Summary of significant accounting policies -Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands  | 
12 Months Ended | ||
|---|---|---|---|
Jan. 28, 2023  | 
Jan. 29, 2022  | 
Jan. 30, 2021  | 
|
| Summary of significant accounting policies | |||
| Stock-based compensation | $ 43,044 | $ 47,259 | $ 27,583 | 
| X | ||||||||||
- References No definition available. 
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| X | ||||||||||
- Definition Amount of noncash expense for share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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