Note 12 - Share-based Compensation (Tables)

12 Months Ended

Sep. 30, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

	2013			2012
Volatility	74.0%	-	81.0%	81.0%	-	82.0%
Risk-free interest rate	0.93%	-	1.70%	0.8%	-	1.1%
Forfeiture rate	10.0%			10.0%
Dividend yield	0.0%			0.0%
Expected life in years	6.4			5.4	-	6.4
Weighted average fair value of options granted during the period	$0.86			$0.88

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

	Number of Shares			Weighted Average Exercise Price
Fiscal 2012:
Outstanding October 1, 2011		4,181,339		$	2.40
Granted		1,237,500		$	1.33
Forfeited/expired		(1,955,500	)	$	3.67
Outstanding September 30, 2012		3,463,339		$	1.31
Exercisable September 30, 2012		2,575,857		$	1.25
Fiscal 2013:
Outstanding October 1, 2012		3,463,339		$	1.31
Granted		804,500		$	2.88
Forfeited/expired		(1,347,157	)	$	1.48
Exercised		(526,206	)	$	0.65
Outstanding September 30, 2013		2,394,476		$	1.89
Exercisable September 30, 2013		2,059,256		$	1.82
Weighted average fair value of options granted during the year				$	0.86

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

Range of Exercise Prices			Number Outstanding		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$0.46	-	$1.00		333,976		0.30	$	0.49		329,976	$	0.48
$1.01	-	$1.50		906,500		4.26	$	1.27		776,843	$	1.26
$1.51	-	$2.00		12,500		6.88	$	1.57		6,156	$	1.63
$2.01	-	$2.50		276,000		7.22	$	2.26		274,125	$	2.26
$2.51	-	$3.13		865,500		7.78	$	2.95		672,156	$	2.94
$0.46	-	$3.13		2,394,476		5.34	$	1.89		2,059,256	$	1.82

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

Years Ended September 30,	2013		2012
Cost of revenue	$	7,336	$	21,662
Selling, general and administrative		681,147		603,989
Research and development		47,895		58,800
Total	$	736,378	$	684,451