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Note 14 - Segment and Geographic Information (Tables)
12 Months Ended
Dec. 31, 2012
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
   
2012
   
2011
 
Revenues from external customers:
           
   North America
  $ 21,218     $ 24,273  
   Europe, Middle East and Africa (EMEA)
    4,254       4,256  
   Latin America
    2,538       2,006  
   Asia
    2,212       1,052  
    $ 30,222     $ 31,587