Inventories (Tables)

3 Months Ended

Apr. 30, 2014

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

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