Note 12 - Equity Transactions and Stock-based Compensation (Tables)

12 Months Ended

Jun. 30, 2022

Notes Tables

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

Risk Free Interest Rate		0.01% to 3.20	%
Volatility		115.1% to 169.0	%
Term		4.5 to 10 years
Dividend Rate		0.00	%
Closing Price of Common Stock	$	0.95
Closing Price of Common Stock	$	0.51

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

				Weighted
				Average
				Exercise
	Options			Price
Outstanding as of July 1, 2020		3,344,000		$	0.16
Granted		770,000			0.66
Exercised		(157,334	)		0.15
Terminated		(3,333	)		0.21
Expired		(36,667	)		0.21
Outstanding as of June 30, 2021		3,916,666			0.26
Granted		764,700			0.85
Exercised		(146,333	)		0.23
Terminated		(44,700	)		0.53
Expired		(46,400	)		0.47
Outstanding as of June 30, 2022		4,443,933		$	0.36
Exercisable at June 30, 2021		3,114,099		$	0.19
Exercisable at June 30, 2022		3,524,500		$	0.26

Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

												Weighted
							Weighted		Weighted Average			Average
							Average		Remaining			Exercise
Range of Exercise Price					Outstanding		Exercise Price		Contractual Life (years)	Exercisable		Price
$	0.09	-	$	0.10		1,296,000	$	0.09	2.9		1,296,000	$	0.09
$	0.21	-	$	0.21		1,209,000		0.21	6.9		1,209,000		0.21
$	0.23	-	$	0.25		450,000		0.23	4.4		450,000		0.23
$	0.51	-	$	0.51		200,000		0.51	10.0		-		-
$	0.65	-	$	0.65		601,333		0.65	8.4		298,667		0.65
$	0.72	-	$	0.72		150,000		0.72	5.9		83,333		0.72
$	0.95	-	$	0.95		435,100		0.95	9.4		150,000		0.95
$	1.05	-	$	1.05		102,500		1.05	6.9		37,500		1.05
$	0.09	-	$	1.05		4,443,933	$	0.36	7.0		3,524,500	$	0.26