Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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Franchise Rights Acquired, Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)			3 Months Ended	12 Months Ended
	May 03, 2020	May 05, 2019	Mar. 28, 2020	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill impairment				$ 3,665,000	$ 0	$ 0
Finite-lived intangible assets, aggregate amortization expense				$ 29,828,000	$ 29,330,000	$ 28,995,000
Franchise Rights \| South Carolina Acquisition
Goodwill And Intangible Assets Disclosure [Line Items]
Amortization period				18 years
Franchise Rights
Goodwill And Intangible Assets Disclosure [Line Items]
Indefinite-lived intangible assets, impairment charges	$ 0	$ 0
Brazil
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill impairment			$ 3,665,000	$ 3,665,000