Income Taxes	3 Months Ended
Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	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. The Company’s effective tax rate for the three months ended December 31, 2016 was 25.5% compared to 25.9% for the corresponding period in the prior year. For the current three month period, the effective tax rate was lower than the statutory tax rate primarily due to the adoption of ASU 2016-09, which resulted in a tax benefit, earnings in jurisdictions subject to lower tax rates, and the domestic production activities deduction benefit. For the three months ended December 26, 2015, the effective tax rate was lower than the statutory tax rate primarily due to increased earnings in jurisdictions subject to lower tax rates, the domestic production activities deduction benefit, the retroactively reinstated Federal research credit, and a change in the valuation allowance related to the sale of a marketable security that had a gain for book purposes. The IRS completed its audit of the Company's consolidated Federal income tax returns for fiscal 2013 and 2014 subsequent to December 31, 2016.

Income Taxes

3 Months Ended

Dec. 31, 2016

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.

The Company’s effective tax rate for the three months ended December 31, 2016 was 25.5% compared to 25.9% for the corresponding period in the prior year. For the current three month period, the effective tax rate was lower than the statutory tax rate primarily due to the adoption of ASU 2016-09, which resulted in a tax benefit, earnings in jurisdictions subject to lower tax rates, and the domestic production activities deduction benefit. For the three months ended December 26, 2015, the effective tax rate was lower than the statutory tax rate primarily due to increased earnings in jurisdictions subject to lower tax rates, the domestic production activities deduction benefit, the retroactively reinstated Federal research credit, and a change in the valuation allowance related to the sale of a marketable security that had a gain for book purposes.

The IRS completed its audit of the Company's consolidated Federal income tax returns for fiscal 2013 and 2014 subsequent to December 31, 2016.