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Other Expense (Income) (Notes)	3 Months Ended
Other Expense (Income) (Notes)	Mar. 29, 2020
Other Income and Expenses [Abstract]
Other Expense (Income)	Other Expense (Income) In the three months ended March 31, 2019, the Company recorded other income of $1.9 million related to a settlement with BKC for their approval of new restaurant development by other franchisees which unfavorably impacted the Company's restaurants, a gain on a sale-leaseback transaction of $0.1 million, and a gain related to an insurance recovery from a fire at one of its restaurants in the prior year of $0.1 million.