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Operating Results by Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 01, 2012	Dec. 03, 2011	Dec. 01, 2012	Dec. 03, 2011
Segment Reporting Information [Line Items]
Net sales	$ 36,603	$ 39,138	$ 72,253	$ 80,649
Gross Profit	10,742	11,690	21,388	24,392
EDG
Segment Reporting Information [Line Items]
Net sales	26,186	28,022	51,813	58,751
Gross Profit	7,930	8,546	15,930	18,217
Canvys
Segment Reporting Information [Line Items]
Net sales	10,417	11,116	20,440	21,898
Gross Profit	$ 2,812	$ 3,144	$ 5,458	$ 6,175

X

- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ 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 210.5-03.1,2)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ 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

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