Income Taxes	9 Months Ended
Jul. 02, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the quarter and nine months ended July 2, 2017, we recorded an income tax benefit of $2.3 million and an income tax provision of $8.5 million, respectively. For the quarter and nine months ended July 3, 2016, we recorded income tax provisions of $9.4 million and $11.8 million, respectively. The difference in our effective tax rate from the U.S. statutory rate of 35% primarily reflects the impact of the mix of domestic and international pre-tax income, valuation allowance and credits. During the quarter and nine months ended July 2, 2017, our income tax benefit and provision included the effects of a decrease in expense due to a change in the expected realizability of certain deferred tax liabilities and changes in effective tax rates in certain foreign jurisdictions. Our income tax benefit and provisions for the quarters and nine months ended July 2, 2017 and July 3, 2016, as applicable, were the combined calculated tax expenses, benefits and credits for various jurisdictions. Each quarter, we reassess the realizability of our deferred tax assets to determine the appropriateness of the valuation allowance. As of July 2, 2017, we believe that the deferred tax assets, net of valuation allowance, are appropriate. We file U.S. federal, state, and foreign income tax returns in jurisdictions with varying statutes of limitations. Fiscal years 2007 through 2016 generally remain subject to examination by federal and most state tax authorities and in significant foreign jurisdictions. Each quarter, we reassess our uncertain tax positions for additional unrecognized tax benefits, interest and penalties, and deletions due to statute expirations. Based on federal, state and foreign statute expirations in various jurisdictions, we anticipate a potential decrease in unrecognized tax benefits of approximately $17.9 million within the next twelve months. In December 2015, the U.S. government permanently reinstated the federal research and development tax credit retroactively to January 1, 2015. We are currently in a loss position for U.S. income tax purposes with a full valuation allowance; therefore, no benefit has been recognized for the quarter and nine months ended July 2, 2017. We establish liabilities for possible assessments by tax authorities resulting from known tax exposures including, but not limited to, international tax issues and certain tax credits. The Internal Revenue Service is currently examining our income tax returns for tax years 2007 through 2014 and the Canada Revenue Agency is currently examining income tax returns assumed from the PMC-Sierra, Inc. acquisition for tax years 2007 through 2014. Both examinations primarily relate to transfer pricing matters. Management believes that our position is appropriate and that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in our tax audits are resolved in a manner not consistent with management's expectations, we would be required to adjust our provision for income tax in the period such resolution occurs. While we believe our reported results are appropriate, any significant adjustments could have a material adverse effect on our results of operations, cash flows and financial position if not resolved within management expectations.

Income Taxes

For the quarter and nine months ended July 2, 2017, we recorded an income tax benefit of $2.3 million and an income tax provision of $8.5 million, respectively. For the quarter and nine months ended July 3, 2016, we recorded income tax provisions of $9.4 million and $11.8 million, respectively. The difference in our effective tax rate from the U.S. statutory rate of 35% primarily reflects the impact of the mix of domestic and international pre-tax income, valuation allowance and credits. During the quarter and nine months ended July 2, 2017, our income tax benefit and provision included the effects of a decrease in expense due to a change in the expected realizability of certain deferred tax liabilities and changes in effective tax rates in certain foreign jurisdictions. Our income tax benefit and provisions for the quarters and nine months ended July 2, 2017 and July 3, 2016, as applicable, were the combined calculated tax expenses, benefits and credits for various jurisdictions. Each quarter, we reassess the realizability of our deferred tax assets to determine the appropriateness of the valuation allowance. As of July 2, 2017, we believe that the deferred tax assets, net of valuation allowance, are appropriate.

We file U.S. federal, state, and foreign income tax returns in jurisdictions with varying statutes of limitations. Fiscal years 2007 through 2016 generally remain subject to examination by federal and most state tax authorities and in significant foreign jurisdictions. Each quarter, we reassess our uncertain tax positions for additional unrecognized tax benefits, interest and penalties, and deletions due to statute expirations. Based on federal, state and foreign statute expirations in various jurisdictions, we anticipate a potential decrease in unrecognized tax benefits of approximately $17.9 million within the next twelve months.

In December 2015, the U.S. government permanently reinstated the federal research and development tax credit retroactively to January 1, 2015. We are currently in a loss position for U.S. income tax purposes with a full valuation allowance; therefore, no benefit has been recognized for the quarter and nine months ended July 2, 2017.

We establish liabilities for possible assessments by tax authorities resulting from known tax exposures including, but not limited to, international tax issues and certain tax credits. The Internal Revenue Service is currently examining our income tax returns for tax years 2007 through 2014 and the Canada Revenue Agency is currently examining income tax returns assumed from the PMC-Sierra, Inc. acquisition for tax years 2007 through 2014. Both examinations primarily relate to transfer pricing matters. Management believes that our position is appropriate and that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in our tax audits are resolved in a manner not consistent with management's expectations, we would be required to adjust our provision for income tax in the period such resolution occurs. While we believe our reported results are appropriate, any significant adjustments could have a material adverse effect on our results of operations, cash flows and financial position if not resolved within management expectations.