Note 6 - Segment Information - Net Sales, Income Before Provision for Income Taxes and Other Related Segment Information (Details) - USD ($)	12 Months Ended
	Oct. 31, 2025	Oct. 31, 2024
Net sales	$ 80,586,000	$ 64,857,000
Material cost	36,233,000	29,601,000
Salaries and benefits	13,441,000	12,730,000
Depreciation	528,000	557,000
Other costs of sales	3,648,000	3,098,000
Total cost of goods sold	53,850,000	45,986,000
Gross profit	26,736,000	18,871,000
Salaries and benefits	8,841,000	8,152,000
Engineering	2,982,000	2,782,000
Stock-based compensation expense	872,000	924,000
Commission and bonus	3,121,000	1,599,000
Depreciation	292,000	292,000
Amortization	1,643,000	1,687,000
Corporate and public company fees	1,615,000	1,513,000
Selling and general	4,556,000	4,544,000
Non-cash and one-time charges	1,029,000	201,000
Total operating expenses	24,951,000	21,694,000
Operating income (loss)	1,785,000	(2,823,000)
Other expense	(972,000)	(980,000)
Income (loss) before provision (benefit) for income taxes	813,000	(3,803,000)
Provision for income taxes	738,000	2,796,000
Consolidated net income (loss)	75,000	(6,599,000)
Total assets	73,046,000	71,046,000
Expenditures for Segment Assets	$ 235,000	$ 738,000