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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
--- | ---
Mar. 26, 2022 | Mar. 27, 2021 | Mar. 28, 2020
Segment Reporting [Abstract] |  |  |
Unadjusted gross profit | $ 79,022 | $ 57,018 | $ 68,284
Inventory provisions | (383) | (736) | (475)
Other unallocated costs | (2,445) | 38 | (3,586)
Adjustment of intercompany profit | 26 | 30 | 254
Gross profit | $ 76,220 | $ 56,350 | $ 64,477

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