Customer and Geographic Information (Tables)

3 Months Ended

Oct. 31, 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 October 31,
	2017		2016
United States
U.S. government	32.4	%	35.3	%
Domestic	44.3	%	36.8	%
Total United States	76.7	%	72.1	%
International	23.3	%	27.9	%
Total	100.0	%	100.0	%