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Note 12 - Retirement, Savings and Deferred Compensation Plans (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
  

Three Months Ended

 
  

March 31,

 
  

2023

  

2022

 

Service cost

 $92  $126 

Interest cost

  221   159 

Net amortization

  18   78 

Net periodic benefit cost

 $331  $363 
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
  

March 31,

  

December 31,

 
  

2023

  

2022

 

Prior service cost

 $303  $334 

Net loss

  (2,203)  (2,216)
  $(1,900) $(1,882)