Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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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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The number of businesses acquired by the entity during the period.

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Represents the number of restaurants.

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Amount of restructuring charges, remediation cost, and asset impairment loss.

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Selected Quarterly Financial and Earnings Data (Unaudited) (Details) $ in Thousands			3 Months Ended								12 Months Ended
	Jun. 23, 2021 restaurant	Jun. 17, 2021 restaurant	Jan. 02, 2022 USD ($)	Oct. 03, 2021 USD ($)	Jul. 04, 2021 USD ($) restaurant	Apr. 04, 2021 USD ($)	Jan. 03, 2021 USD ($)	Sep. 27, 2020 USD ($)	Jun. 28, 2020 USD ($)	Mar. 29, 2020 USD ($)	Jan. 02, 2022 USD ($) restaurant	Jan. 03, 2021 USD ($)	Dec. 29, 2019 USD ($)
Quarterly Financial Information Disclosure [Abstract]
Restaurants Acquired \| restaurant	5	14			19						19
Acquisition-related costs				$ 100	$ 300
Impairment and other lease charges			$ 3,200	$ 800	$ 100	$ 400	$ 5,000	$ 2,000	$ 2,900	$ 2,900	$ 4,470	$ 12,778	$ 3,564
Number of Restaurants			1,091	1,092	1,092	1,075	1,074	1,088	1,092	1,093	1,091	1,074
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount			$ 7,100	$ 1,600	$ 2,600		$ 12,900				$ 11,272	$ 13,138	0
Impairment charges											3,900	8,200	1,700
Interim Period, Costs Not Allocable [Line Items]
Impairment charges											$ 3,900	$ 8,200	$ 1,700
First Right Of Refusal
Quarterly Financial Information Disclosure [Abstract]
Impairment charges							2,000
Interim Period, Costs Not Allocable [Line Items]
Impairment charges							$ 2,000