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Note 13 - Retirement, Savings and Deferred Compensation Plans (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
  

Three Months Ended

  

Nine Months Ended

 
  

September 30,

  

September 30,

 
  

2023

  

2022

  

2023

  

2022

 

Service cost

 $92  $126  $277  $377 

Interest cost

  221   159   664   477 

Net amortization

  18   78   53   234 

Net periodic benefit cost

 $331  $363  $994  $1,088 
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
  

September 30,

  

December 31,

 
  

2023

  

2022

 

Prior service cost

 $242  $334 

Net loss

  (2,177)  (2,216)
  $(1,935) $(1,882)