Note 2 - Business Acquisition (Details Textual) - USD ($)				12 Months Ended		24 Months Ended
	Nov. 04, 2019	Nov. 01, 2019	Mar. 15, 2019	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020
C Enterprises [Member]
Revenues, Total				$ 10,900,000
C Enterprises [Member]
Payments to Acquire Businesses, Gross			$ 600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total			$ 0
C Enterprises [Member] | Selling, General and Administrative Expenses [Member]
Business Combination, Acquisition Related Costs					$ 100,000
Schrofftech [Member]
Payments to Acquire Businesses, Gross		$ 4,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 3,299,000
Business Combination, Contingent Consideration Arrangements, Target Period (Year)	2 years
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 2,400,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual				4,300,000
Schrofftech [Member] | Selling, General and Administrative Expenses [Member]
Business Combination, Acquisition Related Costs				$ 43,000	$ 108,000	$ 151,000