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Note 7 - Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

December 31,

 
  

2020

  

2019

 

Land and improvements

 $3,191  $3,191 

Buildings and improvements

  36,017   35,502 

Leasehold improvements

  3,160   3,022 

Machinery & equipment

  67,880   66,438 

Furniture, fixtures, computers & software

  6,135   6,414 

Construction in progress

  2,005   1,522 
  $118,388  $116,089