Note 15 - Share-based Compensation (Tables)

3 Months Ended

Dec. 31, 2019

Notes Tables

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

	Three months ended
	December 31, 2019
Volatility	40.2%
Risk-free interest rate	1.5%
Forfeiture rate	10.0%
Dividend yield	0.0%
Expected life in years	5.0

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

	Number of Shares			Weighted Average Grant Date Fair Value
Outstanding September 30, 2019		274,849		$	2.59
Granted		-		$	-
Released		-		$	-
Forfeited/cancelled		(2,222	)	$	2.50
Outstanding December 31, 2019		272,627		$	2.60

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

	Number of Shares			Weighted Average Exercise Price
Outstanding September 30, 2019		2,219,268		$	1.94
Granted		333,727		$	3.40
Forfeited/expired		(187,500	)	$	1.99
Exercised		(83,343	)	$	1.73
Outstanding December 31, 2019		2,282,152		$	2.17
Exerciseable December 31, 2019		1,539,220		$	1.97

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 Life	Price		Exercisable		Price
$1.31	-	$1.76		584,533	2.91	$	1.65		531,220	$	1.65
$1.86	-	$1.86		130,142	2.96	$	1.86		130,142	$	1.86
$1.99	-	$1.99		937,500	3.58	$	1.99		562,500	$	1.99
$2.02	-	$3.40		629,977	4.35	$	2.97		315,358	$	2.97
				2,282,152	3.59	$	2.17		1,539,220	$	1.97

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

	Three months ended
	December 31,
	2019		2018
Cost of revenues	$	3,642	$	4,298
Selling, general, and administrative		143,927		111,851
Research and development		10,758		17,696
	$	158,327	$	133,845