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Accrued Expenses and Other Current Liabilities - Components of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Jan. 01, 2022
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Components of accrued expenses and other current liabilities |  |
Legal and professional fees | $ 384 | $ 379
Sales and marketing expenses | 96 | 238
Temporary help and consulting | 196 | 215
Royalties payable | 106 | 97
Tax payable | 65 | 73
Other accrued expenses | 701 | 573
Total accrued expenses | 1,548 | 1,575
Customer deposits | 968 | 1,098
Total other current liabilities | $ 968 | $ 1,098

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