Financial risk management objectives and policies - Liquidity Risk Narrative (Details) - Short-term borrowings - CAD ($) $ in Millions |
Apr. 14, 2020 |
Mar. 29, 2026 |
|---|---|---|
| Disclosure of credit risk exposure [line items] | ||
| Line of credit facility, maximum borrowing capacity | $ 10.0 | |
| Line of credit facility, maximum term | 12 months | |
| Line of credit, annual percentage | 1.00% | |
| Line of credit, outstanding amount | $ 9.7 | |
| Mainland China Facilities | ||
| Disclosure of credit risk exposure [line items] | ||
| Line of credit, outstanding amount | 15.8 | |
| Europe facilities | ||
| Disclosure of credit risk exposure [line items] | ||
| Line of credit, outstanding amount | $ 3.9 |