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Note 8 - Inventory (Tables)
3 Months Ended
Apr. 03, 2016
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
April 3,
 
 
December 31,
 
 
 
2016
 
 
2015
 
 
   
(Unaudited)
 
       
Raw materials
  $ 12,638     $ 12,388  
Work in process
    10,718       10,366  
Finished goods
    3,060       3,167  
Reserve for excess and obsolete inventory
    (5,621 )     (5,729 )
    $ 20,795     $ 20,192