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Inventories
6 Months Ended
Jan. 31, 2021
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following at:
 January 31, 2021July 31, 2020
Raw materials and components$62,194,000 59,175,000 
Work-in-process and finished goods39,569,000 42,203,000 
Total inventories101,763,000 101,378,000 
Less reserve for excess and obsolete inventories20,133,000 19,076,000 
Inventories, net$81,630,000 82,302,000 

As of January 31, 2021 and July 31, 2020, the amount of inventory directly related to long-term contracts (including contracts-in-progress) was $5,535,000 and $7,215,000, respectively, and the amount of inventory related to contracts from third-party commercial customers who outsource their manufacturing to us was $1,597,000 and $1,387,000, respectively.