Customer and Geographic Information (Tables)

9 Months Ended

Apr. 30, 2017

Geographic Areas, Revenues from External Customers [Abstract]

Schedule of net sales, as a percentage, by geography and customer type

Sales by geography and customer type, as a percentage of consolidated net sales, are as follows:

	Three months ended April 30,				Nine months ended April 30,
	2017		2016		2017		2016
United States
U.S. government	32.0	%	41.9	%	33.1	%	41.8	%
Domestic	41.3	%	35.2	%	37.9	%	26.0	%
Total United States	73.3	%	77.1	%	71.0	%	67.8	%
International	26.7	%	22.9	%	29.0	%	32.2	%
Total	100.0	%	100.0	%	100.0	%	100.0	%