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Stock-Based Compensation - Additional Information (Details) - USD ($) |  |  |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Aug. 05, 2021 | Aug. 12, 2020 | Aug. 08, 2019 | Aug. 04, 2016 | Apr. 30, 2022 | May 01, 2021 | Jan. 29, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Stock compensation expense |  |  |  |  | $ 366,000 | $ 327,000 |
Non Employee Directors |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares of common stock issued |  |  |  |  | 19,570 |  |
Fair value of common stock issued |  |  |  |  | $ 84,738 |  |
RSUs |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Fully-vested shares |  |  |  |  | 313,422 |  |
Time Vested Stock Options, RSU and PSU Awards |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Unrecognized stock compensation cost |  |  |  |  | $ 2,600,000 |  |
Unrecognized stock compensation cost weighted average recognition period |  |  |  |  | 33 months |  |
2016 Plan |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Common stock reserve, shares |  |  |  | 5,725,538 |  |  |
Reduction in outstanding reserve for share granted |  |  |  | 1.00% |  |  |
Reduction in outstanding reserve for share granted, full-value award |  |  |  | 1.90% |  |  |
Shares available for grant |  |  |  |  | 3,841,133 |  |
Number of additional shares authorized to increase share reserve | 4,855,000 | 1,740,000 | 2,800,000 |  |  |  |
Share-based compensation arrangement by share-based payment award, description |  |  |  |  | In accordance with the terms of the 2016 Plan, any shares outstanding under the previous 2006 Incentive Compensation Plan (the “2006 Plan”) at August 4, 2016 that subsequently terminate, expire or are cancelled for any reason without having been exercised or paid are added back and become available for issuance under the 2016 Plan, with stock options being added back on a one-for-one basis and full-value awards being added back on a 1 to 1.9 basis. At April 30, 2022, 298,231 stock options remained outstanding under the 2006 Plan. |  |
Stock option outstanding |  |  |  |  | 4,582,841 |  | 4,621,550
Percent of shares available for awards |  |  |  | 5.00% |  |  |
Share-based compensation description |  |  |  |  | Except with respect to 5% of the shares available for awards under the 2016 Plan, no award will become exercisable unless such award has been outstanding for a minimum period of one year from its date of grant. |  |
Options granted |  |  |  |  | 2,040 | 1,518,154 |
Shares granted |  |  |  |  | 503,796 |  |
Fully-vested shares |  |  |  |  | 322,774 |  |
2016 Plan | RSUs |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted |  |  |  |  | 494,444 | 8,054 |
Fully-vested shares |  |  |  |  | 313,422 |  |
2016 Plan | Fully-vested shares |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted |  |  |  |  | 9,352 |  |
Fully-vested shares |  |  |  |  | 9,352 |  |
2006 Plan |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Stock option outstanding |  |  |  |  | 298,231 |  |

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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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