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Note 10 - Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2017
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
December 31,
  
   
2017
    
2016
  
Land and land improvements
   $
219
     $
219
  
Buildings and building improvements
    
11,140
      
10,056
  
Machinery, equipment, furniture and fixtures
    
49,726
      
76,495
  
Construction in progress
    
998
      
646
  
     
62,083
      
87,416
  
Accumulated depreciation
    
(46,509
 )    
(69,473
 )
    $
15,574
     $
17,943
  
   
December 31,
 
   
2017
    
2016
  
Buildings and building improvements
   $
2,987
     $
2,853
  
Machinery, equipment, furniture and fixtures
    
1,277
      
0
  
     
4,264
      
2,853
  
Accumulated depreciation
    
(548
 )    
(238
 )
    $
3,716
     $
2,615