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Cash and cash equivalents (Details 3) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco Crédito e Inversiones |
Notional amount | $ 16,796 | $ 1,039,755
Accrued income | 432 | 517
Short-term deposits, classified as cash equivalents | $ 187,666 | $ 290,914
Short term deposit One [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Scotiabank | Scotiabank Sud Americano
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 2.50% | 0.24%
Date of short term deposit | Oct. 18, 2018 | Nov. 21, 2017
Short term deposits, Maturity | Jan. 16, 2019 | Jan. 02, 2018
Notional amount | $ 14,606 | $ 8,943
Accrued income | 90 | 30
Short-term deposits, classified as cash equivalents | $ 14,696 | $ 8,973
Short term deposit Two [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco Crédito e Inversiones | Banco Itau Chile
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 2.55% | 0.24%
Date of short term deposit | Nov. 06, 2018 | Nov. 28, 2017
Short term deposits, Maturity | Jan. 09, 2019 | Jan. 02, 2018
Notional amount | $ 19,632 | $ 15,652
Accrued income | 92 | 41
Short-term deposits, classified as cash equivalents | $ 19,724 | $ 15,693
Short term deposit Three [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Scotiabank | Banco Itau Chile
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 2.55% | 0.24%
Date of short term deposit | Nov. 30, 2018 | Nov. 28, 2017
Short term deposits, Maturity | Jan. 03, 2019 | Jan. 02, 2018
Notional amount | $ 14,393 | $ 15,652
Accrued income | 38 | 41
Short-term deposits, classified as cash equivalents | $ 14,431 | $ 15,693
Short term deposit Four [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Scotiabank | Banco BBVA Chile
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 2.55% | 0.23%
Date of short term deposit | Dec. 03, 2018 | Nov. 28, 2017
Short term deposits, Maturity | Jan. 03, 2019 | Jan. 02, 2018
Notional amount | $ 11,515 | $ 15,652
Accrued income | 27 | 40
Short-term deposits, classified as cash equivalents | $ 11,542 | $ 15,692
Short term deposit Five [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Itau-Corpbanca | Banco BBVA Chile
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 2.50% | 0.23%
Date of short term deposit | Dec. 03, 2018 | Nov. 28, 2017
Short term deposits, Maturity | Jan. 03, 2019 | Jan. 02, 2018
Notional amount | $ 14,393 | $ 15,652
Accrued income | 34 | 40
Short-term deposits, classified as cash equivalents | $ 14,427 | $ 15,692
Short term deposit Six [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Itau-Corpbanca | Banco Itau Chile
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 2.50% | 0.25%
Date of short term deposit | Dec. 07, 2018 | Nov. 29, 2017
Short term deposits, Maturity | Jan. 09, 2019 | Feb. 27, 2018
Notional amount | $ 14,393 | $ 18,857
Accrued income | 29 | 50
Short-term deposits, classified as cash equivalents | $ 14,422 | $ 18,907
Short term deposit Seven [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Itau-Corpbanca | Banco Crédito e Inversiones
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 2.50% | 0.26%
Date of short term deposit | Dec. 10, 2018 | Dec. 12, 2017
Short term deposits, Maturity | Jan. 09, 2019 | Jan. 11, 2018
Notional amount | $ 12,954 | $ 15,982
Accrued income | 23 | 26
Short-term deposits, classified as cash equivalents | $ 12,977 | $ 16,008
Short term deposit Eight [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Scotiabank | Banco Crédito e Inversiones
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 2.35% | 0.26%
Date of short term deposit | Dec. 10, 2018 | Dec. 12, 2017
Short term deposits, Maturity | Jan. 09, 2019 | Jan. 11, 2018
Notional amount | $ 12,954 | $ 8,524
Accrued income | 21 | 14
Short-term deposits, classified as cash equivalents | $ 12,975 | $ 8,538
Short term deposit Nine [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Itau-Corpbanca | Banco Itau Chile
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | Ch$
