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Note 15 - Income Taxes - Summary of State and Local Income Taxes, Net of Federal Benefit (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
State and Local Income Taxes | [1] | $ (79,693) | $ (36,681)
State and local income taxes, net of federal benefit, percent |  | 100.00% | 100.00%
State and local income taxes, net of federal benefit, amount | [1] | $ (79,693) | $ (36,681)
California Franchise Tax Board [Member] |  |  |
State and Local Income Taxes |  | $ (16,720) | $ (17,422)
State and local income taxes, net of federal benefit, percent |  | 20.98% | 47.50%
State and local income taxes, net of federal benefit, amount |  | $ (16,720) | $ (17,422)
Maine Tax [Member] |  |  |
State and Local Income Taxes |  | $ 0 | $ (6,456)
State and local income taxes, net of federal benefit, percent |  | 0.00% | 17.60%
State and local income taxes, net of federal benefit, amount |  | $ 0 | $ (6,456)
Michigan Tax [Member] |  |  |
State and Local Income Taxes |  | $ (7,070) | $ 0
State and local income taxes, net of federal benefit, percent |  | 8.87% | 0.00%
State and local income taxes, net of federal benefit, amount |  | $ (7,070) | $ 0
Minnesota Tax [Member] |  |  |
State and Local Income Taxes |  | $ (15,018) | $ (7,158)
State and local income taxes, net of federal benefit, percent |  | 18.85% | 19.51%
State and local income taxes, net of federal benefit, amount |  | $ (15,018) | $ (7,158)
New York State Division of Taxation and Finance [Member] |  |  |
State and Local Income Taxes |  | $ (16,164) | $ (5,364)
State and local income taxes, net of federal benefit, percent |  | 20.28% | 14.62%
State and local income taxes, net of federal benefit, amount |  | $ (16,164) | $ (5,364)
Pennsylvania Tax [Member] |  |  |
State and Local Income Taxes |  | $ (26,380) | $ (6,187)
State and local income taxes, net of federal benefit, percent |  | 33.10% | 16.87%
State and local income taxes, net of federal benefit, amount |  | $ (26,380) | $ (6,187)
Other State and Local Tax [Member] |  |  |
State and Local Income Taxes |  | $ 1,659 | $ 5,906
State and local income taxes, net of federal benefit, percent |  | (2.08%) | (16.10%)
State and local income taxes, net of federal benefit, amount |  | $ 1,659 | $ 5,906
[1] | State taxes in California, New York, Pennsylvania, and Minnesota made up the majority of the tax effect in this category.

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 231 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-231 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12A -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12A Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 + Details
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