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Note 5 - Toluca Sale-leaseback (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Disposal Groups, Including Discontinued Operations [Table Text Block]
 
 
December 31,
 
 
 
2016
 
Machinery, equipment, furniture and fixtures
   $
6,673
  
Accumulated depreciation
    
(5,841
 )
Property, plant and equipment, net
   $
832
  
Toluca [Member]  
Notes Tables  
Disposal Groups, Including Discontinued Operations [Table Text Block]
 
 
December 31,
 
 
 
2015
 
Land and land improvements
   $
1,568
  
Buildings and building improvements
    
3,658
  
Accumulated depreciation
    
(1,996
 )
Property, plant and equipment, net
   $
3,230