RECEIVABLES: (Details Textual) - USD ($)		12 Months Ended
		Apr. 30, 2017	Apr. 30, 2016	Feb. 28, 2015
Revenues, Total	[1]	$ 42,368,000	$ 41,664,000
Accounts Receivable, Net		6,379,000	7,271,000
Secured Promissory Note [Member]
Debt Instrument, Face Amount				$ 1,600,000
Revolving Credit Facility [Member]
Debt Instrument, Face Amount				$ 2,000,000
Customer Concentration Risk [Member]
Revenues, Total		$ 4,709,000
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Concentration Risk, Percentage		11.10%
Fulfillment Services [Member]
Revenues, Total	[1]	$ 31,030,000	$ 34,757,000
Fulfillment Services [Member] | Customer Concentration Risk [Member]
Accounts Receivable, Net		$ 746,000

[1] Revenue information provided for each segment includes amounts grouped as Other in the accompanying consolidated statements of operations. Corporate and Other is net of intercompany eliminations.