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RECEIVABLES (Details) - USD ($)
$ in Thousands
Oct. 31, 2017
Apr. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable, Gross $ 6,710 $ 6,727
Less allowance for doubtful accounts (332) (348)
Accounts Receivable, Net 6,378 6,379
Fulfillment services [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable, Gross 6,657 6,725
Real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable, Gross 12 0
Corporate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable, Gross $ 41 $ 2