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Note 2 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2013
Accounting Policies [Abstract]  
Schedule of Inventory, Current [Table Text Block]
      December 31, 2012         December 31, 2013    

Raw materials

  $ 43,395       $ 26,080    

Finished goods (Note 4)

    10,590         3,750    
    $ 53,985       $ 29,830