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COMMITMENTS AND CONTINGENCIES, Development, Expansion and Renovation Projects (Details) $ in Thousands | 12 Months Ended
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Apr. 30, 2016 USD ($) ft² item
Real Estate Properties [Line Items] |
Anticipated Total Cost | $ 182,255
Project costs incurred to date | 167,532
Other [Member] |
Real Estate Properties [Line Items] |
Project costs incurred to date | $ 3,729
Multi-Family Residential [Member] | 163 unit - Deer Ridge - Jamestown, ND |
Real Estate Properties [Line Items] |
Number of apartment units | item | 163
Anticipated Total Cost | $ 24,837
Project costs incurred to date | $ 24,837
Multi-Family Residential [Member] | 251 unit - Cardinal Point - Grand Forks, ND |
Real Estate Properties [Line Items] |
Number of apartment units | item | 251
Anticipated Total Cost | $ 52,344
Project costs incurred to date | $ 49,732
Multi-Family Residential [Member] | 71 France Phase I, II, III - Edina, MN [Member] |
Real Estate Properties [Line Items] |
Number of apartment units | item | 241
Anticipated Total Cost | $ 73,290
Project costs incurred to date | $ 71,727
Estimated quarter for completion | 1Q
Estimated year for completion | 2017
Costs related to development projects placed in service in phases | $ 41,300
Interest in joint venture (in hundredths) | 52.60%
Area of real estate property | ft² | 20,956
Multi-Family Residential [Member] | Monticello Crossings - Monticello, MN |
Real Estate Properties [Line Items] |
Number of apartment units | item | 202
Anticipated Total Cost | $ 31,784
Project costs incurred to date | $ 17,507
Estimated quarter for completion | 2Q
Estimated year for completion | 2017

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- Definition The capitalized costs incurred (excluded from amortization), as of the date of the balance sheet, to obtain access to proved reserves and to provide facilities for extracting, treating, gathering and storing the oil and gas. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=50486907&loc=d3e511914-122862 + Details
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