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v3.25.1

Share-Based Compensation - Additional Information (Detail) - USD ($) |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 11, 2024 | Apr. 30, 2025 | Apr. 27, 2024 | Jan. 31, 2025 | Jun. 06, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares outstanding |  | 361,549 |  | 421,699 |
Number of options granted |  | 0 | 0 |  |
Annual compensation amount |  | $ 306,000 | $ 325,000 |  |
Reservation of shares under Stock Purchase Plan |  | 40,000 |  |  |
Employee Stock Purchase Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Employee Stock Purchase Plan discount rate |  | 15.00% |  |  |
2007 Equity Incentive Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares outstanding |  | 118,449 |  |  |
2018 Equity Incentive Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares outstanding |  | 130,500 |  |  |
Shares available for grant under the Plan |  |  |  |  | 600,000
2018 Equity Incentive Plan [Member] | Minimum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares available for grant under the Plan |  |  |  |  | 950,000
2018 Equity Incentive Plan [Member] | Maximum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares available for grant under the Plan |  |  |  |  | 1,550,000
2022 Employee Stock Purchase Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares available for grant under the Plan |  | 6,045 |  |  |
Prior Employee Stock Purchase Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares purchase under Employee Stock Purchase Plan |  | 6,463 |  |  |
Stock Options [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized compensation expense related to options |  | $ 0 |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized compensation expense to be recognized, Weighted average period |  | 2 years 4 months 24 days |  |  |
Unrecognized compensation expense related to RSUs and RSAs |  | $ 1,900,000 |  |  |
Restricted Stock Units (RSUs) [Member] | 2018 Equity Incentive Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of unvested shares |  | 196,147 |  |  |
RSA [Member] | 2015 Equity Incentive Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares outstanding |  | 112,600 |  |  |
Performance Based RSUs [Member] | 2018 Equity Incentive Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of unvested shares |  | 60,615 |  |  |
Restricted Stock Award [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of number of shares granted |  | 25.00% |  |  |
Annual compensation amount | $ 72,800 |  |  |  |

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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