Short term deposits, Interest rate | 3.06% | 0.24%
Date of short term deposit | Dec. 11, 2018 | Dec. 12, 2017
Short term deposits, Maturity | Jan. 11, 2019 | Jan. 11, 2018
Notional amount | $ 1,300 | $ 15,982
Accrued income | 2 | 24
Short-term deposits, classified as cash equivalents | $ 1,302 | $ 16,006
Short term deposit Ten [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco Estado | Banco Itau Chile
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | Ch$
Short term deposits, Interest rate | 2.75% | 0.24%
Date of short term deposit | Dec. 12, 2018 | Dec. 12, 2017
Short term deposits, Maturity | Jan. 15, 2019 | Jan. 11, 2018
Notional amount | $ 1,000 | $ 7,458
Accrued income | 1 | 11
Short-term deposits, classified as cash equivalents | $ 1,001 | $ 7,469
Short term deposit Eleven [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Itau-Corpbanca | Banco Crédito e Inversiones
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 2.50% | 0.26%
Date of short term deposit | Dec. 14, 2018 | Dec. 14, 2017
Short term deposits, Maturity | Jan. 09, 2019 | Jan. 16, 2018
Notional amount | $ 14,392 | $ 19,780
Accrued income | 20 | 29
Short-term deposits, classified as cash equivalents | $ 14,412 | $ 19,809
Short term deposit Twelve [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Scotiabank | Banco Crédito e Inversiones
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 2.65% | 0.26%
Date of short term deposit | Dec. 17, 2018 | Dec. 14, 2017
Short term deposits, Maturity | Jan. 17, 2019 | Jan. 16, 2018
Notional amount | $ 14,393 | $ 15,665
Accrued income | 18 | 23
Short-term deposits, classified as cash equivalents | $ 14,411 | $ 15,688
Short term deposit Thirteen [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Scotiabank | Banco Crédito e Inversiones
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 2.60% | 0.26%
Date of short term deposit | Dec. 17, 2018 | Dec. 14, 2017
Short term deposits, Maturity | Jan. 17, 2019 | Jan. 16, 2018
Notional amount | $ 10,892 | $ 11,488
Accrued income | 13 | 17
Short-term deposits, classified as cash equivalents | $ 10,905 | $ 11,505
Short term deposit Fourteen [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit |  | Banco Crédito e Inversiones
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | Ch$
Short term deposits, Interest rate | 2.93% | 0.26%
Date of short term deposit | Dec. 17, 2018 | Dec. 15, 2017
Short term deposits, Maturity | Jan. 31, 2019 | Jan. 16, 2018
Notional amount | $ 1,400 | $ 15,568
Accrued income | 2 | 22
Short-term deposits, classified as cash equivalents | $ 1,402 | $ 15,590
Short term deposit Fifteen [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Itau-Corpbanca | Banco Crédito e Inversiones
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | Ch$
Short term deposits, Interest rate | 3.30% | 0.26%
Date of short term deposit | Dec. 17, 2018 | Dec. 15, 2017
Short term deposits, Maturity | Jan. 31, 2019 | Jan. 16, 2018
Notional amount | $ 1,400 | $ 15,568
Accrued income | 2 | 22
Short-term deposits, classified as cash equivalents | $ 1,402 | $ 15,590
Short term deposit Sixteen [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Itau-Corpbanca | Banco Crédito e Inversiones
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | Ch$
Short term deposits, Interest rate | 3.40% | 0.26%
Date of short term deposit | Dec. 17, 2018 | Dec. 15, 2017
Short term deposits, Maturity | Jan. 31, 2019 | Jan. 16, 2018
Notional amount | $ 3,000 | $ 15,568
Accrued income | 4 | 22
Short-term deposits, classified as cash equivalents | $ 3,004 | $ 15,590
Short term deposit Seventeen [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco de Chile | Banco BBVA Chile
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | Ch$
Short term deposits, Interest rate | 3.06% | 0.24%
Date of short term deposit | Dec. 17, 2018 | Dec. 29, 2017
Short term deposits, Maturity | Jan. 31, 2019 | Jan. 10, 2018
Notional amount | $ 1,700 | $ 4,107
