Real Estate Investments - Summary of Major Components of Investments in Multifamily Properties (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017 |
Real Estate Properties [Line Items] | | |
Land | $ 189,615 | $ 189,615 |
Buildings and improvements | 808,686 | 806,981 |
Intangible lease assets | 1,340 | 1,340 |
Construction in progress | 4,239 | 3,786 |
Furniture, fixtures, and equipment | 47,647 | 44,725 |
Real estate investment, gross | 1,051,527 | 1,046,447 |
Accumulated depreciation and amortization | (99,501) | (88,252) |
Total Net Operating Real Estate Investments | 952,026 | 958,195 |
Accumulated depreciation and amortization | (897) | (3,397) |
Total Net Real Estate Investments | 969,225 | 991,156 |
Multifamily Properties | | |
Real Estate Properties [Line Items] | | |
Accumulated depreciation and amortization | (897) | (3,397) |
Total Net Real Estate Investments | 969,225 | 991,156 |
Multifamily Properties | Intangible Lease Assets | | |
Real Estate Properties [Line Items] | | |
Total Net Real Estate Investments | 173 | 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 | 747,031 | 765,307 |
Multifamily Properties | Construction in Progress | | |
Real Estate Properties [Line Items] | | |
Total Net Real Estate Investments | 4,239 | 3,786 |
Multifamily Properties | Furniture, Fixtures, and Equipment | | |
Real Estate Properties [Line Items] | | |
Accumulated depreciation and amortization | (161) | (767) |
Total Net Real Estate Investments | 22,047 | 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 | 17,199 | 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 | 10,529 | 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 | 550 | 989 |
Multifamily Properties | Arbors on Forest Ridge | | |
Real Estate Properties [Line Items] | | |
Land | 2,330 | 2,330 |
Buildings and improvements | 11,092 | 11,089 |
Construction in progress | 62 | |
Furniture, fixtures, and equipment | 865 | 829 |
Real estate investment, gross | 14,349 | 14,248 |
Multifamily Properties | Cutter’s Point | | |
Real Estate Properties [Line Items] | | |
Land | 3,330 | 3,330 |
Buildings and improvements | 13,035 | 13,030 |
Furniture, fixtures, and equipment | 1,139 | 1,080 |
Real estate investment, gross | 17,504 | 17,440 |
Multifamily Properties | Eagle Crest | | |
Real Estate Properties [Line Items] | | |
Land | 5,450 | 5,450 |
Buildings and improvements | 22,018 | 22,346 |
Construction in progress | 4 | |
Furniture, fixtures, and equipment | 1,351 | 1,299 |
Real estate investment, gross | 28,823 | 29,095 |
Multifamily Properties | Silverbrook | | |
Real Estate Properties [Line Items] | | |
Land | 4,860 | 4,860 |
Buildings and improvements | 25,683 | 25,665 |
Construction in progress | 259 | |
Furniture, fixtures, and equipment | 2,611 | 2,509 |
Real estate investment, gross | 33,413 | 33,034 |
Multifamily Properties | Edgewater at Sandy Springs | | |
Real Estate Properties [Line Items] | | |
Land | 14,290 | 14,290 |
Buildings and improvements | 44,042 | 44,004 |
Furniture, fixtures, and equipment | 4,440 | 4,291 |
Real estate investment, gross | 62,772 | 62,585 |
Multifamily Properties | Beechwood Terrace | | |
Real Estate Properties [Line Items] | | |
Land | 1,390 | 1,390 |
Buildings and improvements | 20,743 | 20,729 |
Furniture, fixtures, and equipment | 1,345 | 1,271 |
Real estate investment, gross | 23,478 | 23,390 |
Multifamily Properties | Willow Grove | | |
Real Estate Properties [Line Items] | | |
Land | 3,940 | 3,940 |
Buildings and improvements | 10,796 | 10,766 |
Furniture, fixtures, and equipment | 989 | 942 |
Real estate investment, gross | 15,725 | 15,648 |
Multifamily Properties | Woodbridge | | |
Real Estate Properties [Line Items] | | |
Land | 3,650 | 3,650 |
Buildings and improvements | 13,054 | 13,031 |
Furniture, fixtures, and equipment | 1,176 | 1,093 |
Real estate investment, gross | 17,880 | 17,774 |
Multifamily Properties | Abbington Heights | | |
Real Estate Properties [Line Items] | | |
Land | 1,770 | 1,770 |
Buildings and improvements | 16,889 | 16,796 |
Furniture, fixtures, and equipment | 1,212 | 1,171 |
