ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Jan. 31, 2017	Apr. 30, 2016
Accounts Payable and Accrued Liabilities Disclosure [Line Items]
Accounts payable, net and accrued expenses	$ 6,963	$ 8,453
Fulfillment services [Member]
Accounts Payable and Accrued Liabilities Disclosure [Line Items]
Accounts payable, net and accrued expenses	5,807	6,712
Real Estate Operations [Member]
Accounts Payable and Accrued Liabilities Disclosure [Line Items]
Accounts payable, net and accrued expenses	891	1,535
Corporate Segment [Member]
Accounts Payable and Accrued Liabilities Disclosure [Line Items]
Accounts payable, net and accrued expenses	$ 265	$ 206