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Income Taxes - Additional Information (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 31, 2021 | Aug. 01, 2020 | Jul. 31, 2021 | Aug. 01, 2020 | Jan. 30, 2021
Income Taxes [Line Items] |  |  |  |  |
Provision for income taxes | $ 426,000 | $ 24,000 | $ 454,000 | $ 44,000 |
U.S. federal corporate tax rate |  |  | 21.00% |  |
Federal net operating loss carry forwards expiration period minimum |  |  |  |  | 2022
Federal net operating loss carry forwards expiration period maximum |  |  |  |  | 2037
Federal |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Net operating loss carryforwards subject to expiration |  |  |  |  | $ 158,200,000
Net operating loss carryforwards not subject to expiration |  |  |  |  | 43,100,000
State and Local Jurisdiction |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Net operating loss carryforwards |  |  |  |  | $ 111,300,000
State and Local Jurisdiction | Minimum |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Net operating loss carryforwards expiration year |  |  |  |  | 2021
State and Local Jurisdiction | Maximum |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Net operating loss carryforwards expiration year |  |  |  |  | 2041

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