Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Financial Instruments (Details Textual)

Financial Instruments (Details Textual) - MXN ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Financial Instruments [Abstract]    
Effective interest method $ 679,188  
Exchange rate sensitivity analysis, description The Group is mainly exposed to variations in the Mexican Peso / the U.S. Dollar exchange rate. For sensitivity analysis purposes, the Group has determined a 10 percent increase and decrease in Ps. currency units against the U.S. dollar ("relevant currency"). 10 percent is the sensitivity rate used when reporting foreign currency risk internally to key management personnel and represents management's assessment of the reasonably possible change in foreign exchange rates. The sensitivity analysis includes only outstanding foreign currency denominated financial assets/liabilities and adjusts their translation at the year-end for a 10 percent change in foreign currency rates. A positive number below indicates an increase in profit where currency units strengthen 10 percent against the relevant currency. For a 10 percent weakening of currency units against the relevant currency, there would be a comparable impact on the profit, and the balances below would be negative.  
Changes in interest rate sensitivity analysis $ 1,352  
Credit risk management, percent 10.00%  
Amount not used $ 260,500 $ 350,000