v3.25.2
Note 10 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest $ (13,848) $ (11,664)  
Effective Income Tax Rate Reconciliation, Percent 0.01% 0.01%  
Unrecognized Tax Benefits $ 762 $ 604 $ 486
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00% 21.00%  
Current State and Local Tax Expense (Benefit) $ 2 $ 2  
Operating Loss Carryforwards, Valuation Allowance 26,500    
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount 3,000    
Operating Loss Carryforwards 98,000    
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 7,500    
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 Jurisdiction [Member]      
Tax Credit Carryforward, Amount 1,700    
State and Local Jurisdiction [Member] | CALIFORNIA      
Tax Credit Carryforward, Amount 47    
Indefinite Lives [Member]      
Federal Operating Loss Carryforwards Available 60,200    
Unrecognized Tax Benefits Resulting in Net Operating Loss Carryforward One $ 12,600