Equity (Tables)

6 Months Ended

Mar. 31, 2013

Equity [Abstract]

Schedule of Stock Options Activity

The following table summarizes stock option activity under the Equity Plans for the six months ended March 31, 2013:

	Number of Shares		Weighted Average Exercise Price	Weighted Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (*) (in thousands)
Outstanding as of September 30, 2012	2,032,215		$17.76
Granted	35,400		$5.11
Exercised	(76,179	)	$4.94		$	92
Forfeited	(44,088	)	$7.66
Expired	(178,515	)	$20.48
Outstanding as of March 31, 2013	1,768,833		$18.04	4.80
Exercisable as of March 31, 2013	1,456,747		$20.73	4.19	$	365
Vested and expected to vest as of March 31, 2013	1,731,105		$18.32	4.72	$	634

(*) Intrinsic value for stock options represents the “in-the-money” portion or the positive variance between a stock option's exercise price and the underlying stock price.

Schedule of Valuation Assumptions

The fair value of each stock option grant was estimated on the date of grant using the Black-Scholes option valuation model, adhering to the straight-line attribution approach using the following weighted-average assumptions, of which the expected term and stock price volatility rate are highly subjective:

	For the Three Months Ended March 31,					For the Six Months Ended March 31,
	2013		2012			2013			2012
Black-Scholes weighted average assumptions:
Expected dividend rate	—	%	—		%	—		%	—		%
Expected stock price volatility rate	96.5	%	103.9		%	96.9		%	105.2		%
Risk-free interest rate	1.1	%	1.0		%	1.0		%	0.9		%
Expected term (in years)	6.0		5.0			6.0			5.0
Weighted average grant date fair value per share of stock options granted:	$4.28		$	3.46		$	3.94		$	3.23

Schedule of Restricted Stock Activity

The following table summarizes the activity related to RSAs and RSUs for the six months ended March 31, 2013:

Restricted Stock Activity	Restricted Stock Awards			Restricted Stock Units
	Number of Shares		Weighted Average Grant Date Fair Value	Number of Shares		Weighted Average Grant Date Fair Value
Non-vested as of September 30, 2012	216,703		$5.83	700,043		$4.44
Granted	—		—	480,800		$4.72
Vested	(102,630	)	$5.68	(174,175	)	$3.87
Forfeited	(4,063	)	$5.68	(25,720	)	$4.47
Non-vested as of March 31, 2013	110,010		$5.98	980,948		$4.68

Schedule of Stock-based Compensation Expense - By Award Type

The effect of recording stock-based compensation expense was as follows:

Stock-based Compensation Expense - by award type	For the Three Months Ended March 31,				For the Six Months Ended March 31,
(in thousands)	2013		2012		2013		2012
Employee stock options	$	123	$	1,088	$	381	$	2,135
Restricted stock awards and units	515		946		921		1,521
Employee stock purchase plan	125		189		256		413
401(k) match in common stock	257		245		513		475
Outside director fees in common stock	31		74		62		178
Total stock-based compensation expense	$	1,051	$	2,542	$	2,133	$	4,722

Schedule Stock-based Compensation Expense - By Expense Type

Stock-based Compensation Expense - by expense type	For the Three Months Ended March 31,				For the Six Months Ended March 31,
(in thousands)	2013		2012		2013		2012
Cost of revenue	$	290	$	593	$	605	$	1,069
Selling, general, and administrative	459		1,233		841		2,246
Research and development	302		716		687		1,407
Total stock-based compensation expense	$	1,051	$	2,542	$	2,133	$	4,722

Schedule of Earnings Per Share, Basic and Diluted

Income (Loss) Per Share.

The following table sets forth the computation of basic and diluted net income (loss) per share:

Basic and Diluted Net Income (Loss) Per Share	For the Three Months Ended March 31,						For the Six Months Ended March 31,
(in thousands, except per share)	2013			2012			2013			2012
Numerator - Net income (loss)	$	11,697		$	(9,335	)	$	14,523		$	(23,564	)
Less: Undistributed earnings allocated to participating securities	(94		)	—			(118		)	—
Undistributed earnings allocated to common shareholders for basic net income (loss) per share	$	11,603		$	(9,335	)	$	14,405		$	(23,564	)
Undistributed earnings allocated to common shareholders for diluted net income (loss) per share	$	11,603		$	(9,335	)	$	14,405		$	(23,564	)
Denominator:
Denominator for basic net income (loss) per share - weighted average shares outstanding	26,310			23,529			26,142			23,577
Dilutive options outstanding, unvested stock units and ESPP	332			—			290			—
Denominator for diluted net income (loss) per share - adjusted weighted average shares outstanding	26,642			23,529			26,432			23,577
Basic net income (loss) per share	$	0.44		$	(0.40	)	$	0.55		$	(1.00	)
Diluted net income (loss) per share	$	0.44		$	(0.40	)	$	0.54		$	(1.00	)
Weighted average antidilutive options, unvested restricted stock units and warrants excluded from the computation	1,869			3,587			2,265			3,384
Average market price of common stock	$	5.66		$	4.72		$	5.16		$	4.31

Schedule of Common Stock Reserved for Future Issuances

As of March 31, 2013, we had common stock reserved for the following future issuances:

Future Issuances	Number of Common Stock Shares Available for Future Issuances
Exercise of outstanding stock options	1,768,833
Unvested restricted stock units	980,948
Purchases under the employee stock purchase plan	636,001
Issuance of stock-based awards under the Equity Plans	588,650
Exercise of outstanding warrants	400,001
Purchases under the officer and director share purchase plan	94,811
Total reserved	4,469,244