Inventories (Details) - Schedule of inventory current - USD ($) $ in Thousands	Apr. 30, 2020	Jul. 31, 2019
Schedule of inventory current [Abstract]
Raw materials	$ 907	$ 876
Work in process	2,652	2,566
Finished products	4,459	4,400
Total inventory	$ 8,018	$ 7,842

No definition available.

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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