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Note 14 - Business Segment Reporting (Details) - Sales by Geograhic Area (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Feb. 23, 2014
Feb. 24, 2013
Feb. 23, 2014
Feb. 24, 2013
Note 14 - Business Segment Reporting (Details) - Sales by Geograhic Area [Line Items]        
Segment sales $ 126,379 $ 117,867 $ 355,884 $ 334,595
TAIWAN, PROVINCE OF CHINA
       
Note 14 - Business Segment Reporting (Details) - Sales by Geograhic Area [Line Items]        
Segment sales 2,600 2,900 27,200 28,700
CANADA
       
Note 14 - Business Segment Reporting (Details) - Sales by Geograhic Area [Line Items]        
Segment sales 12,100 7,400 31,800 19,700
CHINA
       
Note 14 - Business Segment Reporting (Details) - Sales by Geograhic Area [Line Items]        
Segment sales 1,300 900 6,600 4,500
INDONESIA
       
Note 14 - Business Segment Reporting (Details) - Sales by Geograhic Area [Line Items]        
Segment sales 2,200 4,100 7,100 17,600
JAPAN
       
Note 14 - Business Segment Reporting (Details) - Sales by Geograhic Area [Line Items]        
Segment sales 1,800 1,500 7,100 7,400
BELGIUM
       
Note 14 - Business Segment Reporting (Details) - Sales by Geograhic Area [Line Items]        
Segment sales 11,100 10,600 13,100 15,200
All Other Countries [Member]
       
Note 14 - Business Segment Reporting (Details) - Sales by Geograhic Area [Line Items]        
Segment sales $ 2,200 $ 6,900 $ 12,300 $ 15,700