v3.21.1

Income Taxes - Additional Information (Detail)	12 Months Ended
	Jan. 30, 2021 USD ($)
Income Tax Contingency [Line Items]
Federal statutory income tax rate	21.00%
Federal income tax net operating loss carryforwards	$ 26,000,000
Federal operating loss carryforwards expiration year	2027
State net operating loss carryforwards	$ 6,500,000
State operating loss carryforwards expiration year	2023
Percentage of change in ownership	50.00%
Net operating loss carryforwards limitation on use ownership change period	3 years
Federal and state net operating loss carryforwards limitations on use	$ 17,300,000
Cumulative effect on retained earnings	0
Unrecognized tax benefits	0
Continuing Operations [Member]
Income Tax Contingency [Line Items]
Federal income tax net operating loss carryforwards	17,800,000
Discontinued Operations [Member]
Income Tax Contingency [Line Items]
Federal income tax net operating loss carryforwards	$ 8,200,000
Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year	2016
Latest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year	2020
Tax Year After 2017 [Member]
Income Tax Contingency [Line Items]
Federal income tax net operating loss carryforwards, indefinitely carried forward	$ 17,000,000
Tax Year Prior to 2018 [Member]
Income Tax Contingency [Line Items]
Federal income tax net operating loss carryforwards, subject to expiration	$ 9,000,000

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