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Income tax incurred and deferred: (Details 2) - MXN ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Current deferred income tax: |  |  |  |
Deferred tax assets, current |  | $ 73,710 | $ 30,615 |
Non-current deferred income tax: |  |  |  |
Deferred tax assets, non-current |  | 253,310 | 33,930 |
Deferred income tax asset |  | 327,020 | 64,545 |
Non-current deferred income tax payable: |  |  |  |
Non-current deferred income tax liability |  | (3,360,950) | (1,673,350) |
Amortization of deferred expenses |  | (1,375) | (709) |
Total deferred income tax, net |  | (3,033,930) | (1,608,805) |
Deferred tax liability (asset) |  | 3,033,930 | 1,456,020 | $ 1,523,722
Allowance for credit losses [member] |  |  |  |
Non-current deferred income tax: |  |  |  |
Deferred tax assets, non-current |  | 44,916 | 33,930 |
Non-current deferred income tax payable: |  |  |  |
Deferred tax liability (asset) |  | (44,916) | (33,930) | (31,576)
Recoverable Asset Tax [member] |  |  |  |
Non-current deferred income tax: |  |  |  |
Deferred income tax asset |  |  | 152,785 |
Non-current deferred income tax payable: |  |  |  |
Deferred tax liability (asset) |  | 0 | (152,785) | $ (186,875)
Accrued Liabilities [member] |  |  |  |
Current deferred income tax: |  |  |  |
Deferred tax assets, current |  | 48,439 | 30,615 |
Advances [Member] |  |  |  |
Current deferred income tax: |  |  |  |
Deferred tax assets, current |  | 25,271 |  |
bank Loan fair Value [Member] |  |  |  |
Current deferred income tax: |  |  |  |
Deferred tax assets, current |  |  | 208,394 |
Fixed assets and concession [Member] |  |  |  |
Non-current deferred income tax payable: |  |  |  |
Non-current deferred income tax liability | [1] | (2,900,893) | (1,672,641) |
Deferred Income [Member] |  |  |  |
Non-current deferred income tax payable: |  |  |  |
Non-current deferred income tax liability |  | $ (458,682) |  |
[1] | ncludes Ps.267,307 and Ps.357,563 from Aerostar and Airplan only in, 2017.

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