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Income Taxes - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 30, 2022 | Jul. 31, 2021 | Jul. 30, 2022 | Jul. 31, 2021
Income tax expense (benefit) | $ 220,000 | $ 699,000 | $ 280,000 | $ 471,000
Tax benefit related to the reversal of previously uncertain tax positions |  |  | 13,000 | 32,000
Tax expense resulting from shortfall |  | 100,000 |  | 300,000
Tax expenses benefits resulting from provisional adjustments |  | 32,000 | 21,000 | 100,000
Effective income tax reconciliation tax expense due to revaluation of deferred tax assets | $ 13,000 |  | $ 38,000 |
Forgiveness Of Loan Under Paycheck Protection Programme [Member] |  |  |  |
Tax benefits resulting from forgiveness of debt |  | $ 1,100,000 |  | $ 1,100,000

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