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Summary of significant accounting policies - Narrative (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Nov. 30, 2021
USD ($)
restaurant
Summary Of Significant Accounting Policies [Line Items]        
Value added tax and other tax receivable $ 21,172 $ 16,608    
Payment term for accounts payable outsourcing (in days) 180 days      
Accounts payable for outsourcing $ 13,650 24,149    
Lease term for most restaurants 15 years      
Equity method investment, realized gain (loss) $ 1,492 1,131 $ 531  
Number of restaurants | restaurant       20
Equity method investments 18,111 14,708   $ 11,000
Equity method investment, gain (loss) on contribution of business 0 0 8,501  
Operadora de Franquicias Saile S.A.P.I. de C.V.        
Summary Of Significant Accounting Policies [Line Items]        
Shareholders ownership percentage       49.00%
Other investees        
Summary Of Significant Accounting Policies [Line Items]        
Shareholders ownership percentage       51.00%
Argentina        
Summary Of Significant Accounting Policies [Line Items]        
Non-monetary asset 157,400      
Venezuela        
Summary Of Significant Accounting Policies [Line Items]        
Non-monetary asset 17,200      
Company-operated restaurants        
Summary Of Significant Accounting Policies [Line Items]        
Advertising costs 175,043 148,776 104,010  
Franchised operations        
Summary Of Significant Accounting Policies [Line Items]        
Advertising costs $ 51,054 $ 44,088 $ 32,809  
Investors        
Summary Of Significant Accounting Policies [Line Items]        
Number of restaurants | restaurant       21
Internal used software        
Summary Of Significant Accounting Policies [Line Items]        
Finite-lived intangible asset, useful life 3 years      
Minimum | Equipment        
Summary Of Significant Accounting Policies [Line Items]        
Property and equipment, useful life 3 years      
Maximum | Building        
Summary Of Significant Accounting Policies [Line Items]        
Property and equipment, useful life 40 years      
Maximum | Equipment        
Summary Of Significant Accounting Policies [Line Items]        
Property and equipment, useful life 10 years