Income Taxes	3 Months Ended
Nov. 30, 2019
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 November 30, 2019 was 22.1% as compared to 26.2% for the corresponding period in the prior year. The effective tax rate in the thirteen weeks ended November 30, 2019 includes a $1.3 million benefit due to the relief of certain tax reserves as well as a $0.7 million discrete tax benefit related to stock option exercises during the period. 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 November 30, 2019, 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

3 Months Ended

Nov. 30, 2019

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 November 30, 2019 was 22.1% as compared to 26.2% for the corresponding period in the prior year. The effective tax rate in the thirteen weeks ended November 30, 2019 includes a $1.3 million benefit due to the relief of certain tax reserves as well as a $0.7 million discrete tax benefit related to stock option exercises during the period.

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 November 30, 2019, 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.