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Commitments and contingencies: (Details Textual) $ in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
May 21, 2015 MXN ($) | May 21, 2015 USD ($) | Dec. 31, 2017 MXN ($) | Dec. 31, 2016 MXN ($) | Dec. 31, 2015 MXN ($)
Contingent rents recognised as expense | $ 444,000 | $ 21,547 |  |  |
Lease and sublease payments recognised as expense |  |  | $ 5,019 | $ 4,825 | $ 4,084
Explanation of contractual obligations to purchase, construct or develop investment property or for repairs, maintenance or enhancements |  |  | Pursuant to the terms for the purchase of the land in Huatulco that occurred in October 2008, the Company has the obligation to build 450 hotel rooms, for which purpose the Company will enter into agreements with third parties to develop the comprehensive tourism plan without a specific due date. |  |
Aeropuerto de Cancun, S. A. de C. V. [member] |  |  |  |  |
Description of nature of obligation, contingent liabilities in business combination |  |  | At the time that the Company was carrying out the competitive bidding process for the sale of shares of the Airport Groups, the SCT established and communicated that concessionaires could amortize for tax purposes the value of the concession up to 15% a year. In February 2012, the SCT estimated an amount due payable by Cancún in the amount of Ps.865 million pesos against the ruling in question, because it considered that the determination of the 15% amortization was not valid in 2006 and 2007. |  |
Aeropuerto de Cancun, S. A. de C. V. [member] | Legal proceedings contingent liability [member] |  |  |  |  |
Legal proceedings provision |  |  | $ 116 |  |
Aeropuerto de Cancun, S. A. de C. V. [member] | Contingent liability arising from post-employment benefit obligations [member] |  |  |  |  |
Legal proceedings provision |  |  | $ 20 |  |

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- Definition The portion of lease payments recognised as an expense that is not fixed in amount but is based on the future amount of a factor that changes other than with the passage of time (for example, percentage of future sales, amount of future use, future price indices, future market rates of interest). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2019-01-01 -Name IAS -Number 17 -IssueDate 2017-01-01 -Paragraph 35 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2017-03-02&anchor=para_35_c&doctype=Standard&book=B -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2019-01-01 -Name IAS -Number 17 -IssueDate 2017-01-01 -Paragraph 31 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2017-03-02&anchor=para_31_c&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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- Definition The description of the nature of the obligation for contingent liabilities recognised in a business combination. [Refer: Contingent liabilities [member]; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2017-01-01 -Paragraph B67 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2017-03-01&anchor=para_B67_c&doctype=Appendix&seq=2 -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2017-01-01 -Paragraph B64 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2017-03-01&anchor=para_B64_j&doctype=Appendix&seq=2 -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2017-01-01 -Paragraph B64 -Subparagraph j -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2017-03-01&anchor=para_B64_j_i&doctype=Appendix&seq=2 -URIDate 2017-03-09 + Details
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- Definition The explanation of contractual obligations to purchase, construct or develop investment property or for repairs, maintenance or enhancements. [Refer: Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 75 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_75_h&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of payments on leases and subleases recognised as an expense by the lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2019-01-01 -Name IAS -Number 17 -IssueDate 2017-01-01 -Paragraph 35 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2017-03-02&anchor=para_35_c&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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