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Note 3 - Inventories
3 Months Ended
Mar. 31, 2013
Inventory Disclosure [Text Block]
3.  
INVENTORIES

Inventories are stated at the lower of cost or market with cost determined under the first-in, first-out (FIFO) method. The composition of inventories was:

   
March 31, 2013
   
December 31, 2012
 
Raw materials
  $ 13,447     $ 15,023  
Work in process
    4,281       4,863  
Finished goods
    10,553       10,484  
    $ 28,281     $ 30,370