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Segmented Information - Schedule of Reconciliations of Segments Gross Profits and Certain Unallocated Costs to Consolidated Gross Profits (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 28, 2015 | Mar. 29, 2014 | Mar. 30, 2013
Segment Reporting [Abstract] |  |  |
Unadjusted gross profit | $ 123,518 | $ 119,873 | $ 131,166
Inventory provisions | (3,151) | (3,010) | (2,763)
Other unallocated costs | (2,551) | (2,801) | (2,527)
Adjustment of intercompany profit | (11) | 605 | 298
Adjusted gross profit | $ 117,805 | $ 114,667 | $ 126,174

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- 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=26872669&loc=d3e20235-122688 + Details
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