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Basis Of Presentation (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jul. 08, 2018 USD ($) segment restaurant | Jul. 09, 2017 USD ($) | Jul. 08, 2018 USD ($) restaurant | Jul. 09, 2017 USD ($) | Apr. 16, 2017 restaurant
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of restaurants | restaurant | 2,241 |  | 2,241 |  | 2,255
Number of reportable segments | segment | 1 |  |  |  |
Contractual obligation |  |  | 5.00% |  |
Incremental Corporate Advertising Contributions | $ 1,500 |  | $ 3,300 |  |
Marketing and advertising expense | 5,900 | $ 8,200 | 22,000 | $ 29,300 |
Excess Tax Benefit from Share-based Compensation, Operating Activities | 1,300 |  | 2,084 | 4,133 |
Net assets, adjusted balance | 200 |  | 200 |  |
Net periodic benefit cost excluding service cost | $ 22 | $ 500 | $ 71 | $ 1,600 |
Entity Operated Units |  |  |  |  |
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of restaurants | restaurant | 146 |  | 146 |  | 340
Franchised Units |  |  |  |  |
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of restaurants | restaurant | 2,095 |  | 2,095 |  | 1,915

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