Stock-based compensation - Stock Option Activity (Details) - Stock options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jul. 30, 2022 |
Jul. 31, 2021 |
Jul. 30, 2022 |
Jul. 31, 2021 |
|
| Share-based compensation | ||||
| Weighted-average grant date fair value (in dollars per share) | $ 149.14 | $ 109.72 | ||
| Stock options | ||||
| Stock compensation expense | $ 2,164 | $ 3,101 | $ 4,506 | $ 5,998 |
| Unrecognized compensation expense | $ 13,822 | $ 13,822 | ||
| Number of options | ||||
| Granted (in shares) | 48 | 61 | ||
| X | ||||||||||
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Details
|