Note 10 - Share-based Compensation (Tables)

9 Months Ended

Jun. 30, 2016

Notes Tables

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

	Number			Weighted Average
	of Shares			Exercise Price
Outstanding October 1, 2015		2,852,419		$	2.35
Granted		725,000		$	1.82
Forfeited/expired		(226,250	)	$	2.25
Outstanding June 30, 2016		3,351,169		$	2.24
Exercisable June 30, 2016		2,780,311		$	2.30

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

	Three months ended				Nine months ended
	June 30,				June 30,
	2016		2015		2016		2015
Cost of revenues	$	6,157	$	7,024	$	17,895	$	18,695
Selling, general and administrative		115,864		119,653		362,224		350,099
Research and development		26,001		26,186		76,160		92,923
Total	$	148,022	$	152,863	$	456,279	$	461,717

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

	Nine months ended
	June 30,
	2016			2015
Volatility	49.0%	-	52.0%	51.0%	-	62.0%
Risk-free interest rate	1.1%	-	1.7%	1.0%	-	1.6%
Forfeiture rate		10.0%			10.0%
Dividend yield	2.2%	-	2.7%		0.0%
Expected life in years	3.2	-	4.6	3.2	-	4.6%