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Inventories (Tables)
 12 Months Ended
Dec. 31, 2013
Inventories [Abstract]  
Summary of composition of inventories
   
2013
    
2012
  
Raw materials
  
$
3,262,769
    
$
4,055,812
  
Finished goods
    
4,407,421
      
5,472,771
  
Inventories, gross
    
7,670,190
      
9,528,583
  
                 
Inventory reserves
    
(302,296
)
    
(271,994
)
                 
Inventories, net
  
$
7,367,894
    
$
9,256,589