XML 182 R168.htm IDEA: XBRL DOCUMENT
v3.19.1

Shareholders' equity, net (Details 2) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners |  | $ 28,420 | $ 28,135 | $ 15,021
Dividends 2018 [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners |  | 22,860 |  |
Dividends 2018 [Member] | Annual General Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners |  | 7,621 |  |
Dividends 2018 [Member] | Directors Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners |  | 15,239 |  |
Dividends 2017 [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners | $ 22,099 |  |  |
Dividends 2017 [Member] | Annual General Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners | 14,479 |  |  |
Dividends 2017 [Member] | Directors Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners | 7,620 |  |  |
Dividends 2016 [Member] | Directors Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners |  |  |  | 7,621
Ordinary shares [member] | Dividends 2018 [Member] | Annual General Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners |  | $ 8,269 |  |
Dividends paid, ordinary shares per share |  | $ 0.03 |  |
Ordinary shares [member] | Dividends 2018 [Member] | Directors Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners |  | $ 16,538 |  |
Dividends paid, ordinary shares per share |  | $ 0.06 |  |
Ordinary shares [member] | Dividends 2017 [Member] | Annual General Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners | 15,711 |  |  |
Dividends paid, ordinary shares per share |  |  | $ 0.056 |
Ordinary shares [member] | Dividends 2017 [Member] | Directors Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners | 8,269 |  |  |
Dividends paid, ordinary shares per share |  |  | $ 0.030 |
Ordinary shares [member] | Dividends 2016 [Member] | Directors Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners |  |  |  | $ 8,269
Dividends paid, ordinary shares per share |  |  |  | $ 0.03
Treasury shares [member] | Dividends 2018 [Member] | Annual General Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners |  | $ (648) |  |
Treasury shares [member] | Dividends 2018 [Member] | Directors Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners |  | $ (1,299) |  |
Treasury shares [member] | Dividends 2017 [Member] | Annual General Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners | (1,232) |  |  |
Treasury shares [member] | Dividends 2017 [Member] | Directors Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners | $ (649) |  |  |
Treasury shares [member] | Dividends 2016 [Member] | Directors Meeting [Member] |  |  |  |
Disclosure of Shareholders' equity, net [Line Items] |  |  |  |
Dividends recognised as distributions to owners |  |  |  | $ (648)

X
- References No definition available. + Details
Name: | cik0001013131_DisclosureOfShareholdersEquityNetLineItems
Namespace Prefix: | cik0001013131_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of dividends recognised as distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 107 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_107&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_DividendsPaid
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of dividends paid per ordinary share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 34 -IssueDate 2018-01-01 -Paragraph 16A -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=34&date=2018-03-01&anchor=para_16A_f&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_DividendsPaidOrdinarySharesPerShare
Namespace Prefix: | ifrs-full_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | cik0001013131_ClassesOfDividendAxis=cik0001013131_Dividends2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cik0001013131_TypeOfMeetingAxis=cik0001013131_AnnualGeneralMeetingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cik0001013131_TypeOfMeetingAxis=cik0001013131_DirectorsMeetingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cik0001013131_ClassesOfDividendAxis=cik0001013131_Dividends2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cik0001013131_ClassesOfDividendAxis=cik0001013131_Dividends2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_OrdinarySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_TreasurySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |