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SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Gross amount at which carries at close of period [Abstract] |  |  |  |
Accumulated Depreciation | $ (399,249) | $ (353,871) | $ (399,249) | $ (349,122)
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Total real estate investments |  |  | 1,437,969 | 1,311,472
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward] |  |  |  |
Balance at beginning of year | 349,122 | 353,871 |  |
Additions during year [Abstract] |  |  |  |
Provisions for depreciation | 72,051 | 71,787 |  |
Deductions during year [Abstract] |  |  |  |
Accumulated depreciation on real estate sold or classified as held for sale | (21,440) | (72,758) |  |
Write down of asset and accumulated depreciation on impaired assets | 0 | 0 |  |
Other | (484) | (3,778) |  |
Balance at close of year | 399,249 | 349,122 |  |
Net basis of real estate investments for federal income tax purposes |  |  | 1,400,000 | 1,300,000
Unimproved Land |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Total | 1,376 | 1,376 | 0 | 1,376
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at beginning of year | 1,376 | 5,301 |  |
Cost of real estate sold | (1,376) | (3,925) |  |
Balance at close of year | 0 | 1,376 |  |
Total real estate investments |  |  | 1,413,308 | 1,295,332
Wholly Owned Properties |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Total | 1,643,078 | 1,643,078 | 1,812,557 | $ 1,643,078
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at beginning of year | 1,643,078 | 1,627,636 |  |
Improvements and Other | 27,460 | 21,868 |  |
Total Additions | 1,852,309 | 1,818,008 |  |
Cost of real estate sold | (38,111) | (171,112) |  |
Other | (1,641) | (3,818) |  |
Balance at close of year | 1,812,557 | 1,643,078 |  |
MultiFamily Same-Store |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 276,770 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 119,580 |
Buildings & Improvements |  |  | 1,143,758 |
Costs capitalized subsequent to acquisition |  |  | 160,871 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 137,250 |
Buildings & Improvements |  |  | 1,286,959 |
Total | 1,424,209 |  | 1,424,209 |
Accumulated Depreciation | (375,942) |  | (375,942) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 1,424,209 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 375,942 |  |  |
MultiFamily Same-Store | 71 France - Edina, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 53,324 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 4,721 |
Buildings & Improvements |  |  | 61,762 |
Costs capitalized subsequent to acquisition |  |  | 446 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 4,801 |
Buildings & Improvements |  |  | 62,128 |
Total | 66,929 |  | 66,929 |
Accumulated Depreciation | (14,312) |  | (14,312) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 66,929 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 14,312 |  |  |
MultiFamily Same-Store | Alps Park - Rapid City, SD |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 287 |
Buildings & Improvements |  |  | 5,551 |
Costs capitalized subsequent to acquisition |  |  | 425 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 336 |
Buildings & Improvements |  |  | 5,927 |
Total | 6,263 |  | 6,263 |
Accumulated Depreciation | (1,589) |  | (1,589) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 6,263 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 1,589 |  |  |
MultiFamily Same-Store | Arcata - Golden Valley, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 2,088 |
Buildings & Improvements |  |  | 31,036 |
Costs capitalized subsequent to acquisition |  |  | 356 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 2,128 |
Buildings & Improvements |  |  | 31,352 |
Total | 33,480 |  | 33,480 |
Accumulated Depreciation | (8,600) |  | (8,600) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 33,480 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 8,600 |  |  |
MultiFamily Same-Store | Ashland - Grand Forks, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 4,866 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 741 |
Buildings & Improvements |  |  | 7,569 |
Costs capitalized subsequent to acquisition |  |  | 346 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 823 |
Buildings & Improvements |  |  | 7,833 |
Total | 8,656 |  | 8,656 |
Accumulated Depreciation | (2,323) |  | (2,323) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 8,656 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 2,323 |  |  |
MultiFamily Same-Store | Avalon Cove - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,616 |
Buildings & Improvements |  |  | 34,074 |
Costs capitalized subsequent to acquisition |  |  | 646 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,808 |
Buildings & Improvements |  |  | 34,528 |
Total | 36,336 |  | 36,336 |
Accumulated Depreciation | (5,927) |  | (5,927) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 36,336 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 5,927 |  |  |
MultiFamily Same-Store | Boulder Court - Eagan, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,067 |
Buildings & Improvements |  |  | 5,498 |
Costs capitalized subsequent to acquisition |  |  | 3,305 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,576 |
Buildings & Improvements |  |  | 8,294 |
Total | 9,870 |  | 9,870 |
Accumulated Depreciation | (4,429) |  | (4,429) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 9,870 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 4,429 |  |  |
MultiFamily Same-Store | Canyon Lake - Rapid City, SD |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 2,508 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 305 |
Buildings & Improvements |  |  | 3,958 |
Costs capitalized subsequent to acquisition |  |  | 2,266 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 420 |
Buildings & Improvements |  |  | 6,109 |
Total | 6,529 |  | 6,529 |
Accumulated Depreciation | (3,208) |  | (3,208) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 6,529 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 3,208 |  |  |
MultiFamily Same-Store | Cardinal Point - Grand Forks, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,600 |
Buildings & Improvements |  |  | 33,400 |
Costs capitalized subsequent to acquisition |  |  | 288 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,727 |
Buildings & Improvements |  |  | 33,561 |
Total | 35,288 |  | 35,288 |
Accumulated Depreciation | (2,971) |  | (2,971) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 35,288 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 2,971 |  |  |
MultiFamily Same-Store | Cascade Shores - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 11,400 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,585 |
