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ACQUISITIONS, DEVELOPMENTS PLACED IN SERVICE AND DISPOSITIONS, Property Acquisitions (Details) | 9 Months Ended
--- | ---
Jan. 31, 2016 USD ($) ft² Unit | Jan. 31, 2015 USD ($) Unit
Business Acquisition [Line Items] |  |  |  |  |
Transaction costs expensed during the period |  | $ 162,000 |  | $ 104,000 |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Investment Allocation, Land |  | 6,819,000 | [1] | 9,941,000 |
Investment Allocation, Building |  | 129,979,000 | [1] | 103,627,000 |
Goodwill, acquired during period |  | 0 |  | 852,000 |
Results of operations from acquired properties [Abstract] |  |  |  |  |
Total revenue |  | 1,969,000 |  | 1,756,000 |
Net income (loss) |  | (62,000) |  | (27,000) |
Multifamily [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Investment Allocation, Land |  | 3,320,000 | [1] | 8,949,000 |
Investment Allocation, Building |  | 73,772,000 | [1] | 101,434,000 |
Healthcare [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Investment Allocation, Land | [1],[2],[3] | 2,610,000 |  |  |
Investment Allocation, Building | [1],[2],[3] | 54,473,000 |  |  |
Acquisitions [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Total Acquisition Cost |  | 71,750,000 |  | 41,297,000 |
Form of Consideration, Cash |  | 71,350,000 |  | 24,306,000 |
Form of Consideration, Units | [4] | 400,000 |  | 100,000 |
Form of Consideration, Other | [5] |  |  | 16,891,000 |
Investment Allocation, Land |  | 6,424,000 | [1],[2],[3],[6],[7],[8] | 16,271,000 | [9],[10],[11],[12],[13],[14]
Investment Allocation, Building |  | 64,144,000 | [1],[2],[3],[6],[7],[8] | 24,661,000 | [9],[10],[11],[12],[13],[14]
Investment Allocation, Intangible Assets |  | 1,182,000 |  | 365,000 |
Acquisitions [Member] | 71 France Phases I, II & III [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
JV partner contributions |  |  |  | 4,700,000 |
Acquisitions [Member] | Multifamily [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Total Acquisition Cost |  | 65,250,000 |  | 26,780,000 |
Form of Consideration, Cash |  | 64,850,000 |  | 14,511,000 |
Form of Consideration, Units | [4] | 400,000 |  | 100,000 |
Form of Consideration, Other | [5] |  |  | 12,169,000 |
Investment Allocation, Land |  | 5,521,000 |  | 1,754,000 |
Investment Allocation, Building |  | 59,035,000 |  | 24,661,000 |
Investment Allocation, Intangible Assets |  | $ 694,000 |  | $ 365,000 |
Acquisitions [Member] | Multifamily [Member] | 74 unit - Gardens - Grand Forks, ND [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired |  | Sep. 10, 2015 |  |  |
Total Acquisition Cost |  | $ 9,250,000 |  |  |
Form of Consideration, Cash |  | 8,850,000 |  |  |
Form of Consideration, Units | [4] | 400,000 |  |  |
Investment Allocation, Land |  | 518,000 |  |  |
Investment Allocation, Building |  | 8,672,000 |  |  |
Investment Allocation, Intangible Assets |  | $ 60,000 |  |  |
Number of units | Unit |  | 74 |  |  |
Acquisitions [Member] | Multifamily [Member] | 276 unit - GrandeVille at Cascade Lake - Rochester, MN [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired |  | Oct. 29, 2015 |  |  |
Total Acquisition Cost |  | $ 56,000,000 |  |  |
Form of Consideration, Cash |  | 56,000,000 |  |  |
Form of Consideration, Units | [4] | 0 |  |  |
Investment Allocation, Land |  | 5,003,000 |  |  |
Investment Allocation, Building |  | 50,363,000 |  |  |
Investment Allocation, Intangible Assets |  | $ 634,000 |  |  |
Number of units | Unit |  | 276 |  |  |
Acquisitions [Member] | Multifamily [Member] | 152 unit - Homestead Garden - Rapid City, SD [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired | [15] |  |  | Jun. 02, 2014 |
Total Acquisition Cost | [15] |  |  | $ 15,000,000 |
Form of Consideration, Cash | [15] |  |  | 5,092,000 |
Form of Consideration, Units | [4],[15] |  |  | 0 |
Form of Consideration, Other | [5],[15] |  |  | 9,908,000 |
Investment Allocation, Land | [15] |  |  | 655,000 |
Investment Allocation, Building | [15] |  |  | 14,139,000 |
Investment Allocation, Intangible Assets | [15] |  |  | $ 206,000 |
Number of units | Unit | [15] |  |  | 152 |
Goodwill, acquired during period |  |  |  | $ 852,000 |
Assumed debt |  |  |  | $ 9,900,000 |
Acquisitions [Member] | Multifamily [Member] | 52 unit - Silver Springs - Rapid City, SD [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired |  |  |  | Jun. 02, 2014 |
Total Acquisition Cost |  |  |  | $ 3,280,000 |