Accrued income | 2 | 1
Short-term deposits, classified as cash equivalents | $ 1,702 | $ 4,108
Short term deposit Eighteen [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Scotiabank Sud Americano | Banco BBVA Chile
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | Ch$
Short term deposits, Interest rate | 2.95% | 0.24%
Date of short term deposit | Dec. 17, 2018 | Dec. 29, 2017
Short term deposits, Maturity | Jan. 31, 2019 | Jan. 10, 2018
Notional amount | $ 1,500 | $ 2,765
Accrued income | 2 | 0
Short-term deposits, classified as cash equivalents | $ 1,502 | $ 2,765
Short term deposit Nineteen [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco de Chile | Banco Santander - Santiago
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | US$
Short term deposits, Interest rate | 3.26% | 0.28%
Date of short term deposit | Dec. 19, 2018 | Dec. 27, 2017
Short term deposits, Maturity | Jan. 31, 2019 | Jan. 18, 2018
Notional amount | $ 800 | $ 700
Accrued income | 1 | 0
Short-term deposits, classified as cash equivalents | $ 801 | $ 700
Short term deposit Twenty [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco Crédito e Inversiones | Banco Santander - Santiago
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | US$
Short term deposits, Interest rate | 3.42% | 0.40%
Date of short term deposit | Dec. 26, 2018 | Dec. 15, 2017
Short term deposits, Maturity | Feb. 26, 2019 | Feb. 13, 2018
Notional amount | $ 2,800 | $ 15,000
Accrued income | 1 | 27
Short-term deposits, classified as cash equivalents | $ 2,801 | $ 15,027
Short term deposit Twenty One [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco de Chile | Banco Santander - Santiago
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | US$
Short term deposits, Interest rate | 3.26% | 0.40%
Date of short term deposit | Dec. 26, 2018 | Dec. 15, 2017
Short term deposits, Maturity | Feb. 26, 2019 | Feb. 13, 2018
Notional amount | $ 2,800 | $ 14,000
Accrued income | 1 | 25
Short-term deposits, classified as cash equivalents | $ 2,801 | $ 14,025
Short term deposit Twenty Two [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Scotiabank Sud Americano (*) | Corpbanca
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 0.26% | 0.22%
Date of short term deposit | Dec. 27, 2018 | Dec. 28, 2017
Short term deposits, Maturity | Jan. 07, 2019 | Jan. 04, 2018
Notional amount | $ 1,439 | $ 1,301
Accrued income | 1 | 0
Short-term deposits, classified as cash equivalents | $ 1,440 | $ 1,301
Short term deposit Twenty Three [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Scotiabank Sud Americano (*) | Scotiabank Sud Americano
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 0.26% | 0.21%
Date of short term deposit | Dec. 27, 2018 | Dec. 29, 2017
Short term deposits, Maturity | Jan. 14, 2019 | Jan. 05, 2018
Notional amount | $ 2,879 | $ 976
Accrued income | 1 | 0
Short-term deposits, classified as cash equivalents | $ 2,880 | $ 976
Short term deposit Twenty Four [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Scotiabank Sud Americano (*) | Scotiabank Sud Americano
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | Ch$
Short term deposits, Interest rate | 0.26% | 0.21%
Date of short term deposit | Dec. 27, 2018 | Dec. 29, 2017
Short term deposits, Maturity | Jan. 21, 2019 | Jan. 05, 2018
Notional amount | $ 1,439 | $ 569
Accrued income | 1 | 0
Short-term deposits, classified as cash equivalents | $ 1,440 | $ 569
Short term deposit Twenty Five [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco Estado | Banco Santander - Santiago
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | US$
Short term deposits, Interest rate | 3.15% | 2.45%
Date of short term deposit | Dec. 28, 2018 | Dec. 06, 2017
Short term deposits, Maturity | Jan. 28, 2019 | Jan. 05, 2018
Notional amount | $ 2,000 | $ 3,500
Accrued income | 1 | 6
Short-term deposits, classified as cash equivalents | $ 2,001 | $ 3,506
