Number of shares granted percentage.

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Reservation of shares under employee stock purchase plan.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Amount of noncash expense for share-based payment arrangement.

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Discount rate from fair value on purchase date that participants pay for shares.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Share-Based Compensation - Additional Information (Detail) - USD ($)		3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 05, 2023	Jul. 29, 2023	Jul. 30, 2022	Jul. 29, 2023	Jul. 30, 2022	Jan. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares outstanding		530,449		530,449		547,199
Number of options granted				0		0
Annual compensation amount		$ 398,000	$ 235,000	$ 754,000	$ 572,000
Reservation of shares under Stock Purchase Plan						40,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Stock Purchase Plan discount rate						15.00%
2007 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares outstanding		264,949		264,949
2018 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for grant under the Plan		950,000		950,000
Number of shares outstanding		135,500		135,500
2022 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchase under Employee Stock Purchase Plan				4,822		5,045
Shares available for grant under the Plan		30,130		30,130
Prior Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchase under Employee Stock Purchase Plan					1,550
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to options		$ 0		$ 0
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense to be recognized, Weighted average period				1 year 1 month 6 days
Unrecognized compensation expense related to RSUs and RSAs		$ 2,000,000		$ 2,000,000
Restricted Stock Units (RSUs) [Member] \| 2018 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of unvested shares		124,439		124,439
RSA [Member] \| 2015 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares outstanding		130,000		130,000
Performance Based RSUs [Member] \| 2018 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of unvested shares		188,633		188,633
Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of number of shares granted				25.00%
Annual compensation amount	$ 70,000