Inventories (Tables)

3 Months Ended

Oct. 31, 2012

Inventory Disclosure [Abstract]

Inventories

	October 31, 2012		July 31, 2012
Raw materials and components	$	53,585,000	55,404,000
Work-in-process and finished goods	29,730,000		33,243,000
Total inventories	83,315,000		88,647,000
Less reserve for excess and obsolete inventories	14,667,000		16,286,000
Inventories, net	$	68,648,000	72,361,000