RELATED PARTY TRANSACTIONS (Details) - Director - USD ($)	12 Months Ended
Jul. 31, 2019	Jul. 31, 2018
Related Party Transaction
Net sales to related party customer	$ 462,000	$ 388,000
Accounts receivable due from related party customer	10,000	14,000
Purchases from related party vendor	271,000	229,000
Accounts payable due to related party vendor	$ 0	$ 0

Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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