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Note 21 - Assets Held for Sale - Noncurrent Assets Held for Sale (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | [1] | Jan. 01, 2019
--- | --- | --- | --- | ---
Statement Line Items [Line Items] |  |  |  |
Non-current assets held for sale | $ 500 |  | $ 296 | [1]
Eagle Vulture, Mascot and Penzance [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Non-current assets held for sale | 500 |  |  |
Eersteling Gold Mining Company Limited [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Non-current assets held for sale |  |  | $ 296 |
[1] | The Group voluntarily changed its disclosure policy for exploration and evaluation assets to be disclosed separately as Exploration and evaluation assets rather than as part of Property, plant and equipment; similarly lease liabilities were classified separately from trade and other payables (refer to note 4(b)(i) and 4(b)(ii)). The new disclosure policies were adopted from December, 2020 and have been applied retrospectively.

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- Definition The amount of non-current assets or disposal groups classified as held for sale or as held for distribution to owners. [Refer: Non-current assets or disposal groups classified as held for distribution to owners; Non-current assets or disposal groups classified as held for sale] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_j&doctype=Standard -URIDate 2020-01-01 + Details
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