Real Estate Investments - Summary of Major Components of Investments in Multifamily Properties (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017 |
Real Estate Properties [Line Items] | | |
Land | $ 189,615 | $ 189,615 |
Buildings and improvements | 811,696 | 806,981 |
Intangible lease assets | | 1,340 |
Construction in progress | 5,113 | 3,786 |
Furniture, fixtures, and equipment | 51,644 | 44,725 |
Real estate investment, gross | 1,058,068 | 1,046,447 |
Accumulated depreciation and amortization | (109,189) | (88,252) |
Total Net Operating Real Estate Investments | 948,879 | 958,195 |
Accumulated depreciation and amortization | (897) | (3,397) |
Total Net Real Estate Investments | 966,174 | 991,156 |
Multifamily Properties | | |
Real Estate Properties [Line Items] | | |
Accumulated depreciation and amortization | (897) | (3,397) |
Total Net Real Estate Investments | 966,174 | 991,156 |
Multifamily Properties | Intangible Lease Assets | | |
Real Estate Properties [Line Items] | | |
Total Net Real Estate Investments | | 843 |
Multifamily Properties | Land | | |
Real Estate Properties [Line Items] | | |
Total Net Real Estate Investments | 195,735 | 198,245 |
Multifamily Properties | Buildings and Improvements | | |
Real Estate Properties [Line Items] | | |
Accumulated depreciation and amortization | (736) | (2,630) |
Total Net Real Estate Investments | 742,807 | 765,307 |
Multifamily Properties | Construction in Progress | | |
Real Estate Properties [Line Items] | | |
Total Net Real Estate Investments | 5,113 | 3,786 |
Multifamily Properties | Furniture, Fixtures, and Equipment | | |
Real Estate Properties [Line Items] | | |
Accumulated depreciation and amortization | (161) | (767) |
Total Net Real Estate Investments | 22,519 | 22,975 |
Multifamily Properties | Held For Sale Properties | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | | 36,358 |
Total Net Operating Real Estate Investments | 17,295 | 32,961 |
Multifamily Properties | Held For Sale Properties | Land | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | | 8,630 |
Total Net Operating Real Estate Investments | 6,120 | 8,630 |
Multifamily Properties | Held For Sale Properties | Buildings and Improvements | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | | 25,972 |
Total Net Operating Real Estate Investments | 10,581 | 23,342 |
Multifamily Properties | Held For Sale Properties | Furniture, Fixtures, and Equipment | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | | 1,756 |
Total Net Operating Real Estate Investments | 594 | 989 |
Multifamily Properties | Arbors on Forest Ridge | | |
Real Estate Properties [Line Items] | | |
Land | 2,330 | 2,330 |
Buildings and improvements | 11,195 | 11,089 |
Furniture, fixtures, and equipment | 954 | 829 |
Real estate investment, gross | 14,479 | 14,248 |
Multifamily Properties | Cutter's Point | | |
Real Estate Properties [Line Items] | | |
Land | 3,330 | 3,330 |
Buildings and improvements | 13,169 | 13,030 |
Construction in progress | 42 | |
Furniture, fixtures, and equipment | 1,189 | 1,080 |
Real estate investment, gross | 17,730 | 17,440 |
Multifamily Properties | Eagle Crest | | |
Real Estate Properties [Line Items] | | |
Land | 5,450 | 5,450 |
Buildings and improvements | 22,012 | 22,346 |
Furniture, fixtures, and equipment | 1,398 | 1,299 |
Real estate investment, gross | 28,860 | 29,095 |
Multifamily Properties | Silverbrook | | |
Real Estate Properties [Line Items] | | |
Land | 4,860 | 4,860 |
