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Note 2 - Business Acquisition - Purchase Price Allocation (Details) (Parentheticals) - ATD [Member] - $ / shares
12 Months Ended
Jan. 02, 2025
Dec. 31, 2024
Jan. 03, 2024
Jan. 02, 2024
Dec. 31, 2024
Holdback shares (in shares) 664,329 664,329 2,832,135 3,496,464 2,832,135
Business acquisition, share closing price (in dollars per share)   $ 3.14     $ 3.14
ATD Holdback Shares [Member]          
Holdback shares (in shares)         664,329