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Note 6 - Property 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

 $22,773  $22,480 

Buildings

  47,663   44,251 

Machinery and equipment

  127,679   115,237 

Equipment under finance lease

  2,589   2,081 
   200,704   184,049 

Less accumulated depreciation and amortization

  (96,684)  (86,244)
   104,020   97,805 

Construction in progress

  6,164   1,826 

Property and equipment, net

 $110,184  $99,631