Buildings and improvements | 25,971 | 25,665 |
Furniture, fixtures, and equipment | 2,772 | 2,509 |
Real estate investment, gross | 33,603 | 33,034 |
Multifamily Properties | Edgewater at Sandy Springs | | |
Real Estate Properties [Line Items] | | |
Land | 14,290 | 14,290 |
Buildings and improvements | 44,077 | 44,004 |
Furniture, fixtures, and equipment | 4,680 | 4,291 |
Real estate investment, gross | 63,047 | 62,585 |
Multifamily Properties | Beechwood Terrace | | |
Real Estate Properties [Line Items] | | |
Land | 1,390 | 1,390 |
Buildings and improvements | 20,883 | 20,729 |
Construction in progress | 70 | |
Furniture, fixtures, and equipment | 1,540 | 1,271 |
Real estate investment, gross | 23,883 | 23,390 |
Multifamily Properties | Willow Grove | | |
Real Estate Properties [Line Items] | | |
Land | 3,940 | 3,940 |
Buildings and improvements | 10,812 | 10,766 |
Furniture, fixtures, and equipment | 1,133 | 942 |
Real estate investment, gross | 15,885 | 15,648 |
Multifamily Properties | Woodbridge | | |
Real Estate Properties [Line Items] | | |
Land | 3,650 | 3,650 |
Buildings and improvements | 13,088 | 13,031 |
Furniture, fixtures, and equipment | 1,353 | 1,093 |
Real estate investment, gross | 18,091 | 17,774 |
Multifamily Properties | Abbington Heights | | |
Real Estate Properties [Line Items] | | |
Land | 1,770 | 1,770 |
Buildings and improvements | 17,091 | 16,796 |
Furniture, fixtures, and equipment | 1,364 | 1,171 |
Real estate investment, gross | 20,225 | 19,737 |
Multifamily Properties | The Summit at Sabal Park | | |
Real Estate Properties [Line Items] | | |
Land | 5,770 | 5,770 |
Buildings and improvements | 13,424 | 13,377 |
Furniture, fixtures, and equipment | 1,207 | 1,136 |
Real estate investment, gross | 20,401 | 20,283 |
Multifamily Properties | Courtney Cove | | |
Real Estate Properties [Line Items] | | |
Land | 5,880 | 5,880 |
Buildings and improvements | 12,979 | 12,961 |
Construction in progress | | 2 |
Furniture, fixtures, and equipment | 1,140 | 1,096 |
Real estate investment, gross | 19,999 | 19,939 |
Multifamily Properties | Radbourne Lake | | |
Real Estate Properties [Line Items] | | |
Land | 2,440 | 2,440 |
Buildings and improvements | 22,036 | 21,924 |
Furniture, fixtures, and equipment | 1,434 | 1,300 |
Real estate investment, gross | 25,910 | 25,664 |
Multifamily Properties | Timber Creek | | |
Real Estate Properties [Line Items] | | |
Land | 11,260 | 11,260 |
Buildings and improvements | 13,540 | 13,479 |
Furniture, fixtures, and equipment | 1,279 | 1,158 |
Real estate investment, gross | 26,079 | 25,897 |
Multifamily Properties | Belmont at Duck Creek | | |
Real Estate Properties [Line Items] | | |
Land | 1,910 | 1,910 |
Buildings and improvements | 17,309 | 17,190 |
Construction in progress | 7 | |
Furniture, fixtures, and equipment | 1,298 | 1,216 |
Real estate investment, gross | 20,524 | 20,316 |
Multifamily Properties | Sabal Palm at Lake Buena Vista | | |
Real Estate Properties [Line Items] | | |
Land | 7,580 | 7,580 |
Buildings and improvements | 41,268 | 41,229 |
Construction in progress | | 1 |
Furniture, fixtures, and equipment | 1,157 | 1,064 |
Real estate investment, gross | 50,005 | 49,874 |
Multifamily Properties | Cornerstone | | |
Real Estate Properties [Line Items] | | |
Land | 1,500 | 1,500 |
Buildings and improvements | 30,500 | 30,452 |
Construction in progress | | 17 |
Furniture, fixtures, and equipment | 1,670 | 1,487 |
Real estate investment, gross | 33,670 | 33,456 |
