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VALUATION AND QUALIFYING ACCOUNTS (Details Narrative) - USD ($)
$ in Thousands
 12 Months Ended
May 28, 2016
May 30, 2015
May 31, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]      
Inventory write-down $ 700 $ 200 $ 800
PMT [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Inventory write-down 300    
Canvys [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Inventory write-down 300    
Healthcare [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Inventory write-down $ 100