Income Taxes	3 Months Ended
Nov. 25, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s effective income tax rate was 35.5% and 38.8% for the thirteen weeks ended November 25, 2017 and the thirteen weeks ended November 26, 2016 respectively. The rate for the thirteen weeks ended November 25, 2017 includes $1.6 million of discrete tax benefits related to the adoption of new accounting guidance during the first quarter of fiscal 2018 discussed in Note 2 that requires tax effects of exercised or vested awards to be treated as discrete items in the reporting period in which they occur. Prior to fiscal 2018, these excess tax benefits were recorded as increases to capital surplus in shareholders' equity. The Company recognizes interest and penalties related to uncertain tax positions as a component of income tax expense which is consistent with the recognition of these items in prior reporting periods. During the thirteen weeks ended November 25, 2017, there were no material changes in the amount of unrecognized tax benefits or the amount accrued for interest and penalties. All U.S. and Canadian federal income tax statutes have lapsed for filings up to and including fiscal years 2012 and 2009, respectively, and the Company has concluded an audit of U.S. federal income taxes for 2010 and 2011. With a few exceptions, the Company is no longer subject to state and local income tax examinations for periods prior to fiscal 2013. The Company is not aware of any tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will change significantly in the next 12 months. On December 22, 2017, H.R.1, an Act to provide for reconciliation pursuant to titles II and V of the concurrent resolution on the budget for fiscal year 2018, also known as the Tax Cuts and Jobs Act, (the “Act”) was enacted, which, among other provisions, reduces the U.S. federal corporate income tax rate effective January 1, 2018 from its current 35% rate to a new 21% corporate rate and impose a one-time transition tax on assets held outside of the United States. The Company has not yet completed its evaluation of the impact of the changes in the tax bill but expects the net impact of these changes will be favorable to its financial results in future fiscal quarters.

Income Taxes

The Company’s effective income tax rate was 35.5% and 38.8% for the thirteen weeks ended November 25, 2017 and the thirteen weeks ended November 26, 2016 respectively. The rate for the thirteen weeks ended November 25, 2017 includes $1.6 million of discrete tax benefits related to the adoption of new accounting guidance during the first quarter of fiscal 2018 discussed in Note 2 that requires tax effects of exercised or vested awards to be treated as discrete items in the reporting period in which they occur. Prior to fiscal 2018, these excess tax benefits were recorded as increases to capital surplus in shareholders' equity.

The Company recognizes interest and penalties related to uncertain tax positions as a component of income tax expense which is consistent with the recognition of these items in prior reporting periods. During the thirteen weeks ended November 25, 2017, there were no material changes in the amount of unrecognized tax benefits or the amount accrued for interest and penalties.

All U.S. and Canadian federal income tax statutes have lapsed for filings up to and including fiscal years 2012 and 2009, respectively, and the Company has concluded an audit of U.S. federal income taxes for 2010 and 2011. With a few exceptions, the Company is no longer subject to state and local income tax examinations for periods prior to fiscal 2013. The Company is not aware of any tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will change significantly in the next 12 months.

On December 22, 2017, H.R.1, an Act to provide for reconciliation pursuant to titles II and V of the concurrent resolution on the budget for fiscal year 2018, also known as the Tax Cuts and Jobs Act, (the “Act”) was enacted, which, among other provisions, reduces the U.S. federal corporate income tax rate effective January 1, 2018 from its current 35% rate to a new 21% corporate rate and impose a one-time transition tax on assets held outside of the United States. The Company has not yet completed its evaluation of the impact of the changes in the tax bill but expects the net impact of these changes will be favorable to its financial results in future fiscal quarters.