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Note 12 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Income Tax Expense (Benefit) $ 106 $ (14) $ 228 $ 18
Liability for Uncertainty in Income Taxes, Current 0   0  
Unrecognized Tax Benefits $ 0   $ 0  
Maximum [Member]        
Income Tax Expense (Benefit)   $ 100   $ 100