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Stock-Based Compensation (Tables)

6 Months Ended

Jul. 01, 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 the second quarter of 2012 and 2011 was as follows (in thousands):

	Three Months Ended								Six Months Ended
	July 1, 2012				July 3, 2011				July 1, 2012				July 3, 2011
Cost of revenue	$	39			$	35			$	71			$	70
Research and development	99				119				192				240
Selling, general and administrative	296				282				555				569
Total costs and expenses	$	434			$	436			$	818			$	879

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:

	Three Months Ended						Six Months Ended
	July 1, 2012			July 3, 2011			July 1, 2012			July 3, 2011
Expected term (years)	6.53			4.93			6.22			4.93
Risk-free interest rate	1.16	%		1.99	%		1.10	%		2.00	%
Expected volatility	59.03	%		58.69	%		59.65	%		58.50	%
Expected dividend yield	—			—			—			—

Schedule of Share-based Compensation, Activity

The following table summarizes the shares available for grant under the 2009 Plan as of July 1, 2012:

	Shares Available for Grant
	(in thousands)
Balance at January 1, 2012	2,969
Authorized	—
Options granted	(181	)
Options forfeited or expired	371
RSUs granted	(2	)
RSUs forfeited or expired	—
Balance at July 1, 2012	3,157

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 the first six months of 2012:

	Number of Shares			Weighted Average Exercise Price				Weighted Average Remaining Term			Aggregate Intrinsic Value
	(in thousands)							(in years)			(in thousands)
Balance outstanding at January 1, 2012	7,483			$	2.58
Granted	181			3.29
Forfeited or expired	(371	)		3.92
Exercised	(135	)		2.02
Balance outstanding at July 1, 2012	7,158			$	2.54			6.19			$	2,469
Exercisable at July 1, 2012	4,976			$	2.53			5.24			$	2,043
Vested and expected to vest at July 1, 2012	6,910			$	2.54			6.10			$	2,452

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

	RSUs Outstanding
	Number of Shares			Weighted Average Grant Date Fair Value
	(in thousands)
Nonvested at January 1, 2012	—			$	—
Granted	2			2.52
Vested	—			—
Forfeited	—			—
Nonvested at July 1, 2012	2			$	2.52

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:

	Three Months Ended						Six Months Ended
	July 1, 2012			July 3, 2011			July 1, 2012			July 3, 2011
Expected term (months)	6.08			6.00			6.08			6.00
Risk-free interest rate	0.14	%		0.10	%		0.14	%		0.10	%
Volatility	67.93	%		47.00	%		67.93	%		47.00	%
Dividend yield	—			—			—			—

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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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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value.

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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