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Franchise Rights Acquired, Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
May 05, 2019 | May 06, 2018 | Sep. 28, 2019 | Sep. 29, 2018 | Sep. 28, 2019 | Sep. 29, 2018 | Dec. 28, 2019 | Dec. 29, 2018
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  | $ 152,806,000 |  | $ 152,806,000 |  |  | $ 152,519,000
Finite-lived intangible assets, aggregate amortization expense |  |  | $ 6,973,000 | $ 7,213,000 | $ 22,014,000 | $ 21,453,000 |  |
Scenario, Forecast |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Franchise right maturity period |  |  |  |  |  |  | 7 years |
Brazil |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Reporting unit, percentage of estimated fair value in excess of carrying amount |  |  | 3.00% |  | 3.00% |  |  |
Goodwill |  |  | $ 4,278,000 |  | $ 4,278,000 |  |  |
NEW ZEALAND |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Reporting units percentage of rights acquired |  |  | 0.60% |  | 0.60% |  |  |
Netbook value |  |  |  |  | $ 4,455,000 |  |  |
United States |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  | $ 98,857,000 |  | 98,857,000 |  |  |
Netbook value |  |  |  |  | 671,914,000 |  |  |
Canada |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  | 40,442,000 |  | 40,442,000 |  |  |
Netbook value |  |  |  |  | 54,456,000 |  |  |
Other Countries |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  | $ 9,229,000 |  | 9,229,000 |  |  |
United Kingdom |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Netbook value |  |  |  |  | 11,072,000 |  |  |
Australia |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Netbook value |  |  |  |  | $ 6,081,000 |  |  |
Goodwill |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Percentage of goodwill hold by reporting units |  |  | 97.20% |  | 97.20% |  |  |
Minimum | Goodwill |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Reporting unit, percentage of estimated fair value in excess of carrying amount |  |  | 2.80% |  | 2.80% |  |  |
Maximum |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Finite-lived intangible assets, estimated useful life (in years) |  |  |  |  | 1 year |  |  |
Franchise Rights |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Indefinite-lived intangible assets, impairment charges | $ 0 | $ 0 |  |  |  |  |  |
Reporting units percentage of rights acquired |  |  | 99.40% |  | 99.40% |  |  |
Franchise Rights | NEW ZEALAND |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Reporting unit, percentage of estimated fair value in excess of carrying amount |  |  | 3.00% |  | 3.00% |  |  |
Netbook value |  |  |  |  | $ 4,455,000 |  |  |
Franchise Rights | Minimum |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |
Reporting unit, percentage of estimated fair value in excess of carrying amount |  |  | 40.00% |  | 40.00% |  |  |

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