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Income Taxes (Narrative) (Details) - USD ($) | 12 Months Ended | 24 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024
Income Tax Disclosure [Line Items] |  |  |
Uncertainty tax position related to research and development costs | $ 28,000 | $ 25,000 | $ 28,000
Operating loss carryforwards | 32,778,000 |  | 32,778,000
Interest and penalties |  |  | 0
Unrecognized tax benefits | 0 |  | 0
Income Tax Expense (Benefit) | (73,604) | 317,377 |
Federal tax benefit | (81,278) | 230,139 |
Wisconsin Department of Revenue [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Operating loss carryforwards | 4,381,000 |  | 4,381,000
Federal [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Operating loss carryforwards, not subject to expiration | 32,778,000 |  | 32,778,000
Operating loss carryforwards | 1,270,000 | 6,944,000 | 1,270,000
Income Tax Expense (Benefit) | 230,139 |  |
Research and development tax credits including carryovers |  | $ 132,466 |
State and Local Jurisdiction [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Income Tax Expense (Benefit) | 87,238 |  |
State and Local Jurisdiction [Member] | Wisconsin Department of Revenue [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Operating loss carryforwards, subject to expiration | 11,242,000 |  | 11,242,000
State and Local Jurisdiction [Member] | Other States [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Operating loss carryforwards, subject to expiration | 15,910,000 |  | $ 15,910,000
Minimum [Member] | State and Local Jurisdiction [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Income Tax Expense (Benefit) | $ 7,674 |  |

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- Definition Amount of current federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current national tax expense (benefit) for non-US (United States of America) jurisdiction. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(1)(Note 1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -SubTopic 10 -Topic 740 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.7) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 + Details
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