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Share-based payments - MIP I (Details)
Dec. 27, 2012
USD ($)
$ / $
Dec. 27, 2012
MXN ($)
$ / $
Dec. 24, 2012
USD ($)
$ / $
$ / shares
Dec. 21, 2012
EquityInstruments
$ / shares
Apr. 18, 2023
MXN ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
MXN ($)
Dec. 31, 2022
$ / $
Dec. 31, 2022
₡ / $
Dec. 31, 2022
Q / $
Dec. 31, 2021
USD ($)
Dec. 31, 2021
$ / $
Dec. 31, 2021
₡ / $
Dec. 31, 2021
Q / $
Dec. 31, 2020
USD ($)
Dec. 31, 2020
$ / $
Dec. 31, 2020
₡ / $
Dec. 31, 2020
Q / $
Share-based payments                                    
Exchange rate         18.0638 4,810.20   19.36 594.9700 7.8515 3,981.16 20.58 645.900 7.7285 3,428.26 19.9487 615.7800 7.8095
MIP I                                    
Share-based payments                                    
Exercise price of shares     $ 5.31                              
Amount borrowed by trust $ 10,305,000 $ 133,723,000                                
Exchange rate | $ / $ 12.97 12.97 12.77                              
Maximum term of share options     10 years                              
Total cost of MIP determined     $ 213,000       $ 2,722,000                      
Series A and B shares | MIP I                                    
Share-based payments                                    
Number of instruments granted in share-based payment arrangement | EquityInstruments       25,164,126                            
Shares issued as a percentage of diluted capital stock       3.00%                            
Exercise price of shares       $ 5.31