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Background - Additional Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 28, 2019 USD ($) | Sep. 29, 2018 USD ($) | Sep. 28, 2019 USD ($) Segment | Sep. 29, 2018 USD ($) | Dec. 29, 2018 USD ($)
Number of operating segments | Segment |  |  | 3 |  |
Reverse stock split |  |  | On April 19, 2019, a 1-for-5 reverse stock split took effect |  |
Reverse stock split, conversion ratio |  |  | 0.2 |  |
Net loss | $ (1,958) | $ (1,260) | $ (5,357) | $ (4,111) |
Current assets | 9,244 |  | 9,244 |  | $ 8,937
Current liabilities | $ 11,563 |  | 11,563 |  | $ 9,684
Working capital |  |  | $ (2,319) |  |
Prestige Capital |  |  |  |  |
Percentage of advance funding on unpaid customer's invoice |  |  | 80.00% |  |

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