Real estate investment, gross | 19,871 | 19,737 |
Multifamily Properties | The Summit at Sabal Park | | |
Real Estate Properties [Line Items] | | |
Land | 5,770 | 5,770 |
Buildings and improvements | 13,414 | 13,377 |
Furniture, fixtures, and equipment | 1,186 | 1,136 |
Real estate investment, gross | 20,370 | 20,283 |
Multifamily Properties | Courtney Cove | | |
Real Estate Properties [Line Items] | | |
Land | 5,880 | 5,880 |
Buildings and improvements | 12,967 | 12,961 |
Construction in progress | | 2 |
Furniture, fixtures, and equipment | 1,106 | 1,096 |
Real estate investment, gross | 19,953 | 19,939 |
Multifamily Properties | Radbourne Lake | | |
Real Estate Properties [Line Items] | | |
Land | 2,440 | 2,440 |
Buildings and improvements | 21,968 | 21,924 |
Furniture, fixtures, and equipment | 1,356 | 1,300 |
Real estate investment, gross | 25,764 | 25,664 |
Multifamily Properties | Timber Creek | | |
Real Estate Properties [Line Items] | | |
Land | 11,260 | 11,260 |
Buildings and improvements | 13,506 | 13,479 |
Furniture, fixtures, and equipment | 1,194 | 1,158 |
Real estate investment, gross | 25,960 | 25,897 |
Multifamily Properties | Belmont at Duck Creek | | |
Real Estate Properties [Line Items] | | |
Land | 1,910 | 1,910 |
Buildings and improvements | 17,202 | 17,190 |
Furniture, fixtures, and equipment | 1,246 | 1,216 |
Real estate investment, gross | 20,358 | 20,316 |
Multifamily Properties | Sabal Palm at Lake Buena Vista | | |
Real Estate Properties [Line Items] | | |
Land | 7,580 | 7,580 |
Buildings and improvements | 41,237 | 41,229 |
Construction in progress | | 1 |
Furniture, fixtures, and equipment | 1,108 | 1,064 |
Real estate investment, gross | 49,925 | 49,874 |
Multifamily Properties | Cornerstone | | |
Real Estate Properties [Line Items] | | |
Land | 1,500 | 1,500 |
Buildings and improvements | 30,478 | 30,452 |
Construction in progress | | 17 |
Furniture, fixtures, and equipment | 1,602 | 1,487 |
Real estate investment, gross | 33,580 | 33,456 |
Multifamily Properties | The Preserve at Terrell Mill | | |
Real Estate Properties [Line Items] | | |
Land | 10,170 | 10,170 |
Buildings and improvements | 48,682 | 48,630 |
Construction in progress | | 32 |
Furniture, fixtures, and equipment | 4,220 | 4,074 |
Real estate investment, gross | 63,072 | 62,906 |
Multifamily Properties | The Ashlar | | |
Real Estate Properties [Line Items] | | |
Land | 4,090 | 4,090 |
Buildings and improvements | 12,647 | 12,640 |
Furniture, fixtures, and equipment | 1,666 | 1,575 |
Real estate investment, gross | 18,403 | 18,305 |
Multifamily Properties | Heatherstone | | |
Real Estate Properties [Line Items] | | |
Land | 2,320 | 2,320 |
Buildings and improvements | 7,983 | 7,868 |
Construction in progress | | 36 |
Furniture, fixtures, and equipment | 1,031 | 1,000 |
Real estate investment, gross | 11,334 | 11,224 |
Multifamily Properties | Versailles | | |
Real Estate Properties [Line Items] | | |
Land | 6,720 | 6,720 |
Buildings and improvements | 19,849 | 19,798 |
Construction in progress | 1,231 | 914 |
Furniture, fixtures, and equipment | 2,546 | 2,365 |
Real estate investment, gross | 30,346 | 29,797 |
Multifamily Properties | Seasons 704 Apartments | | |
Real Estate Properties [Line Items] | | |
Land | 7,480 | 7,480 |
Buildings and improvements | 14,198 | 14,079 |
Construction in progress | 53 | |
Furniture, fixtures, and equipment | 1,101 | 1,009 |
Real estate investment, gross | 22,832 | 22,568 |
Multifamily Properties | Madera Point | | |
Real Estate Properties [Line Items] | | |
Land | 4,920 | 4,920 |
Buildings and improvements | 17,542 | 17,481 |
Construction in progress | | 9 |
Furniture, fixtures, and equipment | 1,238 | 1,188 |
Real estate investment, gross | 23,700 | 23,598 |
Multifamily Properties | The Pointe at the Foothills | | |
Real Estate Properties [Line Items] | | |
Land | 4,840 | 4,840 |
Buildings and improvements | 46,920 | 46,723 |
Construction in progress | | 142 |
Furniture, fixtures, and equipment | 1,795 | 1,739 |
Real estate investment, gross | 53,555 | 53,444 |
