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Description of Business and Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 29, 2019 state province restaurant segment
Franchisor Disclosure [Line Items]
Number of operating segments | segment	1
Number of reportable segments | segment	1
Company-owned operated restaurants
Franchisor Disclosure [Line Items]
Number of restaurants | restaurant	454
Number of states in which restaurants are located | state	38
Franchised restaurants
Franchisor Disclosure [Line Items]
Number of restaurants | restaurant	102
Number of states in which restaurants are located | state	16
Number of Canadian provinces in which restaurants are located | province	1

X

- Definition

The number of provinces the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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X

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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- Definition

Represents the number of restaurants.

+ References

No definition available.

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Namespace Prefix:	us-gaap_
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X

- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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