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Basis Of Presentation (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jul. 07, 2019 USD ($) restaurant | Jul. 08, 2018 USD ($) restaurant | Jul. 07, 2019 USD ($) segment restaurant | Jul. 08, 2018 USD ($) restaurant | Sep. 30, 2018 USD ($)
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of restaurants | restaurant | 2,242 | 2,241 | 2,242 | 2,241 |
Number of reporting segments | segment |  |  | 1 |  |
Contractual obligation |  |  | 5.00% |  |
Incremental Corporate Advertising Contributions |  |  | $ 2,000 | $ 3,300 |
Marketing and advertising expense | $ 4,000 | $ 5,900 | 15,000 | 22,000 |
Deferred tax assets | (72,903) |  | (72,903) |  | $ (62,140)
Pension Cost Reclassification | $ 342 | $ 423 | $ 1,141 | $ 1,410 |
Entity Operated Units |  |  |  |  |
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of restaurants | restaurant | 137 | 146 | 137 | 146 |
Franchised Units |  |  |  |  |
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of restaurants | restaurant | 2,105 | 2,095 | 2,105 | 2,095 |
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member] | Franchise Fees [Member] |  |  |  |  |
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption | $ 50,300 |  | $ 50,300 |  |
Contract with Customer, Liability, Current | 4,968 |  | 4,968 |  |
Contract liabilities noncurrent | 45,300 |  | 45,300 |  |
Deferred tax assets | $ 12,958 |  | $ 12,958 |  |

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