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Long-term debt - Additional Information (Detail) $ in Thousands, $ in Millions |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 30, 2024 USD ($) | Jul. 14, 2023 USD ($) | Jul. 14, 2023 CAD ($) | Jan. 04, 2023 USD ($) | Jun. 26, 2021 USD ($) | Jul. 08, 2020 USD ($) | Mar. 29, 2025 USD ($) | Mar. 29, 2025 CAD ($) | Mar. 28, 2026 | Jul. 14, 2025 USD ($) | Mar. 30, 2025 | Mar. 29, 2025 CAD ($) | Jun. 03, 2024 USD ($) | Jun. 03, 2024 CAD ($) | Feb. 01, 2024 USD ($) | Feb. 01, 2024 CAD ($) | Jul. 14, 2023 CAD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding letters of credit | $ 200 |  |  |  |  |  | $ 200 |  |  |  |  |  |  |  |  |  |
Working capital ratio | 0.96 |  |  |  |  |  | 0.88 |  |  |  |  | 0.88 |  |  |  |  |
Investissement Québec [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, term |  |  |  |  |  |  | 6 years | 6 years |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  | $ 10,000 | $ 10,000 |  |  |  |  |  |  |  |  |  |
Debt Instrument Interest Rate Stated Percentage Rate |  |  |  |  |  | 3.14% | 3.14% |  |  |  |  | 3.14% |  |  |  |  |
Repayment of debt term |  |  |  |  |  | 60 months | 60 months | 60 months |  |  |  |  |  |  |  |  |
Working capital ratio | 1.01 |  |  |  |  | 1.01 |  |  |  |  |  |  |  |  |  |  |
Forgiveness of debt |  |  |  | $ 200 |  |  |  |  |  |  |  |  |  |  |  |  |
Term loan From Business Development Bank of Canada [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, term |  |  |  |  | 6 years |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt | $ 231 |  |  |  |  |  | $ 160 |  |  |  |  |  |  |  |  |  |
Debt Instrument Interest Rate Stated Percentage Rate |  |  |  |  | 8.30% |  |  |  |  |  |  |  |  |  |  |  |
Repayment of debt term |  |  |  |  | 72 months |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 400 |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Gross | $ 200 |  |  |  |  |  | $ 200 |  |  |  |  |  |  |  |  |  |
Loan From Investment Of Quebec One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, term | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt | $ 4,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Interest Rate Stated Percentage Rate |  |  |  |  |  |  | 1.41% |  |  |  |  | 1.41% |  |  |  |  |
Repayment of debt term | 60 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Working capital ratio |  |  |  |  |  |  | 1.01 |  |  |  |  | 1.01 |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 4,300 |  |  |  |  |  |  |  |  |  |
Working capital ratio to be maintained as per guidelines | 0.97 |  |  |  |  |  | 0.9 |  |  |  | 0.97 | 0.9 |  |  |  |  |
Loan From Investment Of Quebec One [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Working capital ratio to be maintained as per guidelines |  |  |  |  |  |  |  |  | 0.88 | 0.88 |  |  |  |  |  |  |
Line of credit facility maximum borrowing capacity |  |  |  |  |  |  |  |  |  | $ 10,000 |  |  |  |  |  |  |
Capital Lease Financing [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Interest Rate Stated Percentage Rate |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  | 14.00% | 14.00% | 20.00%
Capital Lease Financing [Member] | Financing Agreement One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  |  |  |  |  |  | $ 600 |  |  |  |  | $ 0.9 |  |  |  |  |
Line of credit facility maximum borrowing capacity |  | $ 3,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4.7
Proceeds from lines of credit |  | $ 2,400 | $ 3.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Lease Financing Facility With Varilease Finance [Member] | Financing Agreement Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  |  |  |  |  |  | 1,900 |  |  |  |  | 2.8 |  |  |  |  |
Line of credit facility maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,500 | $ 3.4 |
Proceeds from long term line of credit |  |  |  |  |  |  | 2,400 | $ 3.3 |  |  |  |  |  |  |  |  |
Capital Lease Financing Facility With Varilease Finance [Member] | Financing Agreement Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Interest Rate Stated Percentage Rate |  |  |  |  |  |  |  |  |  |  |  |  | 14.00% | 14.00% |  |  |
Long-term Debt, Gross |  |  |  |  |  |  | 500 |  |  |  |  | $ 0.7 |  |  |  |  |
Line of credit facility maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 600 | $ 0.8 |  |  |
Proceeds from long term line of credit |  |  |  |  |  |  | $ 600 | $ 0.8 |  |  |  |  |  |  |  |  |

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