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Note 2 - Inventory (Tables)
9 Months Ended
Sep. 30, 2013
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
   

2013

   

2012

 

Furnace parts and supplies

  $ 1,011,408     $ 986,278  

Raw materials

    710,226       705,025  

Work in process

    2,022,679       1,502,144  

Finished goods

    1,290,462       990,935  

Reserve for obsolescence

    (216,079

)

    (72,567

)

Net Inventory

  $ 4,818,696     $ 4,111,815