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Operating Results by Segment (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Aug. 30, 2014 | Aug. 31, 2013
Segment Reporting Information [Line Items] |  |
Net Sales | $ 34,699 | $ 34,257
Gross Profit | 10,658 | 10,192
EDG |  |
Segment Reporting Information [Line Items] |  |
Net Sales | 27,438 | 25,479
Gross Profit | 8,686 | 7,859
Canvys |  |
Segment Reporting Information [Line Items] |  |
Net Sales | 5,968 | 7,446
Gross Profit | 1,656 | 1,903
Healthcare [Member] |  |
Segment Reporting Information [Line Items] |  |
Net Sales | 1,293 | 1,332
Gross Profit | $ 316 | $ 430

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