Buildings & Improvements |  |  | 16,710 |
Costs capitalized subsequent to acquisition |  |  | 149 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,587 |
Buildings & Improvements |  |  | 16,857 |
Total | 18,444 |  | 18,444 |
Accumulated Depreciation | (2,967) |  | (2,967) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 18,444 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 2,967 |  |  |
MultiFamily Same-Store | Castlerock - Billings, MT |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 736 |
Buildings & Improvements |  |  | 4,864 |
Costs capitalized subsequent to acquisition |  |  | 2,538 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,045 |
Buildings & Improvements |  |  | 7,093 |
Total | 8,138 |  | 8,138 |
Accumulated Depreciation | (4,549) |  | (4,549) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 8,138 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 4,549 |  |  |
MultiFamily Same-Store | Chateau - Minot, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 301 |
Buildings & Improvements |  |  | 20,058 |
Costs capitalized subsequent to acquisition |  |  | 1,094 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 326 |
Buildings & Improvements |  |  | 21,127 |
Total | 21,453 |  | 21,453 |
Accumulated Depreciation | (6,119) |  | (6,119) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 21,453 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 6,119 |  |  |
MultiFamily Same-Store | Cimarron Hills - Omaha, NE |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 8,700 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 706 |
Buildings & Improvements |  |  | 9,588 |
Costs capitalized subsequent to acquisition |  |  | 5,214 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,639 |
Buildings & Improvements |  |  | 13,869 |
Total | 15,508 |  | 15,508 |
Accumulated Depreciation | (7,858) |  | (7,858) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 15,508 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 7,858 |  |  |
MultiFamily Same-Store | Colonial Villa - Burnsville, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 2,401 |
Buildings & Improvements |  |  | 11,515 |
Costs capitalized subsequent to acquisition |  |  | 15,595 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 3,206 |
Buildings & Improvements |  |  | 26,305 |
Total | 29,511 |  | 29,511 |
Accumulated Depreciation | (12,940) |  | (12,940) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 29,511 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 12,940 |  |  |
MultiFamily Same-Store | Colony - Lincoln, NE |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 11,610 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,515 |
Buildings & Improvements |  |  | 15,730 |
Costs capitalized subsequent to acquisition |  |  | 3,131 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,817 |
Buildings & Improvements |  |  | 18,559 |
Total | 20,376 |  | 20,376 |
Accumulated Depreciation | (5,412) |  | (5,412) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 20,376 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 5,412 |  |  |
MultiFamily Same-Store | Commons at Southgate - Minot, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 5,945 |
Buildings & Improvements |  |  | 47,512 |
Costs capitalized subsequent to acquisition |  |  | 2,059 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 6,424 |
Buildings & Improvements |  |  | 49,092 |
Total | 55,516 |  | 55,516 |
Accumulated Depreciation | (14,012) |  | (14,012) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 55,516 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 14,012 |  |  |
MultiFamily Same-Store | Cottonwood - Bismarck, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,056 |
Buildings & Improvements |  |  | 17,372 |
Costs capitalized subsequent to acquisition |  |  | 6,053 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,962 |
Buildings & Improvements |  |  | 22,519 |
Total | 24,481 |  | 24,481 |
Accumulated Depreciation | (12,455) |  | (12,455) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 24,481 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 12,455 |  |  |
MultiFamily Same-Store | Country Meadows - Billings, MT |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 491 |
Buildings & Improvements |  |  | 7,809 |
Costs capitalized subsequent to acquisition |  |  | 1,845 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 599 |
Buildings & Improvements |  |  | 9,546 |
Total | 10,145 |  | 10,145 |
Accumulated Depreciation | (5,858) |  | (5,858) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 10,145 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 5,858 |  |  |
MultiFamily Same-Store | Crystal Bay - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 433 |
Buildings & Improvements |  |  | 11,425 |
Costs capitalized subsequent to acquisition |  |  | 360 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 479 |
Buildings & Improvements |  |  | 11,739 |
Total | 12,218 |  | 12,218 |
Accumulated Depreciation | (1,984) |  | (1,984) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 12,218 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 1,984 |  |  |
MultiFamily Same-Store | Cypress Court - St. Cloud, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 11,641 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,583 |
Buildings & Improvements |  |  | 18,879 |
Costs capitalized subsequent to acquisition |  |  | 474 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,625 |
Buildings & Improvements |  |  | 19,311 |
Total | 20,936 |  | 20,936 |
Accumulated Depreciation | (5,409) |  | (5,409) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 20,936 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 5,409 |  |  |
MultiFamily Same-Store | Deer Ridge - Jamestown, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 711 |
Buildings & Improvements |  |  | 24,129 |
Costs capitalized subsequent to acquisition |  |  | 322 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 785 |
Buildings & Improvements |  |  | 24,377 |
Total | 25,162 |  | 25,162 |
Accumulated Depreciation | (6,224) |  | (6,224) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 25,162 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 6,224 |  |  |
MultiFamily Same-Store | Dylan - Denver Co |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 12,155 |
Buildings & Improvements |  |  | 77,215 |
Costs capitalized subsequent to acquisition |  |  | 1,030 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 12,241 |
Buildings & Improvements |  |  | 78,159 |
Total | 90,400 |  | 90,400 |
Accumulated Depreciation | $ (8,205) |  | (8,205) |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | $ 90,400 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 8,205 |  |  |
