Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details) - Schedule of inventory, current

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Inventories (Details) - Schedule of inventory, current - USD ($)
$ in Thousands
Jan. 31, 2020
Jul. 31, 2019
Schedule of inventory, current [Abstract]    
Raw materials $ 873 $ 876
Work in process 2,539 2,566
Finished products 4,090 4,400
$ 7,502 $ 7,842