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Note 5 - Property, Plant and Equipment (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   

September 30,

2021

   

December 31,

2020

 

Land

  $ 5,864     $ 5,805  

Buildings

    111,488       111,876  

Machinery and equipment

    187,513       184,362  

 

    304,865       302,043  

Less accumulated depreciation

    (200,100 )     (193,377

)

Property, plant and equipment, net

  $ 104,765     $ 108,666