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Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended	9 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 29, 2022	Oct. 29, 2022	Oct. 31, 2021	Oct. 30, 2021
Income tax expense (benefit)	$ 102,000	$ (174,000)	$ 383,000	$ 383,000	$ 297,000	$ 297,000
Tax benefit related to the reversal of previously uncertain tax positions				13,000		30,000
Tax expense resulting from shortfall				300,000
Tax expenses benefits resulting from provisional adjustments				51,000		100,000
Effective income tax reconciliation tax expense due to revaluation of deferred tax assets	$ 30,000			$ 38,000
Forgiveness Of Loan Under Paycheck Protection Programme [Member]
Tax benefits resulting from forgiveness of debt						$ 1,100,000

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

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