Intangible assets (Schedule of major components) (Details) - USD ($) $ in Thousands |
Dec. 30, 2023 |
Dec. 31, 2022 |
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Cost | $ 27,324 | $ 27,324 |
| Accumulated amortization | 5,463 | 3,678 |
| Net book value | 21,861 | 23,646 |
| Brand names [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Cost | 25,073 | 25,073 |
| Accumulated amortization | 4,517 | 2,845 |
| Net book value | 20,556 | 22,228 |
| Customer relationships [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Cost | 2,251 | 2,251 |
| Accumulated amortization | 946 | 833 |
| Net book value | $ 1,305 | $ 1,418 |