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Note 10 - Income Taxes (Details Textual) - USD ($)
3 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Jun. 30, 2025
Effective Income Tax Rate Reconciliation, Percent 18.30% 27.80%  
Deferred Tax Assets, Valuation Allowance $ 0    
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 362,000   $ 421,000
Liability for Uncertainty in Income Taxes, Noncurrent 821,000   $ 891,000
Unrecognized Tax Benefits $ 821,000