v3.26.3
Note 5 - Renewable Energy Tax Credit Investment (Details Textual) - Renewable Energy Investment [Member] - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Investment Program, Proportional Amortization Method, Elected, Commitment $ 44 $ 50
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, after Amortization Expense $ 6