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Operating Lease Agreements - Summary of Rents of Operating Leases Payable (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure of operating lease by lessee [Line Items]      
Operating lease payable $ 62,948 $ 58,365 $ 66,135
Not later than 1 year [Member]      
Disclosure of operating lease by lessee [Line Items]      
Operating lease payable 15,067 18,550 18,306
Between 1 and 5 years [Member]      
Disclosure of operating lease by lessee [Line Items]      
Operating lease payable $ 47,881 $ 39,815 $ 47,829