Short term deposit Twenty Six [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco Estado | Scotiabank Sud Americano
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | US$
Short term deposits, Interest rate | 3.15% | 3.40%
Date of short term deposit | Dec. 28, 2018 | Dec. 15, 2017
Short term deposits, Maturity | Jan. 28, 2019 | Jan. 16, 2018
Notional amount | $ 600 | $ 2,000
Accrued income | 0 | 3
Short-term deposits, classified as cash equivalents | $ 600 | $ 2,003
Short term deposit Twenty Seven [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco de Chile | Banco BBVA Chile
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | US$
Short term deposits, Interest rate | 3.16% | 2.80%
Date of short term deposit | Dec. 28, 2018 | Dec. 26, 2017
Short term deposits, Maturity | Jan. 28, 2019 | Jan. 26, 2018
Notional amount | $ 2,000 | $ 2,200
Accrued income | 1 | 1
Short-term deposits, classified as cash equivalents | $ 2,001 | $ 2,201
Short term deposit Twenty Eight [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco Crédito e Inversiones | Banco Crédito e Inversiones
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | US$
Short term deposits, Interest rate | 2.53% | 2.30%
Date of short term deposit | Dec. 28, 2018 | Dec. 27, 2017
Short term deposits, Maturity | Jan. 08, 2019 | Jan. 04, 2018
Notional amount | $ 1,000 | $ 2,300
Accrued income | 0 | 1
Short-term deposits, classified as cash equivalents | $ 1,000 | $ 2,301
Short term deposit Twenty Nine [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco Crédito e Inversiones | Banco Santander - Santiago
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | US$
Short term deposits, Interest rate | 3.08% | 2.88%
Date of short term deposit | Dec. 28, 2018 | Dec. 27, 2017
Short term deposits, Maturity | Jan. 28, 2019 | Jan. 04, 2018
Notional amount | $ 2,500 | $ 2,300
Accrued income | 1 | 1
Short-term deposits, classified as cash equivalents | $ 2,501 | $ 2,301
Short term deposit Thirty [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Banco Santander- Santiago | Banco BBVA Chile
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | Ch$ | US$
Short term deposits, Interest rate | 0.20% | 2.80%
Date of short term deposit | Dec. 28, 2018 | Dec. 27, 2017
Short term deposits, Maturity | Jan. 04, 2019 | Jan. 04, 2018
Notional amount | $ 432 | $ 1,400
Accrued income | 0 | 0
Short-term deposits, classified as cash equivalents | $ 432 | $ 1,400
Short term deposit Thirty One [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | BBVA Banco Francés | BBVA Banco Francés
Description of type of deposit | Fixed term | Fixed term
Short term deposits, original currency | US$ | US$
Short term deposits, Interest rate | 0.00% | 0.19%
Date of short term deposit | Dec. 31, 2018 | Dec. 11, 2017
Short term deposits, Maturity | Jan. 21, 2019 | Jan. 31, 2018
Notional amount | $ 81 | $ 163
Accrued income | 3 | 0
Short-term deposits, classified as cash equivalents | $ 84 | $ 163
Short term deposit Thirty Two [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit | Nedbank | Nedbank
Description of type of deposit | On demand | On demand
Short term deposits, original currency | US$ | US$
Short term deposits, Interest rate | 0.00% | 0.00%
Date of short term deposit | Dec. 31, 2018 | Dec. 01, 2017
Short term deposits, Maturity | Jan. 01, 2019 | Jan. 31, 2018
Notional amount | $ 647 | $ 3,686
Accrued income | 0 | 0
Short-term deposits, classified as cash equivalents | $ 647 | $ 3,686
Short term deposit Thirty Three [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Name of the receiver of deposit |  | ABN Amro Bank
Description of type of deposit |  | Fixed term
Short term deposits, original currency |  | US$
Short term deposits, Interest rate |  | 0.00%
Date of short term deposit |  | Dec. 31, 2017
Short term deposits, Maturity |  | Jan. 02, 2018
Notional amount |  | $ 1,439
Accrued income |  | 0
Short-term deposits, classified as cash equivalents |  | $ 1,439

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