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Note 6 - Inventories (Details) - Inventories (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2014
May 25, 2014
Inventories [Abstract]    
Finished goods $ 14,139 $ 11,111
Raw materials 10,620 10,376
Work in progress 3,075 3,248
Total $ 27,834 $ 24,735 [1]
[1] Derived from audited financial statements.