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Note 5 - Property, Plant and Equipment (Tables)
3 Months Ended
Mar. 31, 2021
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

March 31,

2021

  

December 31,

2020

 

Land

 $5,734  $5,805 

Buildings

  111,089   111,876 

Machinery and equipment

  184,327   184,362 
   301,150   302,043 

Less accumulated depreciation

  (195,362)  (193,377

)

Property, plant and equipment, net

 $105,788  $108,666