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Income Taxes (Narrative) (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022
Income Tax Disclosure [Line Items] |  |
Uncertainty tax position related to research and development costs | $ 25,000 |
Operating loss carryforwards | 31,800,000 |
Interest and penalties | 0 | $ 0
Unrecognized tax benefits | 0 | 0
Income Tax Expense (Benefit) | 317,377 | 7,517
Wisconsin Department of Revenue [Member] |  |
Income Tax Disclosure [Line Items] |  |
Operating loss carryforwards | 4,565,000 |
Federal [Member] |  |
Income Tax Disclosure [Line Items] |  |
Operating loss carryforwards, not subject to expiration | 31,793,000 |
Operating loss carryforwards | 7,006,000 |
Income Tax Expense (Benefit) | 230,139 | 0
State and Local Jurisdiction [Member] |  |
Income Tax Disclosure [Line Items] |  |
Income Tax Expense (Benefit) | 87,238 | $ 7,517
State and Local Jurisdiction [Member] | Wisconsin Department of Revenue [Member] |  |
Income Tax Disclosure [Line Items] |  |
Operating loss carryforwards, subject to expiration | 10,944,000 |
State and Local Jurisdiction [Member] | Other States [Member] |  |
Income Tax Disclosure [Line Items] |  |
Operating loss carryforwards, subject to expiration | $ 15,090,000 |

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