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Note 2 - Summary of Significant Accounting Policies (Details Textual) | 12 Months Ended
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Dec. 28, 2024 USD ($) | Dec. 30, 2023 USD ($)
Accounts Receivable, Allowance for Credit Loss | $ 10,000 | $ 10,000
Impairment, Long-Lived Asset, Held-for-Use, Total | 0 | 0
Contract with Customer, Rebates | 0 |
Other Inventory, Materials, Supplies and Merchandise under Consignment, Gross | 0 |
Income Tax Examination, Penalties and Interest Accrued | 0 | 0
Unrecognized Tax Benefits, Uncertain Tax Positions | $ 0 | $ 0
Number of Operating Segments | 1 |
Number of Reportable Segments | 1 |
Production Equipment [Member] | Minimum [Member] |  |
Property, Plant and Equipment, Useful Life | 5 years |
Production Equipment [Member] | Maximum [Member] |  |
Property, Plant and Equipment, Useful Life | 7 years |
Furniture and Office Equipment [Member] | Minimum [Member] |  |
Property, Plant and Equipment, Useful Life | 3 years |
Furniture and Office Equipment [Member] | Maximum [Member] |  |
Property, Plant and Equipment, Useful Life | 5 years |

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- Definition Amount of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-4 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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