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Nature of Operations and Summary of Significant Accounting Policies (Summary of New Accounting Standard Impact) (Details) - USD ($) $ in Thousands | 3 Months Ended | 4 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 29, 2019 | Jul. 07, 2019 | Apr. 14, 2019 | Sep. 30, 2018 | Jul. 08, 2018 | Apr. 15, 2018 | Jan. 20, 2019 | Jan. 21, 2018 | Sep. 29, 2019 | Sep. 30, 2018 | Oct. 01, 2017 | Oct. 02, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 221,235 | $ 222,359 | $ 215,727 | $ 177,472 | $ 187,983 | $ 209,772 | $ 290,786 | $ 294,463 | $ 950,107 | $ 869,690 | $ 1,097,291 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 76,357 | 104,816 | 117,280 |
Total operating costs and expenses, net |  |  |  |  |  |  |  |  | 747,884 | 636,243 | 851,878 |
Earnings from operations | 48,515 | 48,261 | 47,123 | 35,647 | 76,340 | 46,820 | 58,324 | 72,807 | 202,223 | 233,447 | 245,413 |
Earnings from continuing operations and before income taxes |  |  |  |  |  |  |  |  | 115,772 |  |  |
Income tax expense |  |  |  |  |  |  |  |  | 24,025 | 81,728 | 75,332 |
Earnings from continuing operations |  |  |  |  |  |  |  |  | 91,747 | 104,339 | 128,573 |
Net earnings | 22,061 | $ 13,189 | $ 25,089 | 16,269 | $ 45,307 | $ 47,605 | $ 34,098 | $ 12,190 | 94,437 | 121,371 | 135,332 |
Prepaid expenses | 9,015 |  |  | 14,443 |  |  |  |  | 9,015 | 14,443 |  |
Total current assets | 227,128 |  |  | 94,973 |  |  |  |  | 227,128 | 94,973 |  |
Deferred tax assets | 85,564 |  |  | 62,140 |  |  |  |  | 85,564 | 62,140 |  |
Other assets, net | 206,685 |  |  | 199,266 |  |  |  |  | 206,685 | 199,266 |  |
Total other assets | 339,421 |  |  | 308,755 |  |  |  |  | 339,421 | 308,755 |  |
Total assets | 958,483 |  |  | 823,397 |  |  |  |  | 958,483 | 823,397 |  |
Accrued liabilities | 120,083 |  |  | 106,922 |  |  |  |  | 120,083 | 106,922 |  |
Total current liabilities | 157,923 |  |  | 183,720 |  |  |  |  | 157,923 | 183,720 |  |
Other long-term liabilities | 263,770 |  |  | 193,449 |  |  |  |  | 263,770 | 193,449 |  |
Total long-term liabilities | 1,538,144 |  |  | 1,231,376 |  |  |  |  | 1,538,144 | 1,231,376 |  |
Retained earnings | 1,577,034 |  |  | 1,561,353 |  |  |  |  | 1,577,034 | 1,561,353 |  |
Total stockholders’ deficit | (737,584) |  |  | (591,699) |  |  |  |  | (737,584) | (591,699) | (388,130) | $ (217,206)
Total liabilities and stockholders’ deficit | 958,483 |  |  | $ 823,397 |  |  |  |  | 958,483 | 823,397 |  |
Franchise royalties and other |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 169,811 | 162,585 | 149,792 |
Franchise contributions for advertising and other services |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 170,674 | 0 | 0 |
Franchise |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 272,815 | 259,047 | 231,578 |
Franchise advertising and other services expenses |  |  |  |  |  |  |  |  | 178,093 | $ 0 | $ 0 |
Calculated under Revenue Guidance in Effect before Topic 606 |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 775,688 |  |  |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 83,776 |  |  |
Total operating costs and expenses, net |  |  |  |  |  |  |  |  | 577,210 |  |  |
Earnings from operations |  |  |  |  |  |  |  |  | 198,478 |  |  |
Earnings from continuing operations and before income taxes |  |  |  |  |  |  |  |  | 112,027 |  |  |
Income tax expense |  |  |  |  |  |  |  |  | 23,053 |  |  |
Earnings from continuing operations |  |  |  |  |  |  |  |  | 88,974 |  |  |
Net earnings |  |  |  |  |  |  |  |  | 91,664 |  |  |
Prepaid expenses | 9,987 |  |  |  |  |  |  |  | 9,987 |  |  |
Total current assets | 228,100 |  |  |  |  |  |  |  | 228,100 |  |  |
Deferred tax assets | 72,606 |  |  |  |  |  |  |  | 72,606 |  |  |
Other assets, net | 206,954 |  |  |  |  |  |  |  | 206,954 |  |  |
Total other assets | 326,732 |  |  |  |  |  |  |  | 326,732 |  |  |
Total assets | 946,766 |  |  |  |  |  |  |  | 946,766 |  |  |
Accrued liabilities | 115,105 |  |  |  |  |  |  |  | 115,105 |  |  |
