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Note 32 - Cash Flow Information - Non-cash Items and Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Statement Line Items [Line Items] |  |  |
Operating profit | $ 38,360 | $ 40,735 | $ 60,889
Impairment of property, plant and equipment | 497 | 0 | 144
Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss, exploration and evaluation assets | 3,837 | 2,930 | 0
Expected credit losses on deferred consideration on disposal of subsidiary | 761 | 0 | 0
Profit on sale of subsidiary | 0 | 0 | (5,409)
Unrealised foreign exchange gains (note 13) | (2,754) | (8,367) | (31,307)
Cash-settled share-based expense (note 12.1) | 477 | 1,413 | 689
Cash-settled share-based expense included in production costs (note 8) | 692 | 634 | 107
Non-cash portion of cash-settled share-based expense | (420) | (1) | (1,384)
Depreciation | 8,046 | 4,628 | 4,434
Fair value loss on derivative assets (note 14.1) | 105 | 266 | (102)
Fair value loss on derivative liabilities (note 14.1) | (135) |  |
Disposal of property, plant and equipment | 0 | 0 | 63
Derecognition of property, plant and equipment | (38) | 182 | 0
Cash generated from operations before working capital changes | 49,698 | 42,420 | 28,124
Inventories | (4,016) | (5,707) | (1,655)
Prepayments | (4,272) | 816 | (2,099)
Trade and other receivables | (4,746) | 539 | 393
Trade and other payables | 2,039 | (101) | (878)
Cash generated from operations | 38,703 | 37,967 | 23,885
Derivative liabilities [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value loss on derivative liabilities (note 14.1) | $ 135 | $ 0 | $ 0

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