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Note 20 - Borrowings - Significant Borrowings as of Closing Date (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Disclosure of detailed information about borrowings [line items] |  |
Significant borrowings as of closing date | $ 619,007 | $ 822,152
Significant borrowings as of closing date [member] | Maverick Tube Corporation and Subsidiaries One [Member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Significant borrowings as of closing date | 50,000 |
Significant borrowings as of closing date [member] | Maverick Tube Corporation and Subsidiaries Two [Member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Significant borrowings as of closing date | 75,000 |
Significant borrowings as of closing date [member] | Tamsa Hydril and Other One [Member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Significant borrowings as of closing date | 60,000 |
Significant borrowings as of closing date [member] | Tamsa Hydril and Other Two [Member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Significant borrowings as of closing date | 80,000 |
Significant borrowings as of closing date [member] | Tamsa Hydril and Other Three [Member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Significant borrowings as of closing date | 60,000 |
Significant borrowings as of closing date [member] | Saudi Steel Pipe Company [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Significant borrowings as of closing date | $ 81,000 |

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- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard -URIDate 2019-03-27 + Details
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