Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)			3 Months Ended	12 Months Ended
	May 03, 2020	May 05, 2019	Mar. 28, 2020	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Property, plant and equipment, impairment charges				$ 1,310,000	$ 0	$ 27,000
Net book value				$ 762,500,000	749,884,000
Franchise right maturity period				7 years
Net book values of goodwill				$ 155,617,000	157,916,000
Goodwill impairment				3,665,000	0	0
Total advertising expenses				248,473,000	235,826,000	218,062,000
Deferred financing costs, amortization expense				8,845,000	9,318,000	8,539,000
The cumulative balance of changes in fair value of derivative instruments, net of taxes				20,979,000	15,529,000	1,175,000
The cumulative balance of the effects of foreign currency translations, net of taxes				$ 4,170,000	11,823,000	14,582,000
Goodwill
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Reporting unit, percentage of estimated fair value in excess of carrying amount				100.00%
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				91.90%
United States
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Net book value				$ 681,497,000	671,914,000
Net book values of goodwill				102,968,000	102,968,000
Canada
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Net book value				56,694,000	55,171,000
Net book values of goodwill				$ 42,103,000	40,972,000
Canada | Franchise Rights
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Reporting units percentage of rights acquired				7.40%
Reporting unit, percentage of estimated fair value in excess of carrying amount				16.50%
United Kingdom
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Net book value				$ 12,318,000	11,784,000
Australia
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Net book value				6,907,000	6,273,000
New Zealand
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Net book value				5,084,000	4,742,000
New Zealand | Franchise Rights
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Net book value				$ 5,084,000
Reporting units percentage of rights acquired				0.70%
Reporting unit, percentage of estimated fair value in excess of carrying amount				9.80%
Brazil
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Net book values of goodwill					4,399,000
Goodwill impairment			$ 3,665,000	$ 3,665,000
Other Countries
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Net book values of goodwill				10,546,000	9,577,000
Capitalized software costs
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Property, plant and equipment, impairment charges				$ 62,000	$ 307,000	$ 0
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 | Franchise Rights
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Reporting unit, percentage of estimated fair value in excess of carrying amount				35.00%
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