Note 6 - (Loss) Earnings Per Share - Computation of Basic and Diluted Weighted Average Shares Outstanding (Details) - shares	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Basic (in shares)	9,864,689	9,564,533
Add effects of potentially dilutive securities-assumed exercise of stock options (in shares)		308,803
Weighted average shares outstanding for diluted (loss) earnings per share (in shares)	9,864,689	9,873,336