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Inventory (Tables)
12 Months Ended
Dec. 31, 2014
Inventory Disclosure [Abstract]  
Components of Inventory
Components of inventory are as follows:
 
December 31, 2013
 
December 31, 2014
Finished goods
$
719,574

 
$
648,182

Work-in-process
361,754

 
262,025

Raw materials
2,339,595

 
2,692,765

 
3,420,923

 
3,602,972

Less: Inventory reserves
74,746

 
238,739

Total inventory, net
$
3,346,177

 
$
3,364,233