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Note 4 - Exit and Disposal Activities (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Restructuring and Related Costs [Table Text Block]
   
 
 
 
 
Costs Incurred
   
 
 
 
   
 
 
 
 
Year
   
Total
   
Remaining
 
   
Total
   
Ended
   
Recognized
   
Costs to be
 
   
Program
   
Dec. 31, 2019
   
to date
   
Recognized
 
Severance and benefit related costs
  $
1,350
    $
0
    $
1,350
    $
0
 
Asset impairments
   
188
     
0
     
188
     
0
 
Equipment relocation costs
   
1,826
     
38
     
1,826
     
0
 
Other
   
1,609
     
471
     
1,546
     
63
 
    $
4,973
    $
509
    $
4,910
    $
63
 
Disposal Groups, Including Discontinued Operations [Table Text Block]
   
December 31,
 
   
2019
   
2018
 
Property, plant and equipment
  $
13,346
    $
11,207
 
Accumulated depreciation
  $
(11,113
)   $
(9,733
)
Property, plant and equipment, net
  $
2,233
    $
1,474