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Description of the business and summary of significant accounting policies - Employee benefits (Details)
$ / shares in Units, $ in Thousands, $ in Thousands
1 Months Ended 12 Months Ended
Nov. 06, 2014
Apr. 30, 2018
Dec. 31, 2022
USD ($)
Dec. 31, 2022
MXN ($)
$ / shares
Dec. 31, 2021
USD ($)
[1]
Dec. 31, 2021
MXN ($)
$ / shares
Dec. 31, 2020
USD ($)
[1]
Dec. 31, 2020
MXN ($)
$ / shares
Share-based payments                
Termination benefits provision       $ 0   $ 0    
Number of days' wages for each year of service provided as seniority premium benefits     12 days 12 days        
Minimum years of service to receive seniority premium benefits     15 years 15 years        
Salaries and benefits     $ 283,089   $ 239,215   $ 163,776  
Quarterly incentive bonuses                
Share-based payments                
Salaries and benefits       $ 2,992   $ 3,701   $ 1,266
SARs - cash settled                
Share-based payments                
Salaries and benefits               $ (95)
Vesting period 3 years              
MIP I                
Share-based payments                
Exercise price | $ / shares           $ 5.31    
MIP II                
Share-based payments                
Vesting period     5 years 5 years        
BODIP                
Share-based payments                
Vesting period   5 years 5 years 5 years        
Exercise price | $ / shares       $ 33.80   $ 32.23   $ 9.74
Employee profit sharing                
Share-based payments                
Salaries and benefits       $ 136   $ 12,951   $ 968
[1] The comparative Consolidated financial statements have been re-presented from Mexican peso to U.S. dollar to reflect the Company’s change in presentation currency.