Available-for-sale securities - Summary Of Investments (Details) - USD ($) $ in Thousands	Apr. 28, 2024	Jan. 28, 2024
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 12,092	$ 12,117
Total available-for-sale securities	14,101	14,454
Gross Unrealized Loss	(2,009)	(2,337)
Convertible debt
Debt Securities, Available-for-sale [Line Items]
Fair Value	12,092	12,117
Total available-for-sale securities	14,101	14,454
Gross Unrealized Loss	$ (2,009)	$ (2,337)