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Customer and Geographic Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Apr. 30, 2016 | Apr. 30, 2015 | Apr. 30, 2016 | Apr. 30, 2015
Major customer |  |  |  |
Revenues from External Customers |  |  |  |
Minimum percentage of consolidated net sales sold to one customer or individual country requiring additional and separate disclosure | 10.00% | 10.00% | 10.00% | 10.00%
Major customer | Sales Revenue, Net |  |  |  |
Revenues from External Customers |  |  |  |
Percentage of revenue generated from external customer type | 0.00% |  | 0.00% |
U.S. government |  |  |  |
Revenues from External Customers |  |  |  |
Percentage of revenue generated from external customer type | 41.90% | 37.50% | 41.80% | 29.70%
Commercial (United States) |  |  |  |
Revenues from External Customers |  |  |  |
Percentage of revenue generated from external customer type | 35.20% | 11.90% | 26.00% | 12.50%
Total United States |  |  |  |
Revenues from External Customers |  |  |  |
Percentage of revenue generated from external customer type | 77.10% | 49.40% | 67.80% | 42.20%
North African country |  |  |  |
Revenues from External Customers |  |  |  |
Percentage of revenue generated from external customer type | 0.90% | 17.30% | 2.60% | 15.60%
Other international |  |  |  |
Revenues from External Customers |  |  |  |
Percentage of revenue generated from external customer type | 22.00% | 33.30% | 29.60% | 42.20%
Total International |  |  |  |
Revenues from External Customers |  |  |  |
Revenue generated from external customers | $ 28,417,000 | $ 36,243,000 | $ 83,401,000 | $ 132,767,000
Percentage of revenue generated from external customer type | 22.90% | 50.60% | 32.20% | 57.80%
U.S. Prime Contractor | Major customer | Sales Revenue, Net |  |  |  |
Revenues from External Customers |  |  |  |
Percentage of revenue generated from external customer type |  | 17.00% |  | 15.20%

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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