Note 13 - Information Concerning Product Lines, Geographic Information and Revenue Concentration - Schedule of Revenue by Shipment Destination (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 01, 2023	Jan. 02, 2022	Jan. 03, 2021
Revenue	$ 16,180	$ 12,685	$ 8,634
Asia Pacific [Member]
Revenue	3,558	3,352	2,100
North America [Member]
Revenue	10,912	6,885	5,033
Europe [Member]
Revenue	$ 1,710	$ 2,448	$ 1,501

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details