Financial risk management objectives and policies - Interest Rate Risk Narrative (Details) - CAD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Mar. 29, 2026 |
Mar. 30, 2025 |
|
| Mainland China Facilities | ||
| Disclosure of credit risk exposure [line items] | ||
| Borrowings, interest rate | 3.10% | |
| Mainland China Facilities | Interest rate risk | ||
| Disclosure of credit risk exposure [line items] | ||
| Borrowings, interest rate | 2.93% | |
| Japan Facility | Interest rate risk | ||
| Disclosure of credit risk exposure [line items] | ||
| Borrowings, interest rate | 4.00% | |
| Revolving Facility | Interest rate risk | ||
| Disclosure of credit risk exposure [line items] | ||
| Borrowings, interest rate | 4.44% | |
| Term Loan | Interest rate risk | ||
| Disclosure of credit risk exposure [line items] | ||
| Borrowings, interest rate | 7.16% | |
| Reasonably possible increase in average interest rate | 1.00% | |
| Increase in interest expense from change in average interest rate | $ 4.2 | $ 4.1 |