Note 15 - Share-based Compensation (Tables)

6 Months Ended

Mar. 31, 2024

Notes Tables

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

	Six months ended
	March 31,
	2024		2023
Volatility		57.8%		52.1%
Risk-free interest rate		4.3%		4.0%
Dividend yield		0.0%		0.0%
Expected term in years		4.2		5.8

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		238,711		$	2.06
Released		(239,233	)	$	3.99
Forfeited/cancelled		(7,533	)	$	4.08
Outstanding March 31, 2024		371,542		$	2.69

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		897,250		$	1.70
Forfeited/expired		(423,948	)	$	2.85
Exercised		-		$	-
Outstanding March 31, 2024		3,377,824		$	2.84
Exerciseable March 31, 2024		1,097,178		$	3.49

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		910,375		6.00	$	1.71		103,125	$	1.75
$2.64	-	$2.68		88,000		6.26	$	2.67		-	$	-
$2.69	-	$2.69		1,031,250		5.37	$	2.69		131,250	$	2.69
$3.09	-	$8.03		1,348,199		4.23	$	3.73		862,803	$	3.82
				3,377,824		5.11	$	2.84		1,097,178	$	3.49

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

	Three Months Ended				Six Months Ended
	March 31,				March 31,
	2024		2023		2024		2023
Cost of revenues	$	28	$	19	$	42	$	29
Selling, general and administrative		439		453		827		831
Research and development		57		41		101		73
	$	524	$	513	$	970	$	933