RECEIVABLES (Details) - USD ($) $ in Thousands	Jul. 31, 2018	Apr. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	$ 6,243	$ 6,215
Less allowance for doubtful accounts	(377)	(314)
Accounts Receivable, Net	5,866	5,901
Fulfillment service [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	6,196	6,189
Real estate operations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	26	10
Corporate operations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	$ 21	$ 16