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Note 17 - Property, Plant, and Equipment - Reconciliation of Changes in Property, Plant, and Equipment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | $ 82,078 |  |  |
Additions ** |  | 19,915 |  | $ 20,949 |
Balance at end of period |  | 97,427 |  | 82,078 |
Gross carrying amount [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 109,052 |  | 88,079 |
Additions ** | [1] | 19,915 |  | 20,949 |
Impairments |  | (822) | [2] | (12) |
Disposals and scrappings |  |  |  | (2) |
Reallocations between asset classes |  |  |  |  |
Foreign exchange movement |  | (116) |  | 38 |
Assets held for sale |  | (214) |  |  |
Balance at end of period |  | 127,815 |  | 109,052 |
Accumulated depreciation, amortisation and impairment [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 26,974 |  | 23,206 |
Impairments |  | (614) |  |  |
Foreign exchange movement |  | (43) |  | 5 |
Balance at end of period |  | 30,388 |  | 26,974 |
Depreciation for the year |  | 4,071 |  | 3,763 |
Land and buildings [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 5,798 |  |  |
Balance at end of period |  | 5,928 |  | 5,798 |
Land and buildings [member] | Gross carrying amount [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 9,434 |  | 8,367 |
Additions ** | [1] |  |  |  |
Impairments |  |  | [2] |  |
Disposals and scrappings |  |  |  |  |
Reallocations between asset classes |  | 1,068 |  | 1,051 |
Foreign exchange movement |  | (23) |  | 16 |
Assets held for sale |  | (140) |  |  |
Balance at end of period |  | 10,339 |  | 9,434 |
Land and buildings [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 3,636 |  | 2,950 |
Impairments |  |  |  |  |
Foreign exchange movement |  |  |  |  |
Balance at end of period |  | 4,411 |  | 3,636 |
Depreciation for the year |  | 775 |  | 686 |
Mining assets [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 56,326 |  |  |
Balance at end of period |  | 68,688 |  | 56,326 |
Mining assets [member] | Gross carrying amount [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 61,498 |  | 45,078 |
Additions ** | [1] | 18,719 |  | 17,464 | [3]
Impairments |  | (60) | [2] |  |
Disposals and scrappings |  |  |  |  |
Reallocations between asset classes |  | (5,525) |  | (1,051) |
Foreign exchange movement |  | (49) |  | 7 |
Assets held for sale |  | (74) |  |  |
Balance at end of period |  | 74,509 |  | 61,498 |
Mining assets [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 5,172 |  | 4,541 |
Impairments |  |  |  |  |
Foreign exchange movement |  |  |  |  |
Balance at end of period |  | 5,821 |  | 5,172 |
Depreciation for the year |  | 649 |  | 631 |
Tangible exploration and evaluation assets [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 6,967 |  |  |
Balance at end of period |  | 6,967 |  | 6,967 |
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 ** | [1] |  |  |  |
Impairments |  |  | [2] |  |
Disposals and scrappings |  |  |  |  |
Reallocations between asset classes |  |  |  |  |
Foreign exchange movement |  |  |  |  |
Assets held for sale |  |  |  |  |
Balance at end of period |  | 6,967 |  | 6,967 |
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 |  |  |  |  |
Machinery [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 12,499 |  |  |
Balance at end of period |  | 15,318 |  | 12,499 |
Machinery [member] | Gross carrying amount [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 27,881 |  | 24,536 |
Additions ** | [1] | 899 |  | 3,377 |
Impairments |  | (529) | [2] | (12) |
Disposals and scrappings |  |  |  |  |
Reallocations between asset classes |  | 4,457 |  | (20) |
Foreign exchange movement |  | (33) |  |  |
Assets held for sale |  |  |  |  |
Balance at end of period |  | 32,675 |  | 27,881 |
Machinery [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 15,382 |  | 13,229 |
Impairments |  | (429) |  |  |
Foreign exchange movement |  |  |  |  |
Balance at end of period |  | 17,357 |  | 15,382 |
Depreciation for the year |  | 2,404 |  | 2,153 |
Fixtures and fittings [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 182 |  |  |
Balance at end of period |  | 274 |  | 182 |
Fixtures and fittings [member] | Gross carrying amount [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 943 |  | 876 |
Additions ** | [1] | 202 |  | 36 |
Impairments |  | (216) | [2] |  |
Disposals and scrappings |  |  |  |  |
Reallocations between asset classes |  |  |  | 20 |
Foreign exchange movement |  | (6) |  | 11 |
Assets held for sale |  |  |  |  |
Balance at end of period |  | 923 |  | 943 |
Fixtures and fittings [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 761 |  | 642 |
Impairments |  | (170) |  |  |
Foreign exchange movement |  | (41) |  | 4 |
Balance at end of period |  | 649 |  | 761 |
Depreciation for the year |  | 99 |  | 115 |
Motor vehicles [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 306 |  |  |
Balance at end of period |  | 252 |  | 306 |
Motor vehicles [member] | Gross carrying amount [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 2,329 |  | 2,255 |
Additions ** | [1] | 95 |  | 72 |
Impairments |  | (17) | [2] |  |
Disposals and scrappings |  |  |  | (2) |
Reallocations between asset classes |  |  |  |  |
Foreign exchange movement |  | (5) |  | 4 |
Assets held for sale |  |  |  |  |
Balance at end of period |  | 2,402 |  | 2,329 |
Motor vehicles [member] | Accumulated depreciation, amortisation and impairment [member] |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |
Balance at beginning of period |  | 2,023 |  | 1,844 |
Impairments |  | (15) |  |  |
Foreign exchange movement |  | (2) |  | 1 |
Balance at end of period |  | 2,150 |  | 2,023 |
Depreciation for the year |  | $ 144 |  | $ 178 |
[1] | Included in additions is an amount of $19,323 (2017: $17,731) relating to capital work in progress ("CWIP") and contains $61 (2017:$ 103) of borrowing costs capitalised from the term loan. As at year end $ $62,624 of CWIP was included in the closing balance (2017: $34,086).
[2] | Items of Property, plant and equipment were impaired during 2018 certain CWIP projects being cancelled and underground equipment that could not be verified.
[3] | Included in additions to mine development, infrastructure and other assets is an amount of $161 (2017: $218) relating to rehabilitation asset capitalised, refer note 25.

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