    
Unencumbered Apartment Communities | The Audrey at Belltown | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | The Audrey at Belltown | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Avery      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 122    
Initial cost      
Land $ 6,964    
Buildings and improvements 29,922    
Costs capitalized subsequent to acquisition 3,055    
Gross amount carried at close of period      
Land and improvements 6,964    
Buildings and improvements 32,977    
Total 39,941    
Accumulated depreciation $ (13,287)    
Date of construction 2014    
Date acquired Mar-14    
Rental properties:      
Balance at the end of year $ 39,941    
Accumulated depreciation:      
Balance at the end of year $ 13,287    
Unencumbered Apartment Communities | The Avery | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Avery | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Bernard      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 63    
Initial cost      
Land $ 3,699    
Buildings and improvements 11,345    
Costs capitalized subsequent to acquisition 1,306    
Gross amount carried at close of period      
Land and improvements 3,689    
Buildings and improvements 12,661    
Total 16,350    
Accumulated depreciation $ (6,459)    
Date of construction 2008    
Date acquired Sep-11    
Rental properties:      
Balance at the end of year $ 16,350    
Accumulated depreciation:      
Balance at the end of year $ 6,459    
Unencumbered Apartment Communities | The Bernard | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Bernard | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Blake LA      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 196    
Initial cost      
Land $ 4,023    
Buildings and improvements 9,527    
Costs capitalized subsequent to acquisition 26,560    
Gross amount carried at close of period      
Land and improvements 4,031    
Buildings and improvements 36,079    
Total 40,110    
Accumulated depreciation $ (31,310)    
Date of construction 1979    
Date acquired Jun-97    
Rental properties:      
Balance at the end of year $ 40,110    
Accumulated depreciation:      
Balance at the end of year $ 31,310    
Unencumbered Apartment Communities | The Blake LA | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Blake LA | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Cairns      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 99    
Initial cost      
Land $ 6,937    
Buildings and improvements 20,679    
Costs capitalized subsequent to acquisition 4,172    
Gross amount carried at close of period      
Land and improvements 6,939    
Buildings and improvements 24,849    
Total 31,788    
Accumulated depreciation $ (15,798)    
Date of construction 2006    
Date acquired Jun-07    
Rental properties:      
Balance at the end of year $ 31,788    
Accumulated depreciation:      
Balance at the end of year $ 15,798    
Unencumbered Apartment Communities | The Cairns | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Cairns | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Elliot at Mukilteo      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 301    
Initial cost      
Land $ 2,498    
Buildings and improvements 10,595    
Costs capitalized subsequent to acquisition 21,773    
Gross amount carried at close of period      
Land and improvements 2,824    
Buildings and improvements 32,042    
Total 34,866    
Accumulated depreciation $ (28,687)    
Date of construction 1981    
Date acquired Jan-97    
Rental properties:      
Balance at the end of year $ 34,866    
Accumulated depreciation:      
Balance at the end of year $ 28,687    
Unencumbered Apartment Communities | The Elliot at Mukilteo | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Elliot at Mukilteo | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Hallie      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 292    
Initial cost      
Land $ 2,202    
Buildings and improvements 4,794    
Costs capitalized subsequent to acquisition 59,333    
Gross amount carried at close of period      
Land and improvements 8,385    
Buildings and improvements 57,944    
Total 66,329    
Accumulated depreciation $ (52,643)    
Date of construction 1972    
Date acquired Apr-97    
Rental properties:      
Balance at the end of year $ 66,329    
Accumulated depreciation:      
Balance at the end of year $ 52,643    
Unencumbered Apartment Communities | The Hallie | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Hallie | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Havens      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 440    
Initial cost      
Land $ 26,138    
Buildings and improvements 137,933    
Costs capitalized subsequent to acquisition 2,374    
Gross amount carried at close of period      
Land and improvements 26,138    
Buildings and improvements 140,307    
Total 166,445    
Accumulated depreciation $ (8,782)    
Date of construction 1969    
Date acquired Mar-24    
Rental properties:      
Balance at the end of year $ 166,445    
Accumulated depreciation:      
Balance at the end of year $ 8,782    
Unencumbered Apartment Communities | The Havens | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Havens | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Huntington      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 276    
Initial cost      
Land $ 10,374    
Buildings and improvements 41,495    
