Accrued Expenses and Other Current Liabilities - Components of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jan. 01, 2022
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