v3.21.1

Stock-Based Compensation - Additional Information (Detail) - USD ($)	3 Months Ended
	May 01, 2021	May 02, 2020	Jan. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding under equity incentive plans	855,000		855,000
Stock issued during period, values		$ 216,000
Reduction in value of warrants		89,000
Compensation expense		127,000
Stock-based compensation expense	$ 37,000	151,000
Number of shares granted	0
Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 37,000	$ 24,000
Unregistered Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period, shares		300,000
Reduction of warrants		300,000
2015 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding under equity incentive plans	855,000
Common stock available for future issuance	1,081,000
2015 Equity Incentive Plan [Member] | Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding under unvested restricted shares	3,000

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