MultiFamily Same-Store | Evergreen - Isanti, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,129 |
Buildings & Improvements |  |  | 5,524 |
Costs capitalized subsequent to acquisition |  |  | 569 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,159 |
Buildings & Improvements |  |  | 6,063 |
Total | 7,222 |  | 7,222 |
Accumulated Depreciation | (2,041) |  | (2,041) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 7,222 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 2,041 |  |  |
MultiFamily Same-Store | French Creek - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 201 |
Buildings & Improvements |  |  | 4,735 |
Costs capitalized subsequent to acquisition |  |  | 256 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 212 |
Buildings & Improvements |  |  | 4,980 |
Total | 5,192 |  | 5,192 |
Accumulated Depreciation | (809) |  | (809) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 5,192 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 809 |  |  |
MultiFamily Same-Store | Gardens - Grand Forks, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 518 |
Buildings & Improvements |  |  | 8,702 |
Costs capitalized subsequent to acquisition |  |  | 132 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 535 |
Buildings & Improvements |  |  | 8,817 |
Total | 9,352 |  | 9,352 |
Accumulated Depreciation | (1,759) |  | (1,759) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 9,352 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 1,759 |  |  |
MultiFamily Same-Store | Grand Gateway - St. Cloud, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 814 |
Buildings & Improvements |  |  | 7,086 |
Costs capitalized subsequent to acquisition |  |  | 2,064 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 970 |
Buildings & Improvements |  |  | 8,994 |
Total | 9,964 |  | 9,964 |
Accumulated Depreciation | (3,480) |  | (3,480) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 9,964 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 3,480 |  |  |
MultiFamily Same-Store | GrandeVille at Cascade Lake - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 36,000 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 5,003 |
Buildings & Improvements |  |  | 50,363 |
Costs capitalized subsequent to acquisition |  |  | 2,089 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 5,188 |
Buildings & Improvements |  |  | 52,267 |
Total | 57,455 |  | 57,455 |
Accumulated Depreciation | (10,304) |  | (10,304) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 57,455 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 10,304 |  |  |
MultiFamily Same-Store | Greenfield - Omaha, NE |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 578 |
Buildings & Improvements |  |  | 4,122 |
Costs capitalized subsequent to acquisition |  |  | 2,652 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 876 |
Buildings & Improvements |  |  | 6,476 |
Total | 7,352 |  | 7,352 |
Accumulated Depreciation | (2,425) |  | (2,425) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 7,352 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 2,425 |  |  |
MultiFamily Same-Store | Heritage Manor - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 403 |
Buildings & Improvements |  |  | 6,968 |
Costs capitalized subsequent to acquisition |  |  | 3,741 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 790 |
Buildings & Improvements |  |  | 10,322 |
Total | 11,112 |  | 11,112 |
Accumulated Depreciation | (6,243) |  | (6,243) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 11,112 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 6,243 |  |  |
MultiFamily Same-Store | Homestead Garden - Rapid City, SD |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 655 |
Buildings & Improvements |  |  | 14,139 |
Costs capitalized subsequent to acquisition |  |  | 540 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 792 |
Buildings & Improvements |  |  | 14,542 |
Total | 15,334 |  | 15,334 |
Accumulated Depreciation | (3,427) |  | (3,427) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 15,334 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 3,427 |  |  |
MultiFamily Same-Store | Lakeside Village Lincoln, NE |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 11,489 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,215 |
Buildings & Improvements |  |  | 15,837 |
Costs capitalized subsequent to acquisition |  |  | 1,850 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,476 |
Buildings & Improvements |  |  | 17,426 |
Total | 18,902 |  | 18,902 |
Accumulated Depreciation | (5,230) |  | (5,230) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 18,902 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 5,230 |  |  |
MultiFamily Same-Store | Legacy - Grand Forks, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 13,072 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,362 |
Buildings & Improvements |  |  | 21,727 |
Costs capitalized subsequent to acquisition |  |  | 11,044 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 2,474 |
Buildings & Improvements |  |  | 31,659 |
Total | 34,133 |  | 34,133 |
Accumulated Depreciation | (18,730) |  | (18,730) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 34,133 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 18,730 |  |  |
MultiFamily Same-Store | Legacy Heights - Bismarck, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,207 |
Buildings & Improvements |  |  | 13,742 |
Costs capitalized subsequent to acquisition |  |  | 257 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,142 |
Buildings & Improvements |  |  | 14,064 |
Total | 15,206 |  | 15,206 |
Accumulated Depreciation | (2,604) |  | (2,604) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 15,206 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 2,604 |  |  |
MultiFamily Same-Store | Meadows - Jamestown, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 590 |
Buildings & Improvements |  |  | 4,519 |
Costs capitalized subsequent to acquisition |  |  | 2,087 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 730 |
Buildings & Improvements |  |  | 6,466 |
Total | 7,196 |  | 7,196 |
Accumulated Depreciation | (3,788) |  | (3,788) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 7,196 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 3,788 |  |  |
MultiFamily Same-Store | Monticello Crossings - Monticello, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,734 |
Buildings & Improvements |  |  | 30,136 |
Costs capitalized subsequent to acquisition |  |  | 376 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,951 |
Buildings & Improvements |  |  | 30,295 |
Total | 32,246 |  | 32,246 |
Accumulated Depreciation | (5,407) |  | (5,407) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 32,246 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 5,407 |  |  |
