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Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
Income Taxes Receivable, Current | $ 1 | $ 0 |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest | $ (9,642) | $ (8,330) |
Effective Income Tax Rate Reconciliation, Percent, Total | 0.00% | 0.00% |
Current State and Local Tax Expense (Benefit) | $ 0 |  |
Unrecognized Tax Benefits | $ 486 | $ 400 | $ 329
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | 21.00% |
Operating Loss Carryforwards, Valuation Allowance | $ 21,000 |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 1,700 |  |
Deferred Tax Asset, Debt Securities, Available-for-Sale, Unrealized Loss | 305 | $ 0 |
Operating Loss Carryforwards | 83,500 |  |
Federal Operating Loss Carryforwards Available | 37,800 |  |
Unrecognized Tax Benefits Resulting in Net Operating Loss Carryforward One | $ 7,900 |  |
Tax Cuts and Jobs Act of 2017, Limits on Utilization of Net Operating Loss to Taxable Income Percentage | 80.00% |  |
Tax Credit Carryforward, Amount | $ 500 |  |
Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 7,400 |  |
Unrecognized Tax Benefits Resulting in Net State Operating Loss Carryforwards | 400 |  |
Unrecognized Tax Effect on Texas Business Loss Carryforwards | 400 |  |
Deferred Tax Liabilities, Net, Total | 13 |  |
Interest Expense For Uncertain Tax Positions | 0 | $ 0 |
Domestic Tax Authority [Member] |  |  |
Tax Credit Carryforward, Amount | 1,100 |  |
Indefinite Lives [Member] |  |  |
Federal Operating Loss Carryforwards Available | 45,700 |  |
Unrecognized Tax Benefits Resulting in Net Operating Loss Carryforward One | $ 9,600 |  |

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