Form of Consideration, Cash |  |  |  | 1,019,000 |
Form of Consideration, Units | [4] |  |  | 0 |
Form of Consideration, Other | [5] |  |  | 2,261,000 |
Investment Allocation, Land |  |  |  | 215,000 |
Investment Allocation, Building |  |  |  | 3,006,000 |
Investment Allocation, Intangible Assets |  |  |  | $ 59,000 |
Number of units | Unit |  |  |  | 52 |
Assumed debt |  |  |  | $ 2,300,000 |
Acquisitions [Member] | Multifamily [Member] | 68 unit - Northridge - Bismarck, ND [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired |  |  |  | Sep. 12, 2014 |
Total Acquisition Cost |  |  |  | $ 8,500,000 |
Form of Consideration, Cash |  |  |  | 8,400,000 |
Form of Consideration, Units | [4] |  |  | 100,000 |
Form of Consideration, Other | [5] |  |  | 0 |
Investment Allocation, Land |  |  |  | 884,000 |
Investment Allocation, Building |  |  |  | 7,516,000 |
Investment Allocation, Intangible Assets |  |  |  | $ 100,000 |
Number of units | Unit |  |  |  | 68 |
Acquisitions [Member] | Healthcare [Member] | 27,819 sq ft Lakeside Medical Plaza - Omaha, NE [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired |  | Aug. 20, 2015 |  |  |
Total Acquisition Cost |  | $ 6,500,000 |  |  |
Form of Consideration, Cash |  | 6,500,000 |  |  |
Form of Consideration, Units | [4] | 0 |  |  |
Investment Allocation, Land |  | 903,000 |  |  |
Investment Allocation, Building |  | 5,109,000 |  |  |
Investment Allocation, Intangible Assets |  | $ 488,000 |  |  |
Area of real estate property | ft² |  | 27,819 |  |  |
Acquisitions [Member] | Unimproved Land [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Total Acquisition Cost |  |  |  | $ 14,517,000 |
Form of Consideration, Cash |  |  |  | 9,795,000 |
Form of Consideration, Units | [4] |  |  | 0 |
Form of Consideration, Other | [5] |  |  | 4,722,000 |
Investment Allocation, Land |  |  |  | 14,517,000 |
Investment Allocation, Building |  |  |  | 0 |
Investment Allocation, Intangible Assets |  |  |  | $ 0 |
Acquisitions [Member] | Unimproved Land [Member] | Creekside Crossing - Bismarck, ND [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired |  |  |  | May 22, 2014 |
Total Acquisition Cost |  |  |  | $ 4,269,000 |
Form of Consideration, Cash |  |  |  | 4,269,000 |
Form of Consideration, Units | [4] |  |  | 0 |
Form of Consideration, Other | [5] |  |  | 0 |
Investment Allocation, Land |  |  |  | 4,269,000 |
Investment Allocation, Building |  |  |  | 0 |
Investment Allocation, Intangible Assets |  |  |  | $ 0 |
Acquisitions [Member] | Unimproved Land [Member] | PrairieCare Medical - Brooklyn Park, MN [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired |  |  |  | Jun. 05, 2014 |
Total Acquisition Cost |  |  |  | $ 2,616,000 |
Form of Consideration, Cash |  |  |  | 2,616,000 |
Form of Consideration, Units | [4] |  |  | 0 |
Form of Consideration, Other | [5] |  |  | 0 |
Investment Allocation, Land |  |  |  | 2,616,000 |
Investment Allocation, Building |  |  |  | 0 |
Investment Allocation, Intangible Assets |  |  |  | $ 0 |
Acquisitions [Member] | Unimproved Land [Member] | 71 France Phase I - Edina, MN [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired | [16] |  |  | Jun. 12, 2014 |
Total Acquisition Cost | [16] |  |  | $ 1,413,000 |
Form of Consideration, Cash | [16] |  |  | 0 |
Form of Consideration, Units | [4],[16] |  |  | 0 |
Form of Consideration, Other | [5],[16] |  |  | 1,413,000 |
Investment Allocation, Land | [16] |  |  | 1,413,000 |
Investment Allocation, Building | [16] |  |  | 0 |
Investment Allocation, Intangible Assets | [16] |  |  | $ 0 |
Interest held percentage |  |  |  | 52.60% |
Acquisitions [Member] | Unimproved Land [Member] | Monticello 7th Addition - Monticello, MN [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired |  |  |  | Oct. 09, 2014 |
Total Acquisition Cost |  |  |  | $ 1,660,000 |
Form of Consideration, Cash |  |  |  | 1,660,000 |
Form of Consideration, Units | [4] |  |  | 0 |
Form of Consideration, Other | [5] |  |  | 0 |
Investment Allocation, Land |  |  |  | 1,660,000 |
Investment Allocation, Building |  |  |  | 0 |
Investment Allocation, Intangible Assets |  |  |  | $ 0 |
Acquisitions [Member] | Unimproved Land [Member] | 71 France Phase II & III - Edina, MN [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired | [16] |  |  | Nov. 04, 2014 |
Total Acquisition Cost | [16] |  |  | $ 3,309,000 |
Form of Consideration, Cash | [16] |  |  | 0 |
Form of Consideration, Units | [4],[16] |  |  | 0 |
Form of Consideration, Other | [5],[16] |  |  | 3,309,000 |
