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Note 13 - Retirement, Savings and Deferred Compensation Plans (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
         
  

Three Months Ended

 
  

March 31,

 
  

2024

  

2023

 

Service cost

 $99  $92 

Interest cost

  226   221 

Net amortization

  20   18 

Net periodic benefit cost

 $345  $331 
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
  

March 31,

  

December 31,

 
  

2024

  

2023

 

Prior service cost

 $192  $212 

Net loss

  (1,336)  (1,336)
  $(1,144) $(1,124)