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Background and Basis of Presentation - Additional Information (Details) $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Feb. 02, 2021 USD ($) | Apr. 30, 2020 USD ($) | Jan. 02, 2021 USD ($) Segment | Dec. 28, 2019 USD ($) | May 01, 2020 USD ($)
Number of operating segments | Segment |  |  | 3 |  |
Net loss |  |  | $ (8,498) | $ (11,964) |
Current assets |  |  | 6,941 | 8,839 |
Current liabilities |  |  | 20,597 | $ 17,573 |
Working capital |  |  | (13,656) |  |
Securities Purchase Agreement | Registered Direct Offering | Common Stock | Subsequent Event |  |  |  |  |
Gross proceeds before deducting placement agent fees and other offering expenses | $ 6,000 |  |  |  |
Revolving Credit Facility |  |  |  |  |
Availability under revolving credit facility |  |  | 1,500 |  |
Customer Advance Payments |  |  |  |  |
Advance received against provision of future services |  | $ 1,168 | $ 1,168 |  |
Promissory Note | PPP Loan |  |  |  |  |
Loan amount |  |  |  |  | $ 1,872
Prestige Capital |  |  |  |  |
Percentage of advance funding on unpaid customer's invoice |  |  | 80.00% |  |

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