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Operating Results by Segment (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2013 | Dec. 01, 2012 | Nov. 30, 2013 | Dec. 01, 2012
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | $ 35,436 | $ 36,603 | $ 69,693 | $ 72,253
Gross Profit | 11,007 | 10,742 | 21,199 | 21,388
EDG |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 26,163 | 26,186 | 51,642 | 51,813
Gross Profit | 8,507 | 7,930 | 16,366 | 15,930
Canvys |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 9,273 | 10,417 | 18,051 | 20,440
Gross Profit | $ 2,500 | $ 2,812 | $ 4,833 | $ 5,458

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