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Balances and transactions with related parties: (Details Textual) $ in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended
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Sep. 20, 2017 USD ($) | Dec. 31, 2018 MXN ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 MXN ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 MXN ($) | Dec. 31, 2016 USD ($)
Services expense | $ 15,000 | $ 310,065 |  | $ 207,303 |  | $ 144,462 |
Key management personnel compensation |  |  | $ 53,268 |  |  |  | $ 16,350
Aerostar [member] |  |  |  |  |  |  |
Key management personnel compensation |  |  |  |  | $ 34,879 |  |
Inversiones y Tecnicas Aeroportuarias, S. A. de C. V. [member] |  |  |  |  |  |  |
Explanation of nature and extent of renewal and termination options |  | The agreement is for an initial term of 15 years and renews automatically for subsequent five year periods, unless one of the parts issues the other a cancellation notice within a determined term prior to the programmed expiration date. The Company can only exercise its termination right through a resolution of the shareholders. | The agreement is for an initial term of 15 years and renews automatically for subsequent five year periods, unless one of the parts issues the other a cancellation notice within a determined term prior to the programmed expiration date. The Company can only exercise its termination right through a resolution of the shareholders. |  |  |  |
Explanation of significant terms of service concession arrangement that may affect amount, timing and certainty of future cash flows |  | In accordance with the contract, the Company agreed to pay an annual compensation equivalent to the higher of a fixed amount or 5% of the consolidated income of the Company before deducting the compensation for technical assistance and before the comprehensive financial result, IT, depreciation and amortization, determined in accordance with financial reporting standards applicable in Mexico. Beginning in 2003, the minimum fixed amount is of USD2 million (Ps.29.4 million pesos). | In accordance with the contract, the Company agreed to pay an annual compensation equivalent to the higher of a fixed amount or 5% of the consolidated income of the Company before deducting the compensation for technical assistance and before the comprehensive financial result, IT, depreciation and amortization, determined in accordance with financial reporting standards applicable in Mexico. Beginning in 2003, the minimum fixed amount is of USD2 million (Ps.29.4 million pesos). |  |  |  |
Explanation of nature and extent of obligations to provide or rights to expect provision of services |  | The minimum fixed amount will increase annually by the inflation rate of the United States plus the added value tax over the amount of the payment. The Company entered into an amendment agreement for technical assistance and transfer of knowledge, which establishes that the compensation will be paid on a quarterly basis beginning in January 1, 2008, and that such payments are to be deducted from the annual compensation. | The minimum fixed amount will increase annually by the inflation rate of the United States plus the added value tax over the amount of the payment. The Company entered into an amendment agreement for technical assistance and transfer of knowledge, which establishes that the compensation will be paid on a quarterly basis beginning in January 1, 2008, and that such payments are to be deducted from the annual compensation. |  |  |  |
Services expense |  | $ 386,249 |  | $ 344,487 |  | $ 288,111 |
Airplan [Member] |  |  |  |  |  |  |
Key management personnel compensation |  |  |  |  | $ 3,268 |  |

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- Definition The explanation of the nature and extent (for example, quantity, time period or amount as appropriate) of obligations to provide, or rights to expect provision of, services in service concession arrangements. [Refer: Service concession arrangements [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name SIC -Number 29 -IssueDate 2018-01-01 -Paragraph 6 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=SIC&num=29&date=2018-03-01&anchor=para_6_c_ii&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The explanation of the nature and extent (for example, quantity, time period or amount as appropriate) of renewal and termination options in service concession arrangements. [Refer: Service concession arrangements [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name SIC -Number 29 -IssueDate 2018-01-01 -Paragraph 6 -Subparagraph c -Clause v -URI http://eifrs.ifrs.org/eifrs/XBRL?type=SIC&num=29&date=2018-03-01&anchor=para_6_c_v&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The explanation of significant terms of service concession arrangements that may affect the amount, timing and certainty of future cash flows (for example, the period of the concession, re-pricing dates and the basis upon which re-pricing or re-negotiation is determined). [Refer: Service concession arrangements [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name SIC -Number 29 -IssueDate 2018-01-01 -Paragraph 6 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=SIC&num=29&date=2018-03-01&anchor=para_6_b&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of expense arising from services. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_85&doctype=Standard -URIDate 2018-03-16 + Details
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