Note 6 - Income (Loss) Per Share - Basic and Diluted Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Basic (in shares)	10,495,548	10,290,911	10,452,597	10,256,158
Add effects of potentially dilutive securities-assumed exercise of stock options (in shares)	0	36,360	0	0
Diluted (in shares)	10,495,548	10,327,271	10,452,597	10,256,158