Available-for-sale securities - Summary Of Investments (Details) - USD ($) $ in Thousands	Apr. 27, 2025	Jan. 26, 2025
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 12,715	$ 12,715
Total available-for-sale securities	14,725	14,725
Gross Unrealized Loss	(2,010)	(2,010)
Convertible debt
Debt Securities, Available-for-sale [Line Items]
Fair Value	12,715	12,715
Total available-for-sale securities	14,725	14,725
Gross Unrealized Loss	$ (2,010)	$ (2,010)