Condensed Consolidated Statements of Operations (unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Jul. 01, 2011	Jul. 02, 2010	Jul. 01, 2011	Jul. 02, 2010
Revenues		$ 4,112		$ 4,899
Cost of revenues (inclusive of amortization and impairment of acquisition-related intangible assets)		14,852		16,029
Gross margin		(10,740)		(11,130)
Operating expenses:
Research and development		5,300		9,670
Selling, marketing and administrative	2,984	3,994	5,366	9,452
Amortization of acquisition-related intangible assets		1,077		1,402
Restructuring charges		2,289	38	2,879
Impairment of long-lived assets		4,838		4,838
Total operating expenses	2,984	17,498	5,404	28,241
Operating loss	(2,984)	(28,238)	(5,404)	(39,371)
Interest and other income, net	2,795	1,671	8,127	3,534
Income (loss) from continuing operations before income taxes	(189)	(26,567)	2,723	(35,837)
Benefit from (provision for) income taxes	(1,361)	7,353	(2,456)	8,774
Income (loss) from continuing operations, net of taxes	(1,550)	(19,214)	267	(27,063)
Income (loss) from discontinued operations, net of taxes	1,910	(662)	1,910	(52)
Gain on disposal of discontinued operations, net of taxes	4,920	10,746	4,920	11,012
Income from discontinued operations, net of taxes	6,830	10,084	6,830	10,960
Net income (loss)	$ 5,280	$ (9,130)	$ 7,097	$ (16,103)
Basic
Income (loss) from continuing operations, net of taxes (in Dollars per share)	$ (0.01)	$ (0.16)	$ 0.00	$ (0.23)
Income from discontinued operations, net of taxes (in Dollars per share)	$ 0.06	$ 0.08	$ 0.06	$ 0.09
Net income (loss) (in Dollars per share)	$ 0.05	$ (0.08)	$ 0.07	$ (0.13)
Diluted
Income (loss) from continuing operations, net of taxes (in Dollars per share)	$ (0.01)	$ (0.16)	$ 0.00	$ (0.23)
Income from discontinued operations, net of taxes (in Dollars per share)	$ 0.06	$ 0.08	$ 0.06	$ 0.09
Net income (loss) (in Dollars per share)	$ 0.05	$ (0.08)	$ 0.07	$ (0.13)
Shares used in computing income (loss) per share:
Basic (in Shares)	108,813	119,675	108,807	119,539
Diluted (in Shares)	108,949	119,675	108,912	119,539

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This element represents the overall income (loss) from a disposal group apportioned to the parent that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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The amount of net income (loss) derived from discontinued operations during the period, net of related tax effect, per each share of common stock or unit outstanding during the reporting period.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business).

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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The net result for the period of deducting operating expenses from operating revenues.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

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+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration