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Stock-Based Compensation - Narrative (Detail) - USD ($) |  |  |  |  | 6 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Oct. 01, 2021 | Jul. 01, 2021 | Oct. 01, 2020 | Jul. 01, 2020 | Oct. 31, 2021 | Nov. 01, 2020 | Sep. 16, 2015
Performance-Based Restricted Stock Units [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Fair value of units expected to vest |  |  |  |  | $ 951,000 |  |
Remaining unrecognized compensation cost |  |  |  |  | $ 1,100,000 |  |
Weighted average period over which unrecognized compensation cost is expected to be recognized |  |  |  |  | 2 years 7 months 6 days |  |
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 |  |  |  |  | $ 109,000 | $ 89,000 |
Time-Based Restricted Stock Units [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Fair value of units expected to vest |  |  |  |  | 2,800,000 |  |
Remaining unrecognized compensation cost |  |  |  |  | $ 1,600,000 |  |
Weighted average period over which unrecognized compensation cost is expected to be recognized |  |  |  |  | 2 years |  |
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 |  |  |  |  | $ 446,000 | 245,000 |
Common Stock Awards [Member] | Outside Directors [Member] | Immediate Vesting [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares/units granted | 6,426 | 4,312 | 5,193 | 7,000 |  |  |
Price Per Share | $ 13.03 | $ 16.24 | $ 13.48 | $ 10.00 |  |  |
Common Stock Awards [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation expense |  |  |  |  | $ 154,000 | $ 140,000 |
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 |  |  |  |  | 470,947 |  |

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