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v3.21.1

Intangible assets, net (Details) $ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2020 MXN ($) | Dec. 31, 2019 MXN ($) | Dec. 31, 2018 MXN ($)
Composition and movement of intangible assets |  |  |  |
Beginning balance |  | $ 167,397 |  |
Ending balance | $ 9,603 | 191,562 | $ 167,397 |
Software |  |  |  |
Composition and movement of intangible assets |  |  |  |
Beginning balance |  | 167,397 | 179,124 |
Additions |  | 124,724 | 77,325 |
Amortization |  | (100,618) | (87,667) |
Exchange differences |  | 59 | (1,385) |
Ending balance |  | 191,562 | 167,397 | $ 179,124
Amortization expense |  | 100,618 | 87,667 | $ 72,885
Software | Gross value |  |  |  |
Composition and movement of intangible assets |  |  |  |
Beginning balance |  | 579,360 |  |
Ending balance |  | 704,257 | 579,360 |
Software | Accumulated depreciation / amortization |  |  |  |
Composition and movement of intangible assets |  |  |  |
Beginning balance |  | (411,963) |  |
Ending balance |  | $ (512,695) | $ (411,963) |
Software | Minimum |  |  |  |
Composition and movement of intangible assets |  |  |  |
Estimated useful lives (in years) | 1 year | 1 year |  |
Software | Maximum |  |  |  |
Composition and movement of intangible assets |  |  |  |
Estimated useful lives (in years) | 4 years | 4 years |  |

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- Definition The amount of amortisation expense. Amortisation is the systematic allocation of depreciable amounts of intangible assets over their useful lives. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in intangible assets other than goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_e_vii&doctype=Standard -URIDate 2020-01-01 + Details
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