Income Taxes	3 Months Ended
Mar. 30, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Note 15. Income Taxes The Company accounts for income taxes under the provisions of ASC 740, Accounting for Income Taxes. The Company adjusts its effective tax rate each quarter to be consistent with the estimated annual effective tax rate. The Company also records the tax effect of unusual or infrequently occurring discrete items, including changes in judgment about valuation allowances and effects of changes in tax laws or tax rates, in the interim period in which they occur. The Company's effective tax rate reflects the impact of a portion of its earnings being taxed in foreign jurisdictions as well as a valuation allowance maintained on certain deferred tax assets. The Company recorded a tax benefit of $4.2 million and a tax provision of $2.0 million for the three month periods ended March 30, 2013 and March 31, 2012, respectively. The change during the three months ended March 30, 2013 compared to the corresponding period in 2012 is primarily due to the Company having a net loss for the quarter ending March 30, 2013, compared to net income in the quarter ended March 31, 2012, as well as a one-time benefit of $0.5 million recorded during the three month period ended March 30, 2013 related to the retroactive reinstatement of the 2012 federal R&D Tax Credit. As of March 30, 2013, the Company continued to maintain a valuation allowance against certain net deferred tax assets as a result of uncertainties regarding the realization of the asset due to cumulative losses and uncertainty of future taxable income in various tax jurisdictions. In the event that the Company determines that the deferred tax assets are realizable, an adjustment to the valuation allowance will be reflected in the tax provision for the period such determination is made. The Company is subject to taxation in the United States and various states including California, and foreign jurisdictions including South Korea, Japan, China, Germany, France and the United Kingdom. Due to tax attribute carry-forwards, the Company is subject to examination by the IRS for tax years beginning from the 2003 tax year for U.S. tax purposes. The Company is also subject to examination in various states for tax years beginning from the 2002 tax year. The Company is also subject to examination in various foreign jurisdictions beginning from the 2006 tax year. The Company accrues interest and penalties related to unrecognized tax benefits in its provision for income taxes. The total amount of accrued penalties and interest is not material for the three month period ended March 30, 2013. The Company reduced its unrecognized tax benefits by an immaterial amount during the period ended March 30, 2013 as a result of a lapse of statute of limitations in Japan. During the next twelve months, the Company anticipates increases in its unrecognized tax benefits of approximately $0.5 million.

Income Taxes

3 Months Ended

Mar. 30, 2013

Note 15. Income Taxes

The Company accounts for income taxes under the provisions of ASC 740, Accounting for Income Taxes. The Company adjusts its effective tax rate each quarter to be consistent with the estimated annual effective tax rate. The Company also records the tax effect of unusual or infrequently occurring discrete items, including changes in judgment about valuation allowances and effects of changes in tax laws or tax rates, in the interim period in which they occur. The Company's effective tax rate reflects the impact of a portion of its earnings being taxed in foreign jurisdictions as well as a valuation allowance maintained on certain deferred tax assets.

The Company recorded a tax benefit of $4.2 million and a tax provision of $2.0 million for the three month periods ended March 30, 2013 and March 31, 2012, respectively. The change during the three months ended March 30, 2013 compared to the corresponding period in 2012 is primarily due to the Company having a net loss for the quarter ending March 30, 2013, compared to net income in the quarter ended March 31, 2012, as well as a one-time benefit of $0.5 million recorded during the three month period ended March 30, 2013 related to the retroactive reinstatement of the 2012 federal R&D Tax Credit.

As of March 30, 2013, the Company continued to maintain a valuation allowance against certain net deferred tax assets as a result of uncertainties regarding the realization of the asset due to cumulative losses and uncertainty of future taxable income in various tax jurisdictions. In the event that the Company determines that the deferred tax assets are realizable, an adjustment to the valuation allowance will be reflected in the tax provision for the period such determination is made.

The Company is subject to taxation in the United States and various states including California, and foreign jurisdictions including South Korea, Japan, China, Germany, France and the United Kingdom. Due to tax attribute carry-forwards, the Company is subject to examination by the IRS for tax years beginning from the 2003 tax year for U.S. tax purposes. The Company is also subject to examination in various states for tax years beginning from the 2002 tax year. The Company is also subject to examination in various foreign jurisdictions beginning from the 2006 tax year.

The Company accrues interest and penalties related to unrecognized tax benefits in its provision for income taxes. The total amount of accrued penalties and interest is not material for the three month period ended March 30, 2013. The Company reduced its unrecognized tax benefits by an immaterial amount during the period ended March 30, 2013 as a result of a lapse of statute of limitations in Japan. During the next twelve months, the Company anticipates increases in its unrecognized tax benefits of approximately $0.5 million.