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Employee Stock Plans - Narrative (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 01, 2023 | Nov. 30, 2021 | Jul. 31, 2024 | Jul. 31, 2023 | Jul. 31, 2024 | Jul. 31, 2023 | Nov. 16, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Stock-based compensation |  |  | $ 29,822 | $ 24,776 | $ 58,100 | $ 48,922 |
RSUs |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Award cliff vesting period |  |  |  |  | 4 years |  |
RSUs | Minimum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Award cliff vesting period |  |  |  |  | 1 year |  |
Employee Stock | Common Stock |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Issuance of common stock under employee stock purchase plan (in shares) |  |  | 148,914 |  |  |  |
2021 Equity Incentive Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares reserved for future issuance (in shares) |  | 25,660,249 |  |  |  |  |
Shares reserved for future issuance, period of automatic increase |  | 10 years |  |  |  |  |
Shares reserved for future issuance, increase as percentage of total shares outstanding |  | 5.00% |  |  |  |  |
Shares reserved for future issuance, additional shares reserved (in shares) | 5,010,520 |  |  |  |  |  |
Employee Stock Purchase Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares reserved for future issuance, period of automatic increase |  | 10 years |  |  |  |  |
Shares reserved for future issuance, increase as percentage of total shares outstanding |  | 1.00% |  |  |  |  |
Shares reserved for future issuance, additional shares reserved (in shares) | 1,002,104 |  |  |  |  |  |
Automatic increase in ESPP (in shares) |  |  |  |  |  |  | 2,737,000
Purchase price as a percentage of market value |  | 85.00% |  |  |  |  |
Employee Stock Purchase Plan | Employee Stock |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares reserved for issuance (in shares) |  |  |  |  |  |  | 1,825,000
Stock-based compensation |  |  | $ 500 | $ 600 | $ 1,300 | $ 1,400 |
Share-based compensation amount withheld from employees for future purchase |  |  | $ 1,200 |  | $ 1,200 |  |
Number available for grant (in share) |  |  | 4,208,260 |  | 4,208,260 |  |

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