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Inventories (Details) - USD ($) | Jul. 31, 2021 | Jul. 31, 2020
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Inventory Disclosure [Abstract] |  |
Raw materials and components | $ 62,249,000 | $ 59,175,000
Work-in-process and finished goods | 38,338,000 | 42,203,000
Total inventories | 100,587,000 | 101,378,000
Less reserve for excess and obsolete inventories | 20,229,000 | 19,076,000
Inventories, net | 80,358,000 | 82,302,000
Inventory directly related to long-term contracts | 7,028,000 | 7,215,000
Inventory related to contracts from third party commercial customers who outsource their manufacturing to us | $ 1,509,000 | $ 1,387,000

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- Definition Net carrying amount as of the balance sheet date of inventories related to contracts from third-party commercial customers who outsource their manufacturing to the Company. + References No definition available. + Details
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