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Note 3 - Inventories (Tables)
6 Months Ended
Jun. 30, 2012
Schedule of Inventory, Current [Table Text Block]
   
June 30,
2012
   
December 31,
2011
 
             
Raw materials
  $ 1,457     $ 1,517  
Finished goods
    905       912  
Inventories, net
  $ 2,362     $ 2,429