ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Oct. 31, 2017	Apr. 30, 2017
Accounts Payable and Accrued Liabilities Disclosure [Line Items]
Accounts payable, net and accrued expenses	$ 7,271	$ 7,035
Fulfillment services [Member]
Accounts Payable and Accrued Liabilities Disclosure [Line Items]
Accounts payable, net and accrued expenses	5,002	5,637
Real estate
Accounts Payable and Accrued Liabilities Disclosure [Line Items]
Accounts payable, net and accrued expenses	1,942	1,138
Corporate
Accounts Payable and Accrued Liabilities Disclosure [Line Items]
Accounts payable, net and accrued expenses	$ 327	$ 260

Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15(1),(5))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.15)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant