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Note 8 - Inventory (Tables)
6 Months Ended
Jul. 03, 2016
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
July 3,
2016
 
 
December 31,
2015
 
 
 
(Unaudited)
 
 
 
 
 
Raw materials
  $ 12,715     $ 12,388  
Work in process
    10,790       10,366  
Finished goods
    2,816       3,167  
Reserve for excess and obsolete inventory
    (5,699 )     (5,729 )
    $ 20,622     $ 20,192