v3.26.1
Note 6 - Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2026
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
   

Asset

Balance

         
   

March 31, 2026

   

December 31, 2025

   

Input Level

 

Trading investments

  $ 37.4     $ 36.3       1