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Note 17 - Industry Segment Information (Details Textual)
$ in Millions
12 Months Ended
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2021
USD ($)
Number of Reportable Segments 5    
Capital Expenditures Incurred but Not yet Paid $ 0.3 $ 0.1 $ 2.4