Inventories (Tables)

3 Months Ended

Jan. 31, 2014

Inventory Disclosure [Abstract]

Inventories

	January 31, 2014		April 30, 2013
Raw materials	$	1,492,510	$	1,425,386
Work in process		9,889		88,603
Finished goods		769,802		1,389,065
	$	2,272,201	$	2,903,054