RECEIVABLES: (Details Textual) - USD ($)			1 Months Ended	12 Months Ended
		Feb. 09, 2015	Jan. 31, 2016	Apr. 30, 2016	Apr. 30, 2015
Proceeds from Divestiture of Businesses and Interests in Affiliates		$ 2,000,000
Revenues, Total	[1]			$ 41,664,000	$ 49,790,000
Customer Concentration Risk [Member]
Revenues, Total				$ 5,748,000
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Concentration Risk, Percentage				13.80%
Fulfillment Services [Member]
Revenues, Total	[1]			$ 34,757,000	$ 43,684,000
Fulfillment Services [Member] | Customer Concentration Risk [Member]
Loans Receivable, Net, Total				931,000
Buyer Promissory Note [Member]
Proceeds from Divestiture of Businesses and Interests in Affiliates		$ 1,600,000	$ 1,600,000	$ 1,600,000

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