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Note 18 - Property, Plant, and Equipment - Reconciliation of Changes in Property, Plant, and Equipment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period | [1] | $ 97,427 |  |
Additions** |  | 20,595 | $ 19,915 |
Impairments*** |  |  |  |
Initial recognition of right of use assets |  | 146 |  |
Disposals |  | (165) |  |
Balance at end of period |  | 113,651 | 97,427 | [1]
Impairments |  |  |  |
Gross carrying amount [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 127,815 | 109,052 |
Additions** | [2] | 20,595 | 19,915 |
Impairments*** | [3] | (144) | (822) |
Assets held for sale |  |  | (214) |
Reallocations between asset classes |  |  |  |
Foreign exchange movement |  | 18 | (116) |
Initial recognition of right of use assets |  | 409 |  |
Disposals |  | (228) |  |
Balance at end of period |  | 148,465 | 127,815 |
Impairments | [3] | (144) | (822) |
Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 30,388 | 26,974 |
Impairments*** |  |  | (614) |
Foreign exchange movement |  | 11 | (43) |
Balance at end of period |  | 34,814 | 30,388 |
Depreciation for the year |  | 4,434 | 4,071 |
Impairments |  |  | (614) |
Land and buildings [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 5,928 |  |
Impairments*** |  |  |  |
Initial recognition of right of use assets |  | 146 |  |
Disposals |  | (149) |  |
Balance at end of period |  | 5,420 | 5,928 |
Impairments |  |  |  |
Land and buildings [member] | Gross carrying amount [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 10,339 | 9,434 |
Additions** | [2] | 267 |  |
Impairments*** | [3] |  |  |
Assets held for sale |  |  | (140) |
Reallocations between asset classes |  | 25 | 1,068 |
Foreign exchange movement |  | 5 | (23) |
Initial recognition of right of use assets |  | 409 |  |
Disposals |  | (212) |  |
Balance at end of period |  | 10,833 | 10,339 |
Impairments | [3] |  |  |
Land and buildings [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 4,411 | 3,636 |
Impairments*** |  |  |  |
Foreign exchange movement |  |  |  |
Balance at end of period |  | 5,413 | 4,411 |
Depreciation for the year |  | 1,005 | 775 |
Impairments |  |  |  |
Mining assets [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 68,688 |  |
Impairments*** |  |  |  |
Initial recognition of right of use assets |  |  |  |
Disposals |  |  |  |
Balance at end of period |  | 84,217 | 68,688 |
Impairments |  |  |  |
Mining assets [member] | Gross carrying amount [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 74,509 | 61,498 |
Additions** | [2] | 19,020 | 18,719 |
Impairments*** | [3] |  | (60) |
Assets held for sale |  |  | (74) |
Reallocations between asset classes |  | (2,989) | (5,525) |
Foreign exchange movement |  | 2 | (49) |
Initial recognition of right of use assets |  |  |  |
Disposals |  |  |  |
Balance at end of period |  | 90,542 | 74,509 |
Impairments | [3] |  | (60) |
Mining assets [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 5,821 | 5,172 |
Impairments*** |  |  |  |
Foreign exchange movement |  |  |  |
Balance at end of period |  | 6,325 | 5,821 |
Depreciation for the year |  | 504 | 649 |
Impairments |  |  |  |
Tangible exploration and evaluation assets [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 6,967 |  |
Impairments*** |  |  |  |
Initial recognition of right of use assets |  |  |  |
Disposals |  |  |  |
Balance at end of period |  | 7,139 | 6,967 |
Impairments |  |  |  |
Tangible exploration and evaluation assets [member] | Gross carrying amount [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 6,967 | 6,967 |
Additions** | [2] | 172 |  |
Impairments*** | [3] |  |  |
Assets held for sale |  |  |  |
Reallocations between asset classes |  |  |  |
Foreign exchange movement |  |  |  |
Initial recognition of right of use assets |  |  |  |
Disposals |  |  |  |
Balance at end of period |  | 7,139 | 6,967 |
Impairments | [3] |  |  |
Tangible exploration and evaluation assets [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  |  |  |
Impairments*** |  |  |  |
Foreign exchange movement |  |  |  |
Balance at end of period |  |  |  |
Depreciation for the year |  |  |  |
Impairments |  |  |  |
Machinery [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 15,318 |  |
