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Summary of Significant Accounting Policies - Fair value of financial instruments (Details) - USD ($) $ in Thousands | Oct. 28, 2023 | Jan. 28, 2023 | Oct. 29, 2022
--- | --- | --- | ---
Significant Accounting Policies [Line Items] |  |  |
Amortized Cost |  | $ 66,845 | $ 72,722
Gross Unrealized Gains |  | 0 | 0
Gross Unrealized Losses |  | 292 | 813
Fair Market Value |  | 66,553 | 71,909
Fair Value, Inputs, Level 1 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Cash equivalents | $ 115,100 | 313,200 | 21,700
Corporate bonds | Fair Value, Inputs, Level 2 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Amortized Cost |  | 66,845 | 72,522
Gross Unrealized Gains |  | 0 | 0
Gross Unrealized Losses |  | 292 | 813
Fair Market Value |  | $ 66,553 | 71,709
Municipal bonds | Fair Value, Inputs, Level 2 |  |  |
Significant Accounting Policies [Line Items] |  |  |
Amortized Cost |  |  | 200
Gross Unrealized Gains |  |  | 0
Gross Unrealized Losses |  |  | 0
Fair Market Value |  |  | $ 200

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