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Customer and Geographic Information (Tables)
6 Months Ended
Jan. 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 January 31,
 
Six months ended January 31,
 
 
2017
 
2016
 
2017
 
2016
United States
 
 
 
 
 
 
 
 
U.S. government
 
32.1
%
 
42.0
%
 
33.7
%
 
41.7
%
Domestic
 
35.8
%
 
20.0
%
 
36.3
%
 
17.4
%
Total United States
 
67.9
%
 
62.0
%
 
70.0
%
 
59.1
%
 
 
 
 
 
 
 
 
 
International
 
32.1
%
 
38.0
%
 
30.0
%
 
40.9
%
Total
 
100.0
%
 
100.0
%
 
100.0
%
 
100.0
%