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INVESTMENTS (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended
Aug. 29, 2015
Aug. 30, 2014
May. 30, 2015
May. 30, 2014
Investment [Line Items]        
Investment, less than twelve months $ 6,342   $ 23,692  
Investment, greater than twelve months 10,511   11,549  
Available for sale - equity securities 500   $ 600  
Available for sale securities - gross unrealized gains and losses 100      
Available for sale securities - gross realized gains and losses 100      
Net unrealized holding gains included in AOCI 100 $ 100    
Less than [Member]        
Investment [Line Items]        
Available for sale securities - gross unrealized gains and losses   100    
Available for sale securities - gross realized gains and losses   $ 100    
Time Deposits and Cetificate of Deposits[Member]        
Investment [Line Items]        
Investments, carrying value 16,300     $ 34,700
Investment, less than twelve months 6,300     23,700
Investment, greater than twelve months $ 10,000     $ 10,900