XML 71 R58.htm IDEA: XBRL DOCUMENT v3.21.1
Trade receivables - Net (Schedule of Allowance for Doubtful Accounts) (Details) - MXN ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Trade and other receivables [abstract]    
Balance at beginning of year $ 237,098 $ 231,778
Provisions 0 4,529
Cancellation (415) (63)
Account recoveries (1,333)  
Translations effects (1,995) 854
Balance at end of year $ 233,355 $ 237,098