Customer and Geographic Information (Tables)
 6 Months Ended
Jan. 31, 2016
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,
 
 
2016
 
2015
 
2016
 
2015
United States
 
 
 
 
 
 
 
 
U.S. government
 
42.0
%
 
27.5
%
 
41.7
%
 
26.2
%
Commercial
 
20.0
%
 
11.7
%
 
17.4
%
 
12.8
%
Total United States
 
62.0
%
 
39.2
%
 
59.1
%
 
39.0
%
 
 
 
 
 
 
 
 
 
International
 
 
 
 
 
 
 
 
North African country
 
2.4
%
 
15.0
%
 
4.2
%
 
14.8
%
Other international
 
35.6
%
 
45.8
%
 
36.7
%
 
46.2
%
Total International
 
38.0
%
 
60.8
%
 
40.9
%
 
61.0
%