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Note 5 - Property, Plant and Equipment (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

September 30, 2020

  

December 31, 2019

 

Land

 $5,692  $4,998 

Buildings

  111,204   110,162 

Machinery and equipment

  184,347   182,922 

 

  301,243   298,082 

Less accumulated depreciation

  (191,842)  (186,303

)

Property, plant and equipment, net

 $109,401  $111,779