FAIR VALUE MEASUREMENTS (Details) $ in Thousands	Apr. 30, 2018 USD ($)	Apr. 30, 2017 USD ($)
FINANCIAL LIABILITIES
Mortgages payable	$ 509,919	$ 565,978
Carrying Amount [Member]
FINANCIAL ASSETS
Cash and cash equivalents	11,891	28,819
FINANCIAL LIABILITIES
Other debt, including other debt related to assets held for sale	0	49,637
Revolving line of credit	124,000	57,050
Term loan	70,000	0
Mortgages payable	509,919	665,440
Mortgages payable related to assets held for sale	0	21,803
Fair Value [Member]
FINANCIAL ASSETS
Cash and cash equivalents	11,891	28,819
FINANCIAL LIABILITIES
Other debt, including other debt related to assets held for sale	0	49,637
Revolving line of credit	124,000	57,050
Term loan		0
Mortgages payable	510,803	680,941
Mortgages payable related to assets held for sale	0	21,861
Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instrument - interest rate swap	1,779
Recurring [Member] \| Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instrument - interest rate swap	0
Recurring [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instrument - interest rate swap	1,779
Recurring [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instrument - interest rate swap	0
Nonrecurring [Member]
Fair Value Measurements on a Nonrecurring Basis [Abstract]
Real estate investments valued at fair value	52,145	506
Real estate held for sale		10,891
Nonrecurring [Member] \| Level 1 [Member]
Fair Value Measurements on a Nonrecurring Basis [Abstract]
Real estate investments valued at fair value	0	0
Real estate held for sale		0
Nonrecurring [Member] \| Level 2 [Member]
Fair Value Measurements on a Nonrecurring Basis [Abstract]
Real estate investments valued at fair value	0	0
Real estate held for sale		0
Nonrecurring [Member] \| Level 3 [Member]
Fair Value Measurements on a Nonrecurring Basis [Abstract]
Real estate investments valued at fair value	$ 52,145	506
Real estate held for sale		$ 10,891
Measurement Input, Cap Rate [Member] \| Nonrecurring [Member]
Fair Value Measurements on a Nonrecurring Basis [Abstract]
Capitalization rate (as a percent)		0.070

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents loan receivable as presented on the statement of financial position which may include investments in land and buildings, excluding real estate considered to be inventory of the entity.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

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