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Note 5 - Fair Value of Marketable Securities (Tables) | 12 Months Ended
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Dec. 28, 2024
Notes Tables |
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] |
|  | December 28, 2024 |  |  | December 30, 2023 |
Cost basis |  | $ | 1,015,501 |  |  |  | – |
Unrealized gain |  | $ | 15,500 |  |  |  | – |
Total fair value |  | $ | 1,031,001 |  |  |  | – |

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