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v3.23.1

Employee Benefits and Stock-based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 2 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 30, 2022 | Nov. 30, 2021 | Jun. 30, 2021 | Jun. 30, 2021 | Apr. 30, 2022 | Apr. 30, 2021 | Jan. 31, 2023 | Jan. 31, 2022 | Jan. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Contribution expense |  |  |  |  |  |  | $ 0.8 | $ 0.6 |
Voting power of all classes of company's shares |  |  |  |  |  |  | 10.00% |  |
Accrued stock-based compensation expense liabilities |  |  |  |  |  |  | $ 4.6 | $ 7.8 |
Closing price of stock |  |  |  |  |  |  | $ 89.84 |  |
Mr. Casey Eichler [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Acceleration of vesting of shares of unvested equity awards | 35,703 |  |  |  |  |  |  |  |
Additional stock-based compensation expense, net related to departure recognized |  |  |  |  |  |  | $ 1.7 |  |
Stock options [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Option's term of up to 10 years from grant date |  |  |  |  |  |  | 10 years | 10 years | 10 years
Vesting schedule |  |  |  |  |  |  | vest 25% on the first anniversary service date of the grant and the remainder vest ratably over the following 36 months. |  |
Total unrecognized compensation cost, stock options |  |  |  |  |  |  | $ 15.9 |  |
Weighted average recognition period |  |  |  |  |  |  | 1 year 10 months 6 days |  |
Restricted Stock and Restricted Stock Units [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Vesting schedule |  |  |  |  |  |  | 1/4th of the shares on the first anniversary service date of the grant and 1/16th of the shares vest every 3 months thereafter, so as to be 100% vested on the fourth anniversary of the vesting commencement date. |  |
Restricted stock units [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Weighted average recognition period |  |  |  |  |  |  | 2 years 4 months 28 days |  |
Total unrecognized compensation cost, restricted stock units |  |  |  |  |  |  | $ 189.7 |  |
Aggregate intrinsic value of unvested restricted stock units |  |  |  |  |  |  | 231.2 |  |
Total fair value of vesting dates of restricted stock units vested |  |  |  |  |  |  | $ 122.0 | $ 192.5 | $ 69.0
2021 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Ordinary shares reserved for issuance |  |  | 1,350,000 |  |  |  |  |  |
Maximum number of ordinary shares reserved for issuance |  |  | 6,834,208 | 6,834,208 |  |  |  |  |
2012 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Additional ordinary shares reserved for issuance |  |  |  | 0 |  | 1,599,634 |  |  |
2017 Stock Option Plan [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Additional ordinary shares reserved for issuance |  | 0 |  |  |  |  |  |  |
Incentive stock options granted to 10% ownership [Member] | Stock options [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Purchase price of ordinary shares, percentage |  |  |  |  |  |  | 110.00% |  |
Non statutory stock options and incentive stock options granted to less than 10% ownership [Member] | Stock options [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Purchase price of ordinary shares, percentage |  |  |  |  |  |  | 100.00% |  |
ESPP [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Purchase price of ordinary shares, percentage |  |  |  |  |  |  | 85.00% | 85.00% | 85.00%
Percentage of salary contribution by employees |  |  |  |  |  |  | 15.00% |  |
Additional ordinary shares reserved for issuance |  |  |  |  | 466,285 | 444,343 |  |  |
ESPP [Member] | Scenario, plan automatically increased by the lessor of [Member] |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Annual increase in ordinary shares for available for future issuance |  |  |  |  | 1,500,000 | 1,500,000 |  |  |
Annual shares increase for future issuance by percentage under 2012 employee stock purchase plan |  |  |  |  | 1.25% | 1.25% |  |  |

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