Impairments*** |  |  |  |
Initial recognition of right of use assets |  |  |  |
Disposals |  |  |  |
Balance at end of period |  | 16,345 | 15,318 |
Impairments |  |  |  |
Machinery [member] | Gross carrying amount [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 32,675 | 27,881 |
Additions** | [2] | 897 | 899 |
Impairments*** | [3] | (144) | (529) |
Assets held for sale |  |  |  |
Reallocations between asset classes |  | 2,964 | 4,457 |
Foreign exchange movement |  | 3 | (33) |
Initial recognition of right of use assets |  |  |  |
Disposals |  |  |  |
Balance at end of period |  | 36,395 | 32,675 |
Impairments | [3] | (144) | (529) |
Machinery [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 17,357 | 15,382 |
Impairments*** |  |  | (429) |
Foreign exchange movement |  |  |  |
Balance at end of period |  | 20,050 | 17,357 |
Depreciation for the year |  | 2,693 | 2,404 |
Impairments |  |  | (429) |
Fixtures and fittings [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 274 |  |
Impairments*** |  |  |  |
Initial recognition of right of use assets |  |  |  |
Disposals |  |  |  |
Balance at end of period |  | 265 | 274 |
Impairments |  |  |  |
Fixtures and fittings [member] | Gross carrying amount [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 923 | 943 |
Additions** | [2] | 88 | 202 |
Impairments*** | [3] |  | (216) |
Assets held for sale |  |  |  |
Reallocations between asset classes |  |  |  |
Foreign exchange movement |  | 7 | (6) |
Initial recognition of right of use assets |  |  |  |
Disposals |  |  |  |
Balance at end of period |  | 1,018 | 923 |
Impairments | [3] |  | (216) |
Fixtures and fittings [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 649 | 761 |
Impairments*** |  |  | (170) |
Foreign exchange movement |  | 5 | (41) |
Balance at end of period |  | 753 | 649 |
Depreciation for the year |  | 99 | 99 |
Impairments |  |  | (170) |
Motor vehicles [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 252 |  |
Impairments*** |  |  |  |
Initial recognition of right of use assets |  |  |  |
Disposals |  | (16) |  |
Balance at end of period |  | 265 | 252 |
Impairments |  |  |  |
Motor vehicles [member] | Gross carrying amount [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 2,402 | 2,329 |
Additions** | [2] | 151 | 95 |
Impairments*** | [3] |  | (17) |
Assets held for sale |  |  |  |
Reallocations between asset classes |  |  |  |
Foreign exchange movement |  | 1 | (5) |
Initial recognition of right of use assets |  |  |  |
Disposals |  | (16) |  |
Balance at end of period |  | 2,538 | 2,402 |
Impairments | [3] |  | (17) |
Motor vehicles [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Balance at beginning of period |  | 2,150 | 2,023 |
Impairments*** |  |  | (15) |
Foreign exchange movement |  | 6 | (2) |
Balance at end of period |  | 2,273 | 2,150 |
Depreciation for the year |  | $ 133 | 144 |
Impairments |  |  | $ (15) |
[1] | The Group initially applied IFRS 16 on January 1, 2019, using the modified retrospective approach. Under this approach, comparative information is not restated. There was no cumulative effect of initially applying IFRS 16 to recognise in retained earnings at the date of initial application.
[2] | Included in additions is an amount of $20,093 (2018: $19,323) relating to capital work in progress ("CWIP") and contains $165 (2018: $61) of borrowing costs capitalized from the term loan. As at year end $76,847 of CWIP was included in the closing balance (2018: $62,624).
[3] | The auto-tap transformer was written off due to the large voltage fluctuations at Blanket Mine that caused it to burn out.

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- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2019-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_e_i&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in property, plant and equipment resulting from net exchange differences arising on the translation of the financial statements 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: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2019-01-01 -Paragraph 73 -Subparagraph e -Clause viii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_e_viii&doctype=Standard -URIDate 2019-03-27 + Details
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