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Note 11 - Inventory (Tables)
 3 Months Ended
Apr. 02, 2017
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
April 2,
 
 
December 31,
 
 
 
2017
 
 
2016
 
 
 
(Unaudited)
 
 
 
 
 
Raw materials
   $
11,458
     $
8,187
  
Work in process
    
6,944
      
6,211
  
Finished goods
    
2,983
      
2,020
  
Reserve for excess and obsolete inventory
    
(1,841
 )    
(1,860
 )
Total   $
19,544
     $
14,558