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Note 16 - Tax Expense - Tax Paid (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Statement Line Items [Line Items] |  |  |
Net income tax (payable)/receivable at January 1 | $ (1,145) | $ (345) | $ 344
Current tax expense | (3,783) | (4,995) | (3,106)
Foreign currency movement | 46 | (17) | (49)
Tax paid | 3,344 | 4,212 | 2,466
Net income tax payable at December 31 | $ (1,538) | $ (1,145) | $ (345)

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