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Schedule III - Real Estate and Accumulated Depreciation (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | [1] | Dec. 31, 2017
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Balance, beginning of period | $ 1,745,640 | [1] | $ 1,504,156 | $ 1,319,350 |
Additions during period: |  |  |  |  |
Acquisitions | 127,908 |  | 270,220 | 241,071 |
Improvements to land and building | 45,623 |  | 41,587 | 14,368 |
Deductions during period: |  |  |  |  |
Dispositions of real estate | (121,865) |  | (69,915) | (70,633) |
Asset write-offs | (941) |  | (408) |  |
Balance, end of period | 1,796,365 |  | 1,745,640 | 1,504,156 | [1]
Balance, beginning of period | 120,202 | [1] | 84,097 | 60,719 |
Depreciation expense | 50,955 |  | 41,652 | 32,586 |
Dispositions of real estate | (11,781) |  | (5,139) | (9,208) |
Asset write-off | (941) |  | (408) |  |
Balance, end of period | 158,435 |  | $ 120,202 | $ 84,097 | [1]
Investment in Real Estate |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Initial Cost, Land | 234,050 |  |  |  |
Initial Cost, Building | 1,453,052 |  |  |  |
Cost of Improvements, net of Retirements | 109,263 |  |  |  |
Gross Carrying Amount, Land | 234,050 |  |  |  |
Accumulated Depreciation- Building | (158,435) |  |  |  |
Encumbrances (Unpaid Principal) | (504,876) |  |  |  |
Investment in Real Estate | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 1,562,315 |  |  |  |
Investment in Real Estate | Crestmont Apartments |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Marietta, GA |  |  |  |
Initial Cost, Land | $ 3,254 |  |  |  |
Initial Cost, Building | 13,017 |  |  |  |
Cost of Improvements, net of Retirements | 5,723 |  |  |  |
Gross Carrying Amount, Land | 3,254 |  |  |  |
Accumulated Depreciation- Building | (5,590) |  |  |  |
Encumbrances (Unpaid Principal) | $ (6,113) |  |  |  |
Year of Acquisition | 2011 |  |  |  |
Investment in Real Estate | Crestmont Apartments | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 18,740 |  |  |  |
Investment in Real Estate | Runaway Bay Apartments |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Indianapolis, IN |  |  |  |
Initial Cost, Land | $ 3,079 |  |  |  |
Initial Cost, Building | 12,318 |  |  |  |
Cost of Improvements, net of Retirements | 1,279 |  |  |  |
Gross Carrying Amount, Land | 3,079 |  |  |  |
Accumulated Depreciation- Building | (2,717) |  |  |  |
Encumbrances (Unpaid Principal) | $ (8,978) |  |  |  |
Year of Acquisition | 2012 |  |  |  |
Investment in Real Estate | Runaway Bay Apartments | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 13,597 |  |  |  |
Investment in Real Estate | Windrush |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Edmond, OK |  |  |  |
Initial Cost, Land | $ 1,677 |  |  |  |
Initial Cost, Building | 7,464 |  |  |  |
Cost of Improvements, net of Retirements | 841 |  |  |  |
Gross Carrying Amount, Land | 1,677 |  |  |  |
Accumulated Depreciation- Building | $ (1,417) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Windrush | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 8,305 |  |  |  |
Investment in Real Estate | Heritage Park |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Oklahoma, OK |  |  |  |
Initial Cost, Land | $ 4,234 |  |  |  |
Initial Cost, Building | 12,232 |  |  |  |
Cost of Improvements, net of Retirements | 2,772 |  |  |  |
Gross Carrying Amount, Land | 4,234 |  |  |  |
Accumulated Depreciation- Building | $ (2,816) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Heritage Park | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 15,004 |  |  |  |
Investment in Real Estate | Raindance |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Oklahoma, OK |  |  |  |
Initial Cost, Land | $ 3,503 |  |  |  |
Initial Cost, Building | 10,051 |  |  |  |
Cost of Improvements, net of Retirements | 2,127 |  |  |  |
Gross Carrying Amount, Land | 3,503 |  |  |  |
