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Note 8 - Property, Plant and Equipment (Details Textual) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Depreciation $ 5.0 $ 5.0 $ 9.8 $ 10.2