MultiFamily Same-Store | Monticello Village - Monticello, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 490 |
Buildings & Improvements |  |  | 3,756 |
Costs capitalized subsequent to acquisition |  |  | 1,234 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 655 |
Buildings & Improvements |  |  | 4,825 |
Total | 5,480 |  | 5,480 |
Accumulated Depreciation | (2,434) |  | (2,434) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 5,480 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 2,434 |  |  |
MultiFamily Same-Store | Northridge - Bismarck, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 884 |
Buildings & Improvements |  |  | 7,515 |
Costs capitalized subsequent to acquisition |  |  | 278 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,048 |
Buildings & Improvements |  |  | 7,629 |
Total | 8,677 |  | 8,677 |
Accumulated Depreciation | (1,641) |  | (1,641) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 8,677 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 1,641 |  |  |
MultiFamily Same-Store | Olympic Village - Billings, MT |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,164 |
Buildings & Improvements |  |  | 10,441 |
Costs capitalized subsequent to acquisition |  |  | 4,175 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,885 |
Buildings & Improvements |  |  | 13,895 |
Total | 15,780 |  | 15,780 |
Accumulated Depreciation | (8,287) |  | (8,287) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 15,780 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 8,287 |  |  |
MultiFamily Same-Store | Olympik Village - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,034 |
Buildings & Improvements |  |  | 6,109 |
Costs capitalized subsequent to acquisition |  |  | 3,459 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,450 |
Buildings & Improvements |  |  | 9,152 |
Total | 10,602 |  | 10,602 |
Accumulated Depreciation | (4,136) |  | (4,136) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 10,602 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 4,136 |  |  |
MultiFamily Same-Store | Oxbo - St Paul, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 5,809 |
Buildings & Improvements |  |  | 51,586 |
Costs capitalized subsequent to acquisition |  |  | 214 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 5,822 |
Buildings & Improvements |  |  | 51,787 |
Total | 57,609 |  | 57,609 |
Accumulated Depreciation | $ (7,107) |  | (7,107) |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | $ 57,609 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 7,107 |  |  |
MultiFamily Same-Store | Park Meadows - Waite Park, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,143 |
Buildings & Improvements |  |  | 9,099 |
Costs capitalized subsequent to acquisition |  |  | 10,277 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 2,140 |
Buildings & Improvements |  |  | 18,379 |
Total | 20,519 |  | 20,519 |
Accumulated Depreciation | (12,605) |  | (12,605) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 20,519 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 12,605 |  |  |
MultiFamily Same-Store | Park Place - Plymouth, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 10,609 |
Buildings & Improvements |  |  | 80,781 |
Costs capitalized subsequent to acquisition |  |  | 10,433 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 10,819 |
Buildings & Improvements |  |  | 91,004 |
Total | 101,823 |  | 101,823 |
Accumulated Depreciation | $ (11,303) |  | (11,303) |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | $ 101,823 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 11,303 |  |  |
MultiFamily Same-Store | Plaza - Minot, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 867 |
Buildings & Improvements |  |  | 12,784 |
Costs capitalized subsequent to acquisition |  |  | 3,128 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,011 |
Buildings & Improvements |  |  | 15,768 |
Total | 16,779 |  | 16,779 |
Accumulated Depreciation | (5,734) |  | (5,734) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 16,779 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 5,734 |  |  |
MultiFamily Same-Store | Pointe West - Rapid City, SD |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 240 |
Buildings & Improvements |  |  | 3,538 |
Costs capitalized subsequent to acquisition |  |  | 2,185 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 463 |
Buildings & Improvements |  |  | 5,500 |
Total | 5,963 |  | 5,963 |
Accumulated Depreciation | (3,865) |  | (3,865) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 5,963 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 3,865 |  |  |
MultiFamily Same-Store | Ponds at Heritage Place - Sartell, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 395 |
Buildings & Improvements |  |  | 4,564 |
Costs capitalized subsequent to acquisition |  |  | 510 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 419 |
Buildings & Improvements |  |  | 5,050 |
Total | 5,469 |  | 5,469 |
Accumulated Depreciation | (1,539) |  | (1,539) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 5,469 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 1,539 |  |  |
MultiFamily Same-Store | Quarry Ridge - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 24,057 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 2,254 |
Buildings & Improvements |  |  | 30,024 |
Costs capitalized subsequent to acquisition |  |  | 2,356 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 2,412 |
Buildings & Improvements |  |  | 32,222 |
Total | 34,634 |  | 34,634 |
Accumulated Depreciation | (10,969) |  | (10,969) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 34,634 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 10,969 |  |  |
MultiFamily Same-Store | Red 20 - Minneapolis, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 21,274 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,900 |
Buildings & Improvements |  |  | 24,116 |
Costs capitalized subsequent to acquisition |  |  | 397 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,908 |
Buildings & Improvements |  |  | 24,505 |
Total | 26,413 |  | 26,413 |
Accumulated Depreciation | (6,829) |  | (6,829) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 26,413 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 6,829 |  |  |
MultiFamily Same-Store | Regency Park Estates - St. Cloud, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 7,400 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 702 |
Buildings & Improvements |  |  | 10,198 |
Costs capitalized subsequent to acquisition |  |  | 3,337 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,179 |
Buildings & Improvements |  |  | 13,058 |
Total | 14,237 |  | 14,237 |
