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Note 5 - Blanket Zimbabwe Indigenisation Transaction - Shareholder Percentages and Facilitation Loan Balances (Details) - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Feb. 20, 2012 | Dec. 31, 2017 | Dec. 31, 2016
Statement Line Items [Line Items] |  |  |
Shareholding | 51.00% | 51.00% |
NCI Recognized |  | 16.20% |
NCI subject to facilitation loans |  | 24.80% |
Faciliation loans |  | $ 31,052 | $ 31,460
NIEEF [member] |  |  |
Statement Line Items [Line Items] |  |  |
Shareholding | 16.00% | 16.00% |
NCI Recognized |  | 3.20% |
NCI subject to facilitation loans |  | 12.80% |
Faciliation loans |  | $ 11,879 | 11,990
Fremiro [member] |  |  |
Statement Line Items [Line Items] |  |  |
Shareholding | 15.00% | 15.00% |
NCI Recognized |  | 3.00% |
NCI subject to facilitation loans |  | 12.00% |
Faciliation loans |  | $ 11,504 | 11,682
Community Trust [member] |  |  |
Statement Line Items [Line Items] |  |  |
Shareholding | 10.00% | 10.00% |
NCI Recognized |  | 10.00% |
Faciliation loans |  |  |
BETS [member] |  |  |
Statement Line Items [Line Items] |  |  |
Shareholding |  | 10.00% |
Faciliation loans |  | $ 7,669 | $ 7,788

X
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