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Note 8 - Concentrations of Credit Risk | 6 Months Ended
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Apr. 30, 2022
Notes to Financial Statements |
Concentration Risk Disclosure [Text Block] | Note 8 – Concentrations of credit risk Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. We maintain our cash and cash equivalents with high-credit quality financial institutions. At April 30, 2022, we had cash and cash equivalent balances in excess of federally insured limits in the amount of approximately $2.9 million. Sales from each customer that were 10% or greater of net sales were as follows:
|  | Three Months Ended April 30, |  |  | Six Months Ended April 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Wireless provider |  |  | 24 | % |  |  | * |  |  |  | 28 | % |  |  | * |
Distributor A |  |  | * |  |  |  | 12 | % |  |  | * |  |  |  | 14 | %
Distributor B |  |  | * |  |  |  | 11 | % |  |  | * |  |  |  | 11 | %
For the six months ended April 30, 2022, one wireless carrier customer accounted for 28% of net sales and 21% of total net accounts receivable balance. Two customers, both distributors, accounted for approximately 14% and 11% of net sales and had accounts receivable balances that accounted for 13% and 14%, respectively, of the total net accounts receivable balance for the six months ended April 30, 2021. Although these customers have been on-going major customers of the Company, the written agreements with these customers do not have any minimum purchase obligations and they could stop buying our products at any time and for any reason. A reduction, delay or cancellation of orders from these customers or the loss of these customers could significantly reduce our future revenues and profits.

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI https://asc.fasb.org/topic&trid=2134479 + Details
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