Multifamily Properties | The Preserve at Terrell Mill | | |
Real Estate Properties [Line Items] | | |
Land | 10,170 | 10,170 |
Buildings and improvements | 48,740 | 48,630 |
Construction in progress | | 32 |
Furniture, fixtures, and equipment | 4,437 | 4,074 |
Real estate investment, gross | 63,347 | 62,906 |
Multifamily Properties | The Ashlar | | |
Real Estate Properties [Line Items] | | |
Land | 4,090 | 4,090 |
Buildings and improvements | 12,789 | 12,640 |
Furniture, fixtures, and equipment | 1,763 | 1,575 |
Real estate investment, gross | 18,642 | 18,305 |
Multifamily Properties | Heatherstone | | |
Real Estate Properties [Line Items] | | |
Land | 2,320 | 2,320 |
Buildings and improvements | 8,090 | 7,868 |
Construction in progress | | 36 |
Furniture, fixtures, and equipment | 1,105 | 1,000 |
Real estate investment, gross | 11,515 | 11,224 |
Multifamily Properties | Versailles | | |
Real Estate Properties [Line Items] | | |
Land | 6,720 | 6,720 |
Buildings and improvements | 20,004 | 19,798 |
Construction in progress | 1,322 | 914 |
Furniture, fixtures, and equipment | 2,768 | 2,365 |
Real estate investment, gross | 30,814 | 29,797 |
Multifamily Properties | Seasons 704 Apartments | | |
Real Estate Properties [Line Items] | | |
Land | 7,480 | 7,480 |
Buildings and improvements | 14,215 | 14,079 |
Furniture, fixtures, and equipment | 1,162 | 1,009 |
Real estate investment, gross | 22,857 | 22,568 |
Multifamily Properties | Madera Point | | |
Real Estate Properties [Line Items] | | |
Land | 4,920 | 4,920 |
Buildings and improvements | 17,564 | 17,481 |
Construction in progress | | 9 |
Furniture, fixtures, and equipment | 1,293 | 1,188 |
Real estate investment, gross | 23,777 | 23,598 |
Multifamily Properties | The Pointe at the Foothills | | |
Real Estate Properties [Line Items] | | |
Land | 4,840 | 4,840 |
Buildings and improvements | 46,931 | 46,723 |
Construction in progress | | 142 |
Furniture, fixtures, and equipment | 1,874 | 1,739 |
Real estate investment, gross | 53,645 | 53,444 |
Multifamily Properties | Venue at 8651 | | |
Real Estate Properties [Line Items] | | |
Land | 2,350 | 2,350 |
Buildings and improvements | 17,958 | 17,625 |
Construction in progress | 42 | 300 |
Furniture, fixtures, and equipment | 2,206 | 1,835 |
Real estate investment, gross | 22,556 | 22,110 |
Multifamily Properties | Parc500 | | |
Real Estate Properties [Line Items] | | |
Land | 3,860 | 3,860 |
Buildings and improvements | 19,955 | 19,885 |
Construction in progress | 578 | 676 |
Furniture, fixtures, and equipment | 2,208 | 1,470 |
Real estate investment, gross | 26,601 | 25,891 |
Multifamily Properties | The Colonnade | | |
Real Estate Properties [Line Items] | | |
Land | 8,340 | 8,340 |
Buildings and improvements | 36,960 | 36,828 |
Construction in progress | 212 | 62 |
Furniture, fixtures, and equipment | 1,208 | 934 |
Real estate investment, gross | 46,720 | 46,164 |
Multifamily Properties | Old Farm | | |
Real Estate Properties [Line Items] | | |
Land | 11,078 | 11,078 |
Buildings and improvements | 70,271 | 69,881 |
Construction in progress | 15 | 323 |
Furniture, fixtures, and equipment | 1,590 | 1,392 |
Real estate investment, gross | 82,954 | 82,674 |
Multifamily Properties | Stone Creek at Old Farm | | |
Real Estate Properties [Line Items] | | |
Land | 3,493 | 3,493 |
Buildings and improvements | 19,371 | 19,227 |
Construction in progress | | 15 |
Furniture, fixtures, and equipment | 417 | 374 |
Real estate investment, gross | 23,281 | 23,109 |
