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Note 7 - Concentration of Revenue
9 Months Ended
Sep. 30, 2012
Concentration Risk Disclosure [Text Block]
7.     Concentration of Revenue  The following table indicates the percentage of consolidated revenue represented by each customer for any period in which such customer represented more than 10% of consolidated revenue.

   
Three Months Ended Sept. 30,
   
Nine Months Ended Sept. 30,
 
(unaudited)
 
2012
   
2011
   
2012
   
2011
 
ChemFree Customer A
    29.0 %     22.0 %     29.0 %     26.8 %
ChemFree Customer B
    10.0 %     --       10.0 %     --  
ChemFree Customer C
    11.5 %     --       12.9 %     10.2 %
CoreCard Customer D
    --       28.4 %     --       11.3 %