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Note 27 - Financial Instruments - Exposure to Risk (Details)
R in Thousands, $ in Thousands
Dec. 31, 2017
ZAR (R)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
ZAR (R)
Dec. 31, 2016
USD ($)
Currency risk [member]        
Statement Line Items [Line Items]        
Net monetary assets/(liabilities) exposed R 57 $ 601 R 457 $ 308
Currency risk [member] | Cash and cash equivalents [member]        
Statement Line Items [Line Items]        
Net monetary assets/(liabilities) exposed 57 601 457 265
Effect of possible strengthening or weakening 3 30 23 13
Currency risk [member] | Trade and other payables [member]        
Statement Line Items [Line Items]        
Net monetary assets/(liabilities) exposed 43
Effect of possible strengthening or weakening 2
Interest rate risk , increase by 100 basis points [member] | Cash and cash equivalents [member]        
Statement Line Items [Line Items]        
Effect of possible strengthening or weakening   128   143
Interest rate risk , increase by 100 basis points [member] | Term loan and bank overdraft [member]        
Statement Line Items [Line Items]        
Effect of possible strengthening or weakening   (15)   (30)
Interest rate risk, decrease by 100 basis points [member] | Cash and cash equivalents [member]        
Statement Line Items [Line Items]        
Effect of possible strengthening or weakening   (128)   (143)
Interest rate risk, decrease by 100 basis points [member] | Term loan and bank overdraft [member]        
Statement Line Items [Line Items]        
Effect of possible strengthening or weakening   15   30
Interest rate risk [member] | Cash and cash equivalents [member]        
Statement Line Items [Line Items]        
Net monetary assets/(liabilities) exposed   12,756   14,335
Interest rate risk [member] | Term loan facility [member]        
Statement Line Items [Line Items]        
Net monetary assets/(liabilities) exposed   $ 1,486   $ 2,987