Accumulated Depreciation | (4,394) |  | (4,394) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 14,237 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 4,394 |  |  |
MultiFamily Same-Store | Rimrock West - Billings, MT |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 330 |
Buildings & Improvements |  |  | 3,489 |
Costs capitalized subsequent to acquisition |  |  | 2,157 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 568 |
Buildings & Improvements |  |  | 5,408 |
Total | 5,976 |  | 5,976 |
Accumulated Depreciation | (3,250) |  | (3,250) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 5,976 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 3,250 |  |  |
MultiFamily Same-Store | River Ridge - Bismarck, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 576 |
Buildings & Improvements |  |  | 24,670 |
Costs capitalized subsequent to acquisition |  |  | 1,092 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 922 |
Buildings & Improvements |  |  | 25,416 |
Total | 26,338 |  | 26,338 |
Accumulated Depreciation | (8,025) |  | (8,025) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 26,338 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 8,025 |  |  |
MultiFamily Same-Store | Rocky Meadows - Billings, MT |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 656 |
Buildings & Improvements |  |  | 5,726 |
Costs capitalized subsequent to acquisition |  |  | 1,745 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 840 |
Buildings & Improvements |  |  | 7,287 |
Total | 8,127 |  | 8,127 |
Accumulated Depreciation | (4,687) |  | (4,687) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 8,127 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 4,687 |  |  |
MultiFamily Same-Store | Rum River - Isanti, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 3,041 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 843 |
Buildings & Improvements |  |  | 4,823 |
Costs capitalized subsequent to acquisition |  |  | 544 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 870 |
Buildings & Improvements |  |  | 5,340 |
Total | 6,210 |  | 6,210 |
Accumulated Depreciation | (2,162) |  | (2,162) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 6,210 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 2,162 |  |  |
MultiFamily Same-Store | Silver Springs - Rapid City, SD |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 1,997 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 215 |
Buildings & Improvements |  |  | 3,007 |
Costs capitalized subsequent to acquisition |  |  | 890 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 273 |
Buildings & Improvements |  |  | 3,839 |
Total | 4,112 |  | 4,112 |
Accumulated Depreciation | (958) |  | (958) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 4,112 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 958 |  |  |
MultiFamily Same-Store | South Pointe - Minot, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 550 |
Buildings & Improvements |  |  | 9,548 |
Costs capitalized subsequent to acquisition |  |  | 5,990 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,489 |
Buildings & Improvements |  |  | 14,599 |
Total | 16,088 |  | 16,088 |
Accumulated Depreciation | (10,311) |  | (10,311) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 16,088 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 10,311 |  |  |
MultiFamily Same-Store | Southpoint - Grand Forks, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 576 |
Buildings & Improvements |  |  | 9,893 |
Costs capitalized subsequent to acquisition |  |  | 236 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 663 |
Buildings & Improvements |  |  | 10,042 |
Total | 10,705 |  | 10,705 |
Accumulated Depreciation | (2,293) |  | (2,293) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 10,705 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 2,293 |  |  |
MultiFamily Same-Store | Sunset Trail - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 336 |
Buildings & Improvements |  |  | 12,814 |
Costs capitalized subsequent to acquisition |  |  | 3,560 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 826 |
Buildings & Improvements |  |  | 15,884 |
Total | 16,710 |  | 16,710 |
Accumulated Depreciation | (9,024) |  | (9,024) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 16,710 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 9,024 |  |  |
MultiFamily Same-Store | Thomasbrook - Lincoln, NE |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 13,100 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 600 |
Buildings & Improvements |  |  | 10,306 |
Costs capitalized subsequent to acquisition |  |  | 5,686 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,710 |
Buildings & Improvements |  |  | 14,882 |
Total | 16,592 |  | 16,592 |
Accumulated Depreciation | (8,563) |  | (8,563) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 16,592 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 8,563 |  |  |
MultiFamily Same-Store | Village Green - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 234 |
Buildings & Improvements |  |  | 2,296 |
Costs capitalized subsequent to acquisition |  |  | 1,083 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 361 |
Buildings & Improvements |  |  | 3,252 |
Total | 3,613 |  | 3,613 |
Accumulated Depreciation | (1,682) |  | (1,682) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 3,613 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 1,682 |  |  |
MultiFamily Same-Store | West Stonehill - Waite Park, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 16,425 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 939 |
Buildings & Improvements |  |  | 10,167 |
Costs capitalized subsequent to acquisition |  |  | 8,171 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,912 |
Buildings & Improvements |  |  | 17,365 |
Total | 19,277 |  | 19,277 |
Accumulated Depreciation | (12,060) |  | (12,060) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 19,277 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 12,060 |  |  |
MultiFamily Same-Store | Westend - Denver CO |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 25,525 |
Buildings & Improvements |  |  | 102,180 |
Costs capitalized subsequent to acquisition |  |  | 605 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 25,532 |
Buildings & Improvements |  |  | 102,778 |
Total | 128,310 |  | 128,310 |
Accumulated Depreciation | $ (9,952) |  | (9,952) |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | $ 128,310 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 9,952 |  |  |
MultiFamily Same-Store | Whispering Ridge - Omaha, NE |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 19,664 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 2,139 |
Buildings & Improvements |  |  | 25,424 |
Costs capitalized subsequent to acquisition |  |  | 2,992 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 2,551 |
