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Note 8 - Accumulated Other Comprehensive Income (Loss) (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
   

Three Months Ended
June 30,

   

Six Months Ended
June 30,

 
   

2022

   

2021

   

2022

   

2021

 
Pension and other postretirement benefits:                                

Recognized actuarial loss (a)

  $ 573     $ 689     $ 1,119     $ 1,349  

Settlement loss (a)

    1,597       1,728       1,597       1,728  

Total before income tax

  $ 2,170     $ 2,417     $ 2,716     $ 3,077  

Income tax

    (507 )     (560

)

    (630 )     (714

)

Net of income tax

  $ 1,663     $ 1,857     $ 2,086     $ 2,363  
Comprehensive Income (Loss) [Table Text Block]
   

Currency
Translation
Adjustments

   

Pension and
Other
Postretirement
Benefits

   

Accumulated
Other
Comprehensive
Income (Loss)

 

Balance at December 31, 2021

  $ (7,851 )   $ (22,479 )   $ (30,330 )

Reclassification adjustments

    -       2,716       2,716  

Current period charge

    (2,864 )     -       (2,864 )

Income tax benefit (charge)

    -       (630 )     (630 )

Balance at June 30, 2022

  $ (10,715 )   $ (20,393 )   $ (31,108 )
   

Currency
Translation
Adjustments

   

Pension and
Other
Postretirement
Benefits

   

Accumulated
Other
Comprehensive
Income (Loss)

 

Balance at December 31, 2020

  $ (5,044 )   $ (25,333 )   $ (30,377 )

Reclassification adjustments

    -       3,077       3,077  

Current period charge

    (422 )     -       (422 )

Income tax benefit (charge)

    -       (714 )     (714 )

Balance at June 30, 2021

  $ (5,466 )   $ (22,970 )   $ (28,436 )