Accumulated Depreciation- Building | $ (2,267) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Raindance | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 12,178 |  |  |  |
Investment in Real Estate | Augusta |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Oklahoma, OK |  |  |  |
Initial Cost, Land | $ 1,296 |  |  |  |
Initial Cost, Building | 9,930 |  |  |  |
Cost of Improvements, net of Retirements | 1,127 |  |  |  |
Gross Carrying Amount, Land | 1,296 |  |  |  |
Accumulated Depreciation- Building | $ (1,878) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Augusta | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 11,057 |  |  |  |
Investment in Real Estate | Invitational |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Oklahoma, OK |  |  |  |
Initial Cost, Land | $ 1,924 |  |  |  |
Initial Cost, Building | 16,852 |  |  |  |
Cost of Improvements, net of Retirements | 2,012 |  |  |  |
Gross Carrying Amount, Land | 1,924 |  |  |  |
Accumulated Depreciation- Building | $ (3,048) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Invitational | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 18,864 |  |  |  |
Investment in Real Estate | Kings Landing |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Creve Coeur, MO |  |  |  |
Initial Cost, Land | $ 2,513 |  |  |  |
Initial Cost, Building | 29,873 |  |  |  |
Cost of Improvements, net of Retirements | 1,193 |  |  |  |
Gross Carrying Amount, Land | 2,513 |  |  |  |
Accumulated Depreciation- Building | (4,728) |  |  |  |
Encumbrances (Unpaid Principal) | $ (20,263) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Kings Landing | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 31,066 |  |  |  |
Investment in Real Estate | Walnut Hill |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Cordova, TN |  |  |  |
Initial Cost, Land | $ 2,230 |  |  |  |
Initial Cost, Building | 25,251 |  |  |  |
Cost of Improvements, net of Retirements | 1,632 |  |  |  |
Gross Carrying Amount, Land | 2,230 |  |  |  |
Accumulated Depreciation- Building | (4,101) |  |  |  |
Encumbrances (Unpaid Principal) | $ (18,650) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Walnut Hill | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 26,883 |  |  |  |
Investment in Real Estate | Lenoxplace |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Raleigh, NC |  |  |  |
Initial Cost, Land | $ 3,480 |  |  |  |
Initial Cost, Building | 20,482 |  |  |  |
Cost of Improvements, net of Retirements | 1,156 |  |  |  |
Gross Carrying Amount, Land | 3,480 |  |  |  |
Accumulated Depreciation- Building | (3,158) |  |  |  |
Encumbrances (Unpaid Principal) | $ (15,991) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Lenoxplace | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 21,638 |  |  |  |
Investment in Real Estate | Stonebridge Crossing |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Memphis, TN |  |  |  |
Initial Cost, Land | $ 3,100 |  |  |  |
Initial Cost, Building | 26,223 |  |  |  |
Cost of Improvements, net of Retirements | 6,429 |  |  |  |
Gross Carrying Amount, Land | 3,100 |  |  |  |
Accumulated Depreciation- Building | (4,941) |  |  |  |
Encumbrances (Unpaid Principal) | $ (19,370) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Stonebridge Crossing | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 32,652 |  |  |  |
Investment in Real Estate | Bennington Pond |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Groveport, OH |  |  |  |
Initial Cost, Land | $ 2,400 |  |  |  |
Initial Cost, Building | 14,828 |  |  |  |
Cost of Improvements, net of Retirements | 1,290 |  |  |  |
Gross Carrying Amount, Land | 2,400 |  |  |  |
Accumulated Depreciation- Building | (2,506) |  |  |  |
Encumbrances (Unpaid Principal) | $ (11,375) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Bennington Pond | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 16,118 |  |  |  |
Investment in Real Estate | Prospect Park |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Louisville, KY |  |  |  |
Initial Cost, Land | $ 2,837 |  |  |  |