Buildings & Improvements |  |  | 28,004 |
Total | 30,555 |  | 30,555 |
Accumulated Depreciation | (7,850) |  | (7,850) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 30,555 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 7,850 |  |  |
MultiFamily Same-Store | Winchester - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 748 |
Buildings & Improvements |  |  | 5,622 |
Costs capitalized subsequent to acquisition |  |  | 3,040 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,112 |
Buildings & Improvements |  |  | 8,298 |
Total | 9,410 |  | 9,410 |
Accumulated Depreciation | (4,418) |  | (4,418) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 9,410 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 4,418 |  |  |
MultiFamily Same-Store | Woodridge - Rochester, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 5,202 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 370 |
Buildings & Improvements |  |  | 6,028 |
Costs capitalized subsequent to acquisition |  |  | 5,498 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 761 |
Buildings & Improvements |  |  | 11,135 |
Total | 11,896 |  | 11,896 |
Accumulated Depreciation | (6,266) |  | (6,266) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 11,896 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | $ 6,266 |  |  |
MultiFamily Same-Store | Minimum | 71 France - Edina, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Alps Park - Rapid City, SD |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Ashland - Grand Forks, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Avalon Cove - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Boulder Court - Eagan, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Canyon Lake - Rapid City, SD |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Cardinal Point - Grand Forks, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Cascade Shores - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Castlerock - Billings, MT |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Chateau - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Cimarron Hills - Omaha, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Colonial Villa - Burnsville, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Colony - Lincoln, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Commons at Southgate - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Cottonwood - Bismarck, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Country Meadows - Billings, MT |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Crystal Bay - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Cypress Court - St. Cloud, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Deer Ridge - Jamestown, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Evergreen - Isanti, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | French Creek - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Gardens - Grand Forks, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Grand Gateway - St. Cloud, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | GrandeVille at Cascade Lake - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Greenfield - Omaha, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Heritage Manor - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Homestead Garden - Rapid City, SD |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Lakeside Village Lincoln, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Legacy - Grand Forks, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Legacy Heights - Bismarck, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Meadows - Jamestown, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Monticello Crossings - Monticello, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Monticello Village - Monticello, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Northridge - Bismarck, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Olympic Village - Billings, MT |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Olympik Village - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Park Meadows - Waite Park, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Plaza - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Pointe West - Rapid City, SD |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Ponds at Heritage Place - Sartell, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Quarry Ridge - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Red 20 - Minneapolis, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Regency Park Estates - St. Cloud, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Rimrock West - Billings, MT |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | River Ridge - Bismarck, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Rocky Meadows - Billings, MT |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Rum River - Isanti, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Silver Springs - Rapid City, SD |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | South Pointe - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Southpoint - Grand Forks, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Sunset Trail - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Thomasbrook - Lincoln, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Village Green - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | West Stonehill - Waite Park, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Whispering Ridge - Omaha, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Winchester - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Minimum | Woodridge - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
MultiFamily Same-Store | Maximum | 71 France - Edina, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Alps Park - Rapid City, SD |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Ashland - Grand Forks, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Avalon Cove - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Boulder Court - Eagan, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Canyon Lake - Rapid City, SD |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Cardinal Point - Grand Forks, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Cascade Shores - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Castlerock - Billings, MT |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Chateau - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Cimarron Hills - Omaha, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Colonial Villa - Burnsville, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Colony - Lincoln, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Commons at Southgate - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Cottonwood - Bismarck, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Country Meadows - Billings, MT |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Crystal Bay - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Cypress Court - St. Cloud, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Deer Ridge - Jamestown, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Evergreen - Isanti, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | French Creek - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Gardens - Grand Forks, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Grand Gateway - St. Cloud, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | GrandeVille at Cascade Lake - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Greenfield - Omaha, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Heritage Manor - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Homestead Garden - Rapid City, SD |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Lakeside Village Lincoln, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Legacy - Grand Forks, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Legacy Heights - Bismarck, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Meadows - Jamestown, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Monticello Crossings - Monticello, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Monticello Village - Monticello, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Northridge - Bismarck, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Olympic Village - Billings, MT |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Olympik Village - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Park Meadows - Waite Park, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Plaza - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Pointe West - Rapid City, SD |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Ponds at Heritage Place - Sartell, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Quarry Ridge - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Red 20 - Minneapolis, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Regency Park Estates - St. Cloud, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Rimrock West - Billings, MT |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | River Ridge - Bismarck, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Rocky Meadows - Billings, MT |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Rum River - Isanti, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Silver Springs - Rapid City, SD |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | South Pointe - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Southpoint - Grand Forks, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Sunset Trail - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Thomasbrook - Lincoln, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Village Green - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | West Stonehill - Waite Park, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Whispering Ridge - Omaha, NE |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Winchester - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Maximum | Woodridge - Rochester, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
MultiFamily Same-Store | Wholly Owned Properties |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Multifamily and Other | $ 181,771 | $ 168,504 |  |
MultiFamily Non-Same-Store |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 21,675 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 25,709 |
Buildings & Improvements |  |  | 320,514 |
Costs capitalized subsequent to acquisition |  |  | 8,946 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 25,808 |
Buildings & Improvements |  |  | 329,361 |
Total | 355,169 |  | 355,169 |
Accumulated Depreciation | (12,048) |  | (12,048) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 355,169 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 12,048 |  |  |
MultiFamily Non-Same-Store | FreightYard Townhomes & Flats - Minneapolis, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 1,889 |
Buildings & Improvements |  |  | 23,616 |
Costs capitalized subsequent to acquisition |  |  | 877 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 1,895 |
Buildings & Improvements |  |  | 24,487 |
Total | 26,382 |  | 26,382 |
Accumulated Depreciation | $ (1,171) |  | (1,171) |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | $ 26,382 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 1,171 |  |  |
MultiFamily Non-Same-Store | Ironwood - Minneapolis, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 2,165 |
Buildings & Improvements |  |  | 36,874 |
Costs capitalized subsequent to acquisition |  |  | 84 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 2,167 |
Buildings & Improvements |  |  | 36,956 |
Total | 39,123 |  | 39,123 |
Accumulated Depreciation | $ (1,187) |  | (1,187) |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | $ 39,123 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 1,187 |  |  |
MultiFamily Non-Same-Store | Lugano at Cherry Creek - Denver, CO |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 7,679 |
Buildings & Improvements |  |  | 87,766 |
Costs capitalized subsequent to acquisition |  |  | 635 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 7,679 |
Buildings & Improvements |  |  | 88,401 |
Total | 96,080 |  | 96,080 |
Accumulated Depreciation | $ (4,330) |  | (4,330) |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | $ 96,080 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 4,330 |  |  |
MultiFamily Non-Same-Store | Parkhouse - Thornton, CO |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 10,474 |
Buildings & Improvements |  |  | 132,105 |
Costs capitalized subsequent to acquisition |  |  | 228 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 10,484 |
Buildings & Improvements |  |  | 132,323 |
Total | 142,807 |  | 142,807 |
Accumulated Depreciation | $ (1,722) |  | (1,722) |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | $ 142,807 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 1,722 |  |  |
MultiFamily Non-Same-Store | SouthFork Townhomes |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 21,675 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 3,502 |
Buildings & Improvements |  |  | 40,153 |
Costs capitalized subsequent to acquisition |  |  | 7,122 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 3,583 |
Buildings & Improvements |  |  | 47,194 |
Total | 50,777 |  | 50,777 |
Accumulated Depreciation | $ (3,638) |  | (3,638) |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | $ 50,777 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 3,638 |  |  |
