Inventories (Tables)

9 Months Ended

Apr. 30, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following at:

	April 30, 2017		July 31, 2016
Raw materials and components	$	54,551,000	54,723,000
Work-in-process and finished goods	28,672,000		32,829,000
Total inventories	83,223,000		87,552,000
Less reserve for excess and obsolete inventories	15,886,000		16,198,000
Inventories, net	$	67,337,000	71,354,000