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Note 5 - Impairment charge (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] |  |  |  |
Growth rate used in current estimate of value in use |  | 2.00% |  |
Impairment charge | $ 622,000 | $ 622,402 |  |
Discount rate, measurement input [member] |  |  |  |
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] |  |  |  |
Percentage of reasonably possible increase (decrease) in key assumption resulting additional impairment |  | 1.00% |  |
Growth rate, measurement input [member] |  |  |  |
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] |  |  |  |
Percentage of reasonably possible increase (decrease) in key assumption resulting additional impairment |  | (1.00%) |  |
Projected change rate in future cash flows, measurement input [member] |  |  |  |
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] |  |  |  |
Percentage of reasonably possible increase (decrease) in key assumption resulting additional impairment |  | (5.00%) |  |
Tubes [member] |  |  |  |
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] |  |  |  |
Impairment charge | 582,000 |  |  |
Top of range [member] |  |  |  |
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] |  |  |  |
Discount rate used in current estimate of value in use |  | 13.60% |  |
Bottom of range [member] |  |  |  |
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] |  |  |  |
Discount rate used in current estimate of value in use |  | 8.00% |  |
OCTG (USA) [member] |  |  |  |
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] |  |  |  |
Impairment charge | 225,000 | $ 225,000 |  |
IPSCO [Member] |  |  |  |
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] |  |  |  |
Impairment charge | 357,000 | 357,000 |  |
Coiled Tubing [member] |  |  |  |
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] |  |  |  |
Impairment charge | 4,000 | 4,000 |  |
Rods USA [Member] |  |  |  |
Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] |  |  |  |
Impairment charge | $ 36,000 | $ 36,000 |  |

X
- Definition The discount rate used in the current estimate of the present value of the future cash flows expected to be derived from an asset or cash-generating unit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2019-01-01 -Paragraph 130 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2019-en-r&anchor=para_130_g&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of impairment loss or reversal of impairment loss recognised in profit or loss. [Refer: Impairment loss recognised in profit or loss; Reversal of impairment loss recognised in profit or loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 99 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_99&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The growth rate used in the current estimate of the present value of the future cash flows expected to be derived from an asset or cash-generating unit. + References No definition available. + Details
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X
- Definition The reasonably possible percentage of the increase (decrease) in the key assumption resulting additional impairment. + References No definition available. + Details
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- Details
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- Details
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- Details
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