Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Details Narrative)

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Related Party Transactions (Details Narrative) - USD ($)
 2 Months Ended 12 Months Ended
Jun. 30, 2016
Apr. 30, 2016
Apr. 30, 2015
Apr. 30, 2013
Related Party Transactions (Textual) [Abstract]        
Sale leaseback, gain on sale of assets   $ 72,000 $ 71,000  
Sale leaseback, portion of deferred gain in accrued liabilities   159,000 282,000  
Sale leaseback, portion of deferred gain in other long term liabilities   107,000 179,000  
Sheerr Memory        
Related Party Transactions (Textual) [Abstract]        
Purchase of inventories for resale   381,000 1,348,000  
Accounts payable   11,000 $ 15,000  
Trade terms with related party     Sheerr Memory offers the Company trade terms of net 30 days and all invoices are settled in the normal course of business. No interest is paid.  
Sheerr Memory | Subsequent Event        
Related Party Transactions (Textual) [Abstract]        
Purchase of inventories for resale $ 19,000      
Mr. Sheerr | Note and Security Agreement        
Related Party Transactions (Textual) [Abstract]        
Frequency of periodic payment       Monthly
Date of first required payment, principal amount       Nov. 15, 2013
Sale leaseback transaction, value       $ 500,000
Sale leaseback transaction, lease terms       The Company entered into an agreement with Mr. Sheerr to leaseback the equipment and furniture that was sold to Mr. Sheerr on October 31, 2013. The lease is for a term of 60 months and the Company is obligated to pay approximately $7,500 per month for the term of the lease. The Company has an option to extend the lease for an additional 2 year period.
Sale leaseback, monthly rental payments       $ 7,500
Sale leaseback, gain on sale of assets       103,000
Sale leaseback, deferred gain       $ 358,000
Sale leaseback, portion of deferred gain in accrued liabilities   72,000 $ 72,000  
Sale leaseback, portion of deferred gain in other long term liabilities   107,000 179,000  
Keystone Memory Group        
Related Party Transactions (Textual) [Abstract]        
Purchase of inventories for resale   1,181,000 1,150,000  
Accounts payable   $ 190,000 $ 32,000  
Trade terms with related party     Keystone Memory offers the Company trade terms of immediately due and all invoices are settled in the normal course of business. No interest is paid.  
Keystone Memory Group | Subsequent Event        
Related Party Transactions (Textual) [Abstract]        
Purchase of inventories for resale $ 290,000