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Note 1 - Business Activities and Summary of Significant Accounting Policies (Details Textual) - USD ($)			12 Months Ended
	Mar. 01, 2022	Nov. 04, 2019	Oct. 31, 2023	Oct. 31, 2022	Jan. 31, 2023
Goodwill			$ 8,085,000	$ 8,085,000
Asset Impairment Charges			0	0
Amortization of Intangible Assets, Total			1,701,000	1,282,000
Advertising Expense			76,000	333,000
Research and Development Expense			3,151,000	2,913,000
Stock-based compensation expense			$ 898,000	$ 689,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			811,135	508,889
Trademarks [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			$ 0	$ 0
Microlab/FXR LLC [Member]
Business Combination, Consideration Transferred	$ 24,500,000
Payments to Acquire Businesses, Gross	24,250,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			17,200,000
Goodwill			5,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			11,600,000
Schrofftech [Member]
Business Combination, Consideration Transferred	24,475,000	$ 5,300,000
Payments to Acquire Businesses, Gross	24,250,000	4,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	24,475,000		3,100,000
Goodwill	5,617,000		1,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 13,840,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets			500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 1,500,000
Schrofftech [Member] | Earn Out [Member]
Business Combination, Consideration Transferred, Liabilities Incurred		$ 1,300,000
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)			3 years
Minimum [Member] | Microlab/FXR LLC [Member]
Finite-Lived Intangible Asset, Useful Life (Year)					1 year
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)			5 years
Maximum [Member] | Microlab/FXR LLC [Member]
Finite-Lived Intangible Asset, Useful Life (Year)					15 years
Weighted Average [Member]
Finite-Lived Intangible Asset, Useful Life (Year)			8 years 6 months 18 days

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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