Inventories (Tables)

3 Months Ended

Oct. 31, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following at:

	October 31, 2017		July 31, 2017
Raw materials and components	$	51,237,000	50,569,000
Work-in-process and finished goods	34,188,000		26,053,000
Total inventories	85,425,000		76,622,000
Less reserve for excess and obsolete inventories	15,234,000		16,019,000
Inventories, net	$	70,191,000	60,603,000