Costs capitalized subsequent to acquisition 11,291    
Gross amount carried at close of period      
Land and improvements 10,374    
Buildings and improvements 52,786    
Total 63,160    
Accumulated depreciation $ (26,703)    
Date of construction 1975    
Date acquired Jun-12    
Rental properties:      
Balance at the end of year $ 63,160    
Accumulated depreciation:      
Balance at the end of year $ 26,703    
Unencumbered Apartment Communities | The Huntington | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Huntington | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Landing at Jack London Square      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 282    
Initial cost      
Land $ 33,554    
Buildings and improvements 78,292    
Costs capitalized subsequent to acquisition 11,952    
Gross amount carried at close of period      
Land and improvements 33,554    
Buildings and improvements 90,244    
Total 123,798    
Accumulated depreciation $ (40,461)    
Date of construction 2001    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 123,798    
Accumulated depreciation:      
Balance at the end of year $ 40,461    
Unencumbered Apartment Communities | The Landing at Jack London Square | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | The Landing at Jack London Square | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Lofts at Pinehurst      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 118    
Initial cost      
Land $ 1,570    
Buildings and improvements 3,912    
Costs capitalized subsequent to acquisition 7,172    
Gross amount carried at close of period      
Land and improvements 1,618    
Buildings and improvements 11,036    
Total 12,654    
Accumulated depreciation $ (9,008)    
Date of construction 1971    
Date acquired Jun-97    
Rental properties:      
Balance at the end of year $ 12,654    
Accumulated depreciation:      
Balance at the end of year $ 9,008    
Unencumbered Apartment Communities | The Lofts at Pinehurst | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Lofts at Pinehurst | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Palisades      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 192    
Initial cost      
Land $ 1,560    
Buildings and improvements 6,242    
Costs capitalized subsequent to acquisition 17,956    
Gross amount carried at close of period      
Land and improvements 1,565    
Buildings and improvements 24,193    
Total 25,758    
Accumulated depreciation $ (21,385)    
Date of construction 1977    
Date acquired May-90    
Rental properties:      
Balance at the end of year $ 25,758    
Accumulated depreciation:      
Balance at the end of year $ 21,385    
Unencumbered Apartment Communities | The Palisades | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Palisades | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Palms at Laguna Niguel      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 460    
Initial cost      
Land $ 23,584    
Buildings and improvements 94,334    
Costs capitalized subsequent to acquisition 19,723    
Gross amount carried at close of period      
Land and improvements 23,584    
Buildings and improvements 114,057    
Total 137,641    
Accumulated depreciation $ (51,662)    
Date of construction 1988    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 137,641    
Accumulated depreciation:      
Balance at the end of year $ 51,662    
Unencumbered Apartment Communities | The Palms at Laguna Niguel | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | The Palms at Laguna Niguel | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Parc at Pruneyard      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 252    
Initial cost      
Land $ 31,068    
Buildings and improvements 91,156    
Costs capitalized subsequent to acquisition 570    
Gross amount carried at close of period      
Land and improvements 31,068    
Buildings and improvements 91,726    
Total 122,794    
Accumulated depreciation $ (2,045)    
Date of construction 1968    
Date acquired May-25    
Rental properties:      
Balance at the end of year $ 122,794    
Accumulated depreciation:      
Balance at the end of year $ 2,045    
Unencumbered Apartment Communities | The Plaza      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 307    
Initial cost      
Land $ 34,341    
Buildings and improvements 126,428    
Costs capitalized subsequent to acquisition 846    
Gross amount carried at close of period      
Land and improvements 34,341    
Buildings and improvements 127,274    
Total 161,615    
Accumulated depreciation $ (3,908)    
Date of construction 2013    
Date acquired Jan-25    
Rental properties:      
Balance at the end of year $ 161,615    
Accumulated depreciation:      
Balance at the end of year $ 3,908    
Unencumbered Apartment Communities | The Stuart      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 188    
Initial cost      
Land $ 13,574    
Buildings and improvements 54,298    
Costs capitalized subsequent to acquisition 6,488    
Gross amount carried at close of period      
Land and improvements 13,574    
Buildings and improvements 60,786    
Total 74,360    
Accumulated depreciation $ (26,076)    
Date of construction 2007    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 74,360    
Accumulated depreciation:      
Balance at the end of year $ 26,076    
