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Accounts and note receivable - Narrative (Details) - USD ($) $ in Thousands |  |  |  | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jul. 07, 2026 | Jan. 07, 2026 | Jul. 07, 2025 | Feb. 23, 2025 | May 26, 2024 | Jan. 07, 2025
Concentration Risk [Line Items] |  |  |  |  |  |
Note receivable |  |  |  | $ 10,000 |  | $ 10,000
Note receivable, variable interest rate |  |  |  |  |  | 1.00%
Note receivable, effective interest rate |  |  |  | 8.50% |  |
Note receivable, discount |  |  |  | $ 305 |  | $ 410
Current portion of note receivable |  |  |  | 8,000 | $ 0 |
Noncurrent portion of note receivable |  |  |  | 1,695 |  |
Interest income |  |  |  | $ 105 |  |
Forecast |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Proceeds from collection of notes receivable | $ 2,000 | $ 4,000 | $ 4,000 |  |  |
Customer A | Accounts receivable | Customer concentration risk |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk percentage |  |  |  | 47.00% | 34.00% |
Customer B | Accounts receivable | Customer concentration risk |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk percentage |  |  |  | 19.00% | 18.00% |

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