MORTGAGES PAYABLE AND CONSTRUCTION DEBT, LINE OF CREDIT (Details) - Secured Debt [Member]	Apr. 30, 2015 Property
Line of Credit Facility [Line Items]
Number of properties securing line of credit	15
Number of properties not encumbered	48

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.

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