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Note 5 - Property and Equipment (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 02, 2022
Jul. 03, 2021
Jul. 02, 2022
Jul. 03, 2021
Property, Plant and Equipment, Useful Life (Year)     5 years  
Write Off of Fully Depreciated Property and Equipment     $ 603 $ 451
Depreciation, Nonproduction $ 225 $ 259 $ 463 $ 525