Note 7 - Loss Per Share - Basic and Diluted Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Basic (in shares)	10,290,265	10,127,244	10,267,652	10,100,767
Add effects of potentially dilutive securities-assumed exercise of stock options (in shares)	0	111,688	0	132,442
Diluted (in shares)	10,290,265	10,238,932	10,267,652	10,233,209