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Inventories
9 Months Ended
Sep. 30, 2011
Inventories
7.
Inventories
 
Inventories consist of the following:
 
   
September 30,
   
December 31,
 
   
2011
   
2010
 
Raw materials
  $ 3,472,589     $ 2,882,944  
Work-in-process
    1,820,536       1,787,473  
Finished goods
    2,581,182       4,279,328  
Total
  $ 7,874,307     $ 8,949,745  
 
Inventories are stated at the lower of cost or market, with cost being determined using the first-in, first-out method. Work-in-process and finished goods inventories include materials, labor, and manufacturing overhead.