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Financial Risk Management - Summary of Financial Instruments Held by the Company (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2018
MXN ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
MXN ($)
Dec. 31, 2016
MXN ($)
Financial assets        
Financial assets   $ 197,215    
Financial liabilities at amortized cost        
Financial liabilities $ 730,361   $ 784,533 $ 693,099
Long-term debt securities [Member]        
Financial liabilities at amortized cost        
Financial liabilities 9,000,000   9,000,000 5,200,000
Current And Long Term Bank Loans [Member]        
Financial liabilities at amortized cost        
Financial liabilities 4,535,863   4,252,258 4,614,276
Accounts payable [Member]        
Financial liabilities at amortized cost        
Financial liabilities 1,028,737 30,274 1,037,155 891,611
Cash and cash equivalents [Member]        
Financial assets        
Financial assets 6,151,457 186,252 7,730,143 5,188,138
Trade receivables [Member]        
Financial assets        
Financial assets 1,395,362 $ 10,963 997,370 607,544
Derivative financial instruments [Member]        
Financial assets        
Financial assets $ 136,457   $ 106,815 $ 72,454