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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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