Inventories, Net (Tables)

6 Months Ended

Oct. 31, 2015

Inventories, Net [Abstract]

Components Of Inventory

	October 31,		April 30,
	2015		2015
Finished products	$	24,631,107	$	24,316,404
Work-in-process		3,269,704		2,966,846
Raw materials		40,672,952		42,662,845
		68,573,763		69,946,095
Less obsolescence reserve		1,216,990		1,276,386
	$	67,356,773	$	68,669,709