Multifamily Properties | Hollister Place | | |
Real Estate Properties [Line Items] | | |
Land | 2,782 | 2,782 |
Buildings and improvements | 20,859 | 20,754 |
Construction in progress | 357 | 89 |
Furniture, fixtures, and equipment | 1,050 | 698 |
Real estate investment, gross | 25,048 | 24,323 |
Multifamily Properties | Rockledge Apartments | | |
Real Estate Properties [Line Items] | | |
Land | 17,451 | 17,451 |
Buildings and improvements | 93,308 | 92,397 |
Construction in progress | 1,648 | 1,168 |
Furniture, fixtures, and equipment | 2,126 | 1,457 |
Real estate investment, gross | 114,533 | 112,473 |
Multifamily Properties | Atera Apartments | | |
Real Estate Properties [Line Items] | | |
Land | 22,371 | 22,371 |
Buildings and improvements | 35,327 | 35,097 |
Intangible lease assets | | 1,340 |
Construction in progress | 820 | |
Furniture, fixtures, and equipment | 869 | 673 |
Real estate investment, gross | 59,387 | 59,481 |
Multifamily Properties | Timberglen | Held For Sale Properties | | |
Real Estate Properties [Line Items] | | |
Land | | 2,510 |
Buildings and improvements | | 14,717 |
Furniture, fixtures, and equipment | | 1,077 |
Real estate investment, gross | | 18,304 |
Multifamily Properties | Southpoint Reserve at Stoney Creek | Held For Sale Properties | | |
Real Estate Properties [Line Items] | | |
Land | 6,120 | 6,120 |
Buildings and improvements | 11,317 | 11,255 |
Furniture, fixtures, and equipment | 755 | 679 |
Real estate investment, gross | 18,192 | 18,054 |
Multifamily Properties | Southpoint Reserve at Stoney Creek | Held For Sale Properties | Land | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 6,120 | |
Multifamily Properties | Southpoint Reserve at Stoney Creek | Held For Sale Properties | Buildings and Improvements | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 11,317 | |
Multifamily Properties | Southpoint Reserve at Stoney Creek | Held For Sale Properties | Furniture, Fixtures, and Equipment | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 755 | |
Multifamily Properties | Operating Properties | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 1,058,068 | 1,046,447 |
Accumulated depreciation and amortization | (109,189) | (88,252) |
Total Net Operating Real Estate Investments | 948,879 | 958,195 |
Multifamily Properties | Operating Properties | Intangible Lease Assets | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | | 1,340 |
Accumulated depreciation and amortization | | (497) |
Total Net Operating Real Estate Investments | | 843 |
Multifamily Properties | Operating Properties | Land | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 189,615 | 189,615 |
Total Net Operating Real Estate Investments | 189,615 | 189,615 |
Multifamily Properties | Operating Properties | Buildings and Improvements | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 811,696 | 806,981 |
Accumulated depreciation and amortization | (79,470) | (65,016) |
Total Net Operating Real Estate Investments | 732,226 | 741,965 |
Multifamily Properties | Operating Properties | Construction in Progress | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 5,113 | 3,786 |
Total Net Operating Real Estate Investments | 5,113 | 3,786 |
Multifamily Properties | Operating Properties | Furniture, Fixtures, and Equipment | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 51,644 | 44,725 |
Accumulated depreciation and amortization | (29,719) | (22,739) |
Total Net Operating Real Estate Investments | $ 21,925 | $ 21,986 |