Stock-Based Compensation (Tables)

3 Months Ended

Dec. 28, 2012

Stock-Based Compensation by Functional Line Item

The following table presents stock-based compensation by functional line item presented on the unaudited consolidated condensed statements of operations:

	Three Months Ended
	December 28,		December 30,
	2012		2011
	(in thousands)
Cost of goods sold	$	45	$	(43	)
Research and development		913		652
Selling, general and administrative		1,713		1,541
Total stock-based compensation	$	2,671	$	2,150

Stock Option Grant Date Fair Value Estimated Using Black-Scholes Pricing Model

Stock option grant date fair value was estimated using the Black-Scholes pricing model with the following weighted-average assumptions:

	Three Months Ended
	December 28,		December 30,
	2012		2011
Weighted-average assumptions:
Expected option life		*		3.5 years
Risk-free interest rate		*		0.6	%
Expected volatility		*		91	%
Dividend yield		*		—
Weighted-average grant date fair value per share		*	$	3.26

* No stock options were granted during the period.

Stock Option Activity

The following tables summarize stock option activity:

						Weighted-Average		Aggregate
	Number			Weighted-Average		Remaining		Intrinsic
	of Shares			Exercise Price		Contractual Term		Value
	(in thousands)							(in thousands)
Outstanding at September 28, 2012		2,375		$	6.71		5.1 years	$	648
Granted		—			—
Exercised		(73	)		2.10
Forfeited or expired		(143	)		9.27
Outstanding at December 28, 2012		2,159		$	6.69		5.2 years	$	998
Vested and expected to vest		2,085		$	6.69		5.2 years	$	991
Exercisable at December 28, 2012		1,330		$	6.61		4.3 years	$	920

	Remaining
	Unrecognized		Remaining
	Compensation		Years
Vesting Condition	Cost		to Vest
	(in thousands)
Service-based	$	2,245		0.9

Stock Award Activity

The following tables summarize stock award activity:

				Weighted-
				Average
	Number			Grant Date		Fair Value of
	of Shares			Fair Value		Shares Vested
	(in thousands)					(in thousands)
Outstanding at September 28, 2012		2,620		$	6.29
Granted		344			3.63
Vested		(225	)		6.99	$	774
Forfeited		(167	)		8.22
Outstanding at December 28, 2012		2,572		$	6.09
				Remaining
				Unrecognized		Remaining
				Compensation		Years
Vesting Condition				Cost		to Vest
				(in thousands)
Service-based					11,447		0.9
Market-based					5		0.1
Stock awards					11,452