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Note 17 - Tax Expense - Movement in Recognised Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Statement Line Items [Line Items] |  |  |  |
Deferred tax assets (liabilities) |  | $ (4,147) | [1] | $ (3,066)
Recognised in profit or loss |  | (5,796) |  | (5,671)
Foreign exchange movement |  | 2,103 |  | 4,590
Deferred tax assets (liabilities) | [1] | (7,840) |  | (4,147)
Property, plant, and equipment deferred tax liability [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred tax assets (liabilities) |  | (5,380) |  | (4,117)
Recognised in profit or loss |  | (6,439) |  | (7,174)
Foreign exchange movement |  | 2,491 |  | 5,911
Deferred tax assets (liabilities) |  | (9,328) |  | (5,380)
Evaluation and exploration assets [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred tax assets (liabilities) |  | (29) |  | (78)
Recognised in profit or loss |  | (31) |  | (21)
Foreign exchange movement |  | 13 |  | 70
Deferred tax assets (liabilities) |  | (47) |  | (29)
Allowance for obsolete stock deferred tax asset [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred tax assets (liabilities) |  | 13 |  | 22
Recognised in profit or loss |  | 3 |  | 14
Foreign exchange movement |  | (13) |  | (23)
Deferred tax assets (liabilities) |  | 3 |  | 13
Prepayments deferred tax liability [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred tax assets (liabilities) |  | (3) |  | (4)
Recognised in profit or loss |  | (8) |  | 0
Foreign exchange movement |  | 1 |  | 1
Deferred tax assets (liabilities) |  | (10) |  | (3)
Unrealised foreign exchange gains (losses) [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred tax assets (liabilities) |  | 530 |  | 309
Recognised in profit or loss |  | 344 |  | 742
Foreign exchange movement |  | (375) |  | (521)
Deferred tax assets (liabilities) |  | 499 |  | 530
Trade and other payables [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred tax assets (liabilities) |  | 639 |  | 739
Recognised in profit or loss |  | 235 |  | 674
Foreign exchange movement |  | 115 |  | (774)
Deferred tax assets (liabilities) |  | 989 |  | 639
Cash-settled awards [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred tax assets (liabilities) |  | 8 |  | 5
Recognised in profit or loss |  | (8) |  | 3
Foreign exchange movement |  | 0 |  | 0
Deferred tax assets (liabilities) |  | 0 |  | 8
Provisions [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred tax assets (liabilities) |  | 60 |  | 58
Recognised in profit or loss |  | 123 |  | 76
Foreign exchange movement |  | (129) |  | (74)
Deferred tax assets (liabilities) |  | 54 |  | 60
Other temporary differences [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Deferred tax assets (liabilities) |  | 15 |  | 0
Recognised in profit or loss |  | (15) |  | 15
Foreign exchange movement |  | 0 |  | 0
Deferred tax assets (liabilities) |  | $ 0 |  | $ 15
[1] | The net deferred tax liability consists of a deferred tax asset of $194 (2020: $87, January 1, 2020: $63) from the South African operation and a net deferred tax liability of $8,034 (2020: $4,234, January 1, 2020: $3,129) due to the Zimbabwean operation. The amounts are in different tax jurisdictions and cannot be offset. The amounts are presented as part of Non-current assets and Non-current liabilities in the Statements of financial position. The deferred tax asset recognised is supported by evidence of probable future taxable income.

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- Definition The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2021-01-01 -Paragraph 81 -Subparagraph g -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2021-en-r&anchor=para_81_g_ii&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The increase (decrease) in deferred tax liability (asset) resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Deferred tax liability (asset)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 12 -IssueDate 2021-01-01 -Paragraph 81 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2021-en-r&anchor=para_81&doctype=Standard -URIDate 2021-03-24 + Details
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