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Prepaids and Other Current Assets - Additional Information (Details) - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Nov. 08, 2016 | Dec. 28, 2019 | Dec. 29, 2018 | [1]
Short Term Debt [Line Items] |  |  |
Short term debt |  | $ 280 | $ 675
Notes Payable | Energy Efficiency Investments LLC Securities Purchase Agreement |  |  |
Short Term Debt [Line Items] |  |  |
Debt issuance date | Nov. 08, 2016 |  |
Debt face amount | $ 7,732 |  |
Debt interest rate | 3.00% |  |
Debt interest accrual rate | 8.00% |  |
Short term debt |  | 0 |
Unamortized debt issuance costs | $ 740 |  |
Debt issuance costs amortization period | 60 months |  |
Amortization of debt issuance costs |  | $ 419 |
[1] | As of December 31, 2018, the Company has $419 of unamortized debt issuance costs associated with a revolving credit facility. Because there was no balance outstanding on the credit facility as of December 31, 2018, the Company should have reclassified the debt issuance costs from a contra liability to a deferred asset.

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