Multifamily Properties | Venue at 8651 | | |
Real Estate Properties [Line Items] | | |
Land | 2,350 | 2,350 |
Buildings and improvements | 17,945 | 17,625 |
Construction in progress | 41 | 300 |
Furniture, fixtures, and equipment | 2,034 | 1,835 |
Real estate investment, gross | 22,370 | 22,110 |
Multifamily Properties | Parc500 | | |
Real Estate Properties [Line Items] | | |
Land | 3,860 | 3,860 |
Buildings and improvements | 19,927 | 19,885 |
Construction in progress | 692 | 676 |
Furniture, fixtures, and equipment | 1,768 | 1,470 |
Real estate investment, gross | 26,247 | 25,891 |
Multifamily Properties | The Colonnade | | |
Real Estate Properties [Line Items] | | |
Land | 8,340 | 8,340 |
Buildings and improvements | 36,861 | 36,828 |
Construction in progress | 73 | 62 |
Furniture, fixtures, and equipment | 1,080 | 934 |
Real estate investment, gross | 46,354 | 46,164 |
Multifamily Properties | Old Farm | | |
Real Estate Properties [Line Items] | | |
Land | 11,078 | 11,078 |
Buildings and improvements | 70,222 | 69,881 |
Construction in progress | 8 | 323 |
Furniture, fixtures, and equipment | 1,445 | 1,392 |
Real estate investment, gross | 82,753 | 82,674 |
Multifamily Properties | Stone Creek at Old Farm | | |
Real Estate Properties [Line Items] | | |
Land | 3,493 | 3,493 |
Buildings and improvements | 19,351 | 19,227 |
Construction in progress | | 15 |
Furniture, fixtures, and equipment | 399 | 374 |
Real estate investment, gross | 23,243 | 23,109 |
Multifamily Properties | Hollister Place | | |
Real Estate Properties [Line Items] | | |
Land | 2,782 | 2,782 |
Buildings and improvements | 20,779 | 20,754 |
Construction in progress | 228 | 89 |
Furniture, fixtures, and equipment | 847 | 698 |
Real estate investment, gross | 24,636 | 24,323 |
Multifamily Properties | Rockledge Apartments | | |
Real Estate Properties [Line Items] | | |
Land | 17,451 | 17,451 |
Buildings and improvements | 92,522 | 92,397 |
Construction in progress | 1,067 | 1,168 |
Furniture, fixtures, and equipment | 1,823 | 1,457 |
Real estate investment, gross | 112,863 | 112,473 |
Multifamily Properties | Atera Apartments | | |
Real Estate Properties [Line Items] | | |
Land | 22,371 | 22,371 |
Buildings and improvements | 35,134 | 35,097 |
Intangible lease assets | 1,340 | 1,340 |
Construction in progress | 521 | |
Furniture, fixtures, and equipment | 728 | 673 |
Real estate investment, gross | 60,094 | 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 | 11,265 | 11,255 |
Furniture, fixtures, and equipment | 711 | 679 |
Real estate investment, gross | 18,096 | 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 | 11,265 | |
Multifamily Properties | Southpoint Reserve at Stoney Creek | Held For Sale Properties | Furniture, Fixtures, and Equipment | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 711 | |
Multifamily Properties | Operating Properties | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 1,051,527 | 1,046,447 |
Accumulated depreciation and amortization | (99,501) | (88,252) |
Total Net Operating Real Estate Investments | 952,026 | 958,195 |
Multifamily Properties | Operating Properties | Intangible Lease Assets | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 1,340 | 1,340 |
Accumulated depreciation and amortization | (1,167) | (497) |
Total Net Operating Real Estate Investments | 173 | 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 | 808,686 | 806,981 |
Accumulated depreciation and amortization | (72,184) | (65,016) |
Total Net Operating Real Estate Investments | 736,502 | 741,965 |
Multifamily Properties | Operating Properties | Construction in Progress | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 4,239 | 3,786 |
Total Net Operating Real Estate Investments | 4,239 | 3,786 |
Multifamily Properties | Operating Properties | Furniture, Fixtures, and Equipment | | |
Real Estate Properties [Line Items] | | |
Real estate investment, gross | 47,647 | 44,725 |
Accumulated depreciation and amortization | (26,150) | (22,739) |
Total Net Operating Real Estate Investments | $ 21,497 | $ 21,986 |