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Note 2 - Summary of Significant Accounting Policies (Tables)
6 Months Ended
Jun. 30, 2014
Accounting Policies [Abstract]  
Schedule of Inventory, Current [Table Text Block]
      December 31, 2013       June 30, 2014  

Raw materials

  $ 26,080     $ 18,429  

Finished goods

    3,750       6,301  

Total inventory

  $ 29,830     $ 24,730