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Accounts receivable - Net: (Details Textual) - MXN ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Current trade receivables related to airport use fees $ 600,518 $ 525,379
Trade receivables [member] | Financial assets past due but not impaired [member]    
Current trade receivables $ 275,490 $ 192,805