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Note 14 - Tax Expense - Taxes Paid (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Statement Line Items [Line Items] |  |  |
Net income tax (payable)/receivable at January 1 | $ (345) | $ 344 | $ (1,617)
Current tax (expense)/tax credit | (4,995) | (3,106) | 197
Income tax recognised through other comprehensive income |  |  | 199
Foreign currency movement | (17) | (49) | 103
Tax paid | 4,212 | 2,466 | 1,462
Net income tax payable at December 31 | $ (1,145) | $ (345) | $ 344

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