Initial Cost, Building | 11,193 |  |  |  |
Cost of Improvements, net of Retirements | 828 |  |  |  |
Gross Carrying Amount, Land | 2,837 |  |  |  |
Accumulated Depreciation- Building | (1,662) |  |  |  |
Encumbrances (Unpaid Principal) | $ (9,230) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Prospect Park | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 12,021 |  |  |  |
Investment in Real Estate | Brookside |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Louisville, KY |  |  |  |
Initial Cost, Land | $ 3,947 |  |  |  |
Initial Cost, Building | 16,503 |  |  |  |
Cost of Improvements, net of Retirements | 1,134 |  |  |  |
Gross Carrying Amount, Land | 3,947 |  |  |  |
Accumulated Depreciation- Building | (2,490) |  |  |  |
Encumbrances (Unpaid Principal) | $ (13,455) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Brookside | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 17,637 |  |  |  |
Investment in Real Estate | Jamestown |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Louisville, KY |  |  |  |
Initial Cost, Land | $ 7,034 |  |  |  |
Initial Cost, Building | 27,730 |  |  |  |
Cost of Improvements, net of Retirements | 10,029 |  |  |  |
Gross Carrying Amount, Land | 7,034 |  |  |  |
Accumulated Depreciation- Building | (6,205) |  |  |  |
Encumbrances (Unpaid Principal) | $ (22,880) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Jamestown | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 37,759 |  |  |  |
Investment in Real Estate | Oxmoor |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Louisville, KY |  |  |  |
Initial Cost, Land | $ 7,411 |  |  |  |
Initial Cost, Building | 47,095 |  |  |  |
Cost of Improvements, net of Retirements | 7,820 |  |  |  |
Gross Carrying Amount, Land | 7,411 |  |  |  |
Accumulated Depreciation- Building | (7,634) |  |  |  |
Encumbrances (Unpaid Principal) | $ (35,815) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Oxmoor | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 54,915 |  |  |  |
Investment in Real Estate | Meadows |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Louisville, KY |  |  |  |
Initial Cost, Land | $ 6,857 |  |  |  |
Initial Cost, Building | 30,030 |  |  |  |
Cost of Improvements, net of Retirements | 2,410 |  |  |  |
Gross Carrying Amount, Land | 6,857 |  |  |  |
Accumulated Depreciation- Building | (4,590) |  |  |  |
Encumbrances (Unpaid Principal) | $ (24,245) |  |  |  |
Year of Acquisition | 2014 |  |  |  |
Investment in Real Estate | Meadows | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 32,440 |  |  |  |
Investment in Real Estate | Bayview Club |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Indianapolis, IN |  |  |  |
Initial Cost, Land | $ 2,525 |  |  |  |
Initial Cost, Building | 22,506 |  |  |  |
Cost of Improvements, net of Retirements | 1,743 |  |  |  |
Gross Carrying Amount, Land | 2,525 |  |  |  |
Accumulated Depreciation- Building | $ (3,222) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Bayview Club | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 24,249 |  |  |  |
Investment in Real Estate | Arbors River Oaks |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Memphis, TN |  |  |  |
Initial Cost, Land | $ 2,100 |  |  |  |
Initial Cost, Building | 19,045 |  |  |  |
Cost of Improvements, net of Retirements | 2,794 |  |  |  |
Gross Carrying Amount, Land | 2,100 |  |  |  |
Accumulated Depreciation- Building | $ (2,764) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Arbors River Oaks | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 21,839 |  |  |  |
Investment in Real Estate | Aston |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Wake Forest, NC |  |  |  |
Initial Cost, Land | $ 3,450 |  |  |  |
Initial Cost, Building | 34,333 |  |  |  |
Cost of Improvements, net of Retirements | 702 |  |  |  |
Gross Carrying Amount, Land | 3,450 |  |  |  |
Accumulated Depreciation- Building | (3,851) |  |  |  |
