Income Taxes	6 Months Ended
Jul. 02, 2011
Income Tax Expense (Benefit) [Abstract]
Income Tax Disclosure [Text Block]	Income Taxes: We are subject to federal income tax as well as income tax of multiple state and foreign jurisdictions. We are no longer subject to federal, state and local, or foreign income tax examinations for years before 2001. We have federal net operating loss carryforwards that expire at various dates between 2023 and 2029. We have state net operating loss carryforwards that expire at various dates from 2011 through 2029. We also have federal and state credit carryforwards, some of which do not expire, with the remainder expiring at various dates from 2011 through 2031. We have provided a valuation allowance equal to our net federal and state deferred tax assets as we have not met the more-likely-than-not realization threshold for deferred tax asset recognition. We evaluate both positive and negative evidence to determine if some or all of our deferred tax assets should be recognized on a quarterly basis. In future periods, if we determine that we are more-likely-than-not to realize some or all of our deferred tax assets, we will recognize a deferred tax asset and a benefit in the period in which such determination is made. As of July 2, 2011, the net deferred tax asset relates to foreign jurisdictions where we have concluded it is more-likely-than-not that we will realize the net deferred tax assets in future periods. The Internal Revenue Service (“IRS”) has examined our income tax returns for 2001 and 2002, and has issued proposed adjustments of $1.4 million, plus interest. These adjustments relate to the treatment of acquisition costs and a tax accounting method change for prepaid expenses. Although we do not agree with the proposed adjustment related to the prepaid expense matter, we believe that we have reached a tentative agreement concerning the acquisition costs. During the three months ended March 29, 2008, we made a payment of $0.3 million related to this tentative agreement. On May 23, 2008, the Company filed a petition with the Tax Court seeking a redetermination of the prepaid expense adjustment. On May 9, 2011 the United States Tax Court determined that the IRS did not err in denying the Company's request to change its accounting method with respect to prepaid expenses and held that the Company was not allowed a deduction for prepaid expenses on its 2002 tax return. As a result of this decision, the Company may be required to pay $0.9 million related to disallowed prepaid expense deductions and the corresponding carryback of those deductions to the 1999 and 2000 tax returns through a net operating loss carry back. As of the current date, the Company is evaluating whether to settle this issue or continue to pursue the matter through further court proceedings. As of July 2, 2011, the final resolution of this matter is uncertain. We believe that adequate amounts have been provided for as unrecognized tax benefits. There is the possibility of either a favorable or unfavorable effect on our results of operations in the period in which these matters are effectively settled. We will recognize any uncertain tax expense or benefit in the period settled. We are not currently under examination in any state, local or foreign jurisdictions. A 2008 Taiwan exam has been settled with no material adjustments. We believe that it is reasonably possible that $1.5 million of unrecognized tax benefits and $1.0 million of associated interest and penalties could significantly change during the next twelve months. The $2.5 million potential change would represent a decrease in unrecognized tax benefits, comprised of items related to matters currently being disputed by the IRS, certain federal and state credits and uncertain income tax positions related to foreign tax filings for years that will no longer be subject to examination under expiring statutes of limitations. We are paying foreign income taxes, which are reflected in the Provision for income taxes in the Condensed Consolidated Statements of Operations and are primarily related to the cost of operating an offshore research and development subsidiary and sales subsidiaries. We are not currently paying federal income taxes and do not expect to pay such taxes until the benefits of our tax net operating losses are fully utilized. We expect to pay a nominal amount of state income tax. We accrue interest and penalties related to uncertain tax positions in the Provision for income taxes.

Income Taxes:

We are subject to federal income tax as well as income tax of multiple state and foreign jurisdictions. We are no longer subject to federal, state and local, or foreign income tax examinations for years before 2001. We have federal net operating loss carryforwards that expire at various dates between 2023 and 2029. We have state net operating loss carryforwards that expire at various dates from 2011 through 2029. We also have federal and state credit carryforwards, some of which do not expire, with the remainder expiring at various dates from 2011 through 2031. We have provided a valuation allowance equal to our net federal and state deferred tax assets as we have not met the more-likely-than-not realization threshold for deferred tax asset recognition. We evaluate both positive and negative evidence to determine if some or all of our deferred tax assets should be recognized on a quarterly basis. In future periods, if we determine that we are more-likely-than-not to realize some or all of our deferred tax assets, we will recognize a deferred tax asset and a benefit in the period in which such determination is made. As of July 2, 2011, the net deferred tax asset relates to foreign jurisdictions where we have concluded it is more-likely-than-not that we will realize the net deferred tax assets in future periods.

The Internal Revenue Service (“IRS”) has examined our income tax returns for 2001 and 2002, and has issued proposed adjustments of $1.4 million, plus interest. These adjustments relate to the treatment of acquisition costs and a tax accounting method change for prepaid expenses. Although we do not agree with the proposed adjustment related to the prepaid expense matter, we believe that we have reached a tentative agreement concerning the acquisition costs. During the three months ended March 29, 2008, we made a payment of $0.3 million related to this tentative agreement. On May 23, 2008, the Company filed a petition with the Tax Court seeking a redetermination of the prepaid expense adjustment. On May 9, 2011 the United States Tax Court determined that the IRS did not err in denying the Company's request to change its accounting method with respect to prepaid expenses and held that the Company was not allowed a deduction for prepaid expenses on its 2002 tax return. As a result of this decision, the Company may be required to pay $0.9 million related to disallowed prepaid expense deductions and the corresponding carryback of those deductions to the 1999 and 2000 tax returns through a net operating loss carry back. As of the current date, the Company is evaluating whether to settle this issue or continue to pursue the matter through further court proceedings. As of July 2, 2011, the final resolution of this matter is uncertain. We believe that adequate amounts have been provided for as unrecognized tax benefits. There is the possibility of either a favorable or unfavorable effect on our results of operations in the period in which these matters are effectively settled. We will recognize any uncertain tax expense or benefit in the period settled.

We are not currently under examination in any state, local or foreign jurisdictions. A 2008 Taiwan exam has been settled with no material adjustments.

We believe that it is reasonably possible that $1.5 million of unrecognized tax benefits and $1.0 million of associated interest and penalties could significantly change during the next twelve months. The $2.5 million potential change would represent a decrease in unrecognized tax benefits, comprised of items related to matters currently being disputed by the IRS, certain federal and state credits and uncertain income tax positions related to foreign tax filings for years that will no longer be subject to examination under expiring statutes of limitations.

We are paying foreign income taxes, which are reflected in the Provision for income taxes in the Condensed Consolidated Statements of Operations and are primarily related to the cost of operating an offshore research and development subsidiary and sales subsidiaries. We are not currently paying federal income taxes and do not expect to pay such taxes until the benefits of our tax net operating losses are fully utilized. We expect to pay a nominal amount of state income tax. We accrue interest and penalties related to uncertain tax positions in the Provision for income taxes.