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Note 8 - Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
   

Asset/(Liability)

Balance

         
   

December 31,

         
   

2025

   

2024

   

Input Level

 

Trading investments

  $ 36.3     $ 33.9       1