Encumbrances (Unpaid Principal) | $ (25,050) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Aston | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 35,035 |  |  |  |
Investment in Real Estate | Avenues At Craig Ranch |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | McKinney, TX |  |  |  |
Initial Cost, Land | $ 5,500 |  |  |  |
Initial Cost, Building | 42,054 |  |  |  |
Cost of Improvements, net of Retirements | 806 |  |  |  |
Gross Carrying Amount, Land | 5,500 |  |  |  |
Accumulated Depreciation- Building | (4,712) |  |  |  |
Encumbrances (Unpaid Principal) | $ (30,941) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Avenues At Craig Ranch | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 42,860 |  |  |  |
Investment in Real Estate | Bridge Pointe |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Huntsville, AL |  |  |  |
Initial Cost, Land | $ 1,500 |  |  |  |
Initial Cost, Building | 14,306 |  |  |  |
Cost of Improvements, net of Retirements | 665 |  |  |  |
Gross Carrying Amount, Land | 1,500 |  |  |  |
Accumulated Depreciation- Building | $ (1,753) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Bridge Pointe | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 14,971 |  |  |  |
Investment in Real Estate | Creekstone At R T P |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Durham, NC |  |  |  |
Initial Cost, Land | $ 5,376 |  |  |  |
Initial Cost, Building | 32,727 |  |  |  |
Cost of Improvements, net of Retirements | 627 |  |  |  |
Gross Carrying Amount, Land | 5,376 |  |  |  |
Accumulated Depreciation- Building | (3,680) |  |  |  |
Encumbrances (Unpaid Principal) | $ (21,713) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Creekstone At R T P | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 33,354 |  |  |  |
Investment in Real Estate | Fountains Southend |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Charlotte, NC |  |  |  |
Initial Cost, Land | $ 4,368 |  |  |  |
Initial Cost, Building | 37,254 |  |  |  |
Cost of Improvements, net of Retirements | 554 |  |  |  |
Gross Carrying Amount, Land | 4,368 |  |  |  |
Accumulated Depreciation- Building | (4,097) |  |  |  |
Encumbrances (Unpaid Principal) | $ (22,582) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Fountains Southend | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 37,808 |  |  |  |
Investment in Real Estate | Fox Trails |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Plano, TX |  |  |  |
Initial Cost, Land | $ 5,700 |  |  |  |
Initial Cost, Building | 21,944 |  |  |  |
Cost of Improvements, net of Retirements | 2,398 |  |  |  |
Gross Carrying Amount, Land | 5,700 |  |  |  |
Accumulated Depreciation- Building | $ (2,946) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Fox Trails | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 24,342 |  |  |  |
Investment in Real Estate | Lakeshore on the Hill |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Chattanooga, TN |  |  |  |
Initial Cost, Land | $ 925 |  |  |  |
Initial Cost, Building | 10,212 |  |  |  |
Cost of Improvements, net of Retirements | 949 |  |  |  |
Gross Carrying Amount, Land | 925 |  |  |  |
Accumulated Depreciation- Building | $ (1,342) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Lakeshore on the Hill | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 11,161 |  |  |  |
Investment in Real Estate | Millenia 700 |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Orlando, FL |  |  |  |
Initial Cost, Land | $ 5,500 |  |  |  |
Initial Cost, Building | 41,752 |  |  |  |
Cost of Improvements, net of Retirements | 1,478 |  |  |  |
Gross Carrying Amount, Land | 5,500 |  |  |  |
Accumulated Depreciation- Building | (4,803) |  |  |  |
Encumbrances (Unpaid Principal) | $ (28,252) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Millenia 700 | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 43,230 |  |  |  |
Investment in Real Estate | Miller Creek At German Town |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Memphis, TN |  |  |  |
Initial Cost, Land | $ 3,300 |  |  |  |
