XML 55 R43.htm IDEA: XBRL DOCUMENT v3.23.1
Note 18 - Post-retirement Benefits (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
   

Three Months Ended March 31,

 
   

2023

   

2022

 
                 

Amortization of prior service credit

  $ 61     $ 61  

Interest cost

    (1,533 )     (1,054 )

Expected return on plan assets

    986       1,428  

Total

  $ (486 )   $ 435