Income Taxes	6 Months Ended
Feb. 29, 2020
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes In accordance with ASC 740, Income Taxes (“ASC 740”), each interim period is considered integral to the annual period and tax expense is measured using an estimated annual effective tax rate. An entity is required to record income tax expense each quarter based on its annual effective tax rate estimated for the full fiscal year and use that rate to provide for income taxes on a current year-to-date basis, adjusted for discrete taxable events that occur during the interim period. Effective tax rate The Company’s effective tax rate for the thirteen weeks ended February 29, 2020 was 24.2% as compared to 24.9% for the corresponding period in the prior year. The Company’s effective tax rate for the twenty-six weeks ended February 29, 2020 was 23.0% as compared to 25.5% for the corresponding period in the prior year. The decrease in the effective tax rate in the twenty-six weeks ended February 29, 2020 was primarily due to a $1.3 million benefit resulting from the release of certain tax reserves. In addition, there was a $0.7 million and $1.4 million discrete tax benefit related to stock option exercises during the thirteen and twenty-six weeks ended February 29, 2020, respectively. Uncertain tax positions 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 February 29, 2020, there was no change in unrecognized tax benefits to the Company. During the twenty-six weeks ended February 29, 2020, there was a decrease in unrecognized tax benefits of $1.3 million due to a release of tax reserves. All U.S. and Canadian federal income tax statutes have lapsed for filings up to and including fiscal years 2015 and 2012, respectively. With a few exceptions, the Company is no longer subject to state and local income tax examinations for periods prior to fiscal 2015. 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.

Income Taxes

6 Months Ended

Feb. 29, 2020

13. Income Taxes

In accordance with ASC 740, Income Taxes (“ASC 740”), each interim period is considered integral to the annual period and tax expense is measured using an estimated annual effective tax rate. An entity is required to record income tax expense each quarter based on its annual effective tax rate estimated for the full fiscal year and use that rate to provide for income taxes on a current year-to-date basis, adjusted for discrete taxable events that occur during the interim period.

Effective tax rate

The Company’s effective tax rate for the thirteen weeks ended February 29, 2020 was 24.2% as compared to 24.9% for the corresponding period in the prior year. The Company’s effective tax rate for the twenty-six weeks ended February 29, 2020 was 23.0% as compared to 25.5% for the corresponding period in the prior year. The decrease in the effective tax rate in the twenty-six weeks ended February 29, 2020 was primarily due to a $1.3 million benefit resulting from the release of certain tax reserves. In addition, there was a $0.7 million and $1.4 million discrete tax benefit related to stock option exercises during the thirteen and twenty-six weeks ended February 29, 2020, respectively.

Uncertain tax positions

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 February 29, 2020, there was no change in unrecognized tax benefits to the Company. During the twenty-six weeks ended February 29, 2020, there was a decrease in unrecognized tax benefits of $1.3 million due to a release of tax reserves.

All U.S. and Canadian federal income tax statutes have lapsed for filings up to and including fiscal years 2015 and 2012, respectively. With a few exceptions, the Company is no longer subject to state and local income tax examinations for periods prior to fiscal 2015. 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.