Note 14 - Business Segment Reporting (Details)	6 Months Ended
	Nov. 24, 2013	Nov. 25, 2012
Note 14 - Business Segment Reporting (Details) [Line Items]
Number of Operating Segments	3
Entity-Wide Revenue Major Customer Number	5
Entity-Wide Revenue Top Customers Percentage	43.00%	36.00%
Customer 1 [Member] | Food Products Technology [Member]
Note 14 - Business Segment Reporting (Details) [Line Items]
Entity-Wide Revenue Top Customers Percentage	20.00%	13.00%
Customer 2 [Member] | Food Products Technology [Member]
Note 14 - Business Segment Reporting (Details) [Line Items]
Entity-Wide Revenue Top Customers Percentage	11.00%	10.00%
Food Products Technology [Member]
Note 14 - Business Segment Reporting (Details) [Line Items]
Entity-Wide Revenue Major Customer Number	6	2