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Franchise Rights Acquired, Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands				3 Months Ended		6 Months Ended		12 Months Ended
	May 07, 2023	May 08, 2022	Aug. 10, 2018	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022	Dec. 31, 2022	Jan. 01, 2022
Goodwill And Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, aggregate amortization expense				$ 10,443	$ 8,761	$ 18,962	$ 16,935
Goodwill				246,208		246,208		$ 155,998	$ 157,374
Franchise right maturity period	7 years
Goodwill impairment	$ 0	$ 0						$ 3,124
Kurbo Health, Inc
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill			$ 1,101
Net purchase price			$ 3,063
Kurbo, Inc
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill impairment					$ 1,101
United States
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill				104,020		104,020
Canada
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill				40,463		40,463
Other Countries
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill				$ 12,535		$ 12,535
All Reporting Units Except for Republic of Ireland
Goodwill And Intangible Assets Disclosure [Line Items]
Percentage of goodwill held				99.00%		99.00%
All Reporting Units Except for Republic of Ireland | Goodwill | Minimum
Goodwill And Intangible Assets Disclosure [Line Items]
Percentage of estimated fair value in excess of carrying amount	120.00%
Republic of Ireland
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill				$ 2,381		$ 2,381
Percentage of estimated fair value in excess of carrying amount	55.00%
Percentage of goodwill held				1.00%		1.00%
Franchise Rights Acquired
Goodwill And Intangible Assets Disclosure [Line Items]
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]	Asset Impairment Charges
Indefinite-lived intangible assets, impairment charges	$ 0
Assumed cumulative annual revenue growth rate	2.80%
Franchise Rights Acquired | Maximum
Goodwill And Intangible Assets Disclosure [Line Items]
Finite-lived intangible assets, estimated useful life (in years)						1 year
Assumed Workshops + Digital revenue growth rate	(18.40%)
Assumed operating income margin rates	12.70%
Assumed Digital revenue growth rate	7.50%
Franchise Rights Acquired | Minimum
Goodwill And Intangible Assets Disclosure [Line Items]
Assumed Workshops + Digital revenue growth rate	(37.10%)
Assumed operating income margin rates	(6.40%)
Assumed Digital revenue growth rate	(14.80%)
Franchise Rights Acquired | Other Units of Account
Goodwill And Intangible Assets Disclosure [Line Items]
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]		Asset Impairment Charges
Indefinite-lived intangible assets, impairment charges		$ 0
Franchise Rights Acquired | United States
Goodwill And Intangible Assets Disclosure [Line Items]
Net book value of franchise rights acquired				$ 374,353		$ 374,353
Franchise Rights Acquired | Canada
Goodwill And Intangible Assets Disclosure [Line Items]
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]					Asset Impairment Charges
Indefinite-lived intangible assets, impairment charges					$ 24,485
Franchise Rights Acquired | United Kingdom
Goodwill And Intangible Assets Disclosure [Line Items]
Net book value of franchise rights acquired				2,799		2,799
Franchise Rights Acquired | Australia
Goodwill And Intangible Assets Disclosure [Line Items]
Net book value of franchise rights acquired				4,137		4,137
Franchise Rights Acquired | New Zealand
Goodwill And Intangible Assets Disclosure [Line Items]
Net book value of franchise rights acquired				$ 2,350		$ 2,350
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]					Asset Impairment Charges
Indefinite-lived intangible assets, impairment charges					$ 834
Percentage of estimated fair value in excess of carrying amount	20.00%
Percentage of franchise rights acquired				0.60%		0.60%
Franchise Rights Acquired | All Units of Account Except For New Zealand
Goodwill And Intangible Assets Disclosure [Line Items]
Percentage of franchise rights acquired				99.40%		99.40%
Franchise Rights Acquired | All Units of Account Except For New Zealand | Minimum
Goodwill And Intangible Assets Disclosure [Line Items]
Percentage of estimated fair value in excess of carrying amount	70.00%

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