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Inventories
3 Months Ended
Apr. 30, 2014
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
4.
Inventories
Inventories consist of the following:
 
 
 
April 30, 2014
 
January 31, 2014
 
 
 
 
 
 
 
 
 
Raw materials
 
$
16,849,408
 
$
16,348,861
 
Work-in-process
 
 
1,417,790
 
 
1,292,740
 
Finished goods
 
 
22,103,300
 
 
22,202,708
 
 
 
$
40,370,498
 
$
39,844,309
 
 
Inventories include freight-in, materials, labor and overhead costs and are stated at the lower of cost (on a first-in, first-out basis) or market.