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Inventories (Tables)
 9 Months Ended
Oct. 03, 2015
Inventories [Abstract]  
Components of inventories
The components of inventories follow:

 
 
October 3,2015
  
January 3,2015
 
 
 
  
 
Raw material and component parts
 
$
9,775,420
  
$
9,219,341
 
Work in process
  
7,513,942
   
7,074,950
 
Finished goods
  
19,186,086
   
18,107,906
 
 
 
$
36,475,448
  
$
34,402,197