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Note 5 - Inventories (Tables)
9 Months Ended
Sep. 30, 2014
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
   

September 30, 2014

   

December 31, 2013

 
                 

Raw materials

  $ 4,100,867     $ 4,058,350  

Work-in-process

    993,248       300,460  

Finished goods

    119,435       138,539  

Totals

  $ 5,213,550     $ 4,497,349