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Note 18 - Post-retirement Benefits (Tables)
3 Months Ended
Mar. 31, 2025
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
  

Three Months Ended March 31,

 
  

2025

  

2024

 

Amortization of prior service credit

 $61  $61 

Interest cost

  (1,854)  (1,604)

Expected return on plan assets

  2,133   1,926 

Total

 $340  $383