Note 15 - Share-based Compensation (Tables)

3 Months Ended

Dec. 31, 2023

Notes Tables

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

	Three months ended
	December 31,
	2023			2022
Volatility		57.8	%		52.1	%
Risk-free interest rate		4.3	%		4.1	%
Dividend yield		0.0	%		0.0	%
Expected term in years		4.2			6.1

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

	Number of Shares			Weighted Average Grant Date Fair Value
Outstanding September 30, 2023		379,597		$	3.94
Granted		10,000		$	1.73
Released		(10,000	)	$	2.87
Forfeited/cancelled		-		$	-
Outstanding December 31, 2023		379,597		$	3.91

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

	Number of Shares			Weighted Average Exercise Price
Outstanding September 30, 2023		2,904,522		$	3.19
Granted		887,250		$	1.70
Forfeited/expired		(25,000	)	$	1.70
Exercised		-		$	-
Outstanding December 31, 2023		3,766,772		$	2.85
Exerciseable December 31, 2023		992,981		$	3.48

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

					Weighted Average		Weighted Average				Weighted Average
Range of			Number		Remaining		Exercise		Number		Exercise
Exercise Prices			Outstanding		Contractual Term		Price		Exercisable		Price
$1.51	-	$1.76		991,407		6.29	$	1.71		104,157	$	1.75
$2.64	-	$2.68		88,000		6.60	$	2.67		-	$	-
$2.69	-	$2.69		1,100,000		5.77	$	2.69		125,000	$	2.69
$3.09	-	$8.03		1,587,365		4.75	$	3.69		763,824	$	3.84
				3,766,772		5.49	$	2.85		992,981	$	3.48

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	Three Months Ended
	December 31,
	2023		2022
Cost of revenues	$	39	$	28
Selling, general and administrative		380		373
Research and development		27		19
	$	446	$	420