Investment Allocation, Land | [16] |  |  | 3,309,000 |
Investment Allocation, Building | [16] |  |  | 0 |
Investment Allocation, Intangible Assets | [16] |  |  | $ 0 |
Acquisitions [Member] | Unimproved Land [Member] | Minot 1525 24th Ave SW - Minot, ND [Member] |  |  |  |  |
Acquisitions and development projects placed in service [Abstract] |  |  |  |  |
Date Acquired |  |  |  | Dec. 23, 2014 |
Total Acquisition Cost |  |  |  | $ 1,250,000 |
Form of Consideration, Cash |  |  |  | 1,250,000 |
Form of Consideration, Units | [4] |  |  | 0 |
Form of Consideration, Other | [5] |  |  | 0 |
Investment Allocation, Land |  |  |  | 1,250,000 |
Investment Allocation, Building |  |  |  | 0 |
Investment Allocation, Intangible Assets |  |  |  | $ 0 |
[1] | Development projects that are placed in service in phases are excluded from this table until the entire project has been placed in service. See Note 6 for additional information on the Deer Ridge, 71 France, and Cardinal Point projects, which were partially placed in service during the nine months ended January 31, 2016.
[2] | Costs paid in prior fiscal years totaled $17.3 million. Additional costs incurred in fiscal year 2016 totaled $7.1 million, for a total project cost at January 31, 2016 of $24.4 million.
[3] | Costs paid in prior fiscal years totaled $20.8 million. Additional costs incurred in fiscal year 2016 totaled $11.9 million, for a total project cost at January 31, 2016 of $32.7 million.
[4] | Value of Units of the Operating Partnership at the acquisition date.
[5] | Consists of assumed debt (Homestead Garden I: $9.9 million, Silver Springs: $2.3 million) and value of land contributed by the joint venture partner (71 France: $4.7 million).
[6] | Costs paid in prior fiscal years totaled $12.3 million. Additional costs incurred in fiscal year 2016 totaled $2.3 million, for a total project cost at January 31, 2016 of $14.6 million.
[7] | Costs paid in prior fiscal years totaled $2.1 million. Additional costs incurred in fiscal year 2016 totaled approximately $500,000, for a total project cost at January 31, 2016 of $2.6 million.
[8] | Costs paid in prior fiscal years totaled $57.7 million. Additional costs incurred in fiscal year 2016 totaled $4.8 million, for a total project cost at January 31, 2016 of $62.5 million. The project is owned by a joint venture entity in which we currently have an approximately 70.0% interest. The joint venture is consolidated in our financial statements.
[9] | Costs paid in prior fiscal years totaled $1.0 million. Additional cost paid in fiscal year 2015 totaled $2.2 million, for a total project cost at January 31, 2015 of $3.2 million.
[10] | Costs paid in prior fiscal years totaled $1.2 million. Additional costs paid in fiscal year 2015 totaled $5.5 million, for a total project cost at January 31, 2015 of $6.6 million. The project is owned by a joint venture entity in which we currently have an approximately 86.1% interest. The joint venture is consolidated in our financial statements.
[11] | Costs paid in prior fiscal years totaled $11.3 million. Additional costs paid in fiscal year 2015 totaled $19.1 million, for a total project cost at January 31, 2015 of $30.4 million.
[12] | Costs paid in prior fiscal years totaled $12.2 million. Additional costs paid in fiscal year 2015 totaled $16.1 million, for a total project cost at January 31, 2015 of $28.3 million. The project is owned by a joint venture entity in which we currently have an approximately 58.6% interest. The joint venture is consolidated in our financial statements.
[13] | Costs paid in prior fiscal years totaled $26.5 million. Additional costs paid in fiscal year 2015 totaled $8.1 million, for a total project cost at January 31, 2015 of $34.6 million. The project is owned by a joint venture entity in which we have an approximately 52.9% interest. The joint venture is consolidated in our financial statements.
[14] | Costs paid in prior fiscal years totaled $8.1 million. Additional costs paid in fiscal year 2015 totaled $2.3 million, for a total project cost at January 31, 2015 of $10.4 million.
[15] | At acquisition, we adjusted the assumed debt to fair value and recognized approximately $852,000 of goodwill.
[16] | Land was contributed to a joint venture in which we currently have an approximately 52.6% interest. The joint venture is consolidated in our financial statements.

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