Income Taxes	9 Months Ended
May 26, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We account for income taxes under ASC 740, Income Taxes. The objectives of accounting for income taxes are to recognize the amount of taxes payable or refundable for the current year and deferred tax liabilities and assets for the future tax consequences of events that have been recognized in our financial statements or tax returns. Our effective tax rate decreased from 33.9% for the nine months ended May 27, 2017 to 28.2% for the nine months ended May 26, 2018 due primarily to the enactment of the Tax Act on December 22, 2017. One of the most significant provisions of this legislation was a reduction in the Federal corporate income tax rate from 35% to 21% effective beginning January 1, 2018. With our fiscal year ending on August 25, 2018, our blended Federal statutory tax rate for Fiscal 2018 is expected to be approximately 26%. Most of the remaining significant provisions of the Tax Act take effect in our Fiscal 2019. In December 2017, the SEC issued SAB 118, which has since been codified by the release of ASU 2018-05, Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118, to provide guidance for companies that allows for a measurement period of up to one year after the enactment date of the Tax Act to finalize the recording of the related tax impacts under ASC 740. In accordance with this guidance, a company must reflect the income tax effect of those aspects of the Tax Act for which the accounting under ASC 740 is complete. To the extent that a company's accounting for certain income tax effects of the Tax Act is incomplete, but it is able to determine a reasonable estimate, the company must record a provisional estimate in the financial statements. In accordance with ASC 740, as of the date of enactment, and during the three months ended February 24, 2018, we recorded a non-cash provisional estimate of $1.4 million to income tax expense and a corresponding reduction in the net deferred tax asset as a result of revaluing all deferred tax assets and liabilities at the newly enacted Federal corporate income tax rate. For the three months ended May 26, 2018, we recorded an additional non-cash provisional estimate of $0.2 million to income tax expense and a corresponding reduction in the net deferred tax asset based on revisions to the provisional estimate. We are still analyzing certain aspects of the Tax Act and refining our calculations, which could potentially affect the measurement of our deferred tax balances and cause us to revise our estimate in future periods. These impacts may be material, due to, among other things, further refinement of our calculations, changes in interpretations of the Tax Act, or issuance of additional guidance by the relevant tax authorities. We file a US Federal tax return, as well as returns in various international and state jurisdictions. Although certain years are no longer subject to examination by the IRS and various state taxing authorities, net operating loss carryforwards generated in those years may still be adjusted upon examination by the IRS or state taxing authorities. As of May 26, 2018, our Federal returns from Fiscal 2014 to present continue to be subject to review by the IRS. With few exceptions, the state returns from Fiscal 2013 to present continue to be subject to review by the state taxing jurisdictions. As of May 26, 2018, our unrecognized tax benefits were $1.7 million, including accrued interest and penalties of $0.5 million. If we were to prevail on all unrecognized tax benefits recorded, $1.5 million of the $1.7 million would benefit the overall effective tax rate. It is our policy to recognize interest and penalties accrued relative to unrecognized tax benefits as tax expense. We do not believe that there will be a significant change in the total amount of unrecognized tax benefits within the next twelve months.

Income Taxes

We account for income taxes under ASC 740, Income Taxes. The objectives of accounting for income taxes are to recognize the amount of taxes payable or refundable for the current year and deferred tax liabilities and assets for the future tax consequences of events that have been recognized in our financial statements or tax returns.

Our effective tax rate decreased from 33.9% for the nine months ended May 27, 2017 to 28.2% for the nine months ended May 26, 2018 due primarily to the enactment of the Tax Act on December 22, 2017. One of the most significant provisions of this legislation was a reduction in the Federal corporate income tax rate from 35% to 21% effective beginning January 1, 2018. With our fiscal year ending on August 25, 2018, our blended Federal statutory tax rate for Fiscal 2018 is expected to be approximately 26%. Most of the remaining significant provisions of the Tax Act take effect in our Fiscal 2019.

In December 2017, the SEC issued SAB 118, which has since been codified by the release of ASU 2018-05, Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118, to provide guidance for companies that allows for a measurement period of up to one year after the enactment date of the Tax Act to finalize the recording of the related tax impacts under ASC 740. In accordance with this guidance, a company must reflect the income tax effect of those aspects of the Tax Act for which the accounting under ASC 740 is complete. To the extent that a company's accounting for certain income tax effects of the Tax Act is incomplete, but it is able to determine a reasonable estimate, the company must record a provisional estimate in the financial statements.

In accordance with ASC 740, as of the date of enactment, and during the three months ended February 24, 2018, we recorded a non-cash provisional estimate of $1.4 million to income tax expense and a corresponding reduction in the net deferred tax asset as a result of revaluing all deferred tax assets and liabilities at the newly enacted Federal corporate income tax rate. For the three months ended May 26, 2018, we recorded an additional non-cash provisional estimate of $0.2 million to income tax expense and a corresponding reduction in the net deferred tax asset based on revisions to the provisional estimate.

We are still analyzing certain aspects of the Tax Act and refining our calculations, which could potentially affect the measurement of our deferred tax balances and cause us to revise our estimate in future periods. These impacts may be material, due to, among other things, further refinement of our calculations, changes in interpretations of the Tax Act, or issuance of additional guidance by the relevant tax authorities.

We file a US Federal tax return, as well as returns in various international and state jurisdictions. Although certain years are no longer subject to examination by the IRS and various state taxing authorities, net operating loss carryforwards generated in those years may still be adjusted upon examination by the IRS or state taxing authorities. As of May 26, 2018, our Federal returns from Fiscal 2014 to present continue to be subject to review by the IRS. With few exceptions, the state returns from Fiscal 2013 to present continue to be subject to review by the state taxing jurisdictions.

As of May 26, 2018, our unrecognized tax benefits were $1.7 million, including accrued interest and penalties of $0.5 million. If we were to prevail on all unrecognized tax benefits recorded, $1.5 million of the $1.7 million would benefit the overall effective tax rate. It is our policy to recognize interest and penalties accrued relative to unrecognized tax benefits as tax expense. We do not believe that there will be a significant change in the total amount of unrecognized tax benefits within the next twelve months.