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Available-for-sale securities - Summary Of Investments (Details) - USD ($) $ in Thousands | Oct. 26, 2025 | Jan. 26, 2025
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 9,520 | $ 12,715
Amortized Cost | 14,725 | 14,725
Gross Unrealized Loss | (5,205) | (2,010)
Convertible debt |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | 9,520 | 12,715
Amortized Cost | 14,725 | 14,725
Gross Unrealized Loss | $ (5,205) | $ (2,010)

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