The amount of expenditures for a real estate projects that has been placed in service as of period end.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of facility held for productive use including, but not limited to, office, production, storage and distribution facilities, acquired at the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

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- Definition

Amount of real estate acquired, at the acquisition date.

+ References

+ Details

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Period Type:	instant

- Definition

The capitalized costs incurred during the period (excluded from amortization) to obtain access to proved reserves and to provide facilities for extracting, treating, gathering and storing the oil and gas.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(c)(3)(ii)(A))
-URI http://asc.fasb.org/extlink&oid=82851474&loc=d3e511914-122862

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(c)(7)(ii))
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(a)(7))
-URI http://asc.fasb.org/extlink&oid=82851474&loc=d3e511914-122862

+ Details

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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

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

- Definition

The number of units in a real estate property owned as of the balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

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- Details

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- Details

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ACQUISITIONS, DEVELOPMENT PROJECTS PLACED IN SERVICE AND DISPOSITIONS - Development Projects Placed In Service (Details) - Development Projects Placed in Service	12 Months Ended
	Apr. 30, 2017 USD ($) unit	Apr. 30, 2016 USD ($)	Dec. 31, 2018 USD ($)	Apr. 30, 2018 USD ($)
Business Acquisition [Line Items]
Land	$ 6,455,000
Building	96,423,000
Development cost	102,878,000		$ 0	$ 12
Multi-Family Residential \| 71 France - Edina, MN
Business Acquisition [Line Items]
Land	4,721,000
Building	67,641,000
Development cost	$ 72,362,000
Number of apartment units \| unit	241
Development costs paid	$ 1,500,000	$ 70,900,000
Project costs incurred to date	$ 72,400,000
Interest in joint venture	52.60%
Multi-Family Residential \| Monticello Crossings - Monticello, MN
Business Acquisition [Line Items]
Land	$ 1,734,000
Building	28,782,000
Development cost	$ 30,516,000
Number of apartment units \| unit	202
Development costs paid	$ 15,000,000	$ 15,500,000
Project costs incurred to date	$ 30,500,000