Inventories (Tables)

9 Months Ended

Apr. 30, 2011

Inventories

Inventories

	April 30, 2011	July 31, 2010
Raw materials and components	$      59,903,000	55,380,000
Work-in-process and finished goods	35,226,000	31,973,000
Total inventories	95,129,000	87,353,000
Less reserve for excess and obsolete inventories	13,701,000	13,791,000
Inventories, net	$      81,428,000	73,562,000