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Note 2 - Inventories (Tables)
 9 Months Ended
Sep. 30, 2015
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
September 30,
 
 
December 31,
 
 
 
201
5
 
 
201
4
 
                 
Finished goods
   $ 11,133     $ 16,981  
Work in process
     28,398       16,698  
Raw materials and purchased components
     42,002       41,072  
Reserve for slow-moving inventory
     (3,000
)
    (3,588
)
                 
    $ 78,533     $ 71,163