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Note 3 - Inventories (Tables)
6 Months Ended
Jun. 30, 2013
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
   

June 30,

2013

   

December 31,

2012

 

Finished goods

  $ 241     $ 465  

Work-in-progress

    487       468  

Raw material

    1,958       1,352  
    $ 2,686     $ 2,285