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

9 Months Ended

Jul. 31, 2022

Notes Tables

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

	Nine Months Ended July 31,
	2022			2021
Risk-free interest rate		1.47	%		0.58	%
Dividend yield		0.00	%		0.00	%
Expected life of the option (years)		7.00			7.00
Volatility factor		53.36	%		52.34	%

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

				Weighted
				Average
	Shares			Exercise Price
Outstanding at November 1, 2021		618,858		$	5.31
Options granted		145,001		$	6.94
Options exercised		(60,854	)	$	2.45
Options cancelled		(12,000	)	$	7.58
Options outstanding at July 31, 2022		691,005		$	5.87
Options exercisable at July 31, 2022		357,715		$	6.14
Options vested and expected to vest at July 31, 2022		685,154		$	5.88