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Note 12 - Share-based Compensation (Tables)

12 Months Ended

Sep. 30, 2017

Notes Tables

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

		2017						2016
Volatility			42.6%	-	53.7%				49.0%	-	52.0%
Risk-free interest rate			1.73%	-	2.01%				1.0%	-	1.7%
Forfeiture rate				10.0%						10.0%
Dividend yield				0.0%					2.2%	-	2.7%
Expected life in years			3.8	-	4.6				3.2	-	4.6
Weighted average fair value of options granted during the period				$0.71						$0.70

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

		Number
		of Shares
Balance, September 30, 2016			-
Granted			250,000
Released			(125,000	)
Forfeited/cancelled			-
Balance, September 30, 2017			125,000

Share-based Compensation, Stock Options, Activity [Table Text Block]

		Number				Weighted Average
		of Shares				Exercise Price
Outstanding October 1, 2016			4,404,002			$	2.18
Granted			574,500			$	2.09
Forfeited/expired			(81,667	)		$	2.51
Exercised			(233,333	)		$	1.60
Outstanding September 30, 2017			4,663,502			$	2.16
Exercisable September 30, 2017			3,329,437			$	2.25

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

								Weighted
								Average				Weighted								Weighted
Range of								Remaining				Average								Average
Exercise				Number				Contractual				Exercise				Number				Exercise
Prices				Outstanding				Life				Price				Exercisable				Price
$0.93	-	$1.76			1,332,752				4.35			$	1.65				1,036,036			$	1.63
$1.77	-	$1.99			1,654,500				4.63			$	1.93				626,526			$	1.89
$2.00	-	$2.85			905,000				2.31			$	2.57				902,500			$	2.57
$2.86	-	$3.13			761,250				1.29			$	3.00				757,500			$	3.00
$3.14	-	$3.17			10,000				4.14			$	3.17				6,875			$	3.17
$0.93	-	$3.17			4,663,502				3.41			$	2.18				3,329,437			$	2.25

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Years Ended September 30,		2017				2016
Cost of revenues		$	24,151			$	24,092
Selling, general and administrative			998,540				478,695
Research and development			93,709				102,639
Total		$	1,116,400			$	605,426

X

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