STOCK BASED COMPENSATION (Tables)

9 Months Ended

Jun. 30, 2014

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

Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]

We determine the fair value of the ESPP awards using the Black-Scholes pricing model. Underlying assumptions used were as follows:

	Nine Months Ended June 30,
	2014	2013
Expected life (in years)	0.5	0.5
Expected volatility	37.1% - 50.3%	47.6% - 49.8%
Expected dividend	—	—
Risk-free interest rate	0.07% - 0.08%	0.11% - 0.14%

Compensation costs related to the stock-based compensation plans

Compensation cost related to our Plan and ESPP is as follows:

	Three Months Ended June 30,				Nine Months Ended June 30,
	2014		2013		2014		2013
	(in thousands)
Cost of revenues	$	210	$	161	$	619	$	459
Engineering, research and development	573		428		1,643		1,193
Selling, general and administrative	803		567		2,204		1,653
Total stock-based compensation expense	$	1,586	$	1,156	$	4,466	$	3,305

Activity under all stock option plans

Activity in stock option awards is as follows:

	Shares   (in thousands)		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life  (years)	Aggregate Intrinsic Value (in thousands)
Options outstanding, September 30, 2013	2,089		$	13.43	6.67	$	591
Granted	1,014		2.53
Exercised	(49	)	2.35
Cancelled or expired	(90	)	86.22
Options outstanding, June 30, 2014	2,964		7.64		7.23	1,792
Options exercisable, June 30, 2014	1,649		$	11.67	5.85	$	578

Summary of assumptions used to value stock options granted in connection with stock incentive plans

The per share fair values of time-based stock options granted in connection with stock incentive plans have been estimated using the following weighted average assumptions:

	Nine Months Ended June 30,
	2014	2013
Expected life (in years)	5.79	5.65
Expected volatility:
Weighted-average	81.5%	82.0%
Range	79.5% - 81.6%	79.8% - 82.1%
Expected dividend	—	—
Risk-free interest rate	1.7% - 1.9%	.9% - 1.0%

Schedule of Shares Authorized under Stock Option Plans by Exercise Price Range

The following table provides additional information in regards to options outstanding as of June 30, 2014:

	Options Outstanding				Options Exercisable
Range of Exercise Price	Number Outstanding (in thousands)	Weighted Average Remaining Contractual Life (Years)	Weighted Average Exercise Price		Number Exercisable (in thousands)	Weighted Average Exercise Price
$2.10 - $2.26	424	8.68	$	2.11	194	$	2.10
2.53	987	9.45	2.53		116	2.53
2.54 - 4.36	750	7.03	3.45		542	3.50
4.60 - 41.20	594	5.08	7.89		588	7.91
42.00 - 145.40	209	0.67	57.39		209	57.39
$2.10 - $145.40	2,964	7.23	$	7.64	1,649	$	11.67

Summary of restricted stock unit activity

Activity for our restricted stock award units is as follows:

	Restricted Stock Units (in thousands)		Weighted Average Grant-Date Fair Value per Share		Weighted Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (in thousands)
Restricted stock units, September 30, 2013	2,021		$	2.65	1.13	$	6,143
Awarded	1,600		2.62
Released	(1,179	)	2.69
Forfeited	(65	)	2.42
Restricted stock units, June 30, 2014	2,377		$	2.62	1.21	$	8,200