Note 7 - Stock-based Compensation and Equity Transactions (Tables)

6 Months Ended

Apr. 30, 2021

Notes Tables

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Six Months Ended April 30,
	2021			2020
Risk-free interest rate		0.39	%		1.57	%
Dividend yield		0.00	%		1.23	%
Expected life of the option (in years)		7.00			6.47
Volatility factor		51.94	%		49.14	%

Share-based Payment Arrangement, Option, Activity [Table Text Block]

				Weighted
				Average
	Shares			Exercise Price
Outstanding at November 1, 2020		789,179		$	4.66
Options granted		67,000		$	4.98
Options exercised		(156,701	)	$	3.10
Options cancelled		(91,793	)	$	5.88
Options outstanding at April 30, 2021		607,685		$	4.91
Options exercisable at April 30, 2021		270,082		$	5.24
Options vested and expected to vest at April 30, 2021		607,349		$	4.92