Unencumbered Apartment Communities | The Stuart | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | The Stuart | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Trails of Redmond      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 423    
Initial cost      
Land $ 21,930    
Buildings and improvements 87,720    
Costs capitalized subsequent to acquisition 12,417    
Gross amount carried at close of period      
Land and improvements 21,930    
Buildings and improvements 100,137    
Total 122,067    
Accumulated depreciation $ (43,636)    
Date of construction 1985    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 122,067    
Accumulated depreciation:      
Balance at the end of year $ 43,636    
Unencumbered Apartment Communities | The Trails of Redmond | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | The Trails of Redmond | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Village at Toluca Lake      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 146    
Initial cost      
Land $ 14,634    
Buildings and improvements 48,297    
Costs capitalized subsequent to acquisition 3,002    
Gross amount carried at close of period      
Land and improvements 14,634    
Buildings and improvements 51,299    
Total 65,933    
Accumulated depreciation $ (8,728)    
Date of construction 1974    
Date acquired Jun-21    
Rental properties:      
Balance at the end of year $ 65,933    
Accumulated depreciation:      
Balance at the end of year $ 8,728    
Unencumbered Apartment Communities | The Village at Toluca Lake | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Village at Toluca Lake | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Tierra Vista      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 404    
Initial cost      
Land $ 13,652    
Buildings and improvements 53,336    
Costs capitalized subsequent to acquisition 14,508    
Gross amount carried at close of period      
Land and improvements 13,661    
Buildings and improvements 67,835    
Total 81,496    
Accumulated depreciation $ (48,040)    
Date of construction 2001    
Date acquired Jan-01    
Rental properties:      
Balance at the end of year $ 81,496    
Accumulated depreciation:      
Balance at the end of year $ 48,040    
Unencumbered Apartment Communities | Tierra Vista | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Tierra Vista | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Tiffany Court      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 101    
Initial cost      
Land $ 6,949    
Buildings and improvements 27,796    
Costs capitalized subsequent to acquisition 4,046    
Gross amount carried at close of period      
Land and improvements 6,949    
Buildings and improvements 31,842    
Total 38,791    
Accumulated depreciation $ (13,810)    
Date of construction 1987    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 38,791    
Accumulated depreciation:      
Balance at the end of year $ 13,810    
Unencumbered Apartment Communities | Tiffany Court | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Tiffany Court | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Trabuco Villas      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 132    
Initial cost      
Land $ 3,638    
Buildings and improvements 8,640    
Costs capitalized subsequent to acquisition 7,997    
Gross amount carried at close of period      
Land and improvements 3,890    
Buildings and improvements 16,385    
Total 20,275    
Accumulated depreciation $ (13,058)    
Date of construction 1985    
Date acquired Oct-97    
Rental properties:      
Balance at the end of year $ 20,275    
Accumulated depreciation:      
Balance at the end of year $ 13,058    
Unencumbered Apartment Communities | Trabuco Villas | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Trabuco Villas | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Valley Park      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 160    
Initial cost      
Land $ 3,361    
Buildings and improvements 13,420    
Costs capitalized subsequent to acquisition 10,140    
Gross amount carried at close of period      
Land and improvements 3,761    
Buildings and improvements 23,160    
Total 26,921    
Accumulated depreciation $ (17,173)    
Date of construction 1969    
Date acquired Nov-01    
Rental properties:      
Balance at the end of year $ 26,921    
Accumulated depreciation:      
Balance at the end of year $ 17,173    
Unencumbered Apartment Communities | Via      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 284    
Initial cost      
Land $ 22,000    
Buildings and improvements 82,270    
Costs capitalized subsequent to acquisition 9,543    
Gross amount carried at close of period      
Land and improvements 22,016    
Buildings and improvements 91,797    
Total 113,813    
Accumulated depreciation $ (47,333)    
Date of construction 2011    
Date acquired Jul-11    
Rental properties:      
Balance at the end of year $ 113,813    
Accumulated depreciation:      
Balance at the end of year $ 47,333    
Unencumbered Apartment Communities | Via | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Via | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Villa Angelina      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 256    
Initial cost      
Land $ 4,498    
Buildings and improvements 17,962    
Costs capitalized subsequent to acquisition 11,835    
Gross amount carried at close of period      
Land and improvements 4,962    
Buildings and improvements 29,333    
Total 34,295    
Accumulated depreciation $ (22,697)    
Date of construction 1970    
