Note 15 - Share-based Compensation (Tables)

12 Months Ended

Sep. 30, 2023

Notes Tables

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

	Years ended
	September 30,
	2023			2022
Volatility		52.4	%		50.8	%
Risk-free interest rate		4.0	%		2.6	%
Dividend yield		0.0	%		0.0	%
Expected term in years		5.8			5.2

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

`	Number of Shares			Weighted Average Grant Date Fair Value
Outstanding September 30, 2022		342,841		$	4.11
Granted		295,600		$	3.63
Released		(253,012	)	$	3.73
Forfeited/cancelled		(5,832	)	$	7.20
Outstanding September 30, 2023		379,597		$	3.99

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

	Number of Shares			Weighted Average Exercise Price
Outstanding September 30, 2022		3,940,899		$	3.31
Granted		1,907,500		$	2.92
Forfeited/expired		(1,891,612	)	$	3.86
Exercised		(1,052,265	)	$	1.95
Outstanding September 30, 2023		2,904,522		$	3.19
Exercisable September 30, 2023		842,667		$	3.51

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

Range of Exercise Prices			Number Outstanding		Weighted Average Remaining Contractual Term		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$1.51	-	$2.68		217,517		3.22	$	2.12		129,157	$	1.74
$2.69	-	$2.69		1,100,000		6.02	$	2.69		-	$	-
$3.09	-	$3.39		759,138		5.56	$	3.29		191,825	$	3.39
$3.40	-	$8.03		828,227		4.48	$	4.05		521,685	$	4.00
				2,904,882		5.25	$	3.19		842,667	$	3.51

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

	Years ended
	September 30,
	2023		2022
Cost of revenues	$	111	$	77
Selling, general and administrative		1,428		2,080
Research and development		103		70
	$	1,642	$	2,227