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Note 7 - Net Foreign Exchange Loss - Consolidated Monetary Assets (Liabilities) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Statement Line Items [Line Items] |  |
Cash and cash equivalents | $ 7,204 | $ 6,708
ZAR [member] | Total cash and cash equivalents [member] |  |
Statement Line Items [Line Items] |  |
Cash and cash equivalents | 62 |
ZAR [member] | USD denominated cash [member] |  |
Statement Line Items [Line Items] |  |
Cash and cash equivalents | 61 |
ZAR [member] | ZiG denominated cash [member] |  |
Statement Line Items [Line Items] |  |
Cash and cash equivalents | 0 |
ZAR [member] | GBP denominated cash [member] |  |
Statement Line Items [Line Items] |  |
Cash and cash equivalents | 1 |
ZAR [member] | Trade and other receivables, ZiG denominated [member] |  |
Statement Line Items [Line Items] |  |
Trade and other receivables - ZiG denominated | 0 |
ZAR [member] | Trade and other payables, ZiG denominated [member] |  |
Statement Line Items [Line Items] |  |
Trade and other payables - ZiG denominated | 0 |
ZAR [member] | Denominated receivables and payables [member] |  |
Statement Line Items [Line Items] |  |
Total cash and receivables, net of payables | 62 |
US dollars [member] | Total cash and cash equivalents [member] |  |
Statement Line Items [Line Items] |  |
Cash and cash equivalents | 174 |
US dollars [member] | USD denominated cash [member] |  |
Statement Line Items [Line Items] |  |
Cash and cash equivalents | 0 |
US dollars [member] | ZiG denominated cash [member] |  |
Statement Line Items [Line Items] |  |
Cash and cash equivalents | 172 |
US dollars [member] | GBP denominated cash [member] |  |
Statement Line Items [Line Items] |  |
Cash and cash equivalents | 2 |
US dollars [member] | Trade and other receivables, ZiG denominated [member] |  |
Statement Line Items [Line Items] |  |
Trade and other receivables - ZiG denominated | 3,835 |
US dollars [member] | Trade and other payables, ZiG denominated [member] |  |
Statement Line Items [Line Items] |  |
Trade and other payables - ZiG denominated | (358) |
US dollars [member] | Denominated receivables and payables [member] |  |
Statement Line Items [Line Items] |  |
Total cash and receivables, net of payables | $ 3,651 |

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