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v3.23.2

Share-Based Compensation - Additional Information (Detail) - USD ($) |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 05, 2023 | Jul. 29, 2023 | Jul. 30, 2022 | Jul. 29, 2023 | Jul. 30, 2022 | Jan. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares outstanding |  | 530,449 |  | 530,449 |  | 547,199
Number of options granted |  |  |  | 0 |  | 0
Annual compensation amount |  | $ 398,000 | $ 235,000 | $ 754,000 | $ 572,000 |
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 |  | 264,949 |  | 264,949 |  |
2018 Equity Incentive Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares authorized for grant under the Plan |  | 950,000 |  | 950,000 |  |
Number of shares outstanding |  | 135,500 |  | 135,500 |  |
2022 Employee Stock Purchase Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares purchase under Employee Stock Purchase Plan |  |  |  | 4,822 |  | 5,045
Shares available for grant under the Plan |  | 30,130 |  | 30,130 |  |
Prior Employee Stock Purchase Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares purchase under Employee Stock Purchase Plan |  |  |  |  | 1,550 |
Stock Options [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Unrecognized compensation expense related to options |  | $ 0 |  | $ 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 |  |  |  | 1 year 1 month 6 days |  |
Unrecognized compensation expense related to RSUs and RSAs |  | $ 2,000,000 |  | $ 2,000,000 |  |
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 |  | 124,439 |  | 124,439 |  |
RSA [Member] | 2015 Equity Incentive Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares outstanding |  | 130,000 |  | 130,000 |  |
Performance Based RSUs [Member] | 2018 Equity Incentive Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of unvested shares |  | 188,633 |  | 188,633 |  |
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 | $ 70,000 |  |  |  |  |

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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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