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Events after the Reporting Period (Details) - MXN ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Events after the reporting period      
Tax benefit on decline in fair value   $ 33 $ (33)
Warrants issued by UHI      
Events after the reporting period      
Decline in fair value $ 21,937,100    
Tax benefit on decline in fair value $ 6,581,100