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Note 3 - Inventories
9 Months Ended
Sep. 30, 2012
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:

   
September 30, 2012
   
December 31, 2011
 
Raw materials
  $ 15,977     $ 20,097  
Work in process
    5,095       4,770  
Finished goods
    12,020       10,100  
    $ 33,092     $ 34,967