Inventories (Details) - Schedule of Inventories - USD ($) $ in Thousands	Jan. 31, 2022	Jul. 31, 2021
Schedule of Inventories [Abstract]
Raw materials	$ 1,349	$ 1,062
Work in process	2,802	2,534
Finished products	9,700	9,056
Total inventories	$ 13,851	$ 12,652

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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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