Date acquired Nov-01    
Rental properties:      
Balance at the end of year $ 34,295    
Accumulated depreciation:      
Balance at the end of year $ 22,697    
Unencumbered Apartment Communities | Villa Granada      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 270    
Initial cost      
Land $ 38,299    
Buildings and improvements 89,365    
Costs capitalized subsequent to acquisition 6,220    
Gross amount carried at close of period      
Land and improvements 38,299    
Buildings and improvements 95,585    
Total 133,884    
Accumulated depreciation $ (39,711)    
Date of construction 2010    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 133,884    
Accumulated depreciation:      
Balance at the end of year $ 39,711    
Unencumbered Apartment Communities | Villa Granada | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Villa Granada | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Villa Siena      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 274    
Initial cost      
Land $ 13,842    
Buildings and improvements 55,367    
Costs capitalized subsequent to acquisition 20,855    
Gross amount carried at close of period      
Land and improvements 13,842    
Buildings and improvements 76,222    
Total 90,064    
Accumulated depreciation $ (34,434)    
Date of construction 1974    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 90,064    
Accumulated depreciation:      
Balance at the end of year $ 34,434    
Unencumbered Apartment Communities | Villa Siena | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Villa Siena | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Village Green      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 272    
Initial cost      
Land $ 6,488    
Buildings and improvements 36,768    
Costs capitalized subsequent to acquisition 9,356    
Gross amount carried at close of period      
Land and improvements 6,488    
Buildings and improvements 46,124    
Total 52,612    
Accumulated depreciation $ (20,184)    
Date of construction 1971    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 52,612    
Accumulated depreciation:      
Balance at the end of year $ 20,184    
Unencumbered Apartment Communities | Village Green | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Village Green | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | ViO      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 234    
Initial cost      
Land $ 13,577    
Buildings and improvements 87,059    
Costs capitalized subsequent to acquisition 225    
Gross amount carried at close of period      
Land and improvements 13,577    
Buildings and improvements 87,284    
Total 100,861    
Accumulated depreciation $ (645)    
Date of construction 2016    
Date acquired Sep-25    
Rental properties:      
Balance at the end of year $ 100,861    
Accumulated depreciation:      
Balance at the end of year $ 645    
Unencumbered Apartment Communities | Vista Belvedere      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 76    
Initial cost      
Land $ 5,573    
Buildings and improvements 11,901    
Costs capitalized subsequent to acquisition 12,111    
Gross amount carried at close of period      
Land and improvements 5,573    
Buildings and improvements 24,012    
Total 29,585    
Accumulated depreciation $ (17,827)    
Date of construction 1963    
Date acquired Aug-04    
Rental properties:      
Balance at the end of year $ 29,585    
Accumulated depreciation:      
Balance at the end of year $ 17,827    
Unencumbered Apartment Communities | Vista Belvedere | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Vista Belvedere | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Vox      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 58    
Initial cost      
Land $ 5,545    
Buildings and improvements 16,635    
Costs capitalized subsequent to acquisition 1,326    
Gross amount carried at close of period      
Land and improvements 5,545    
Buildings and improvements 17,961    
Total 23,506    
Accumulated depreciation $ (7,359)    
Date of construction 2013    
Date acquired Oct-13    
Rental properties:      
Balance at the end of year $ 23,506    
Accumulated depreciation:      
Balance at the end of year $ 7,359    
Unencumbered Apartment Communities | Vox | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Vox | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Wallace on Sunset      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 200    
Initial cost      
Land $ 24,005    
Buildings and improvements 80,466    
Costs capitalized subsequent to acquisition 7,131    
Gross amount carried at close of period      
Land and improvements 24,005    
Buildings and improvements 87,597    
Total 111,602    
Accumulated depreciation $ (29,720)    
Date of construction 2021    
Date acquired Dec-21    
Rental properties:      
Balance at the end of year $ 111,602    
Accumulated depreciation:      
Balance at the end of year $ 29,720    
Unencumbered Apartment Communities | Wallace on Sunset | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Wallace on Sunset | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Walnut Heights      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 163    
Initial cost      
Land $ 4,858    
Buildings and improvements 19,168    
Costs capitalized subsequent to acquisition 8,641    
Gross amount carried at close of period      
Land and improvements 4,887    
Buildings and improvements 27,780    
