Inventories (Tables)

9 Months Ended

Apr. 30, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following at:

	April 30, 2018		July 31, 2017
Raw materials and components	$	55,128,000	50,569,000
Work-in-process and finished goods	37,149,000		26,053,000
Total inventories	92,277,000		76,622,000
Less reserve for excess and obsolete inventories	15,723,000		16,019,000
Inventories, net	$	76,554,000	60,603,000