Fair value measurements (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 03, 2024	Jan. 28, 2023
Fair value measurements
Defined Benefit Plan, Tax Status [Extensible Enumeration]	Non-qualified deferred compensation plan	Non-qualified deferred compensation plan
Fair Value, Inputs, Level 2
Fair value measurements
Fair value of financial liabilities	$ 42,653	$ 37,501