Note 9 - Stock-Based Compensation (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

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

						Weighted-average
						remaining		Aggregate
				Weighted-average		contractual term		intrinsic value
	Number of shares			exercise price		(in years)		(in thousands)
Outstanding at September 30, 2020		1,750,000		$	4.68			$	-
Granted		1,380,000			3.91				-
Exercised		(147,953	)		2.60
Forfeited		(279,547	)		4.47
Outstanding at September 30, 2021		2,702,500			4.42		5.13		-
Granted		1,060,000			0.97				-
Exercised		-			-
Forfeited		(1,260,000	)		3.63
Outstanding at September 30, 2022		2,502,500			3.36		4.55		-
Exercisable at September 30, 2022		1,549,167		$	4.13		4.69	$	-