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Franchise Rights Acquired, Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)			3 Months Ended		6 Months Ended		12 Months Ended
	May 06, 2019	May 05, 2019	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Dec. 28, 2019	Dec. 29, 2018
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill			$ 154,058,000		$ 154,058,000			$ 152,519,000
Finite-lived intangible assets, aggregate amortization expense			$ 7,485,000	$ 6,832,000	$ 15,041,000	$ 14,242,000
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			$ 4,623,000		$ 4,623,000
Goodwill
Goodwill And Intangible Assets Disclosure [Line Items]
Percentage of goodwill hold by reporting units			97.00%		97.00%
Minimum \| Goodwill
Goodwill And Intangible Assets Disclosure [Line Items]
Reporting unit, percentage of estimated fair value in excess of carrying amount			60.00%		60.00%
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					$ 4,754,000
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%