Initial Cost, Building | 53,504 |  |  |  |
Cost of Improvements, net of Retirements | 537 |  |  |  |
Gross Carrying Amount, Land | 3,300 |  |  |  |
Accumulated Depreciation- Building | $ (5,863) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Miller Creek At German Town | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 54,041 |  |  |  |
Investment in Real Estate | Pointe At Canyon Ridge |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Atlanta, GA |  |  |  |
Initial Cost, Land | $ 11,100 |  |  |  |
Initial Cost, Building | 36,995 |  |  |  |
Cost of Improvements, net of Retirements | 7,091 |  |  |  |
Gross Carrying Amount, Land | 11,100 |  |  |  |
Accumulated Depreciation- Building | $ (5,945) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Pointe At Canyon Ridge | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 44,086 |  |  |  |
Investment in Real Estate | St James At Goose Creek |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Goose Creek, SC |  |  |  |
Initial Cost, Land | $ 3,780 |  |  |  |
Initial Cost, Building | 27,695 |  |  |  |
Cost of Improvements, net of Retirements | 874 |  |  |  |
Gross Carrying Amount, Land | 3,780 |  |  |  |
Accumulated Depreciation- Building | $ (3,288) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | St James At Goose Creek | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 28,569 |  |  |  |
Investment in Real Estate | Talison Row At Daniel Island |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Daniel Island, SC |  |  |  |
Initial Cost, Land | $ 5,480 |  |  |  |
Initial Cost, Building | 41,409 |  |  |  |
Cost of Improvements, net of Retirements | 686 |  |  |  |
Gross Carrying Amount, Land | 5,480 |  |  |  |
Accumulated Depreciation- Building | (4,642) |  |  |  |
Encumbrances (Unpaid Principal) | $ (31,640) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Talison Row At Daniel Island | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 42,095 |  |  |  |
Investment in Real Estate | Trails At Signal Mountain |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Chattanooga, TN |  |  |  |
Initial Cost, Land | $ 1,200 |  |  |  |
Initial Cost, Building | 12,895 |  |  |  |
Cost of Improvements, net of Retirements | 1,126 |  |  |  |
Gross Carrying Amount, Land | 1,200 |  |  |  |
Accumulated Depreciation- Building | $ (1,678) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Trails At Signal Mountain | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 14,021 |  |  |  |
Investment in Real Estate | Vue At Knoll Trail |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Dallas, TX |  |  |  |
Initial Cost, Land | $ 3,100 |  |  |  |
Initial Cost, Building | 6,077 |  |  |  |
Cost of Improvements, net of Retirements | 357 |  |  |  |
Gross Carrying Amount, Land | 3,100 |  |  |  |
Accumulated Depreciation- Building | $ (780) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Vue At Knoll Trail | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 6,434 |  |  |  |
Investment in Real Estate | Waterstone at Brier Creek |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Raleigh, NC |  |  |  |
Initial Cost, Land | $ 4,200 |  |  |  |
Initial Cost, Building | 34,651 |  |  |  |
Cost of Improvements, net of Retirements | 546 |  |  |  |
Gross Carrying Amount, Land | 4,200 |  |  |  |
Accumulated Depreciation- Building | (3,843) |  |  |  |
Encumbrances (Unpaid Principal) | $ (16,040) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Waterstone at Brier Creek | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 35,197 |  |  |  |
Investment in Real Estate | Waterstone Big Creek |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Alpharetta, GA |  |  |  |
Initial Cost, Land | $ 7,600 |  |  |  |
Initial Cost, Building | 61,971 |  |  |  |
Cost of Improvements, net of Retirements | 519 |  |  |  |
Gross Carrying Amount, Land | 7,600 |  |  |  |
Accumulated Depreciation- Building | (6,739) |  |  |  |
