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Note 4 - Divestitures (Details Textual) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Oct. 10, 2022
Jun. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Restructuring Charges       $ 3.1
St. Etienne, France Factory [Member]        
Restructuring Charges   $ 0.2 $ 0.5  
Proceeds from Sale of Property, Plant, and Equipment $ 0.9      
Sale of Property, Plant, and Equipment, Closing Costs $ 0.1      
Gain (Loss) on Disposition of Property Plant Equipment       $ 0.1