Total current liabilities | 152,945 |  |  |  |  |  |  |  | 152,945 |  |  |
Other long-term liabilities | 222,475 |  |  |  |  |  |  |  | 222,475 |  |  |
Total long-term liabilities | 1,496,849 |  |  |  |  |  |  |  | 1,496,849 |  |  |
Retained earnings | 1,611,590 |  |  |  |  |  |  |  | 1,611,590 |  |  |
Total stockholders’ deficit | (703,028) |  |  |  |  |  |  |  | (703,028) |  |  |
Total liabilities and stockholders’ deficit | 946,766 |  |  |  |  |  |  |  | 946,766 |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 | Franchise royalties and other |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 166,066 |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 | Franchise contributions for advertising and other services |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 | Franchise |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Franchise advertising and other services expenses |  |  |  |  |  |  |  |  | 0 |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 | Franchise Fees | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (3,745) |  |  |
Earnings from operations |  |  |  |  |  |  |  |  | (3,745) |  |  |
Earnings from continuing operations and before income taxes |  |  |  |  |  |  |  |  | (3,745) |  |  |
Income tax expense |  |  |  |  |  |  |  |  | (972) |  |  |
Earnings from continuing operations |  |  |  |  |  |  |  |  | (2,773) |  |  |
Net earnings |  |  |  |  |  |  |  |  | (2,773) |  |  |
Prepaid expenses | 972 |  |  |  |  |  |  |  | 972 |  |  |
Total current assets | 972 |  |  |  |  |  |  |  | 972 |  |  |
Deferred tax assets | (12,958) |  |  |  |  |  |  |  | (12,958) |  |  |
Other assets, net | 269 |  |  |  |  |  |  |  | 269 |  |  |
Total other assets | (12,689) |  |  |  |  |  |  |  | (12,689) |  |  |
Total assets | (11,717) |  |  |  |  |  |  |  | (11,717) |  |  |
Accrued liabilities | (4,978) |  |  |  |  |  |  |  | (4,978) |  |  |
Total current liabilities | (4,978) |  |  |  |  |  |  |  | (4,978) |  |  |
Other long-term liabilities | (41,295) |  |  |  |  |  |  |  | (41,295) |  |  |
Total long-term liabilities | (41,295) |  |  |  |  |  |  |  | (41,295) |  |  |
Retained earnings | 34,556 |  |  |  |  |  |  |  | 34,556 |  |  |
Total stockholders’ deficit | 34,556 |  |  |  |  |  |  |  | 34,556 |  |  |
Total liabilities and stockholders’ deficit | $ (11,717) |  |  |  |  |  |  |  | (11,717) |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 | Franchise Fees | Franchise royalties and other | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (3,745) |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 | Marketing and Sourcing Fees | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (161,873) |  |  |
Total operating costs and expenses, net |  |  |  |  |  |  |  |  | (161,873) |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 | Marketing and Sourcing Fees | Franchise contributions for advertising and other services | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (161,873) |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 | Marketing and Sourcing Fees | Franchise | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Franchise advertising and other services expenses |  |  |  |  |  |  |  |  | (161,873) |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 | Technology Support Fees | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (8,801) |  |  |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 7,419 |  |  |
Total operating costs and expenses, net |  |  |  |  |  |  |  |  | (8,801) |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 | Technology Support Fees | Franchise contributions for advertising and other services | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (8,801) |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 | Technology Support Fees | Franchise | Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Franchise advertising and other services expenses |  |  |  |  |  |  |  |  | $ (16,220) |  |  |

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