Encumbrances (Unpaid Principal) | $ (49,224) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Waterstone Big Creek | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 62,490 |  |  |  |
Investment in Real Estate | Westmont Commons |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Asheville, NC |  |  |  |
Initial Cost, Land | $ 2,750 |  |  |  |
Initial Cost, Building | 25,225 |  |  |  |
Cost of Improvements, net of Retirements | 682 |  |  |  |
Gross Carrying Amount, Land | 2,750 |  |  |  |
Accumulated Depreciation- Building | $ (2,957) |  |  |  |
Year of Acquisition | 2015 |  |  |  |
Investment in Real Estate | Westmont Commons | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 25,907 |  |  |  |
Investment in Real Estate | Lakes at Northdale |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Tampa, FL |  |  |  |
Initial Cost, Land | $ 3,898 |  |  |  |
Initial Cost, Building | 25,543 |  |  |  |
Cost of Improvements, net of Retirements | 1,006 |  |  |  |
Gross Carrying Amount, Land | 3,898 |  |  |  |
Accumulated Depreciation- Building | $ (2,056) |  |  |  |
Year of Acquisition | 2017 |  |  |  |
Investment in Real Estate | Lakes at Northdale | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 26,549 |  |  |  |
Investment in Real Estate | Haverford Place |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Lexington, KY |  |  |  |
Initial Cost, Land | $ 3,927 |  |  |  |
Initial Cost, Building | 10,100 |  |  |  |
Cost of Improvements, net of Retirements | 1,412 |  |  |  |
Gross Carrying Amount, Land | 3,927 |  |  |  |
Accumulated Depreciation- Building | $ (1,022) |  |  |  |
Year of Acquisition | 2017 |  |  |  |
Investment in Real Estate | Haverford Place | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 11,512 |  |  |  |
Investment in Real Estate | South Terrace |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Durham, NC |  |  |  |
Initial Cost, Land | $ 5,621 |  |  |  |
Initial Cost, Building | 36,923 |  |  |  |
Cost of Improvements, net of Retirements | 6,715 |  |  |  |
Gross Carrying Amount, Land | 5,621 |  |  |  |
Accumulated Depreciation- Building | $ (3,788) |  |  |  |
Year of Acquisition | 2017 |  |  |  |
Investment in Real Estate | South Terrace | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 43,638 |  |  |  |
Investment in Real Estate | Cherry Grove |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | North Myrtle Beach, SC |  |  |  |
Initial Cost, Land | $ 550 |  |  |  |
Initial Cost, Building | 15,369 |  |  |  |
Cost of Improvements, net of Retirements | 996 |  |  |  |
Gross Carrying Amount, Land | 550 |  |  |  |
Accumulated Depreciation- Building | $ (1,099) |  |  |  |
Year of Acquisition | 2017 |  |  |  |
Investment in Real Estate | Cherry Grove | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 16,365 |  |  |  |
Investment in Real Estate | Kensington Commons |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Canal Winchester, OH |  |  |  |
Initial Cost, Land | $ 3,400 |  |  |  |
Initial Cost, Building | 20,703 |  |  |  |
Cost of Improvements, net of Retirements | 2,337 |  |  |  |
Gross Carrying Amount, Land | 3,400 |  |  |  |
Accumulated Depreciation- Building | $ (1,496) |  |  |  |
Year of Acquisition | 2017 |  |  |  |
Investment in Real Estate | Kensington Commons | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 23,040 |  |  |  |
Investment in Real Estate | Schirm Farms |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Canal Winchester, OH |  |  |  |
Initial Cost, Land | $ 3,960 |  |  |  |
Initial Cost, Building | 19,488 |  |  |  |
Cost of Improvements, net of Retirements | 2,359 |  |  |  |
Gross Carrying Amount, Land | 3,960 |  |  |  |
Accumulated Depreciation- Building | $ (1,468) |  |  |  |
Year of Acquisition | 2017 |  |  |  |
Investment in Real Estate | Schirm Farms | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 21,847 |  |  |  |
Investment in Real Estate | Riverchase |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Indianapolis, IN |  |  |  |
Initial Cost, Land | $ 1,460 |  |  |  |
Initial Cost, Building | 17,250 |  |  |  |
