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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 30, 2012

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

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The impact of the amended authoritative guidance on the Company's consolidated financial statements for fiscal years 2012, 2011 and 2010 was as follows (in thousands):



	Fiscal Years
	2012		2011		2010
Cost of revenue	$	179	$	131	$	169
Research and development	455		458		645
Selling, general and administrative	1,369		1,087		1,604
Total costs and expenses	$	2,003	$	1,676	$	2,418

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following weighted average assumptions are included in the estimated fair value calculations for stock option grants:



	Fiscal Years
	2012		2011		2010
Expected term (years)	6.3		5.7		5.4
Risk-free interest rate	0.98	%	1.16	%	2.40	%
Expected volatility	61	%	61	%	58	%
Expected dividend	—		—		—

Schedule of Share-based Compensation, Activity

The following table summarizes the shares available for grant under the 2009 Plan for 2012:



	Shares Available for Grant
	(in thousands)
Balance at January 1, 2012	2,969
Options granted	(791	)
Options forfeited or expired	935
RSUs granted	(193	)
Balance at December 30, 2012	2,920

Schedule of Share-based Compensation, Stock Options, Activity

The following table summarizes stock options outstanding and stock option activity under the 1999 Plan and the 2009 Plan, and the related weighted average exercise price, for 2012, 2011 and 2010:



	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Term	Aggregate Intrinsic Value
	(in thousands)				(in years)	(in thousands)
Balance outstanding at January 3, 2010	8,331		$	3.37
Granted	1,739		2.79
Forfeited or expired	(832	)	9.35
Exercised	(1,169	)	2.59
Balance outstanding at January 2, 2011	8,069		2.74
Granted	876		2.81
Forfeited or expired	(803	)	4.51
Exercised	(659	)	2.46
Balance outstanding at January 1, 2012	7,483		2.58
Granted	791		2.43
Forfeited or expired	(935	)	3.04
Exercised	(379	)	1.87
Balance outstanding at December 30, 2012	6,960		$	2.55	6.33	$	1,683
Exercisable at December 30, 2012	4,991		$	2.54	5.44	$	1,556
Vested and expected to vest at December 30, 2012	6,573		$	2.55	6.18	$	1,666

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range

Significant exercise price ranges of options outstanding, related weighted average exercise prices and contractual life information at the end of 2012 were as follows:



	Options Outstanding				Options Exercisable
Range of Exercise Prices	Options Outstanding	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price		Options Vested and Exercisable	Weighted Average Exercise Price
	(in thousands)	(in years)			(in thousands)
$0.78 - $1.29	650	5.77	$	0.90	648	$	0.90
1.63 - 1.63	1,215	6.11	1.63		1,090	1.63
1.75 - 2.72	722	8.67	2.22		113	2.44
2.73 - 2.76	292	2.48	2.75		279	2.75
2.78 - 2.78	2,227	7.82	2.78		1,165	2.78
2.82 - 3.02	857	3.85	2.96		811	2.96
3.04 - 4.17	901	5.44	3.89		792	3.94
4.36 - 5.94	81	2.83	5.23		81	5.23
6.00 - 6.00	5	8.07	6.00		2	6.00
6.53 - 6.53	10	0.75	6.53		10	6.53
$0.78 - $6.53	6,960	6.33	$	2.55	4,991	$	2.54

Schedule of Share-based compensation related to RSU

The stock-based compensation related to grants of vested RSUs was $341,000 in 2012.



	RSUs Outstanding
	Number of Shares		Weighted Average Grant Date Fair Value
	(in thousands)
Nonvested at January 2, 2012	—		$	—
Granted	193		2.23
Vested	(153	)	2.18
Forfeited	—		—
Nonvested at December 30, 2012	40		$	2.30

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumption

The fair value of rights issued pursuant to the Company's ESPP was estimated on the commencement date of each offering period using the following weighted average assumptions:



	Fiscal Years
	2012		2011		2010
Expected life (months)	6.00		6.10		5.96
Risk-free interest rate	0.14	%	0.08	%	0.19	%
Volatility	56	%	56	%	60	%
Dividend yield	—		—		—

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

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- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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