Note 14 - Business Segment Reporting (Detail) - Operations by segment consisted of the following: (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 25, 2012	Nov. 27, 2011	Nov. 25, 2012	Nov. 27, 2011
Segment location	$ 114,654	$ 81,570	$ 216,728	$ 154,871
Taiwan [Member]
Segment location	12,900	9,600	25,800	19,000
Indonesia [Member]
Segment location	7,400	6,400	13,500	13,900
Canada [Member]
Segment location	6,100	4,900	12,300	9,900
Japan [Member]
Segment location	2,800	3,800	5,900	6,200
Belgium [Member]
Segment location	1,600	6,300	4,600	8,100
All Other Countries [Member]
Segment location	$ 7,400	$ 5,700	$ 12,500	$ 9,700