Total Multifamily |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 298,445 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 145,289 |
Buildings & Improvements |  |  | 1,464,272 |
Costs capitalized subsequent to acquisition |  |  | 169,817 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 163,058 |
Buildings & Improvements |  |  | 1,616,320 |
Total | 1,779,378 |  | 1,779,378 |
Accumulated Depreciation | (387,990) |  | (387,990) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 1,779,378 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 387,990 |  |  |
Other - Mixed Use |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 389 |
Buildings & Improvements |  |  | 18,920 |
Costs capitalized subsequent to acquisition |  |  | 5,391 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 607 |
Buildings & Improvements |  |  | 24,093 |
Total | 24,700 |  | 24,700 |
Accumulated Depreciation | (6,647) |  | (6,647) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 24,700 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 6,647 |  |  |
Other - Mixed Use | 71 France - Edina, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 0 |
Buildings & Improvements |  |  | 5,879 |
Costs capitalized subsequent to acquisition |  |  | 867 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 0 |
Buildings & Improvements |  |  | 6,746 |
Total | 6,746 |  | 6,746 |
Accumulated Depreciation | (1,151) |  | (1,151) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 6,746 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 1,151 |  |  |
Other - Mixed Use | Oxbo - St Paul, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 0 |
Buildings & Improvements |  |  | 3,472 |
Costs capitalized subsequent to acquisition |  |  | 54 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 0 |
Buildings & Improvements |  |  | 3,526 |
Total | 3,526 |  | 3,526 |
Accumulated Depreciation | $ (436) |  | (436) |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | $ 3,526 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 436 |  |  |
Other - Mixed Use | Plaza - Minot, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 389 |
Buildings & Improvements |  |  | 5,444 |
Costs capitalized subsequent to acquisition |  |  | 3,845 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 607 |
Buildings & Improvements |  |  | 9,071 |
Total | 9,678 |  | 9,678 |
Accumulated Depreciation | (4,305) |  | (4,305) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 9,678 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 4,305 |  |  |
Other - Mixed Use | Red 20 - Minneapolis, MN |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 0 |
Buildings & Improvements |  |  | 2,525 |
Costs capitalized subsequent to acquisition |  |  | 419 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 0 |
Buildings & Improvements |  |  | 2,944 |
Total | 2,944 |  | 2,944 |
Accumulated Depreciation | (683) |  | (683) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 2,944 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 683 |  |  |
Other - Mixed Use | Lugano at Cherry Creek - Denver, CO |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 0 |
Buildings & Improvements |  |  | 1,600 |
Costs capitalized subsequent to acquisition |  |  | 206 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 0 |
Buildings & Improvements |  |  | 1,806 |
Total | 1,806 |  | 1,806 |
Accumulated Depreciation | $ (72) |  | (72) |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | $ 1,806 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | $ 72 |  |  |
Other - Mixed Use | Minimum | 71 France - Edina, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
Other - Mixed Use | Minimum | Plaza - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
Other - Mixed Use | Minimum | Red 20 - Minneapolis, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
Other - Mixed Use | Maximum | 71 France - Edina, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
Other - Mixed Use | Maximum | Plaza - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
Other - Mixed Use | Maximum | Red 20 - Minneapolis, MN |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
Other - Commercial |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 662 |
Buildings & Improvements |  |  | 7,818 |
Costs capitalized subsequent to acquisition |  |  | (1) |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 662 |
Buildings & Improvements |  |  | 7,817 |
Total | $ 8,479 |  | 8,479 |
Accumulated Depreciation | (4,612) |  | (4,612) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 8,479 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 4,612 |  |  |
Other - Commercial | 3100 10th St SW - Minot, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 246 |
Buildings & Improvements |  |  | 1,866 |
Costs capitalized subsequent to acquisition |  |  | (1) |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 246 |
Buildings & Improvements |  |  | 1,865 |
Total | 2,111 |  | 2,111 |
Accumulated Depreciation | (103) |  | (103) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 2,111 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | 103 |  |  |
Other - Commercial | Minot IPS - Minot, ND |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 0 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 416 |
Buildings & Improvements |  |  | 5,952 |
Costs capitalized subsequent to acquisition |  |  | 0 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 416 |
Buildings & Improvements |  |  | 5,952 |
Total | 6,368 |  | 6,368 |
Accumulated Depreciation | (4,509) |  | (4,509) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 6,368 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | $ 4,509 |  |  |
Other - Commercial | Minimum | Minot IPS - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
Other - Commercial | Maximum | 3100 10th St SW - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 30 years |  |  |
Other - Commercial | Maximum | Minot IPS - Minot, ND |  |  |  |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Life on which depreciation in latest income statement is computed | 37 years |  |  |
Total |  |  |  |
Real Estate And Accumulated Depreciation [Abstract] |  |  |  |
Encumbrances |  |  | 298,445 |
Initial Cost to Company [Abstract] |  |  |  |
Land |  |  | 146,340 |
Buildings & Improvements |  |  | 1,491,010 |
Costs capitalized subsequent to acquisition |  |  | 175,207 |
Gross amount at which carries at close of period [Abstract] |  |  |  |
Land |  |  | 164,327 |
Buildings & Improvements |  |  | 1,648,230 |
Total | $ 1,812,557 |  | 1,812,557 |
Accumulated Depreciation | (399,249) |  | $ (399,249) |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward] |  |  |  |
Balance at close of year | 1,812,557 |  |  |
Deductions during year [Abstract] |  |  |  |
Balance at close of year | $ 399,249 |  |  |

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