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Note 13 - Net Foreign Exchange Gain - Foreign Exchange Gain (Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Statement Line Items [Line Items] |  |  |  |
Unrealised foreign exchange gain |  | $ 4,217 | $ 12,736 | $ 2,755
Realised foreign exchange loss* | [1] | (6,767) | (8,325) | (1,571)
Net foreign exchange (loss) gain | [2] | $ (2,550) | $ 4,411 | $ 1,184
[1] | Realised foreign exchange losses were predominantly recognised on bullion sales receivables, bank balances and RTGS$ VAT.
[2] | After December 31, 2023 the RTGS$:USD conversion rate devalued from RTGS$ 6,105:USD 1 to RTGS$ 20,945:USD 1 on March, 25 2024. The devaluation in the exchange rate will devalue RTGS$-denominated monetary assets in quarter 1, of 2024.

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- Definition Related to realized foreign exchange gain (loss). + References No definition available. + Details
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- Definition The amount of unrealized foreign exchange gains (losses). + References No definition available. + Details
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- Definition The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 21 -IssueDate 2023-01-01 -Paragraph 52 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2023-en-r&anchor=para_52_a&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 35 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_35&doctype=Standard -URIDate 2023-03-23 + Details
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