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Balances and transactions with related parties: Compensation of key personnel (Details) - Key Management - MXN ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Related parties:      
Short-term salaries and other benefits paid to key personnel (Note 18.17) $ 109,747 $ 119,202 $ 84,642
Directors' remuneration expense $ 9,146 $ 8,695 $ 4,974