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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