Cost of Improvements, net of Retirements | 794 |  |  |  |
Gross Carrying Amount, Land | 1,460 |  |  |  |
Accumulated Depreciation- Building | $ (1,107) |  |  |  |
Year of Acquisition | 2017 |  |  |  |
Investment in Real Estate | Riverchase | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 18,044 |  |  |  |
Investment in Real Estate | Live Oak Trace |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Baton Rouge, LA |  |  |  |
Initial Cost, Land | $ 1,060 |  |  |  |
Initial Cost, Building | 27,362 |  |  |  |
Cost of Improvements, net of Retirements | 444 |  |  |  |
Gross Carrying Amount, Land | 1,060 |  |  |  |
Accumulated Depreciation- Building | $ (1,548) |  |  |  |
Year of Acquisition | 2017 |  |  |  |
Investment in Real Estate | Live Oak Trace | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 27,806 |  |  |  |
Investment in Real Estate | Tides at Calabash |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Wilmington, NC |  |  |  |
Initial Cost, Land | $ 1,880 |  |  |  |
Initial Cost, Building | 12,214 |  |  |  |
Cost of Improvements, net of Retirements | 436 |  |  |  |
Gross Carrying Amount, Land | 1,880 |  |  |  |
Accumulated Depreciation- Building | $ (722) |  |  |  |
Year of Acquisition | 2017 |  |  |  |
Investment in Real Estate | Tides at Calabash | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 12,650 |  |  |  |
Investment in Real Estate | Brunswick Point |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Wilmington, NC |  |  |  |
Initial Cost, Land | $ 2,150 |  |  |  |
Initial Cost, Building | 28,214 |  |  |  |
Cost of Improvements, net of Retirements | 1,819 |  |  |  |
Gross Carrying Amount, Land | 2,150 |  |  |  |
Accumulated Depreciation- Building | (1,709) |  |  |  |
Encumbrances (Unpaid Principal) | $ (18,828) |  |  |  |
Year of Acquisition | 2017 |  |  |  |
Investment in Real Estate | Brunswick Point | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 30,033 |  |  |  |
Investment in Real Estate | Creekside Corners |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Lithonia, GA |  |  |  |
Initial Cost, Land | $ 6,140 |  |  |  |
Initial Cost, Building | 37,285 |  |  |  |
Cost of Improvements, net of Retirements | 4,486 |  |  |  |
Gross Carrying Amount, Land | 6,140 |  |  |  |
Accumulated Depreciation- Building | (2,504) |  |  |  |
Encumbrances (Unpaid Principal) | $ (23,169) |  |  |  |
Year of Acquisition | 2018 |  |  |  |
Investment in Real Estate | Creekside Corners | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 41,771 |  |  |  |
Investment in Real Estate | Hartshire Lakes |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Bargersville, IN |  |  |  |
Initial Cost, Land | $ 3,070 |  |  |  |
Initial Cost, Building | 24,210 |  |  |  |
Cost of Improvements, net of Retirements | 960 |  |  |  |
Gross Carrying Amount, Land | 3,070 |  |  |  |
Accumulated Depreciation- Building | (1,310) |  |  |  |
Encumbrances (Unpaid Principal) | $ (15,780) |  |  |  |
Year of Acquisition | 2018 |  |  |  |
Investment in Real Estate | Hartshire Lakes | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 25,170 |  |  |  |
Investment in Real Estate | The Chelsea |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Columbus, OH |  |  |  |
Initial Cost, Land | $ 2,739 |  |  |  |
Initial Cost, Building | 33,698 |  |  |  |
Cost of Improvements, net of Retirements | 450 |  |  |  |
Gross Carrying Amount, Land | 2,739 |  |  |  |
Accumulated Depreciation- Building | $ (1,679) |  |  |  |
Year of Acquisition | 2018 |  |  |  |
Investment in Real Estate | The Chelsea | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 34,148 |  |  |  |
Investment in Real Estate | Avalon Oaks |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Columbus, OH |  |  |  |
Initial Cost, Land | $ 4,189 |  |  |  |
Initial Cost, Building | 18,301 |  |  |  |
Cost of Improvements, net of Retirements | 1,306 |  |  |  |
Gross Carrying Amount, Land | 4,189 |  |  |  |
Accumulated Depreciation- Building | $ (1,014) |  |  |  |