Total 32,667    
Accumulated depreciation $ (20,452)    
Date of construction 1964    
Date acquired Oct-03    
Rental properties:      
Balance at the end of year $ 32,667    
Accumulated depreciation:      
Balance at the end of year $ 20,452    
Unencumbered Apartment Communities | Walnut Heights | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Walnut Heights | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Wandering Creek      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 156    
Initial cost      
Land $ 1,285    
Buildings and improvements 4,980    
Costs capitalized subsequent to acquisition 8,096    
Gross amount carried at close of period      
Land and improvements 1,296    
Buildings and improvements 13,065    
Total 14,361    
Accumulated depreciation $ (11,054)    
Date of construction 1986    
Date acquired Nov-95    
Rental properties:      
Balance at the end of year $ 14,361    
Accumulated depreciation:      
Balance at the end of year $ 11,054    
Unencumbered Apartment Communities | Wandering Creek | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Wandering Creek | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Waterford Place      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 238    
Initial cost      
Land $ 11,808    
Buildings and improvements 24,500    
Costs capitalized subsequent to acquisition 21,004    
Gross amount carried at close of period      
Land and improvements 15,165    
Buildings and improvements 42,147    
Total 57,312    
Accumulated depreciation $ (34,779)    
Date of construction 2000    
Date acquired Jun-00    
Rental properties:      
Balance at the end of year $ 57,312    
Accumulated depreciation:      
Balance at the end of year $ 34,779    
Unencumbered Apartment Communities | Waterford Place | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Waterford Place | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Wharfside Pointe      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 155    
Initial cost      
Land $ 2,245    
Buildings and improvements 7,020    
Costs capitalized subsequent to acquisition 15,087    
Gross amount carried at close of period      
Land and improvements 2,258    
Buildings and improvements 22,094    
Total 24,352    
Accumulated depreciation $ (20,138)    
Date of construction 1990    
Date acquired Jun-94    
Rental properties:      
Balance at the end of year $ 24,352    
Accumulated depreciation:      
Balance at the end of year $ 20,138    
Unencumbered Apartment Communities | Wharfside Pointe | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Wharfside Pointe | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Willow Lake      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 508    
Initial cost      
Land $ 43,194    
Buildings and improvements 101,030    
Costs capitalized subsequent to acquisition 24,146    
Gross amount carried at close of period      
Land and improvements 43,194    
Buildings and improvements 125,176    
Total 168,370    
Accumulated depreciation $ (63,519)    
Date of construction 1989    
Date acquired Oct-12    
Rental properties:      
Balance at the end of year $ 168,370    
Accumulated depreciation:      
Balance at the end of year $ 63,519    
Unencumbered Apartment Communities | Willow Lake | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Willow Lake | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | 5600 Wilshire      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 284    
Initial cost      
Land $ 30,535    
Buildings and improvements 91,604    
Costs capitalized subsequent to acquisition 12,243    
Gross amount carried at close of period      
Land and improvements 30,535    
Buildings and improvements 103,847    
Total 134,382    
Accumulated depreciation $ (44,045)    
Date of construction 2008    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 134,382    
Accumulated depreciation:      
Balance at the end of year $ 44,045    
Unencumbered Apartment Communities | 5600 Wilshire | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | 5600 Wilshire | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Wilshire La Brea      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 478    
Initial cost      
Land $ 56,932    
Buildings and improvements 211,998    
Costs capitalized subsequent to acquisition 25,890    
Gross amount carried at close of period      
Land and improvements 56,932    
Buildings and improvements 237,888    
Total 294,820    
Accumulated depreciation $ (102,009)    
Date of construction 2014    
Date acquired Apr-14    
Rental properties:      
Balance at the end of year $ 294,820    
Accumulated depreciation:      
Balance at the end of year $ 102,009    
Unencumbered Apartment Communities | Wilshire La Brea | Minimum      
Gross amount carried at close of period      
Life used for depreciation 5 years    
Unencumbered Apartment Communities | Wilshire La Brea | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Wilshire Promenade      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 149    
Initial cost      
Land $ 3,118    
Buildings and improvements 7,385    
Costs capitalized subsequent to acquisition 18,073    
Gross amount carried at close of period      
Land and improvements 3,797    
Buildings and improvements 24,779    
Total 28,576    
Accumulated depreciation $ (19,680)    
Date of construction 1992    
Date acquired Jan-97    
Rental properties:      
Balance at the end of year $ 28,576    
