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Franchise Rights Acquired, Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)			3 Months Ended			9 Months Ended
	May 09, 2021	May 03, 2020	Oct. 02, 2021	Sep. 26, 2020	Mar. 28, 2020	Oct. 02, 2021	Sep. 26, 2020	Jan. 02, 2021
Goodwill And Intangible Assets Disclosure [Line Items]
Franchise right maturity period	7 years
Goodwill			$ 157,529,000			$ 157,529,000		$ 155,617,000
Goodwill impairment							$ 3,665,000
Finite-lived intangible assets, aggregate amortization expense			8,032,000	$ 7,557,000		24,066,000	$ 22,108,000
Franchise Rights
Goodwill And Intangible Assets Disclosure [Line Items]
Indefinite-lived intangible assets, impairment charges	$ 0	$ 0
United States
Goodwill And Intangible Assets Disclosure [Line Items]
Indefinite-lived franchise rights acquired			698,383,000			698,383,000
Goodwill			105,121,000			105,121,000
Canada
Goodwill And Intangible Assets Disclosure [Line Items]
Indefinite-lived franchise rights acquired			60,064,000			60,064,000
Goodwill			42,371,000			42,371,000
United Kingdom
Goodwill And Intangible Assets Disclosure [Line Items]
Indefinite-lived franchise rights acquired			12,204,000			12,204,000
Australia
Goodwill And Intangible Assets Disclosure [Line Items]
Indefinite-lived franchise rights acquired			6,528,000			6,528,000
New Zealand
Goodwill And Intangible Assets Disclosure [Line Items]
Indefinite-lived franchise rights acquired			4,911,000			4,911,000
New Zealand | Franchise Rights
Goodwill And Intangible Assets Disclosure [Line Items]
Indefinite-lived franchise rights acquired			$ 4,911,000			$ 4,911,000
Percentage of franchise rights acquired			0.60%			0.60%
Percentage of estimated fair value in excess of carrying amount			10.00%			10.00%
Other Countries
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill			$ 10,037,000			$ 10,037,000
All Units of Account Except New Zealand | Franchise Rights
Goodwill And Intangible Assets Disclosure [Line Items]
Percentage of franchise rights acquired			99.40%			99.40%
Brazil
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill impairment					$ 3,665,000
Minimum | Goodwill
Goodwill And Intangible Assets Disclosure [Line Items]
Percentage of estimated fair value in excess of carrying amount			100.00%			100.00%
Minimum | All Units of Account Except New Zealand | Franchise Rights
Goodwill And Intangible Assets Disclosure [Line Items]
Percentage of estimated fair value in excess of carrying amount			45.00%			45.00%
Franchise Rights | Maximum
Goodwill And Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life (in years)						1 year

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