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Summary of Significant Accounting Policies - (Advertising Costs) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 28, 2022 | Dec. 29, 2021 | Dec. 30, 2020
Entity Operated Units [Member] |  |  |
Franchisor Disclosure [Line Items] |  |  |
Advertising expense | $ 5.3 | $ 4.6 | $ 3.9
Franchise |  |  |
Franchisor Disclosure [Line Items] |  |  |
Advertising expense | $ 75.9 | $ 70.0 | $ 53.7

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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