Note 14 - Share-based Compensation (Tables)

12 Months Ended

Sep. 30, 2019

Notes Tables

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

	2018
Volatility		45.4	%
Risk free interest rate		2.18	%
Forfeiture rate		10.0	%
Dividend yield		0.0	%
Expected life in years		4.6
Weighted average FV	$	0.89

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

	Number of Shares			Weighted Average Grant Date Fair Value
Outstanding September 30, 2018		218,330		$	2.24
Granted		249,300		$	2.65
Released		(156,115	)	$	2.23
Forfeited/cancelled		(36,666	)	$	2.39
Outstanding September 30, 2019		274,849		$	2.59

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

	Number of Shares			Weighted Average Exercise Price
Outstanding September 30, 2018		3,394,858		$	2.18
Granted		-		$	-
Forfeited/expired		(769,439	)	$	2.99
Exercised		(406,151	)	$	1.86
Outstanding September 30, 2019		2,219,268		$	1.94
Exerciseable September 30, 2019		1,405,578		$	1.93

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

Range of Exercise Prices			Number Outstanding	Weighted Average Remaining Contractural Life		Weighted Average Exercise Price	Number Exercisable		Weighted Avrage Exercise Price
$1.31	-	$1.76	637,876	3.25	$	1.65	576,155	$	1.64
$1.86	-	$1.86	160,142	3.21	$	1.86	160,142	$	1.86
$1.99	-	$1.99	1,125,000	3.84	$	1.99	375,000	$	1.99
$2.02	-	$1.99	296,250	2.07	$	2.49	294,281	$	2.50
			2,219,268	3.39	$	1.95	1,405,578	$	1.94

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

	Year ended September 30,
	2019		2018
Cost of revenues	$	15,792	$	21,388
Selling, general, and administrative		665,295		479,165
Research and development		53,916		84,320
	$	735,003	$	584,873