Customer and Geographic Information (Tables)

6 Months Ended

Jan. 31, 2015

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 January 31,				Six months ended January 31,
	2015		2014		2015		2014
United States
U.S. government	27.5	%	31.2	%	26.2	%	28.4	%
Commercial	11.7	%	11.3	%	12.8	%	14.3	%
Total United States	39.2	%	42.5	%	39.0	%	42.7	%
International
North African country	15.0	%	13.7	%	14.8	%	13.1	%
Other international	45.8	%	43.8	%	46.2	%	44.2	%
Total International	60.8	%	57.5	%	61.0	%	57.3	%