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Note 12 - Right-of-use Assets, Net and Lease Liabilities - Evolution of Right-of-use Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | $ 233,126 |  |  |
Cost and Depreciation end of the year | 241,953 |  | $ 233,126 |
Gross carrying amount [member] |  |  |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | 275,720 |  | 238,400 |
Currency translation adjustment | 437 |  | (74) |
Increase due to business combinations | 24,747 | [1] | 2,267 | [2]
Additions | 59,141 |  | 41,442 |
Transfers / Reclassifications | 117 |  |  |
Disposals | (26,257) |  | (6,315) |
Cost and Depreciation end of the year | 333,905 |  | 275,720 |
Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | 42,594 |  |  |
Currency translation adjustment | 243 |  | 8 |
Depreciation charge | 57,791 |  | 44,291 |
Transfers / Reclassifications | 117 |  |  |
Disposals | (8,793) |  | (1,705) |
Cost and Depreciation end of the year | 91,952 |  | 42,594 |
Land and civil buildings [member] |  |  |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | 27,807 |  |  |
Cost and Depreciation end of the year | 26,790 |  | 27,807 |
Land and civil buildings [member] | Gross carrying amount [member] |  |  |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | 36,137 |  | 27,713 |
Currency translation adjustment | (839) |  | (88) |
Increase due to business combinations | 3,461 | [1] | 229 | [2]
Additions | 11,534 |  | 9,292 |
Transfers / Reclassifications | 439 |  |  |
Disposals | (8,800) |  | (1,009) |
Cost and Depreciation end of the year | 41,932 |  | 36,137 |
Land and civil buildings [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | 8,330 |  |  |
Currency translation adjustment | (92) |  | (3) |
Depreciation charge | 13,200 |  | 8,514 |
Transfers / Reclassifications | (2,876) |  |  |
Disposals | (3,420) |  | (181) |
Cost and Depreciation end of the year | 15,142 |  | 8,330 |
Industrial buildings, plant and production equipment [member] |  |  |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | 194,808 |  |  |
Cost and Depreciation end of the year | 205,365 |  | 194,808 |
Industrial buildings, plant and production equipment [member] | Gross carrying amount [member] |  |  |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | 225,389 |  | 202,352 |
Currency translation adjustment | 746 |  | 6 |
Increase due to business combinations | 13,730 | [1] | 2,038 | [2]
Additions | 42,573 |  | 24,985 |
Transfers / Reclassifications | (458) |  | 496 |
Disposals | (8,622) |  | (4,488) |
Cost and Depreciation end of the year | 273,358 |  | 225,389 |
Industrial buildings, plant and production equipment [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | 30,581 |  |  |
Currency translation adjustment | 145 |  | 3 |
Depreciation charge | 37,671 |  | 31,869 |
Transfers / Reclassifications | 1,702 |  | (62) |
Disposals | (2,106) |  | (1,229) |
Cost and Depreciation end of the year | 67,993 |  | 30,581 |
Vehicles, furniture and fixtures [member] |  |  |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | 10,511 |  |  |
Cost and Depreciation end of the year | 9,798 |  | 10,511 |
Vehicles, furniture and fixtures [member] | Gross carrying amount [member] |  |  |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | 14,194 |  | 8,335 |
Currency translation adjustment | 530 |  | 8 |
Increase due to business combinations | 7,556 | [1] |  | [2]
Additions | 5,034 |  | 7,165 |
Transfers / Reclassifications | 136 |  | (496) |
Disposals | (8,835) |  | (818) |
Cost and Depreciation end of the year | 18,615 |  | 14,194 |
Vehicles, furniture and fixtures [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Disclosure of maturity analysis of operating lease payments [line items] |  |  |  |
Cost and Depreciation beginning of the year | 3,683 |  |  |
Currency translation adjustment | 190 |  | 8 |
Depreciation charge | 6,920 |  | 3,908 |
Transfers / Reclassifications | 1,291 |  | 62 |
Disposals | (3,267) |  | (295) |
Cost and Depreciation end of the year | $ 8,817 |  | $ 3,683 |
[1] | Related to IPSCO acquisition. See note 32.
[2] | Related to SSPC acquisition.

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