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Note 3 - Inventories
12 Months Ended
Dec. 31, 2012
Inventory Disclosure [Text Block]
3.   Inventories

Inventories are stated at the lower of standard cost (which approximates actual cost determined using the first-in, first-out cost method) or market and consists of the following (in thousands):

   
December 31,
 
   
2012
   
2011
 
Raw materials
  $ 1,649     $ 1,517  
Finished goods
    932       912  
Inventories, net
  $ 2,581     $ 2,429