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Equity - Accumulated other comprehensive income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
IFRS Statement [Line Items] |  |  |
Beginning balance | $ (952) |  |
Exchange differences arising on translation of foreign operations | 44 | $ 0 | $ (2)
Changes in fair value of financial assets | (2) | (5) | (26)
Remeasurement of defined benefit pension plans | (1) | 17 | 33
Ending balance | (548) | (952) |
Accumulated other Comprehensive income [member] |  |  |
IFRS Statement [Line Items] |  |  |
Beginning balance | (952) | (549) | (446)
Exchange differences arising on translation of foreign operations | 512 | (545) | (334)
Changes in fair value of financial assets | 67 | (30) | (869)
Remeasurement of defined benefit pension plans | (175) | 172 | 1,100
Ending balance | (548) | (952) | (549)
Defined benefit pension plans [member] |  |  |
IFRS Statement [Line Items] |  |  |
Beginning balance | 280 | 108 | (992)
Exchange differences arising on translation of foreign operations | 0 | 0 | 0
Changes in fair value of financial assets | 0 | 0 | 0
Remeasurement of defined benefit pension plans | (175) | 172 | 1,100
Ending balance | 105 | 280 | 108
Unrealized gain (losses) on securities [Member] |  |  |
IFRS Statement [Line Items] |  |  |
Beginning balance | (936) | (906) | (37)
Exchange differences arising on translation of foreign operations | 0 | 0 | 0
Changes in fair value of financial assets | 67 | (30) | (869)
Remeasurement of defined benefit pension plans | 0 | 0 | 0
Ending balance | (869) | (936) | (906)
Foreign currency translation [member] |  |  |
IFRS Statement [Line Items] |  |  |
Beginning balance | (296) | 249 | 583
Exchange differences arising on translation of foreign operations | 512 | (545) | (334)
Changes in fair value of financial assets | 0 | 0 | 0
Remeasurement of defined benefit pension plans | 0 | 0 | 0
Ending balance | $ 216 | $ (296) | $ 249

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