Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)				3 Months Ended	12 Months Ended
	May 06, 2018	Nov. 29, 2017	May 07, 2017	Dec. 30, 2017	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Property, plant and equipment, impairment charges					$ 0	$ 27,000	$ 8,000
Goodwill impairment					$ 0	0	13,323,000
Percentage of goodwill hold by reporting units					97.20%
Netbook value					$ 749,884,000	747,348,000
Net book values of goodwill					$ 157,916,000	152,519,000
Franchise right maturity period					7 years
Total advertising expenses					$ 235,826,000	218,062,000	193,423,000
Write-off of deferred financing fees		$ 4,808,000					4,808,000
Discount on debt issuance		30,800,000			21,634,000	26,033,000
Gain (loss) on early debt extinguishment		$ (10,524,000)			0	0	(8,969,000)
Deferred financing costs, amortization expense					9,318,000	8,539,000	6,112,000
The cumulative balance of changes in fair value of derivative instruments, net of taxes				$ 5,392,000	15,529,000	1,175,000	5,392,000
The cumulative balance of the effects of foreign currency translations, net of taxes				5,075,000	$ 11,823,000	14,582,000	5,075,000
Prepayment Of Debt
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Write-off of deferred financing fees							618,000
Deferred financing costs							305,000
Gain (loss) on early debt extinguishment							1,554,000
Restructuring Costs
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Deferred financing costs				$ 53,832,000
Revolving Facility due April 2, 2018
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Deferred financing costs							5,716,000
Gain (loss) on early debt extinguishment							10,524,000
Franchise Rights
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Indefinite-lived intangible assets, impairment charges	$ 0		$ 0
Reporting units percentage of rights acquired					99.40%
BRAZIL
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Goodwill impairment							13,323,000
Reporting unit, percentage of estimated fair value in excess of carrying amount					3.00%
Goodwill					$ 4,399,000
Net book values of goodwill					$ 4,399,000	4,584,000
NEW ZEALAND
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Reporting units percentage of rights acquired					0.60%
Netbook value					$ 4,742,000	4,747,000
NEW ZEALAND | Franchise Rights
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Reporting unit, percentage of estimated fair value in excess of carrying amount					3.00%
Netbook value					$ 4,742,000
United States
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Netbook value					671,914,000	671,914,000
Net book values of goodwill					102,968,000	98,857,000
Canada
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Netbook value					55,171,000	52,919,000
Net book values of goodwill					40,972,000	39,300,000
Other Countries
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Net book values of goodwill					9,577,000	9,778,000
United Kingdom
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Netbook value					11,784,000	11,441,000
AUSTRALIA
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Netbook value					6,273,000	6,327,000
Capitalized software costs
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Property, plant and equipment, impairment charges					$ 307,000	$ 0	$ 674,000
Website development costs
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life (in years)					3 years
Minimum
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Equipment, estimated useful life (in years)					3 years
Finite-lived intangible assets, estimated useful life (in years)					3 years
Minimum | Goodwill
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Reporting unit, percentage of estimated fair value in excess of carrying amount					2.80%
Minimum | Franchise Rights
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Reporting unit, percentage of estimated fair value in excess of carrying amount					40.00%
Minimum | Capitalized software costs
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life (in years)					3 years
Maximum
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Equipment, estimated useful life (in years)					10 years
Finite-lived intangible assets, estimated useful life (in years)					20 years
Maximum | Franchise Rights
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life (in years)					1 year
Maximum | Capitalized software costs
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life (in years)					5 years