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Stock-Based Compensation - Narrative (Detail) - USD ($) |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Jul. 01, 2022 | Jul. 01, 2021 | Jul. 31, 2022 | Aug. 01, 2021 | Sep. 16, 2015
Performance Based Restricted Stock Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Common stock awarded |  |  | 0 |  |
Performance Based Restricted Stock Units [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  |  | $ 2,000 | $ 20,000 |
Time-Based Restricted Stock Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Common stock awarded |  |  | 0 |  |
Remaining unrecognized compensation expense |  |  | $ 895,000 |  |
Weighted average period over which unrecognized compensation expense is expected to be recognized |  |  | 1 year 4 months 24 days |  |
Fair value of units expected to vest |  |  | $ 887,000 |  |
Time-Based Restricted Stock Units [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  |  | 166,000 | 184,000 |
Common Stock Awards [Member] | Outside Directors [Member] | Immediate Vesting [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Common stock awarded | 19,753 | 4,312 |  |  |
Price Per Share | $ 4.24 | $ 16.24 |  |  |
Common Stock Awards [Member] | Selling, General and Administrative Expenses [Member] | Outside Directors [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  |  | $ 84,000 | $ 70,000 |
2015 Equity Incentive Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of common stock authorized for issuance |  |  |  |  | 1,200,000
Number of shares available for future equity based grants |  |  | 558,375 |  |

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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