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
Oct. 31, 2018
Jul. 31, 2018
Schedule of inventory, current [Abstract]    
Raw materials $ 797 $ 754
Work in process 2,338 2,174
Finished products 4,453 4,350
$ 7,588 $ 7,278