Accumulated depreciation:      
Balance at the end of year $ 19,680    
Unencumbered Apartment Communities | Wilshire Promenade | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Wilshire Promenade | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Windsor Court      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 95    
Initial cost      
Land $ 6,383    
Buildings and improvements 23,420    
Costs capitalized subsequent to acquisition 1,602    
Gross amount carried at close of period      
Land and improvements 6,383    
Buildings and improvements 25,022    
Total 31,405    
Accumulated depreciation $ (3,255)    
Date of construction 1987    
Date acquired Jul-22    
Rental properties:      
Balance at the end of year $ 31,405    
Accumulated depreciation:      
Balance at the end of year $ 3,255    
Unencumbered Apartment Communities | Windsor Ridge      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 216    
Initial cost      
Land $ 4,017    
Buildings and improvements 10,315    
Costs capitalized subsequent to acquisition 19,201    
Gross amount carried at close of period      
Land and improvements 4,021    
Buildings and improvements 29,512    
Total 33,533    
Accumulated depreciation $ (28,010)    
Date of construction 1989    
Date acquired Mar-89    
Rental properties:      
Balance at the end of year $ 33,533    
Accumulated depreciation:      
Balance at the end of year $ 28,010    
Unencumbered Apartment Communities | Windsor Ridge | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Windsor Ridge | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Woodland Commons      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 302    
Initial cost      
Land $ 2,040    
Buildings and improvements 8,727    
Costs capitalized subsequent to acquisition 29,289    
Gross amount carried at close of period      
Land and improvements 2,044    
Buildings and improvements 38,012    
Total 40,056    
Accumulated depreciation $ (30,366)    
Date of construction 1978    
Date acquired Mar-90    
Rental properties:      
Balance at the end of year $ 40,056    
Accumulated depreciation:      
Balance at the end of year $ 30,366    
Unencumbered Apartment Communities | Woodland Commons | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Woodland Commons | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Woodside Village      
Real Estate and Accumulated Depreciation [Line Items]      
Apartment Homes | apartment 145    
Initial cost      
Land $ 5,331    
Buildings and improvements 21,036    
Costs capitalized subsequent to acquisition 8,308    
Gross amount carried at close of period      
Land and improvements 5,341    
Buildings and improvements 29,334    
Total 34,675    
Accumulated depreciation $ (20,892)    
Date of construction 1987    
Date acquired Dec-04    
Rental properties:      
Balance at the end of year $ 34,675    
Accumulated depreciation:      
Balance at the end of year $ 20,892    
Unencumbered Apartment Communities | Woodside Village | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Woodside Village | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Essex Skyline | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Essex Skyline | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Fourth & U | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Fourth & U | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | Hillsdale Garden | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | Hillsdale Garden | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Grand | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Grand | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | The Waterford | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | The Waterford | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Unencumbered Apartment Communities | 17461 Derian Ave | Minimum      
Gross amount carried at close of period      
Life used for depreciation 3 years    
Unencumbered Apartment Communities | 17461 Derian Ave | Maximum      
Gross amount carried at close of period      
Life used for depreciation 30 years    
Other Property      
Real Estate and Accumulated Depreciation [Line Items]      
Encumbrance $ 0    
Initial cost      
Land 46,781    
Buildings and improvements 16,585    
Costs capitalized subsequent to acquisition 18,191    
Gross amount carried at close of period      
Land and improvements 48,142    
Buildings and improvements 33,415    
Total 81,557    
Accumulated depreciation (22,994)    
Rental properties:      
Balance at the end of year 81,557    
Accumulated depreciation:      
Balance at the end of year 22,994    
Other Property | Other real estate assets      
Real Estate and Accumulated Depreciation [Line Items]      
Encumbrance 0    
Initial cost      
Land 46,781    
Buildings and improvements 16,585    
Costs capitalized subsequent to acquisition 18,191    
Gross amount carried at close of period      
Land and improvements 48,142    
Buildings and improvements 33,415    
Total 81,557    
Accumulated depreciation (22,994)    
Rental properties:      
Balance at the end of year 81,557    
Accumulated depreciation:      
Balance at the end of year 22,994    
Real Estate Rental Property      
Gross amount carried at close of period      
Total 18,436,585 17,589,518 16,135,223
Rental properties:      
Balance at beginning of year 17,589,518 16,135,223 15,966,227
Balance at the end of year $ 18,436,585 $ 17,589,518 $ 16,135,223