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Note 10 - Business and Credit Concentrations, Major Customers and Geographic Information (Details Textual) $ in Millions	12 Months Ended
	Oct. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)
Number of Reportable Segments	1
Customer One [Member]
Revenues	$ 10.9	$ 11.8
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Number of Customers	1	1
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer One [Member]
Concentration Risk, Percentage	16.40%	16.30%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member]
Concentration Risk, Percentage	9.80%	6.30%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member]
Concentration Risk, Percentage	7.70%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | UNITED STATES
Concentration Risk, Percentage	79.00%	82.00%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | Non-US [Member]
Concentration Risk, Percentage	21.00%	18.00%

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Number of customers for a concentration risk benchmark.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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