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Note 14 - Business Segment Reporting (Detail) - Sales by Geograhic Area (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 24, 2013 | Feb. 26, 2012 | Feb. 24, 2013 | Feb. 26, 2012
Segment sales | $ 117,867 | $ 80,064 | $ 334,595 | $ 234,935
Taiwan [Member] |  |  |  |
Segment sales | 2,900 | 2,000 | 28,700 | 20,900
Canada [Member] |  |  |  |
Segment sales | 7,400 | 5,400 | 19,700 | 15,200
Indonesia [Member] |  |  |  |
Segment sales | 4,100 | 5,400 | 17,600 | 19,300
Belgium [Member] |  |  |  |
Segment sales | 10,600 | 6,000 | 15,200 | 14,100
Japan [Member] |  |  |  |
Segment sales | 1,500 | 1,600 | 7,400 | 7,800
All Other Countries [Member] |  |  |  |
Segment sales | $ 7,800 | $ 4,500 | $ 20,200 | $ 14,500

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- Definition Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration