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Long-term debt - Summary of Long Term Debt (Detail) - USD ($) $ in Thousands | Mar. 27, 2021 | Mar. 28, 2020
--- | --- | ---
Debt Instrument [Line Items] |  |
Obligations under finance leases | $ 273 |
Long-term debt and Capital lease obligations | 26,022 | $ 16,281
Long-term debt: |  |
Current portion of long-term debt | 2,960 | 64
Long-term debt | 23,062 | 16,217
Term Loan From Investment Of Quebec Annual Interest Rate Three Point One Four Percent [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 9,956 |
Secured Debt [Member] | Furniture And Equipment [Member] |  |
Debt Instrument [Line Items] |  |
Obligations under finance leases | 273 | 187
Cash Contribution one [Member] | Montel [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 1,887 | 2,109
Cash Contribution Two [Member] | Montel [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 1,573 | 1,757
Term Loan Facility Repayable At October Two Thousand Twenty Two [Member] | Term Loan From SLR Credit Solutions CDOR Plus Eight Point Two Five Percent [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 12,333 | $ 12,228

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