Note 1 - Business Activities and Summary of Significant Accounting Policies - Basic and Diluted Earnings Per Share (Details) - USD ($)	12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021
Consolidated net income (A)	$ 1,448,000	$ 6,181,000
Weighted average shares outstanding for basic earnings per share (B) (in shares)	10,120,254	9,978,683
Add effects of potentially dilutive securities - assumed exercise of stock options (in shares)	122,163	175,556
Weighted average shares outstanding for diluted earnings per share (C) (in shares)	10,242,417	10,154,239
Basic earnings per share (A)/(B) (in dollars per share)	$ 0.14	$ 0.62
Diluted earnings per share (A)/(C) (in dollars per share)	$ 0.14	$ 0.61