DISCONTINUED OPERATIONS Reconciliation of Assets and Liabilities of Discontinued Operations (Details) - USD ($) $ in Thousands	Apr. 30, 2017	Apr. 30, 2016
Carrying amounts of major classes of liabilities included as part of discontinued operations [Abstract]
Total liabilities of the disposal groups classified as held for sale on the balance sheet	$ 30,062	$ 77,488
Discontinued Operations, Held-for-sale [Member]
Carrying amounts of major classes of assets included as part of discontinued operations [Abstract]
Property owned and intangible assets, net of accumulated depreciation and amortization	21,332	189,900
Receivable arising from straight-lining of rents	2,283	9,805
Accounts receivable		1,707
Prepaid and other assets		43
Tax, insurance and other escrow		670
Property and equipment		479
Goodwill	14	18
Total major classes of assets of the discontinued operations	23,629	202,622
Other assets included in the disposal group classified as held for sale	14,079	17,915
Total assets of the disposal groups classified as held for sale on the balance sheet	37,708	220,537
Carrying amounts of major classes of liabilities included as part of discontinued operations [Abstract]
Accounts payable and accrued expenses	52	810
Mortgages payable	16,226	67,940
Other	7,900	7,900
Total major classes of liabilities of the discontinued operations	24,178	76,650
Other liabilities included in the disposal group classified as held for sale	5,884	838
Total liabilities of the disposal groups classified as held for sale on the balance sheet	$ 30,062	$ 77,488