Year of Acquisition | 2018 |  |  |  |
Investment in Real Estate | Avalon Oaks | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 19,607 |  |  |  |
Investment in Real Estate | Bridgeview |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Tampa, FL |  |  |  |
Initial Cost, Land | $ 10,671 |  |  |  |
Initial Cost, Building | 31,953 |  |  |  |
Cost of Improvements, net of Retirements | 4,611 |  |  |  |
Gross Carrying Amount, Land | 10,671 |  |  |  |
Accumulated Depreciation- Building | $ (1,415) |  |  |  |
Year of Acquisition | 2018 |  |  |  |
Investment in Real Estate | Bridgeview | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 36,564 |  |  |  |
Investment in Real Estate | Collier Park |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Grove City, OH |  |  |  |
Initial Cost, Land | $ 2,325 |  |  |  |
Initial Cost, Building | 18,688 |  |  |  |
Cost of Improvements, net of Retirements | 543 |  |  |  |
Gross Carrying Amount, Land | 2,325 |  |  |  |
Accumulated Depreciation- Building | $ (719) |  |  |  |
Year of Acquisition | 2018 |  |  |  |
Investment in Real Estate | Collier Park | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 19,231 |  |  |  |
Investment in Real Estate | Waterford Landing |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | McDonough, GA |  |  |  |
Initial Cost, Land | $ 2,867 |  |  |  |
Initial Cost, Building | 27,477 |  |  |  |
Cost of Improvements, net of Retirements | 982 |  |  |  |
Gross Carrying Amount, Land | 2,867 |  |  |  |
Accumulated Depreciation- Building | (867) |  |  |  |
Encumbrances (Unpaid Principal) | $ (15,292) |  |  |  |
Year of Acquisition | 2018 |  |  |  |
Investment in Real Estate | Waterford Landing | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 28,459 |  |  |  |
Investment in Real Estate | Lucerne |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Brandon, FL |  |  |  |
Initial Cost, Land | $ 3,114 |  |  |  |
Initial Cost, Building | 43,540 |  |  |  |
Cost of Improvements, net of Retirements | 1,981 |  |  |  |
Gross Carrying Amount, Land | 3,114 |  |  |  |
Accumulated Depreciation- Building | $ (1,328) |  |  |  |
Year of Acquisition | 2018 |  |  |  |
Investment in Real Estate | Lucerne | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 45,521 |  |  |  |
Investment in Real Estate | North Park |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Stockbridge, GA |  |  |  |
Initial Cost, Land | $ 2,848 |  |  |  |
Initial Cost, Building | 24,933 |  |  |  |
Cost of Improvements, net of Retirements | 521 |  |  |  |
Gross Carrying Amount, Land | 2,848 |  |  |  |
Accumulated Depreciation- Building | $ (427) |  |  |  |
Year of Acquisition | 2019 |  |  |  |
Investment in Real Estate | North Park | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 25,454 |  |  |  |
Investment in Real Estate | Rocky Creek |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Tampa, FL |  |  |  |
Initial Cost, Land | $ 15,669 |  |  |  |
Initial Cost, Building | 31,979 |  |  |  |
Cost of Improvements, net of Retirements | 119 |  |  |  |
Gross Carrying Amount, Land | 15,669 |  |  |  |
Accumulated Depreciation- Building | $ (336) |  |  |  |
Year of Acquisition | 2019 |  |  |  |
Investment in Real Estate | Rocky Creek | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 32,098 |  |  |  |
Investment in Real Estate | Thornhill |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Location | Raleigh, NC |  |  |  |
Initial Cost, Land | $ 12,282 |  |  |  |
Initial Cost, Building | 40,197 |  |  |  |
Cost of Improvements, net of Retirements | 48 |  |  |  |
Gross Carrying Amount, Land | 12,282 |  |  |  |
Accumulated Depreciation- Building | $ (168) |  |  |  |
Year of Acquisition | 2019 |  |  |  |
Investment in Real Estate | Thornhill | Building |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Gross Carrying Amount, Building | $ 40,245 |  |  |  |
[1] | Includes properties classified as held for sale as of December 31, 2018.

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