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Accrued Expenses and Other Current Liabilities - Components of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Dec. 28, 2024 | Dec. 30, 2023
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Components of accrued expenses and other current liabilities |  |
Legal and professional fees | $ 156 | $ 227
Sales and marketing expenses | 17 | 117
Temporary help and consulting | 49 | 140
Royalties payable | 57 | 149
Tax payable | 150 | 100
Other accrued expenses | 48 | 1,263
Total accrued expenses | 477 | 1,996
Customer deposits | 1,312 | 925
Accrued warranty | 500 | 308
Total other current liabilities | $ 1,812 | $ 1,233

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