Note 8 - Income Taxes (Details Textual) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Unrecognized Tax Benefits, Ending Balance | $ 0 | |
| Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit | 0 | |
| Domestic Tax Jurisdiction [Member] | ||
| Operating Loss Carryforwards | 6,700,000 | $ 5,000,000 |
| Charitable Contribustions Carryforward | 1,300,000 | |
| Operating Loss Carryforwards, Valuation Allowance | $ 2,500,000 | |
| Open Tax Year | 2021 2022 2023 | |
| State and Local Jurisdiction [Member] | ||
| Operating Loss Carryforwards | $ 5,400,000 | 5,600,000 |
| Operating Loss Carryforwards, Valuation Allowance | $ 515,000 | |
| State and Local Jurisdiction [Member] | Illinois Department of Revenue [Member] | ||
| Open Tax Year | 2020 2021 2022 2023 | |
| State and Local Jurisdiction [Member] | Wisconsin Department of Revenue [Member] | ||
| Open Tax Year | 2020 2021 2022 2023 |
| X | ||||||||||
- Definition Amount of charitable contributions carryforward. No definition available.
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- Definition Tax year that remains open to examination under enacted tax laws, in YYYY format. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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