MORTGAGES PAYABLE AND CONSTRUCTION DEBT, LINE OF CREDIT (Details)	Apr. 30, 2016 property
Line of Credit Facility [Line Items]
Number of properties not encumbered	29
Secured Debt [Member]
Line of Credit Facility [Line Items]
Number of properties securing line of credit	17

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.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration