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Note 10 - Other Income - Components of Other Income (Details) $ in Thousands, R in Millions | 12 Months Ended
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Dec. 31, 2018 ZAR (R) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Statement Line Items [Line Items] |  |  |  |  |
Government grant – Gold sale export incentive |  | $ 6,482 | $ 2,446 |  | $ 1,104
Eersteling rock dump sale |  | 217 |  |  |
Greenstone Provident Fund pay-out | R 4.8 | 363 |  |  |
Other |  | 39 | 148 |  | 226
|  | $ 7,101 | $ 2,594 | [1] | $ 1,330
[1] | Restated, refer note 4(a).

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